First version.

src/cgame/cg_animation.c

@@ -0,0 +1,111 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "cg_local.h"
+
+/*
+===============
+CG_RunLerpFrame
+
+Sets cg.snap, cg.oldFrame, and cg.backlerp
+cg.time should be between oldFrameTime and frameTime after exit
+===============
+*/
+void CG_RunLerpFrame( lerpFrame_t *lf )
+{
+  int     f, numFrames;
+  animation_t *anim;
+
+  // debugging tool to get no animations
+  if( cg_animSpeed.integer == 0 )
+  {
+    lf->oldFrame = lf->frame = lf->backlerp = 0;
+    return;
+  }
+
+  // if we have passed the current frame, move it to
+  // oldFrame and calculate a new frame
+  if( cg.time >= lf->frameTime )
+  {
+    lf->oldFrame = lf->frame;
+    lf->oldFrameTime = lf->frameTime;
+
+    // get the next frame based on the animation
+    anim = lf->animation;
+    if( !anim->frameLerp )
+      return;   // shouldn't happen
+
+    if( cg.time < lf->animationTime )
+      lf->frameTime = lf->animationTime;    // initial lerp
+    else
+      lf->frameTime = lf->oldFrameTime + anim->frameLerp;
+
+    f = ( lf->frameTime - lf->animationTime ) / anim->frameLerp;
+    numFrames = anim->numFrames;
+    if( anim->flipflop )
+      numFrames *= 2;
+
+    if( f >= numFrames )
+    {
+      f -= numFrames;
+      if( anim->loopFrames )
+      {
+        f %= anim->loopFrames;
+        f += anim->numFrames - anim->loopFrames;
+      }
+      else
+      {
+        f = numFrames - 1;
+        // the animation is stuck at the end, so it
+        // can immediately transition to another sequence
+        lf->frameTime = cg.time;
+      }
+    }
+
+    if( anim->reversed )
+      lf->frame = anim->firstFrame + anim->numFrames - 1 - f;
+    else if( anim->flipflop && f >= anim->numFrames )
+      lf->frame = anim->firstFrame + anim->numFrames - 1 - ( f % anim->numFrames );
+    else
+      lf->frame = anim->firstFrame + f;
+
+    if( cg.time > lf->frameTime )
+    {
+      lf->frameTime = cg.time;
+      if( cg_debugAnim.integer )
+        CG_Printf( "Clamp lf->frameTime\n" );
+    }
+  }
+
+  if( lf->frameTime > cg.time + 200 )
+    lf->frameTime = cg.time;
+
+  if( lf->oldFrameTime > cg.time )
+    lf->oldFrameTime = cg.time;
+
+  // calculate current lerp value
+  if( lf->frameTime == lf->oldFrameTime )
+    lf->backlerp = 0;
+  else
+    lf->backlerp = 1.0 - (float)( cg.time - lf->oldFrameTime ) / ( lf->frameTime - lf->oldFrameTime );
+}

src/cgame/cg_animmapobj.c

@@ -0,0 +1,227 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "cg_local.h"
+
+
+/*
+===============
+CG_DoorAnimation
+===============
+*/
+static void CG_DoorAnimation( centity_t *cent, int *old, int *now, float *backLerp )
+{
+  CG_RunLerpFrame( &cent->lerpFrame );
+
+  *old      = cent->lerpFrame.oldFrame;
+  *now      = cent->lerpFrame.frame;
+  *backLerp = cent->lerpFrame.backlerp;
+}
+
+
+/*
+===============
+CG_ModelDoor
+===============
+*/
+void CG_ModelDoor( centity_t *cent )
+{
+  refEntity_t     ent;
+  entityState_t   *es;
+  animation_t     anim;
+  lerpFrame_t     *lf = &cent->lerpFrame;
+
+  es = &cent->currentState;
+
+  if( !es->modelindex )
+    return;
+
+  //create the render entity
+  memset( &ent, 0, sizeof( ent ) );
+  VectorCopy( cent->lerpOrigin, ent.origin );
+  VectorCopy( cent->lerpOrigin, ent.oldorigin );
+  AnglesToAxis( cent->lerpAngles, ent.axis );
+
+  ent.renderfx = RF_NOSHADOW;
+
+  //add the door model
+  ent.skinNum = 0;
+  ent.hModel = cgs.gameModels[ es->modelindex ];
+
+  //scale the door
+  VectorScale( ent.axis[ 0 ], es->origin2[ 0 ], ent.axis[ 0 ] );
+  VectorScale( ent.axis[ 1 ], es->origin2[ 1 ], ent.axis[ 1 ] );
+  VectorScale( ent.axis[ 2 ], es->origin2[ 2 ], ent.axis[ 2 ] );
+  ent.nonNormalizedAxes = qtrue;
+
+  //setup animation
+  anim.firstFrame   = es->powerups;
+  anim.numFrames    = es->weapon;
+  anim.reversed     = !es->legsAnim;
+  anim.flipflop     = qfalse;
+  anim.loopFrames   = 0;
+  anim.frameLerp    = 1000 / es->torsoAnim;
+  anim.initialLerp  = 1000 / es->torsoAnim;
+
+  //door changed state
+  if( es->legsAnim != cent->doorState )
+  {
+    lf->animationTime = lf->frameTime + anim.initialLerp;
+    cent->doorState = es->legsAnim;
+  }
+
+  lf->animation = &anim;
+
+  //run animation
+  CG_DoorAnimation( cent, &ent.oldframe, &ent.frame, &ent.backlerp );
+
+  trap_R_AddRefEntityToScene( &ent );
+}
+
+
+/*
+===============
+CG_AMOAnimation
+===============
+*/
+static void CG_AMOAnimation( centity_t *cent, int *old, int *now, float *backLerp )
+{
+  if( !( cent->currentState.eFlags & EF_MOVER_STOP ) || cent->animPlaying )
+  {
+    int delta = cg.time - cent->miscTime;
+
+    //hack to prevent "pausing" mucking up the lerping
+    if( delta > 900 )
+    {
+      cent->lerpFrame.oldFrameTime  += delta;
+      cent->lerpFrame.frameTime     += delta;
+    }
+
+    CG_RunLerpFrame( &cent->lerpFrame );
+    cent->miscTime = cg.time;
+  }
+
+  *old      = cent->lerpFrame.oldFrame;
+  *now      = cent->lerpFrame.frame;
+  *backLerp = cent->lerpFrame.backlerp;
+}
+
+
+/*
+==================
+CG_animMapObj
+==================
+*/
+void CG_AnimMapObj( centity_t *cent )
+{
+  refEntity_t     ent;
+  entityState_t   *es;
+  float           scale;
+  animation_t     anim;
+
+  es = &cent->currentState;
+
+  // if set to invisible, skip
+  if( !es->modelindex || ( es->eFlags & EF_NODRAW ) )
+    return;
+
+  memset( &ent, 0, sizeof( ent ) );
+
+  VectorCopy( es->angles, cent->lerpAngles );
+  AnglesToAxis( cent->lerpAngles, ent.axis );
+
+  ent.hModel = cgs.gameModels[ es->modelindex ];
+
+  VectorCopy( cent->lerpOrigin, ent.origin);
+  VectorCopy( cent->lerpOrigin, ent.oldorigin);
+
+  ent.nonNormalizedAxes = qfalse;
+
+  //scale the model
+  if( es->angles2[ 0 ] )
+  {
+    scale = es->angles2[ 0 ];
+    VectorScale( ent.axis[ 0 ], scale, ent.axis[ 0 ] );
+    VectorScale( ent.axis[ 1 ], scale, ent.axis[ 1 ] );
+    VectorScale( ent.axis[ 2 ], scale, ent.axis[ 2 ] );
+    ent.nonNormalizedAxes = qtrue;
+  }
+
+  //setup animation
+  anim.firstFrame = es->powerups;
+  anim.numFrames = es->weapon;
+  anim.reversed = qfalse;
+  anim.flipflop = qfalse;
+
+  // if numFrames is negative the animation is reversed
+  if( anim.numFrames < 0 )
+  {
+    anim.numFrames = -anim.numFrames;
+    anim.reversed = qtrue;
+  }
+
+  anim.loopFrames = es->torsoAnim;
+
+  if( !es->legsAnim )
+  {
+    anim.frameLerp = 1000;
+    anim.initialLerp = 1000;
+  }
+  else
+  {
+    anim.frameLerp = 1000 / es->legsAnim;
+    anim.initialLerp = 1000 / es->legsAnim;
+  }
+
+  cent->lerpFrame.animation = &anim;
+ 
+  if( !anim.loopFrames )
+  {
+    // add one frame to allow the animation to play the last frame
+    // add another to get it to stop playing at the first frame
+    anim.numFrames += 2;
+
+    if( !cent->animInit )
+    {
+      cent->animInit = qtrue;
+      cent->animPlaying = !( cent->currentState.eFlags & EF_MOVER_STOP );
+    }
+    else
+    {
+      if( cent->animLastState !=
+          !( cent->currentState.eFlags & EF_MOVER_STOP ) )
+      {
+        cent->animPlaying = qtrue;
+        cent->lerpFrame.animationTime = cg.time;
+        cent->lerpFrame.frameTime = cg.time;
+      }
+    }
+    cent->animLastState = !( cent->currentState.eFlags & EF_MOVER_STOP );
+  }
+
+  //run animation
+  CG_AMOAnimation( cent, &ent.oldframe, &ent.frame, &ent.backlerp );
+
+  // add to refresh list
+  trap_R_AddRefEntityToScene(&ent);
+}

src/cgame/cg_attachment.c

@@ -0,0 +1,404 @@
+/*
+===========================================================================
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_attachment.c -- an abstract attachment system
+
+#include "cg_local.h"
+
+/*
+===============
+CG_AttachmentPoint
+
+Return the attachment point
+===============
+*/
+qboolean CG_AttachmentPoint( attachment_t *a, vec3_t v )
+{
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  // if it all breaks, then use the last point we know was correct
+  VectorCopy( a->lastValidAttachmentPoint, v );
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      if( !a->staticValid )
+        return qfalse;
+
+      VectorCopy( a->origin, v );
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      AxisCopy( axisDefault, a->re.axis );
+      CG_PositionRotatedEntityOnTag( &a->re, &a->parent,
+                                     a->model, a->tagName );
+      VectorCopy( a->re.origin, v );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      if( a->centNum == cg.predictedPlayerState.clientNum )
+      {
+        // this is smoother if it's the local client
+        VectorCopy( cg.predictedPlayerState.origin, v );
+      }
+      else
+      {
+        cent = &cg_entities[ a->centNum ];
+        VectorCopy( cent->lerpOrigin, v );
+      }
+      break;
+
+    case AT_PARTICLE:
+      if( !a->particleValid )
+        return qfalse;
+
+      if( !a->particle->valid )
+      {
+        a->particleValid = qfalse;
+        return qfalse;
+      }
+      else
+        VectorCopy( a->particle->origin, v );
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  if( a->hasOffset )
+    VectorAdd( v, a->offset, v );
+
+  VectorCopy( v, a->lastValidAttachmentPoint );
+
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentDir
+
+Return the attachment direction
+===============
+*/
+qboolean CG_AttachmentDir( attachment_t *a, vec3_t v )
+{
+  vec3_t      forward;
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      return qfalse;
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      VectorCopy( a->re.axis[ 0 ], v );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      cent = &cg_entities[ a->centNum ];
+      AngleVectors( cent->lerpAngles, forward, NULL, NULL );
+      VectorCopy( forward, v );
+      break;
+
+    case AT_PARTICLE:
+      if( !a->particleValid )
+        return qfalse;
+
+      if( !a->particle->valid )
+      {
+        a->particleValid = qfalse;
+        return qfalse;
+      }
+      else
+        VectorCopy( a->particle->velocity, v );
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  VectorNormalize( v );
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentAxis
+
+Return the attachment axis
+===============
+*/
+qboolean CG_AttachmentAxis( attachment_t *a, vec3_t axis[ 3 ] )
+{
+  centity_t   *cent;
+
+  if( !a )
+    return qfalse;
+
+  switch( a->type )
+  {
+    case AT_STATIC:
+      return qfalse;
+      break;
+
+    case AT_TAG:
+      if( !a->tagValid )
+        return qfalse;
+
+      AxisCopy( a->re.axis, axis );
+      break;
+
+    case AT_CENT:
+      if( !a->centValid )
+        return qfalse;
+
+      cent = &cg_entities[ a->centNum ];
+      AnglesToAxis( cent->lerpAngles, axis );
+      break;
+
+    case AT_PARTICLE:
+      return qfalse;
+      break;
+
+    default:
+      CG_Printf( S_COLOR_RED "ERROR: Invalid attachmentType_t in attachment\n" );
+      break;
+  }
+
+  return qtrue;
+}
+
+/*
+===============
+CG_AttachmentVelocity
+
+If the attachment can have velocity, return it
+===============
+*/
+qboolean CG_AttachmentVelocity( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return qfalse;
+
+  if( a->particleValid && a->particle->valid )
+  {
+    VectorCopy( a->particle->velocity, v );
+    return qtrue;
+  }
+  else if( a->centValid )
+  {
+    centity_t *cent = &cg_entities[ a->centNum ];
+
+    VectorCopy( cent->currentState.pos.trDelta, v );
+    return qtrue;
+  }
+
+  return qfalse;
+}
+
+/*
+===============
+CG_AttachmentCentNum
+
+If the attachment has a centNum, return it
+===============
+*/
+int CG_AttachmentCentNum( attachment_t *a )
+{
+  if( !a || !a->centValid )
+    return -1;
+
+  return a->centNum;
+}
+
+/*
+===============
+CG_Attached
+
+If the attachment is valid, return qtrue
+===============
+*/
+qboolean CG_Attached( attachment_t *a )
+{
+  if( !a )
+    return qfalse;
+
+  return a->attached;
+}
+
+/*
+===============
+CG_AttachToPoint
+
+Attach to a point in space
+===============
+*/
+void CG_AttachToPoint( attachment_t *a )
+{
+  if( !a || !a->staticValid )
+    return;
+
+  a->type = AT_STATIC;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToCent
+
+Attach to a centity_t
+===============
+*/
+void CG_AttachToCent( attachment_t *a )
+{
+  if( !a || !a->centValid )
+    return;
+
+  a->type = AT_CENT;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToTag
+
+Attach to a model tag
+===============
+*/
+void CG_AttachToTag( attachment_t *a )
+{
+  if( !a || !a->tagValid )
+    return;
+
+  a->type = AT_TAG;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_AttachToParticle
+
+Attach to a particle
+===============
+*/
+void CG_AttachToParticle( attachment_t *a )
+{
+  if( !a || !a->particleValid )
+    return;
+
+  a->type = AT_PARTICLE;
+  a->attached = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentPoint
+===============
+*/
+void CG_SetAttachmentPoint( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return;
+
+  VectorCopy( v, a->origin );
+  a->staticValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentCent
+===============
+*/
+void CG_SetAttachmentCent( attachment_t *a, centity_t *cent )
+{
+  if( !a || !cent )
+    return;
+
+  a->centNum = cent->currentState.number;
+  a->centValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentTag
+===============
+*/
+void CG_SetAttachmentTag( attachment_t *a, refEntity_t parent,
+    qhandle_t model, char *tagName )
+{
+  if( !a )
+    return;
+
+  a->parent = parent;
+  a->model = model;
+  strncpy( a->tagName, tagName, MAX_STRING_CHARS );
+  a->tagValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentParticle
+===============
+*/
+void CG_SetAttachmentParticle( attachment_t *a, particle_t *p )
+{
+  if( !a )
+    return;
+
+  a->particle = p;
+  a->particleValid = qtrue;
+}
+
+/*
+===============
+CG_SetAttachmentOffset
+===============
+*/
+void CG_SetAttachmentOffset( attachment_t *a, vec3_t v )
+{
+  if( !a )
+    return;
+
+  VectorCopy( v, a->offset );
+  a->hasOffset = qtrue;
+}

src/cgame/cg_consolecmds.c

@@ -0,0 +1,325 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_consolecmds.c -- text commands typed in at the local console, or
+// executed by a key binding
+
+
+#include "cg_local.h"
+
+
+
+void CG_TargetCommand_f( void )
+{
+  int   targetNum;
+  char  test[ 4 ];
+
+  targetNum = CG_CrosshairPlayer( );
+  if( !targetNum )
+    return;
+
+  trap_Argv( 1, test, 4 );
+  trap_SendConsoleCommand( va( "gc %i %i", targetNum, atoi( test ) ) );
+}
+
+
+
+/*
+=================
+CG_SizeUp_f
+
+Keybinding command
+=================
+*/
+static void CG_SizeUp_f( void )
+{
+  trap_Cvar_Set( "cg_viewsize", va( "%i", (int)( cg_viewsize.integer + 10 ) ) );
+}
+
+
+/*
+=================
+CG_SizeDown_f
+
+Keybinding command
+=================
+*/
+static void CG_SizeDown_f( void )
+{
+  trap_Cvar_Set( "cg_viewsize", va( "%i", (int)( cg_viewsize.integer - 10 ) ) );
+}
+
+
+/*
+=============
+CG_Viewpos_f
+
+Debugging command to print the current position
+=============
+*/
+static void CG_Viewpos_f( void )
+{
+  CG_Printf( "(%i %i %i) : %i\n", (int)cg.refdef.vieworg[ 0 ],
+    (int)cg.refdef.vieworg[ 1 ], (int)cg.refdef.vieworg[ 2 ],
+    (int)cg.refdefViewAngles[ YAW ] );
+}
+
+qboolean CG_RequestScores( void )
+{
+  if( cg.scoresRequestTime + 2000 < cg.time )
+  {
+    // the scores are more than two seconds out of data,
+    // so request new ones
+    cg.scoresRequestTime = cg.time;
+    //TA: added \n SendClientCommand doesn't call flush( )?
+    trap_SendClientCommand( "score\n" );
+
+    return qtrue;
+  }
+  else
+    return qfalse;
+}
+
+extern menuDef_t *menuScoreboard;
+
+static void CG_scrollScoresDown_f( void )
+{
+  if( menuScoreboard && cg.scoreBoardShowing )
+  {
+    Menu_ScrollFeeder( menuScoreboard, FEEDER_ALIENTEAM_LIST, qtrue );
+    Menu_ScrollFeeder( menuScoreboard, FEEDER_HUMANTEAM_LIST, qtrue );
+  }
+}
+
+
+static void CG_scrollScoresUp_f( void )
+{
+  if( menuScoreboard && cg.scoreBoardShowing )
+  {
+    Menu_ScrollFeeder( menuScoreboard, FEEDER_ALIENTEAM_LIST, qfalse );
+    Menu_ScrollFeeder( menuScoreboard, FEEDER_HUMANTEAM_LIST, qfalse );
+  }
+}
+
+static void CG_ScoresDown_f( void )
+{
+  if( !cg.showScores )
+  {
+    Menu_SetFeederSelection( menuScoreboard, FEEDER_ALIENTEAM_LIST, 0, NULL );
+    Menu_SetFeederSelection( menuScoreboard, FEEDER_HUMANTEAM_LIST, 0, NULL );
+  }
+
+  if( CG_RequestScores( ) )
+  {
+    // leave the current scores up if they were already
+    // displayed, but if this is the first hit, clear them out
+    if( !cg.showScores )
+    {
+      if( cg_debugRandom.integer )
+        CG_Printf( "CG_ScoresDown_f: scores out of date\n" );
+
+      cg.showScores = qtrue;
+      cg.numScores = 0;
+    }
+  }
+  else
+  {
+    // show the cached contents even if they just pressed if it
+    // is within two seconds
+    cg.showScores = qtrue;
+  }
+}
+
+static void CG_ScoresUp_f( void )
+{
+  if( cg.showScores )
+  {
+    cg.showScores = qfalse;
+    cg.scoreFadeTime = cg.time;
+  }
+}
+
+static void CG_TellTarget_f( void )
+{
+  int   clientNum;
+  char  command[ 128 ];
+  char  message[ 128 ];
+
+  clientNum = CG_CrosshairPlayer( );
+  if( clientNum == -1 )
+    return;
+
+  trap_Args( message, 128 );
+  Com_sprintf( command, 128, "tell %i %s", clientNum, message );
+  trap_SendClientCommand( command );
+}
+
+static void CG_TellAttacker_f( void )
+{
+  int   clientNum;
+  char  command[ 128 ];
+  char  message[ 128 ];
+
+  clientNum = CG_LastAttacker( );
+  if( clientNum == -1 )
+    return;
+
+  trap_Args( message, 128 );
+  Com_sprintf( command, 128, "tell %i %s", clientNum, message );
+  trap_SendClientCommand( command );
+}
+
+typedef struct
+{
+  char  *cmd;
+  void  (*function)( void );
+} consoleCommand_t;
+
+static consoleCommand_t commands[ ] =
+{
+  { "testgun", CG_TestGun_f },
+  { "testmodel", CG_TestModel_f },
+  { "nextframe", CG_TestModelNextFrame_f },
+  { "prevframe", CG_TestModelPrevFrame_f },
+  { "nextskin", CG_TestModelNextSkin_f },
+  { "prevskin", CG_TestModelPrevSkin_f },
+  { "viewpos", CG_Viewpos_f },
+  { "+scores", CG_ScoresDown_f },
+  { "-scores", CG_ScoresUp_f },
+  { "scoresUp", CG_scrollScoresUp_f },
+  { "scoresDown", CG_scrollScoresDown_f },
+  { "sizeup", CG_SizeUp_f },
+  { "sizedown", CG_SizeDown_f },
+  { "weapnext", CG_NextWeapon_f },
+  { "weapprev", CG_PrevWeapon_f },
+  { "weapon", CG_Weapon_f },
+  { "tell_target", CG_TellTarget_f },
+  { "tell_attacker", CG_TellAttacker_f },
+  { "tcmd", CG_TargetCommand_f },
+  { "testPS", CG_TestPS_f },
+  { "destroyTestPS", CG_DestroyTestPS_f },
+  { "testTS", CG_TestTS_f },
+  { "destroyTestTS", CG_DestroyTestTS_f },
+};
+
+
+/*
+=================
+CG_ConsoleCommand
+
+The string has been tokenized and can be retrieved with
+Cmd_Argc() / Cmd_Argv()
+=================
+*/
+qboolean CG_ConsoleCommand( void )
+{
+  const char  *cmd;
+  const char  *arg1;
+  int         i;
+
+  cmd = CG_Argv( 0 );
+
+  //TA: ugly hacky special case
+  if( !Q_stricmp( cmd, "ui_menu" ) )
+  {
+    arg1 = CG_Argv( 1 );
+    trap_SendConsoleCommand( va( "menu %s\n", arg1 ) );
+    return qtrue;
+  }
+
+  for( i = 0; i < sizeof( commands ) / sizeof( commands[ 0 ] ); i++ )
+  {
+    if( !Q_stricmp( cmd, commands[ i ].cmd ) )
+    {
+      commands[ i ].function( );
+      return qtrue;
+    }
+  }
+
+  return qfalse;
+}
+
+
+/*
+=================
+CG_InitConsoleCommands
+
+Let the client system know about all of our commands
+so it can perform tab completion
+=================
+*/
+void CG_InitConsoleCommands( void )
+{
+  int   i;
+
+  for( i = 0 ; i < sizeof( commands ) / sizeof( commands[ 0 ] ) ; i++ )
+    trap_AddCommand( commands[ i ].cmd );
+
+  //
+  // the game server will interpret these commands, which will be automatically
+  // forwarded to the server after they are not recognized locally
+  //
+  trap_AddCommand( "kill" );
+  trap_AddCommand( "say" );
+  trap_AddCommand( "say_team" );
+  trap_AddCommand( "tell" );
+  trap_AddCommand( "vsay" );
+  trap_AddCommand( "vsay_team" );
+  trap_AddCommand( "vtell" );
+  trap_AddCommand( "vtaunt" );
+  trap_AddCommand( "vosay" );
+  trap_AddCommand( "vosay_team" );
+  trap_AddCommand( "votell" );
+  trap_AddCommand( "give" );
+  trap_AddCommand( "god" );
+  trap_AddCommand( "notarget" );
+  trap_AddCommand( "noclip" );
+  trap_AddCommand( "team" );
+  trap_AddCommand( "follow" );
+  trap_AddCommand( "levelshot" );
+  trap_AddCommand( "addbot" );
+  trap_AddCommand( "setviewpos" );
+  trap_AddCommand( "callvote" );
+  trap_AddCommand( "vote" );
+  trap_AddCommand( "callteamvote" );
+  trap_AddCommand( "teamvote" );
+  trap_AddCommand( "stats" );
+  trap_AddCommand( "teamtask" );
+  trap_AddCommand( "class" );
+  trap_AddCommand( "build" );
+  trap_AddCommand( "buy" );
+  trap_AddCommand( "sell" );
+  trap_AddCommand( "reload" );
+  trap_AddCommand( "itemact" );
+  trap_AddCommand( "itemdeact" );
+  trap_AddCommand( "itemtoggle" );
+  trap_AddCommand( "destroy" );
+  trap_AddCommand( "deconstruct" );
+  trap_AddCommand( "menu" );
+  trap_AddCommand( "ui_menu" );
+  trap_AddCommand( "mapRotation" );
+  trap_AddCommand( "stopMapRotation" );
+  trap_AddCommand( "advanceMapRotation" );
+  trap_AddCommand( "alienWin" );
+  trap_AddCommand( "humanWin" );
+}

src/cgame/cg_drawtools.c

@@ -0,0 +1,378 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_drawtools.c -- helper functions called by cg_draw, cg_scoreboard, cg_info, etc
+
+
+#include "cg_local.h"
+
+/*
+===============
+CG_DrawPlane
+
+Draw a quad in 3 space - basically CG_DrawPic in 3 space
+===============
+*/
+void CG_DrawPlane( vec3_t origin, vec3_t down, vec3_t right, qhandle_t shader )
+{
+  polyVert_t  verts[ 4 ];
+  vec3_t      temp;
+
+  VectorCopy( origin, verts[ 0 ].xyz );
+  verts[ 0 ].st[ 0 ] = 0;
+  verts[ 0 ].st[ 1 ] = 0;
+  verts[ 0 ].modulate[ 0 ] = 255;
+  verts[ 0 ].modulate[ 1 ] = 255;
+  verts[ 0 ].modulate[ 2 ] = 255;
+  verts[ 0 ].modulate[ 3 ] = 255;
+
+  VectorAdd( origin, right, temp );
+  VectorCopy( temp, verts[ 1 ].xyz );
+  verts[ 1 ].st[ 0 ] = 1;
+  verts[ 1 ].st[ 1 ] = 0;
+  verts[ 1 ].modulate[ 0 ] = 255;
+  verts[ 1 ].modulate[ 1 ] = 255;
+  verts[ 1 ].modulate[ 2 ] = 255;
+  verts[ 1 ].modulate[ 3 ] = 255;
+
+  VectorAdd( origin, right, temp );
+  VectorAdd( temp, down, temp );
+  VectorCopy( temp, verts[ 2 ].xyz );
+  verts[ 2 ].st[ 0 ] = 1;
+  verts[ 2 ].st[ 1 ] = 1;
+  verts[ 2 ].modulate[ 0 ] = 255;
+  verts[ 2 ].modulate[ 1 ] = 255;
+  verts[ 2 ].modulate[ 2 ] = 255;
+  verts[ 2 ].modulate[ 3 ] = 255;
+
+  VectorAdd( origin, down, temp );
+  VectorCopy( temp, verts[ 3 ].xyz );
+  verts[ 3 ].st[ 0 ] = 0;
+  verts[ 3 ].st[ 1 ] = 1;
+  verts[ 3 ].modulate[ 0 ] = 255;
+  verts[ 3 ].modulate[ 1 ] = 255;
+  verts[ 3 ].modulate[ 2 ] = 255;
+  verts[ 3 ].modulate[ 3 ] = 255;
+
+  trap_R_AddPolyToScene( shader, 4, verts );
+}
+
+/*
+================
+CG_AdjustFrom640
+
+Adjusted for resolution and screen aspect ratio
+================
+*/
+void CG_AdjustFrom640( float *x, float *y, float *w, float *h )
+{
+#if 0
+  // adjust for wide screens
+  if ( cgs.glconfig.vidWidth * 480 > cgs.glconfig.vidHeight * 640 ) {
+    *x += 0.5 * ( cgs.glconfig.vidWidth - ( cgs.glconfig.vidHeight * 640 / 480 ) );
+  }
+#endif
+  // scale for screen sizes
+  *x *= cgs.screenXScale;
+  *y *= cgs.screenYScale;
+  *w *= cgs.screenXScale;
+  *h *= cgs.screenYScale;
+}
+
+/*
+================
+CG_FillRect
+
+Coordinates are 640*480 virtual values
+=================
+*/
+void CG_FillRect( float x, float y, float width, float height, const float *color )
+{
+  trap_R_SetColor( color );
+
+  CG_AdjustFrom640( &x, &y, &width, &height );
+  trap_R_DrawStretchPic( x, y, width, height, 0, 0, 0, 0, cgs.media.whiteShader );
+
+  trap_R_SetColor( NULL );
+}
+
+
+/*
+================
+CG_DrawSides
+
+Coords are virtual 640x480
+================
+*/
+void CG_DrawSides( float x, float y, float w, float h, float size )
+{
+  CG_AdjustFrom640( &x, &y, &w, &h );
+  size *= cgs.screenXScale;
+  trap_R_DrawStretchPic( x, y, size, h, 0, 0, 0, 0, cgs.media.whiteShader );
+  trap_R_DrawStretchPic( x + w - size, y, size, h, 0, 0, 0, 0, cgs.media.whiteShader );
+}
+
+void CG_DrawTopBottom( float x, float y, float w, float h, float size )
+{
+  CG_AdjustFrom640( &x, &y, &w, &h );
+  size *= cgs.screenYScale;
+  trap_R_DrawStretchPic( x, y, w, size, 0, 0, 0, 0, cgs.media.whiteShader );
+  trap_R_DrawStretchPic( x, y + h - size, w, size, 0, 0, 0, 0, cgs.media.whiteShader );
+}
+
+
+/*
+================
+CG_DrawRect
+
+Coordinates are 640*480 virtual values
+=================
+*/
+void CG_DrawRect( float x, float y, float width, float height, float size, const float *color )
+{
+  trap_R_SetColor( color );
+
+  CG_DrawTopBottom( x, y, width, height, size );
+  CG_DrawSides( x, y, width, height, size );
+
+  trap_R_SetColor( NULL );
+}
+
+
+/*
+================
+CG_DrawPic
+
+Coordinates are 640*480 virtual values
+=================
+*/
+void CG_DrawPic( float x, float y, float width, float height, qhandle_t hShader )
+{
+  CG_AdjustFrom640( &x, &y, &width, &height );
+  trap_R_DrawStretchPic( x, y, width, height, 0, 0, 1, 1, hShader );
+}
+
+
+
+/*
+================
+CG_DrawFadePic
+
+Coordinates are 640*480 virtual values
+=================
+*/
+void CG_DrawFadePic( float x, float y, float width, float height, vec4_t fcolor,
+                     vec4_t tcolor, float amount, qhandle_t hShader )
+{
+  vec4_t  finalcolor;
+  float   inverse;
+
+  inverse = 100 - amount;
+
+  CG_AdjustFrom640( &x, &y, &width, &height );
+
+  finalcolor[ 0 ] = ( ( inverse * fcolor[ 0 ] ) + ( amount * tcolor[ 0 ] ) ) / 100;
+  finalcolor[ 1 ] = ( ( inverse * fcolor[ 1 ] ) + ( amount * tcolor[ 1 ] ) ) / 100;
+  finalcolor[ 2 ] = ( ( inverse * fcolor[ 2 ] ) + ( amount * tcolor[ 2 ] ) ) / 100;
+  finalcolor[ 3 ] = ( ( inverse * fcolor[ 3 ] ) + ( amount * tcolor[ 3 ] ) ) / 100;
+
+  trap_R_SetColor( finalcolor );
+  trap_R_DrawStretchPic( x, y, width, height, 0, 0, 1, 1, hShader );
+  trap_R_SetColor( NULL );
+}
+
+/*
+=================
+CG_DrawStrlen
+
+Returns character count, skiping color escape codes
+=================
+*/
+int CG_DrawStrlen( const char *str )
+{
+  const char  *s = str;
+  int         count = 0;
+
+  while( *s )
+  {
+    if( Q_IsColorString( s ) )
+      s += 2;
+    else
+    {
+      count++;
+      s++;
+    }
+  }
+
+  return count;
+}
+
+/*
+=============
+CG_TileClearBox
+
+This repeats a 64*64 tile graphic to fill the screen around a sized down
+refresh window.
+=============
+*/
+static void CG_TileClearBox( int x, int y, int w, int h, qhandle_t hShader )
+{
+  float s1, t1, s2, t2;
+
+  s1 = x / 64.0;
+  t1 = y / 64.0;
+  s2 = ( x + w ) / 64.0;
+  t2 = ( y + h ) / 64.0;
+  trap_R_DrawStretchPic( x, y, w, h, s1, t1, s2, t2, hShader );
+}
+
+
+
+/*
+==============
+CG_TileClear
+
+Clear around a sized down screen
+==============
+*/
+void CG_TileClear( void )
+{
+  int   top, bottom, left, right;
+  int   w, h;
+
+  w = cgs.glconfig.vidWidth;
+  h = cgs.glconfig.vidHeight;
+
+  if( cg.refdef.x == 0 && cg.refdef.y == 0 &&
+      cg.refdef.width == w && cg.refdef.height == h )
+    return;   // full screen rendering
+
+  top = cg.refdef.y;
+  bottom = top + cg.refdef.height - 1;
+  left = cg.refdef.x;
+  right = left + cg.refdef.width - 1;
+
+  // clear above view screen
+  CG_TileClearBox( 0, 0, w, top, cgs.media.backTileShader );
+
+  // clear below view screen
+  CG_TileClearBox( 0, bottom, w, h - bottom, cgs.media.backTileShader );
+
+  // clear left of view screen
+  CG_TileClearBox( 0, top, left, bottom - top + 1, cgs.media.backTileShader );
+
+  // clear right of view screen
+  CG_TileClearBox( right, top, w - right, bottom - top + 1, cgs.media.backTileShader );
+}
+
+/*
+================
+CG_FadeColor
+================
+*/
+float *CG_FadeColor( int startMsec, int totalMsec )
+{
+  static vec4_t   color;
+  int     t;
+
+  if( startMsec == 0 )
+    return NULL;
+
+  t = cg.time - startMsec;
+
+  if( t >= totalMsec )
+    return NULL;
+
+  // fade out
+  if( totalMsec - t < FADE_TIME )
+    color[ 3 ] = ( totalMsec - t ) * 1.0 / FADE_TIME;
+  else
+    color[ 3 ] = 1.0;
+
+  color[ 0 ] = color[ 1 ] = color[ 2 ] = 1;
+
+  return color;
+}
+
+/*
+================
+CG_WorldToScreen
+================
+*/
+qboolean CG_WorldToScreen( vec3_t point, float *x, float *y )
+{
+	vec3_t  trans;
+	float   xc, yc;
+	float   px, py;
+	float   z;
+
+	px = tan( cg.refdef.fov_x * M_PI / 360.0 );
+	py = tan( cg.refdef.fov_y * M_PI / 360.0 );
+
+	VectorSubtract( point, cg.refdef.vieworg, trans );
+
+	xc = 640.0f / 2.0f;
+	yc = 480.0f / 2.0f;
+
+	z = DotProduct( trans, cg.refdef.viewaxis[ 0 ] );
+	if( z <= 0.001f )
+		return qfalse;
+
+  if( x )
+	  *x = xc - DotProduct( trans, cg.refdef.viewaxis[ 1 ] ) * xc / ( z * px );
+
+  if( y )
+	  *y = yc - DotProduct( trans, cg.refdef.viewaxis[ 2 ] ) * yc / ( z * py );
+
+	return qtrue;
+}
+
+/*
+================
+CG_KeyBinding
+================
+*/
+char *CG_KeyBinding( const char *bind )
+{
+  static char key[ 32 ];
+  char bindbuff[ MAX_CVAR_VALUE_STRING ];
+  int i;
+
+  key[ 0 ] = '\0';
+  // NOTE: change K_LAST_KEY to MAX_KEYS for full key support (eventually)
+  for( i = 0; i < K_LAST_KEY; i++ )
+  {
+    trap_Key_GetBindingBuf( i, bindbuff, sizeof( bindbuff ) );
+    if( !Q_stricmp( bindbuff, bind ) )
+    {
+      trap_Key_KeynumToStringBuf( i, key, sizeof( key ) );
+      break;
+    } 
+  }
+  if( !key[ 0 ] )
+  {
+    Q_strncpyz( key, "\\", sizeof( key ) );
+    Q_strcat( key, sizeof( key ), bind );
+  }
+  return key;
+}

src/cgame/cg_marks.c

@@ -0,0 +1,289 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_marks.c -- wall marks
+
+
+#include "cg_local.h"
+
+/*
+===================================================================
+
+MARK POLYS
+
+===================================================================
+*/
+
+
+markPoly_t  cg_activeMarkPolys;     // double linked list
+markPoly_t  *cg_freeMarkPolys;      // single linked list
+markPoly_t  cg_markPolys[ MAX_MARK_POLYS ];
+static int  markTotal;
+
+/*
+===================
+CG_InitMarkPolys
+
+This is called at startup and for tournement restarts
+===================
+*/
+void CG_InitMarkPolys( void )
+{
+  int   i;
+
+  memset( cg_markPolys, 0, sizeof( cg_markPolys ) );
+
+  cg_activeMarkPolys.nextMark = &cg_activeMarkPolys;
+  cg_activeMarkPolys.prevMark = &cg_activeMarkPolys;
+  cg_freeMarkPolys = cg_markPolys;
+
+  for( i = 0; i < MAX_MARK_POLYS - 1; i++ )
+    cg_markPolys[ i ].nextMark = &cg_markPolys[ i + 1 ];
+}
+
+
+/*
+==================
+CG_FreeMarkPoly
+==================
+*/
+void CG_FreeMarkPoly( markPoly_t *le )
+{
+  if( !le->prevMark )
+    CG_Error( "CG_FreeLocalEntity: not active" );
+
+  // remove from the doubly linked active list
+  le->prevMark->nextMark = le->nextMark;
+  le->nextMark->prevMark = le->prevMark;
+
+  // the free list is only singly linked
+  le->nextMark = cg_freeMarkPolys;
+  cg_freeMarkPolys = le;
+}
+
+/*
+===================
+CG_AllocMark
+
+Will allways succeed, even if it requires freeing an old active mark
+===================
+*/
+markPoly_t *CG_AllocMark( void )
+{
+  markPoly_t  *le;
+  int         time;
+
+  if( !cg_freeMarkPolys )
+  {
+    // no free entities, so free the one at the end of the chain
+    // remove the oldest active entity
+    time = cg_activeMarkPolys.prevMark->time;
+
+    while( cg_activeMarkPolys.prevMark && time == cg_activeMarkPolys.prevMark->time )
+      CG_FreeMarkPoly( cg_activeMarkPolys.prevMark );
+  }
+
+  le = cg_freeMarkPolys;
+  cg_freeMarkPolys = cg_freeMarkPolys->nextMark;
+
+  memset( le, 0, sizeof( *le ) );
+
+  // link into the active list
+  le->nextMark = cg_activeMarkPolys.nextMark;
+  le->prevMark = &cg_activeMarkPolys;
+  cg_activeMarkPolys.nextMark->prevMark = le;
+  cg_activeMarkPolys.nextMark = le;
+  return le;
+}
+
+
+
+/*
+=================
+CG_ImpactMark
+
+origin should be a point within a unit of the plane
+dir should be the plane normal
+
+temporary marks will not be stored or randomly oriented, but immediately
+passed to the renderer.
+=================
+*/
+#define MAX_MARK_FRAGMENTS  128
+#define MAX_MARK_POINTS   384
+
+void CG_ImpactMark( qhandle_t markShader, const vec3_t origin, const vec3_t dir,
+                    float orientation, float red, float green, float blue, float alpha,
+                    qboolean alphaFade, float radius, qboolean temporary )
+{
+  vec3_t          axis[ 3 ];
+  float           texCoordScale;
+  vec3_t          originalPoints[ 4 ];
+  byte            colors[ 4 ];
+  int             i, j;
+  int             numFragments;
+  markFragment_t  markFragments[ MAX_MARK_FRAGMENTS ], *mf;
+  vec3_t          markPoints[ MAX_MARK_POINTS ];
+  vec3_t          projection;
+
+  if( !cg_addMarks.integer )
+    return;
+
+  if( radius <= 0 )
+    CG_Error( "CG_ImpactMark called with <= 0 radius" );
+
+  //if ( markTotal >= MAX_MARK_POLYS ) {
+  //  return;
+  //}
+
+  // create the texture axis
+  VectorNormalize2( dir, axis[ 0 ] );
+  PerpendicularVector( axis[ 1 ], axis[ 0 ] );
+  RotatePointAroundVector( axis[ 2 ], axis[ 0 ], axis[ 1 ], orientation );
+  CrossProduct( axis[ 0 ], axis[ 2 ], axis[ 1 ] );
+
+  texCoordScale = 0.5 * 1.0 / radius;
+
+  // create the full polygon
+  for( i = 0; i < 3; i++ )
+  {
+    originalPoints[ 0 ][ i ] = origin[ i ] - radius * axis[ 1 ][ i ] - radius * axis[ 2 ][ i ];
+    originalPoints[ 1 ][ i ] = origin[ i ] + radius * axis[ 1 ][ i ] - radius * axis[ 2 ][ i ];
+    originalPoints[ 2 ][ i ] = origin[ i ] + radius * axis[ 1 ][ i ] + radius * axis[ 2 ][ i ];
+    originalPoints[ 3 ][ i ] = origin[ i ] - radius * axis[ 1 ][ i ] + radius * axis[ 2 ][ i ];
+  }
+
+  // get the fragments
+  VectorScale( dir, -20, projection );
+  numFragments = trap_CM_MarkFragments( 4, (void *)originalPoints,
+          projection, MAX_MARK_POINTS, markPoints[ 0 ],
+          MAX_MARK_FRAGMENTS, markFragments );
+
+  colors[ 0 ] = red * 255;
+  colors[ 1 ] = green * 255;
+  colors[ 2 ] = blue * 255;
+  colors[ 3 ] = alpha * 255;
+
+  for( i = 0, mf = markFragments; i < numFragments; i++, mf++ )
+  {
+    polyVert_t  *v;
+    polyVert_t  verts[ MAX_VERTS_ON_POLY ];
+    markPoly_t  *mark;
+
+    // we have an upper limit on the complexity of polygons
+    // that we store persistantly
+    if( mf->numPoints > MAX_VERTS_ON_POLY )
+      mf->numPoints = MAX_VERTS_ON_POLY;
+
+    for( j = 0, v = verts; j < mf->numPoints; j++, v++ )
+    {
+      vec3_t    delta;
+
+      VectorCopy( markPoints[ mf->firstPoint + j ], v->xyz );
+
+      VectorSubtract( v->xyz, origin, delta );
+      v->st[ 0 ] = 0.5 + DotProduct( delta, axis[ 1 ] ) * texCoordScale;
+      v->st[ 1 ] = 0.5 + DotProduct( delta, axis[ 2 ] ) * texCoordScale;
+      *(int *)v->modulate = *(int *)colors;
+    }
+
+    // if it is a temporary (shadow) mark, add it immediately and forget about it
+    if( temporary )
+    {
+      trap_R_AddPolyToScene( markShader, mf->numPoints, verts );
+      continue;
+    }
+
+    // otherwise save it persistantly
+    mark = CG_AllocMark( );
+    mark->time = cg.time;
+    mark->alphaFade = alphaFade;
+    mark->markShader = markShader;
+    mark->poly.numVerts = mf->numPoints;
+    mark->color[ 0 ] = red;
+    mark->color[ 1 ] = green;
+    mark->color[ 2 ] = blue;
+    mark->color[ 3 ] = alpha;
+    memcpy( mark->verts, verts, mf->numPoints * sizeof( verts[ 0 ] ) );
+    markTotal++;
+  }
+}
+
+
+/*
+===============
+CG_AddMarks
+===============
+*/
+#define MARK_TOTAL_TIME   10000
+#define MARK_FADE_TIME    1000
+
+void CG_AddMarks( void )
+{
+  int         j;
+  markPoly_t  *mp, *next;
+  int         t;
+  int         fade;
+
+  if( !cg_addMarks.integer )
+    return;
+
+  mp = cg_activeMarkPolys.nextMark;
+  for ( ; mp != &cg_activeMarkPolys; mp = next )
+  {
+    // grab next now, so if the local entity is freed we
+    // still have it
+    next = mp->nextMark;
+
+    // see if it is time to completely remove it
+    if( cg.time > mp->time + MARK_TOTAL_TIME )
+    {
+      CG_FreeMarkPoly( mp );
+      continue;
+    }
+
+    // fade all marks out with time
+    t = mp->time + MARK_TOTAL_TIME - cg.time;
+    if( t < MARK_FADE_TIME )
+    {
+      fade = 255 * t / MARK_FADE_TIME;
+      if( mp->alphaFade )
+      {
+        for( j = 0; j < mp->poly.numVerts; j++ )
+          mp->verts[ j ].modulate[ 3 ] = fade;
+      }
+      else
+      {
+        for( j = 0; j < mp->poly.numVerts; j++ )
+        {
+          mp->verts[ j ].modulate[ 0 ] = mp->color[ 0 ] * fade;
+          mp->verts[ j ].modulate[ 1 ] = mp->color[ 1 ] * fade;
+          mp->verts[ j ].modulate[ 2 ] = mp->color[ 2 ] * fade;
+        }
+      }
+    }
+
+    trap_R_AddPolyToScene( mp->markShader, mp->poly.numVerts, mp->verts );
+  }
+}
+

src/cgame/cg_mem.c

@@ -0,0 +1,202 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "cg_local.h"
+
+#define POOLSIZE      (256 * 1024)
+#define FREEMEMCOOKIE ((int)0xDEADBE3F) // Any unlikely to be used value
+#define ROUNDBITS     31          // Round to 32 bytes
+
+struct freememnode
+{
+  // Size of ROUNDBITS
+  int cookie, size;       // Size includes node (obviously)
+  struct freememnode *prev, *next;
+};
+
+static char   memoryPool[ POOLSIZE ];
+static struct freememnode *freehead;
+static int    freemem;
+
+void *CG_Alloc( int size )
+{
+  // Find a free block and allocate.
+  // Does two passes, attempts to fill same-sized free slot first.
+
+  struct freememnode *fmn, *prev, *next, *smallest;
+  int allocsize, smallestsize;
+  char *endptr;
+  int *ptr;
+
+  allocsize = ( size + sizeof(int) + ROUNDBITS ) & ~ROUNDBITS;    // Round to 32-byte boundary
+  ptr = NULL;
+
+  smallest = NULL;
+  smallestsize = POOLSIZE + 1;    // Guaranteed not to miss any slots :)
+  for( fmn = freehead; fmn; fmn = fmn->next )
+  {
+    if( fmn->cookie != FREEMEMCOOKIE )
+      CG_Error( "CG_Alloc: Memory corruption detected!\n" );
+
+    if( fmn->size >= allocsize )
+    {
+      // We've got a block
+      if( fmn->size == allocsize )
+      {
+        // Same size, just remove
+
+        prev = fmn->prev;
+        next = fmn->next;
+        if( prev )
+          prev->next = next;      // Point previous node to next
+        if( next )
+          next->prev = prev;      // Point next node to previous
+        if( fmn == freehead )
+          freehead = next;      // Set head pointer to next
+        ptr = (int *) fmn;
+        break;              // Stop the loop, this is fine
+      }
+      else
+      {
+        // Keep track of the smallest free slot
+        if( fmn->size < smallestsize )
+        {
+          smallest = fmn;
+          smallestsize = fmn->size;
+        }
+      }
+    }
+  }
+
+  if( !ptr && smallest )
+  {
+    // We found a slot big enough
+    smallest->size -= allocsize;
+    endptr = (char *) smallest + smallest->size;
+    ptr = (int *) endptr;
+  }
+
+  if( ptr )
+  {
+    freemem -= allocsize;
+    if( cg_debugAlloc.integer )
+      CG_Printf( "CG_Alloc of %i bytes (%i left)\n", allocsize, freemem );
+    memset( ptr, 0, allocsize );
+    *ptr++ = allocsize;       // Store a copy of size for deallocation
+    return( (void *) ptr );
+  }
+
+  CG_Error( "CG_Alloc: failed on allocation of %i bytes\n", size );
+  return( NULL );
+}
+
+void CG_Free( void *ptr )
+{
+  // Release allocated memory, add it to the free list.
+
+  struct freememnode *fmn;
+  char *freeend;
+  int *freeptr;
+
+  freeptr = ptr;
+  freeptr--;
+
+  freemem += *freeptr;
+  if( cg_debugAlloc.integer )
+    CG_Printf( "CG_Free of %i bytes (%i left)\n", *freeptr, freemem );
+
+  for( fmn = freehead; fmn; fmn = fmn->next )
+  {
+    freeend = ((char *) fmn) + fmn->size;
+    if( freeend == (char *) freeptr )
+    {
+      // Released block can be merged to an existing node
+
+      fmn->size += *freeptr;    // Add size of node.
+      return;
+    }
+  }
+  // No merging, add to head of list
+
+  fmn = (struct freememnode *) freeptr;
+  fmn->size = *freeptr;       // Set this first to avoid corrupting *freeptr
+  fmn->cookie = FREEMEMCOOKIE;
+  fmn->prev = NULL;
+  fmn->next = freehead;
+  freehead->prev = fmn;
+  freehead = fmn;
+}
+
+void CG_InitMemory( void )
+{
+  // Set up the initial node
+
+  freehead = (struct freememnode *) memoryPool;
+  freehead->cookie = FREEMEMCOOKIE;
+  freehead->size = POOLSIZE;
+  freehead->next = NULL;
+  freehead->prev = NULL;
+  freemem = sizeof(memoryPool);
+}
+
+void CG_DefragmentMemory( void )
+{
+  // If there's a frenzy of deallocation and we want to
+  // allocate something big, this is useful. Otherwise...
+  // not much use.
+
+  struct freememnode *startfmn, *endfmn, *fmn;
+
+  for( startfmn = freehead; startfmn; )
+  {
+    endfmn = (struct freememnode *)(((char *) startfmn) + startfmn->size);
+    for( fmn = freehead; fmn; )
+    {
+      if( fmn->cookie != FREEMEMCOOKIE )
+        CG_Error( "CG_DefragmentMemory: Memory corruption detected!\n" );
+
+      if( fmn == endfmn )
+      {
+        // We can add fmn onto startfmn.
+
+        if( fmn->prev )
+          fmn->prev->next = fmn->next;
+        if( fmn->next )
+        {
+          if( !(fmn->next->prev = fmn->prev) )
+            freehead = fmn->next; // We're removing the head node
+        }
+        startfmn->size += fmn->size;
+        memset( fmn, 0, sizeof(struct freememnode) ); // A redundant call, really.
+
+        startfmn = freehead;
+        endfmn = fmn = NULL;        // Break out of current loop
+      }
+      else
+        fmn = fmn->next;
+    }
+
+    if( endfmn )
+      startfmn = startfmn->next;    // endfmn acts as a 'restart' flag here
+  }
+}

src/cgame/cg_playerstate.c

@@ -0,0 +1,317 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_playerstate.c -- this file acts on changes in a new playerState_t
+// With normal play, this will be done after local prediction, but when
+// following another player or playing back a demo, it will be checked
+// when the snapshot transitions like all the other entities
+
+
+#include "cg_local.h"
+
+/*
+==============
+CG_DamageFeedback
+==============
+*/
+void CG_DamageFeedback( int yawByte, int pitchByte, int damage )
+{
+  float   left, front, up;
+  float   kick;
+  int     health;
+  float   scale;
+  vec3_t  dir;
+  vec3_t  angles;
+  float   dist;
+  float   yaw, pitch;
+
+  // show the attacking player's head and name in corner
+  cg.attackerTime = cg.time;
+
+  // the lower on health you are, the greater the view kick will be
+  health = cg.snap->ps.stats[STAT_HEALTH];
+
+  if( health < 40 )
+    scale = 1;
+  else
+    scale = 40.0 / health;
+
+  kick = damage * scale;
+
+  if( kick < 5 )
+    kick = 5;
+
+  if( kick > 10 )
+    kick = 10;
+
+  // if yaw and pitch are both 255, make the damage always centered (falling, etc)
+  if( yawByte == 255 && pitchByte == 255 )
+  {
+    cg.damageX = 0;
+    cg.damageY = 0;
+    cg.v_dmg_roll = 0;
+    cg.v_dmg_pitch = -kick;
+  }
+  else
+  {
+    // positional
+    pitch = pitchByte / 255.0 * 360;
+    yaw = yawByte / 255.0 * 360;
+
+    angles[ PITCH ] = pitch;
+    angles[ YAW ] = yaw;
+    angles[ ROLL ] = 0;
+
+    AngleVectors( angles, dir, NULL, NULL );
+    VectorSubtract( vec3_origin, dir, dir );
+
+    front = DotProduct( dir, cg.refdef.viewaxis[ 0 ] );
+    left = DotProduct( dir, cg.refdef.viewaxis[ 1 ] );
+    up = DotProduct( dir, cg.refdef.viewaxis[ 2 ] );
+
+    dir[ 0 ] = front;
+    dir[ 1 ] = left;
+    dir[ 2 ] = 0;
+    dist = VectorLength( dir );
+
+    if( dist < 0.1f )
+      dist = 0.1f;
+
+    cg.v_dmg_roll = kick * left;
+
+    cg.v_dmg_pitch = -kick * front;
+
+    if( front <= 0.1 )
+      front = 0.1f;
+
+    cg.damageX = -left / front;
+    cg.damageY = up / dist;
+  }
+
+  // clamp the position
+  if( cg.damageX > 1.0 )
+    cg.damageX = 1.0;
+
+  if( cg.damageX < - 1.0 )
+    cg.damageX = -1.0;
+
+  if( cg.damageY > 1.0 )
+    cg.damageY = 1.0;
+
+  if( cg.damageY < - 1.0 )
+    cg.damageY = -1.0;
+
+  // don't let the screen flashes vary as much
+  if( kick > 10 )
+    kick = 10;
+
+  cg.damageValue = kick;
+  cg.v_dmg_time = cg.time + DAMAGE_TIME;
+  cg.damageTime = cg.snap->serverTime;
+}
+
+
+
+
+/*
+================
+CG_Respawn
+
+A respawn happened this snapshot
+================
+*/
+void CG_Respawn( void )
+{
+  // no error decay on player movement
+  cg.thisFrameTeleport = qtrue;
+
+  // display weapons available
+  cg.weaponSelectTime = cg.time;
+
+  // select the weapon the server says we are using
+  cg.weaponSelect = cg.snap->ps.weapon;
+
+  CG_ResetPainBlend( );
+}
+
+/*
+==============
+CG_CheckPlayerstateEvents
+
+==============
+*/
+void CG_CheckPlayerstateEvents( playerState_t *ps, playerState_t *ops )
+{
+  int       i;
+  int       event;
+  centity_t *cent;
+
+  if( ps->externalEvent && ps->externalEvent != ops->externalEvent )
+  {
+    cent = &cg_entities[ ps->clientNum ];
+    cent->currentState.event = ps->externalEvent;
+    cent->currentState.eventParm = ps->externalEventParm;
+    CG_EntityEvent( cent, cent->lerpOrigin );
+  }
+
+  cent = &cg.predictedPlayerEntity; // cg_entities[ ps->clientNum ];
+
+  // go through the predictable events buffer
+  for( i = ps->eventSequence - MAX_PS_EVENTS; i < ps->eventSequence; i++ )
+  {
+    // if we have a new predictable event
+    if( i >= ops->eventSequence ||
+      // or the server told us to play another event instead of a predicted event we already issued
+      // or something the server told us changed our prediction causing a different event
+      ( i > ops->eventSequence - MAX_PS_EVENTS && ps->events[ i & ( MAX_PS_EVENTS - 1 ) ] !=
+        ops->events[ i & ( MAX_PS_EVENTS - 1 ) ] ) )
+    {
+      event = ps->events[ i & ( MAX_PS_EVENTS - 1 ) ];
+
+      cent->currentState.event = event;
+      cent->currentState.eventParm = ps->eventParms[ i & ( MAX_PS_EVENTS - 1 ) ];
+      CG_EntityEvent( cent, cent->lerpOrigin );
+      cg.predictableEvents[ i & ( MAX_PREDICTED_EVENTS - 1 ) ] = event;
+
+      cg.eventSequence++;
+    }
+  }
+}
+
+
+/*
+==================
+CG_CheckChangedPredictableEvents
+==================
+*/
+void CG_CheckChangedPredictableEvents( playerState_t *ps )
+{
+  int       i;
+  int       event;
+  centity_t *cent;
+
+  cent = &cg.predictedPlayerEntity;
+
+  for( i = ps->eventSequence - MAX_PS_EVENTS; i < ps->eventSequence; i++ )
+  {
+    //
+    if( i >= cg.eventSequence )
+      continue;
+
+    // if this event is not further back in than the maximum predictable events we remember
+    if( i > cg.eventSequence - MAX_PREDICTED_EVENTS )
+    {
+      // if the new playerstate event is different from a previously predicted one
+      if( ps->events[ i & ( MAX_PS_EVENTS - 1 ) ] != cg.predictableEvents[ i & ( MAX_PREDICTED_EVENTS - 1 ) ] )
+      {
+        event = ps->events[ i & ( MAX_PS_EVENTS - 1 ) ];
+        cent->currentState.event = event;
+        cent->currentState.eventParm = ps->eventParms[ i & ( MAX_PS_EVENTS - 1 ) ];
+        CG_EntityEvent( cent, cent->lerpOrigin );
+
+        cg.predictableEvents[ i & ( MAX_PREDICTED_EVENTS - 1 ) ] = event;
+
+        if( cg_showmiss.integer )
+          CG_Printf( "WARNING: changed predicted event\n" );
+      }
+    }
+  }
+}
+
+/*
+==================
+CG_CheckLocalSounds
+==================
+*/
+void CG_CheckLocalSounds( playerState_t *ps, playerState_t *ops )
+{
+  int reward;
+
+  // don't play the sounds if the player just changed teams
+  if( ps->persistant[ PERS_TEAM ] != ops->persistant[ PERS_TEAM ] )
+    return;
+
+  // health changes of more than -1 should make pain sounds
+  if( ps->stats[ STAT_HEALTH ] < ops->stats[ STAT_HEALTH ] - 1 )
+  {
+    if( ps->stats[ STAT_HEALTH ] > 0 )
+      CG_PainEvent( &cg.predictedPlayerEntity, ps->stats[ STAT_HEALTH ] );
+  }
+
+
+  // if we are going into the intermission, don't start any voices
+  if( cg.intermissionStarted )
+    return;
+
+  // reward sounds
+  reward = qfalse;
+}
+
+
+/*
+===============
+CG_TransitionPlayerState
+
+===============
+*/
+void CG_TransitionPlayerState( playerState_t *ps, playerState_t *ops )
+{
+  // check for changing follow mode
+  if( ps->clientNum != ops->clientNum )
+  {
+    cg.thisFrameTeleport = qtrue;
+    // make sure we don't get any unwanted transition effects
+    *ops = *ps;
+
+    CG_ResetPainBlend( );
+  }
+
+  // damage events (player is getting wounded)
+  if( ps->damageEvent != ops->damageEvent && ps->damageCount )
+    CG_DamageFeedback( ps->damageYaw, ps->damagePitch, ps->damageCount );
+
+  // respawning
+  if( ps->persistant[ PERS_SPAWN_COUNT ] != ops->persistant[ PERS_SPAWN_COUNT ] )
+    CG_Respawn( );
+
+  if( cg.mapRestart )
+  {
+    CG_Respawn( );
+    cg.mapRestart = qfalse;
+  }
+
+  if( cg.snap->ps.pm_type != PM_INTERMISSION &&
+      ps->persistant[ PERS_TEAM ] != TEAM_SPECTATOR )
+    CG_CheckLocalSounds( ps, ops );
+
+  // run events
+  CG_CheckPlayerstateEvents( ps, ops );
+
+  // smooth the ducking viewheight change
+  if( ps->viewheight != ops->viewheight )
+  {
+    cg.duckChange = ps->viewheight - ops->viewheight;
+    cg.duckTime = cg.time;
+  }
+}
+

src/cgame/cg_predict.c

@@ -0,0 +1,878 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_predict.c -- this file generates cg.predictedPlayerState by either
+// interpolating between snapshots from the server or locally predicting
+// ahead the client's movement.
+// It also handles local physics interaction, like fragments bouncing off walls
+
+
+#include "cg_local.h"
+
+static  pmove_t   cg_pmove;
+
+static  int     cg_numSolidEntities;
+static  centity_t *cg_solidEntities[MAX_ENTITIES_IN_SNAPSHOT];
+static  int     cg_numTriggerEntities;
+static  centity_t *cg_triggerEntities[MAX_ENTITIES_IN_SNAPSHOT];
+
+/*
+====================
+CG_BuildSolidList
+
+When a new cg.snap has been set, this function builds a sublist
+of the entities that are actually solid, to make for more
+efficient collision detection
+====================
+*/
+void CG_BuildSolidList( void )
+{
+  int           i;
+  centity_t     *cent;
+  snapshot_t    *snap;
+  entityState_t *ent;
+
+  cg_numSolidEntities = 0;
+  cg_numTriggerEntities = 0;
+
+  if( cg.nextSnap && !cg.nextFrameTeleport && !cg.thisFrameTeleport )
+    snap = cg.nextSnap;
+  else
+    snap = cg.snap;
+
+  for( i = 0; i < snap->numEntities; i++ )
+  {
+    cent = &cg_entities[ snap->entities[ i ].number ];
+    ent = &cent->currentState;
+
+    if( ent->eType == ET_ITEM || ent->eType == ET_PUSH_TRIGGER || ent->eType == ET_TELEPORT_TRIGGER )
+    {
+      cg_triggerEntities[ cg_numTriggerEntities ] = cent;
+      cg_numTriggerEntities++;
+      continue;
+    }
+
+    if( cent->nextState.solid && ent->eType != ET_MISSILE )
+    {
+      cg_solidEntities[ cg_numSolidEntities ] = cent;
+      cg_numSolidEntities++;
+      continue;
+    }
+  }
+}
+
+/*
+====================
+CG_ClipMoveToEntities
+
+====================
+*/
+static void CG_ClipMoveToEntities ( const vec3_t start, const vec3_t mins,
+    const vec3_t maxs, const vec3_t end, int skipNumber,
+    int mask, trace_t *tr, traceType_t collisionType )
+{
+  int           i, j, x, zd, zu;
+  trace_t       trace;
+  entityState_t *ent;
+  clipHandle_t  cmodel;
+  vec3_t        bmins, bmaxs;
+  vec3_t        origin, angles;
+  centity_t     *cent;
+
+  //SUPAR HACK
+  //this causes a trace to collide with the local player
+  if( skipNumber == MAGIC_TRACE_HACK )
+    j = cg_numSolidEntities + 1;
+  else
+    j = cg_numSolidEntities;
+
+  for( i = 0; i < j; i++ )
+  {
+    if( i < cg_numSolidEntities )
+      cent = cg_solidEntities[ i ];
+    else
+      cent = &cg.predictedPlayerEntity;
+
+    ent = &cent->currentState;
+
+    if( ent->number == skipNumber )
+      continue;
+
+    if( ent->solid == SOLID_BMODEL )
+    {
+      // special value for bmodel
+      cmodel = trap_CM_InlineModel( ent->modelindex );
+      VectorCopy( cent->lerpAngles, angles );
+      BG_EvaluateTrajectory( &cent->currentState.pos, cg.physicsTime, origin );
+    }
+    else
+    {
+      // encoded bbox
+      x = ( ent->solid & 255 );
+      zd = ( ( ent->solid >> 8 ) & 255 );
+      zu = ( ( ent->solid >> 16 ) & 255 ) - 32;
+
+      bmins[ 0 ] = bmins[ 1 ] = -x;
+      bmaxs[ 0 ] = bmaxs[ 1 ] = x;
+      bmins[ 2 ] = -zd;
+      bmaxs[ 2 ] = zu;
+
+      if( i == cg_numSolidEntities )
+        BG_FindBBoxForClass( ( ent->powerups >> 8 ) & 0xFF, bmins, bmaxs, NULL, NULL, NULL );
+
+      cmodel = trap_CM_TempBoxModel( bmins, bmaxs );
+      VectorCopy( vec3_origin, angles );
+      VectorCopy( cent->lerpOrigin, origin );
+    }
+
+
+    if( collisionType == TT_CAPSULE )
+    {
+      trap_CM_TransformedCapsuleTrace ( &trace, start, end,
+        mins, maxs, cmodel,  mask, origin, angles );
+    }
+    else if( collisionType == TT_AABB )
+    {
+      trap_CM_TransformedBoxTrace ( &trace, start, end,
+        mins, maxs, cmodel,  mask, origin, angles );
+    }
+    else if( collisionType == TT_BISPHERE )
+    {
+      trap_CM_TransformedBiSphereTrace( &trace, start, end,
+        mins[ 0 ], maxs[ 0 ], cmodel, mask, origin );
+    }
+
+    if( trace.allsolid || trace.fraction < tr->fraction )
+    {
+      trace.entityNum = ent->number;
+
+      if( tr->lateralFraction < trace.lateralFraction )
+      {
+        float oldLateralFraction = tr->lateralFraction;
+        *tr = trace;
+        tr->lateralFraction = oldLateralFraction;
+      }
+      else
+        *tr = trace;
+    }
+    else if( trace.startsolid )
+      tr->startsolid = qtrue;
+
+    if( tr->allsolid )
+      return;
+  }
+}
+
+/*
+================
+CG_Trace
+================
+*/
+void  CG_Trace( trace_t *result, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end,
+                int skipNumber, int mask )
+{
+  trace_t t;
+
+  trap_CM_BoxTrace( &t, start, end, mins, maxs, 0, mask );
+  t.entityNum = t.fraction != 1.0 ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
+  // check all other solid models
+  CG_ClipMoveToEntities( start, mins, maxs, end, skipNumber, mask, &t, TT_AABB );
+
+  *result = t;
+}
+
+/*
+================
+CG_CapTrace
+================
+*/
+void  CG_CapTrace( trace_t *result, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end,
+                   int skipNumber, int mask )
+{
+  trace_t t;
+
+  trap_CM_CapsuleTrace( &t, start, end, mins, maxs, 0, mask );
+  t.entityNum = t.fraction != 1.0 ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
+  // check all other solid models
+  CG_ClipMoveToEntities( start, mins, maxs, end, skipNumber, mask, &t, TT_CAPSULE );
+
+  *result = t;
+}
+
+/*
+================
+CG_BiSphereTrace
+================
+*/
+void CG_BiSphereTrace( trace_t *result, const vec3_t start, const vec3_t end,
+    const float startRadius, const float endRadius, int skipNumber, int mask )
+{
+  trace_t t;
+  vec3_t  mins, maxs;
+
+  mins[ 0 ] = startRadius;
+  maxs[ 0 ] = endRadius;
+
+  trap_CM_BiSphereTrace( &t, start, end, startRadius, endRadius, 0, mask );
+  t.entityNum = t.fraction != 1.0 ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
+  // check all other solid models
+  CG_ClipMoveToEntities( start, mins, maxs, end, skipNumber, mask, &t, TT_BISPHERE );
+
+  *result = t;
+}
+
+/*
+================
+CG_PointContents
+================
+*/
+int   CG_PointContents( const vec3_t point, int passEntityNum )
+{
+  int           i;
+  entityState_t *ent;
+  centity_t     *cent;
+  clipHandle_t  cmodel;
+  int           contents;
+
+  contents = trap_CM_PointContents (point, 0);
+
+  for( i = 0; i < cg_numSolidEntities; i++ )
+  {
+    cent = cg_solidEntities[ i ];
+
+    ent = &cent->currentState;
+
+    if( ent->number == passEntityNum )
+      continue;
+
+    if( ent->solid != SOLID_BMODEL ) // special value for bmodel
+      continue;
+
+    cmodel = trap_CM_InlineModel( ent->modelindex );
+
+    if( !cmodel )
+      continue;
+
+    contents |= trap_CM_TransformedPointContents( point, cmodel, ent->origin, ent->angles );
+  }
+
+  return contents;
+}
+
+
+/*
+========================
+CG_InterpolatePlayerState
+
+Generates cg.predictedPlayerState by interpolating between
+cg.snap->player_state and cg.nextFrame->player_state
+========================
+*/
+static void CG_InterpolatePlayerState( qboolean grabAngles )
+{
+  float         f;
+  int           i;
+  playerState_t *out;
+  snapshot_t    *prev, *next;
+
+  out = &cg.predictedPlayerState;
+  prev = cg.snap;
+  next = cg.nextSnap;
+
+  *out = cg.snap->ps;
+
+  // if we are still allowing local input, short circuit the view angles
+  if( grabAngles )
+  {
+    usercmd_t cmd;
+    int     cmdNum;
+
+    cmdNum = trap_GetCurrentCmdNumber( );
+    trap_GetUserCmd( cmdNum, &cmd );
+
+    PM_UpdateViewAngles( out, &cmd );
+  }
+
+  // if the next frame is a teleport, we can't lerp to it
+  if( cg.nextFrameTeleport )
+    return;
+
+  if( !next || next->serverTime <= prev->serverTime )
+    return;
+
+  f = (float)( cg.time - prev->serverTime ) / ( next->serverTime - prev->serverTime );
+
+  i = next->ps.bobCycle;
+  if( i < prev->ps.bobCycle )
+    i += 256;   // handle wraparound
+
+  out->bobCycle = prev->ps.bobCycle + f * ( i - prev->ps.bobCycle );
+
+  for( i = 0; i < 3; i++ )
+  {
+    out->origin[ i ] = prev->ps.origin[ i ] + f * ( next->ps.origin[ i ] - prev->ps.origin[ i ] );
+
+    if( !grabAngles )
+      out->viewangles[ i ] = LerpAngle( prev->ps.viewangles[ i ], next->ps.viewangles[ i ], f );
+
+    out->velocity[ i ] = prev->ps.velocity[ i ] +
+      f * (next->ps.velocity[ i ] - prev->ps.velocity[ i ] );
+  }
+}
+
+
+/*
+=========================
+CG_TouchTriggerPrediction
+
+Predict push triggers and items
+=========================
+*/
+static void CG_TouchTriggerPrediction( void )
+{
+  int           i;
+  trace_t       trace;
+  entityState_t *ent;
+  clipHandle_t  cmodel;
+  centity_t     *cent;
+  qboolean      spectator;
+
+  // dead clients don't activate triggers
+  if( cg.predictedPlayerState.stats[ STAT_HEALTH ] <= 0 )
+    return;
+
+  spectator = ( cg.predictedPlayerState.pm_type == PM_SPECTATOR );
+
+  if( cg.predictedPlayerState.pm_type != PM_NORMAL && !spectator )
+    return;
+
+  for( i = 0; i < cg_numTriggerEntities; i++ )
+  {
+    cent = cg_triggerEntities[ i ];
+    ent = &cent->currentState;
+
+    if( ent->solid != SOLID_BMODEL )
+      continue;
+
+    cmodel = trap_CM_InlineModel( ent->modelindex );
+    if( !cmodel )
+      continue;
+
+    trap_CM_BoxTrace( &trace, cg.predictedPlayerState.origin, cg.predictedPlayerState.origin,
+                      cg_pmove.mins, cg_pmove.maxs, cmodel, -1 );
+
+    if( !trace.startsolid )
+      continue;
+
+    if( ent->eType == ET_TELEPORT_TRIGGER )
+      cg.hyperspace = qtrue;
+  }
+}
+
+static int CG_IsUnacceptableError( playerState_t *ps, playerState_t *pps )
+{
+  vec3_t delta;
+  int i;
+
+  if( pps->pm_type != ps->pm_type ||
+    pps->pm_flags != ps->pm_flags ||
+    pps->pm_time != ps->pm_time )
+  {
+    return 1;
+  }
+
+  VectorSubtract( pps->origin, ps->origin, delta );
+  if( VectorLengthSquared( delta ) > 0.1f * 0.1f )
+  {
+    if( cg_showmiss.integer )
+    {
+      CG_Printf( "origin delta: %.2f  ", VectorLength( delta ) );
+    }
+    return 2;
+  }
+
+  VectorSubtract( pps->velocity, ps->velocity, delta );
+  if( VectorLengthSquared( delta ) > 0.1f * 0.1f )
+  {
+    if( cg_showmiss.integer )
+    {
+      CG_Printf( "velocity delta: %.2f  ", VectorLength( delta ) );
+    }
+    return 3;
+  }
+
+  if( pps->weaponTime != ps->weaponTime ||
+    pps->gravity != ps->gravity ||
+    pps->speed != ps->speed ||
+    pps->delta_angles[ 0 ] != ps->delta_angles[ 0 ] ||
+    pps->delta_angles[ 1 ] != ps->delta_angles[ 1 ] ||
+    pps->delta_angles[ 2 ] != ps->delta_angles[ 2 ] || 
+    pps->groundEntityNum != ps->groundEntityNum )
+  {
+    return 4;
+  }
+
+  if( pps->legsTimer != ps->legsTimer ||
+    pps->legsAnim != ps->legsAnim ||
+    pps->torsoTimer != ps->torsoTimer ||
+    pps->torsoAnim != ps->torsoAnim ||
+    pps->movementDir != ps->movementDir )
+  {
+    return 5;
+  }
+
+  VectorSubtract( pps->grapplePoint, ps->grapplePoint, delta );
+  if( VectorLengthSquared( delta ) > 0.1f * 0.1f )
+    return 6;
+
+  if( pps->eFlags != ps->eFlags )
+    return 7;
+
+  if( pps->eventSequence != ps->eventSequence )
+    return 8;
+
+  for( i = 0; i < MAX_PS_EVENTS; i++ )
+  {
+    if ( pps->events[ i ] != ps->events[ i ] ||
+      pps->eventParms[ i ] != ps->eventParms[ i ] )
+    {
+      return 9;
+    }
+  }
+
+  if( pps->externalEvent != ps->externalEvent ||
+    pps->externalEventParm != ps->externalEventParm ||
+    pps->externalEventTime != ps->externalEventTime )
+  {
+    return 10;
+  }
+
+  if( pps->clientNum != ps->clientNum ||
+    pps->weapon != ps->weapon ||
+    pps->weaponstate != ps->weaponstate )
+  {
+    return 11;
+  }
+
+  if( fabs( AngleDelta( ps->viewangles[ 0 ], pps->viewangles[ 0 ] ) ) > 1.0f ||
+    fabs( AngleDelta( ps->viewangles[ 1 ], pps->viewangles[ 1 ] ) ) > 1.0f ||
+    fabs( AngleDelta( ps->viewangles[ 2 ], pps->viewangles[ 2 ] ) ) > 1.0f ) 
+  {
+    return 12;
+  }
+
+  if( pps->viewheight != ps->viewheight )
+  	return 13;
+
+  if( pps->damageEvent != ps->damageEvent ||
+    pps->damageYaw != ps->damageYaw ||
+    pps->damagePitch != ps->damagePitch ||
+    pps->damageCount != ps->damageCount )
+  {
+    return 14;
+  }
+
+  for( i = 0; i < MAX_STATS; i++ )
+  {
+    if( pps->stats[ i ] != ps->stats[ i ] )
+      return 15;
+  }
+
+  for( i = 0; i < MAX_PERSISTANT; i++ )
+  {
+    if( pps->persistant[ i ] != ps->persistant[ i ] )
+      return 16;
+  }
+
+  for( i = 0; i < MAX_WEAPONS; i++ )
+  {
+    if( pps->ammo[ i ] != ps->ammo[ i ] )
+      return 18;
+  }
+
+  if( pps->generic1 != ps->generic1 ||
+    pps->loopSound != ps->loopSound )
+  {
+    return 19;
+  }
+
+  return 0;
+}
+
+
+/*
+=================
+CG_PredictPlayerState
+
+Generates cg.predictedPlayerState for the current cg.time
+cg.predictedPlayerState is guaranteed to be valid after exiting.
+
+For demo playback, this will be an interpolation between two valid
+playerState_t.
+
+For normal gameplay, it will be the result of predicted usercmd_t on
+top of the most recent playerState_t received from the server.
+
+Each new snapshot will usually have one or more new usercmd over the last,
+but we simulate all unacknowledged commands each time, not just the new ones.
+This means that on an internet connection, quite a few pmoves may be issued
+each frame.
+
+OPTIMIZE: don't re-simulate unless the newly arrived snapshot playerState_t
+differs from the predicted one.  Would require saving all intermediate
+playerState_t during prediction.
+
+We detect prediction errors and allow them to be decayed off over several frames
+to ease the jerk.
+=================
+*/
+void CG_PredictPlayerState( void )
+{
+  int     cmdNum, current, i;
+  playerState_t oldPlayerState;
+  qboolean  moved;
+  usercmd_t oldestCmd;
+  usercmd_t latestCmd;
+  int stateIndex = 0, predictCmd = 0;
+
+  cg.hyperspace = qfalse; // will be set if touching a trigger_teleport
+
+  // if this is the first frame we must guarantee
+  // predictedPlayerState is valid even if there is some
+  // other error condition
+  if( !cg.validPPS )
+  {
+    cg.validPPS = qtrue;
+    cg.predictedPlayerState = cg.snap->ps;
+  }
+
+
+  // demo playback just copies the moves
+  if( cg.demoPlayback || (cg.snap->ps.pm_flags & PMF_FOLLOW) )
+  {
+    CG_InterpolatePlayerState( qfalse );
+    return;
+  }
+
+  // non-predicting local movement will grab the latest angles
+  if( cg_nopredict.integer || cg_synchronousClients.integer )
+  {
+    CG_InterpolatePlayerState( qtrue );
+    return;
+  }
+
+  // prepare for pmove
+  cg_pmove.ps = &cg.predictedPlayerState;
+  cg_pmove.pmext = &cg.pmext;
+  cg_pmove.trace = CG_Trace;
+  cg_pmove.pointcontents = CG_PointContents;
+  cg_pmove.debugLevel = cg_debugMove.integer;
+
+  if( cg_pmove.ps->pm_type == PM_DEAD )
+    cg_pmove.tracemask = MASK_PLAYERSOLID & ~CONTENTS_BODY;
+  else
+    cg_pmove.tracemask = MASK_PLAYERSOLID;
+
+  if( cg.snap->ps.persistant[ PERS_TEAM ] == TEAM_SPECTATOR )
+    cg_pmove.tracemask &= ~CONTENTS_BODY; // spectators can fly through bodies
+
+  cg_pmove.noFootsteps = 0;
+
+  // save the state before the pmove so we can detect transitions
+  oldPlayerState = cg.predictedPlayerState;
+
+  current = trap_GetCurrentCmdNumber( );
+
+  // if we don't have the commands right after the snapshot, we
+  // can't accurately predict a current position, so just freeze at
+  // the last good position we had
+  cmdNum = current - CMD_BACKUP + 1;
+  trap_GetUserCmd( cmdNum, &oldestCmd );
+
+  if( oldestCmd.serverTime > cg.snap->ps.commandTime &&
+      oldestCmd.serverTime < cg.time )
+  { // special check for map_restart
+    if( cg_showmiss.integer )
+      CG_Printf( "exceeded PACKET_BACKUP on commands\n" );
+
+    return;
+  }
+
+  // get the latest command so we can know which commands are from previous map_restarts
+  trap_GetUserCmd( current, &latestCmd );
+
+  // get the most recent information we have, even if
+  // the server time is beyond our current cg.time,
+  // because predicted player positions are going to
+  // be ahead of everything else anyway
+  if( cg.nextSnap && !cg.nextFrameTeleport && !cg.thisFrameTeleport )
+  {
+    cg.predictedPlayerState = cg.nextSnap->ps;
+    cg.physicsTime = cg.nextSnap->serverTime;
+  }
+  else
+  {
+    cg.predictedPlayerState = cg.snap->ps;
+    cg.physicsTime = cg.snap->serverTime;
+  }
+
+  if( pmove_msec.integer < 8 )
+    trap_Cvar_Set( "pmove_msec", "8" );
+  else if( pmove_msec.integer > 33 )
+    trap_Cvar_Set( "pmove_msec", "33" );
+
+  cg_pmove.pmove_fixed = pmove_fixed.integer;// | cg_pmove_fixed.integer;
+  cg_pmove.pmove_msec = pmove_msec.integer;
+
+  // Like the comments described above, a player's state is entirely
+  // re-predicted from the last valid snapshot every client frame, which
+  // can be really, really, really slow.  Every old command has to be
+  // run again.  For every client frame that is *not* directly after a
+  // snapshot, this is unnecessary, since we have no new information.
+  // For those, we'll play back the predictions from the last frame and
+  // predict only the newest commands.  Essentially, we'll be doing
+  // an incremental predict instead of a full predict.
+  //
+  // If we have a new snapshot, we can compare its player state's command
+  // time to the command times in the queue to find a match.  If we find
+  // a matching state, and the predicted version has not deviated, we can
+  // use the predicted state as a base - and also do an incremental predict.
+  //
+  // With this method, we get incremental predicts on every client frame
+  // except a frame following a new snapshot in which there was a prediction
+  // error.  This yeilds anywhere from a 15% to 40% performance increase,
+  // depending on how much of a bottleneck the CPU is.
+  if( cg_optimizePrediction.integer )
+  {
+    if( cg.nextFrameTeleport || cg.thisFrameTeleport )
+    {
+      // do a full predict
+      cg.lastPredictedCommand = 0;
+      cg.stateTail = cg.stateHead;
+      predictCmd = current - CMD_BACKUP + 1;
+    }
+    // cg.physicsTime is the current snapshot's serverTime if it's the same
+    // as the last one
+    else if( cg.physicsTime == cg.lastServerTime )
+    {
+      // we have no new information, so do an incremental predict
+      predictCmd = cg.lastPredictedCommand + 1;
+    }
+    else
+    {
+      // we have a new snapshot
+      int i;
+      int errorcode;
+      qboolean error = qtrue;
+
+      // loop through the saved states queue
+      for( i = cg.stateHead; i != cg.stateTail;
+        i = ( i + 1 ) % NUM_SAVED_STATES )
+      {
+        // if we find a predicted state whose commandTime matches the snapshot
+        // player state's commandTime
+        if( cg.savedPmoveStates[ i ].commandTime !=
+          cg.predictedPlayerState.commandTime )
+        {
+          continue;
+        }
+        // make sure the state differences are acceptable
+        errorcode = CG_IsUnacceptableError( &cg.predictedPlayerState,
+          &cg.savedPmoveStates[ i ] );
+  
+        if( errorcode )
+        {
+          if( cg_showmiss.integer )
+            CG_Printf("errorcode %d at %d\n", errorcode, cg.time);
+          break;
+        }
+  
+        // this one is almost exact, so we'll copy it in as the starting point
+        *cg_pmove.ps = cg.savedPmoveStates[ i ];
+        // advance the head
+        cg.stateHead = ( i + 1 ) % NUM_SAVED_STATES;
+  
+        // set the next command to predict
+        predictCmd = cg.lastPredictedCommand + 1;
+  
+        // a saved state matched, so flag it
+        error = qfalse;
+        break;
+      }
+
+      // if no saved states matched
+      if( error )
+      {
+        // do a full predict
+        cg.lastPredictedCommand = 0;
+        cg.stateTail = cg.stateHead;
+        predictCmd = current - CMD_BACKUP + 1;
+      }
+    }
+
+    // keep track of the server time of the last snapshot so we
+    // know when we're starting from a new one in future calls
+    cg.lastServerTime = cg.physicsTime;
+    stateIndex = cg.stateHead;
+  }
+
+  // run cmds
+  moved = qfalse;
+
+  for( cmdNum = current - CMD_BACKUP + 1; cmdNum <= current; cmdNum++ )
+  {
+    // get the command
+    trap_GetUserCmd( cmdNum, &cg_pmove.cmd );
+
+    if( cg_pmove.pmove_fixed )
+      PM_UpdateViewAngles( cg_pmove.ps, &cg_pmove.cmd );
+
+    // don't do anything if the time is before the snapshot player time
+    if( cg_pmove.cmd.serverTime <= cg.predictedPlayerState.commandTime )
+      continue;
+
+    // don't do anything if the command was from a previous map_restart
+    if( cg_pmove.cmd.serverTime > latestCmd.serverTime )
+      continue;
+
+    // check for a prediction error from last frame
+    // on a lan, this will often be the exact value
+    // from the snapshot, but on a wan we will have
+    // to predict several commands to get to the point
+    // we want to compare
+    if( cg.predictedPlayerState.commandTime == oldPlayerState.commandTime )
+    {
+      vec3_t  delta;
+      float   len;
+
+      if( cg.thisFrameTeleport )
+      {
+        // a teleport will not cause an error decay
+        VectorClear( cg.predictedError );
+
+        if( cg_showmiss.integer )
+          CG_Printf( "PredictionTeleport\n" );
+
+        cg.thisFrameTeleport = qfalse;
+      }
+      else
+      {
+        vec3_t  adjusted;
+        CG_AdjustPositionForMover( cg.predictedPlayerState.origin,
+          cg.predictedPlayerState.groundEntityNum, cg.physicsTime, cg.oldTime, adjusted );
+
+        if( cg_showmiss.integer )
+        {
+          if( !VectorCompare( oldPlayerState.origin, adjusted ) )
+            CG_Printf("prediction error\n");
+        }
+
+        VectorSubtract( oldPlayerState.origin, adjusted, delta );
+        len = VectorLength( delta );
+
+        if( len > 0.1 )
+        {
+          if( cg_showmiss.integer )
+            CG_Printf( "Prediction miss: %f\n", len );
+
+          if( cg_errorDecay.integer )
+          {
+            int   t;
+            float f;
+
+            t = cg.time - cg.predictedErrorTime;
+            f = ( cg_errorDecay.value - t ) / cg_errorDecay.value;
+
+            if( f < 0 )
+              f = 0;
+
+            if( f > 0 && cg_showmiss.integer )
+              CG_Printf( "Double prediction decay: %f\n", f );
+
+            VectorScale( cg.predictedError, f, cg.predictedError );
+          }
+          else
+            VectorClear( cg.predictedError );
+
+          VectorAdd( delta, cg.predictedError, cg.predictedError );
+          cg.predictedErrorTime = cg.oldTime;
+        }
+      }
+    }
+
+    // don't predict gauntlet firing, which is only supposed to happen
+    // when it actually inflicts damage
+    for( i = WP_NONE + 1; i < WP_NUM_WEAPONS; i++ )
+      cg_pmove.autoWeaponHit[ i ] = qfalse;
+
+    if( cg_pmove.pmove_fixed )
+      cg_pmove.cmd.serverTime = ( ( cg_pmove.cmd.serverTime + pmove_msec.integer - 1 ) /
+                                  pmove_msec.integer ) * pmove_msec.integer;
+
+    if( !cg_optimizePrediction.integer )
+    {
+      Pmove( &cg_pmove );
+    }
+    else if( cg_optimizePrediction.integer && ( cmdNum >= predictCmd ||
+      ( stateIndex + 1 ) % NUM_SAVED_STATES == cg.stateHead ) )
+    {
+      Pmove( &cg_pmove );
+      // record the last predicted command
+      cg.lastPredictedCommand = cmdNum;
+
+      // if we haven't run out of space in the saved states queue
+      if( ( stateIndex + 1 ) % NUM_SAVED_STATES != cg.stateHead )
+      {
+        // save the state for the false case ( of cmdNum >= predictCmd )
+        // in later calls to this function
+        cg.savedPmoveStates[ stateIndex ] = *cg_pmove.ps;
+        stateIndex = ( stateIndex + 1 ) % NUM_SAVED_STATES;
+        cg.stateTail = stateIndex;
+      }
+    }
+    else
+    {
+      *cg_pmove.ps = cg.savedPmoveStates[ stateIndex ];
+      stateIndex = ( stateIndex + 1 ) % NUM_SAVED_STATES;
+    }
+
+    moved = qtrue;
+
+    // add push trigger movement effects
+    CG_TouchTriggerPrediction( );
+
+    // check for predictable events that changed from previous predictions
+    //CG_CheckChangedPredictableEvents(&cg.predictedPlayerState);
+  }
+
+  // adjust for the movement of the groundentity
+  CG_AdjustPositionForMover( cg.predictedPlayerState.origin,
+    cg.predictedPlayerState.groundEntityNum,
+    cg.physicsTime, cg.time, cg.predictedPlayerState.origin );
+
+
+  // fire events and other transition triggered things
+  CG_TransitionPlayerState( &cg.predictedPlayerState, &oldPlayerState );
+
+
+}

src/cgame/cg_ptr.c

@@ -0,0 +1,81 @@
+/*
+===========================================================================
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_ptr.c -- post timeout restoration handling
+
+
+#include "cg_local.h"
+
+#define PTRC_FILE  "ptrc.cfg"
+
+/*
+===============
+CG_ReadPTRCode
+
+Read a PTR code from disk
+===============
+*/
+int CG_ReadPTRCode( void )
+{
+  int           len;
+  char          text[ 16 ];
+  fileHandle_t  f;
+
+  // load the file
+  len = trap_FS_FOpenFile( PTRC_FILE, &f, FS_READ );
+  if( len <= 0 )
+    return 0;
+
+  // should never happen - malformed write
+  if( len >= sizeof( text ) - 1 )
+    return 0;
+
+  trap_FS_Read( text, len, f );
+  text[ len ] = 0;
+  trap_FS_FCloseFile( f );
+
+  return atoi( text );
+}
+
+/*
+===============
+CG_WritePTRCode
+
+Write a PTR code to disk
+===============
+*/
+void CG_WritePTRCode( int code )
+{
+  char          text[ 16 ];
+  fileHandle_t  f;
+
+  Com_sprintf( text, 16, "%d", code );
+
+  // open file
+  if( trap_FS_FOpenFile( PTRC_FILE, &f, FS_WRITE ) < 0 )
+    return;
+
+  // write the code
+  trap_FS_Write( text, strlen( text ), f );
+
+  trap_FS_FCloseFile( f );
+}

src/cgame/cg_public.h

@@ -0,0 +1,252 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+
+#define CMD_BACKUP      64
+#define CMD_MASK      (CMD_BACKUP - 1)
+// allow a lot of command backups for very fast systems
+// multiple commands may be combined into a single packet, so this
+// needs to be larger than PACKET_BACKUP
+
+
+#define MAX_ENTITIES_IN_SNAPSHOT  256
+
+// snapshots are a view of the server at a given time
+
+// Snapshots are generated at regular time intervals by the server,
+// but they may not be sent if a client's rate level is exceeded, or
+// they may be dropped by the network.
+typedef struct
+{
+  int           snapFlags;                            // SNAPFLAG_RATE_DELAYED, etc
+  int           ping;
+
+  int           serverTime;                           // server time the message is valid for (in msec)
+
+  byte          areamask[ MAX_MAP_AREA_BYTES ];       // portalarea visibility bits
+
+  playerState_t ps;                                   // complete information about the current player at this time
+
+  int           numEntities;                          // all of the entities that need to be presented
+  entityState_t entities[ MAX_ENTITIES_IN_SNAPSHOT ]; // at the time of this snapshot
+
+  int           numServerCommands;                    // text based server commands to execute when this
+  int           serverCommandSequence;                // snapshot becomes current
+} snapshot_t;
+
+enum
+{
+  CGAME_EVENT_NONE,
+  CGAME_EVENT_TEAMMENU,
+  CGAME_EVENT_SCOREBOARD,
+  CGAME_EVENT_EDITHUD
+};
+
+/*
+==================================================================
+
+functions imported from the main executable
+
+==================================================================
+*/
+
+#define CGAME_IMPORT_API_VERSION  4
+
+typedef enum
+{
+  CG_PRINT,
+  CG_ERROR,
+  CG_MILLISECONDS,
+  CG_CVAR_REGISTER,
+  CG_CVAR_UPDATE,
+  CG_CVAR_SET,
+  CG_CVAR_VARIABLESTRINGBUFFER,
+  CG_ARGC,
+  CG_ARGV,
+  CG_ARGS,
+  CG_FS_FOPENFILE,
+  CG_FS_READ,
+  CG_FS_WRITE,
+  CG_FS_FCLOSEFILE,
+  CG_SENDCONSOLECOMMAND,
+  CG_ADDCOMMAND,
+  CG_SENDCLIENTCOMMAND,
+  CG_UPDATESCREEN,
+  CG_CM_LOADMAP,
+  CG_CM_NUMINLINEMODELS,
+  CG_CM_INLINEMODEL,
+  CG_CM_LOADMODEL,
+  CG_CM_TEMPBOXMODEL,
+  CG_CM_POINTCONTENTS,
+  CG_CM_TRANSFORMEDPOINTCONTENTS,
+  CG_CM_BOXTRACE,
+  CG_CM_TRANSFORMEDBOXTRACE,
+  CG_CM_MARKFRAGMENTS,
+  CG_S_STARTSOUND,
+  CG_S_STARTLOCALSOUND,
+  CG_S_CLEARLOOPINGSOUNDS,
+  CG_S_ADDLOOPINGSOUND,
+  CG_S_UPDATEENTITYPOSITION,
+  CG_S_RESPATIALIZE,
+  CG_S_REGISTERSOUND,
+  CG_S_STARTBACKGROUNDTRACK,
+  CG_R_LOADWORLDMAP,
+  CG_R_REGISTERMODEL,
+  CG_R_REGISTERSKIN,
+  CG_R_REGISTERSHADER,
+  CG_R_CLEARSCENE,
+  CG_R_ADDREFENTITYTOSCENE,
+  CG_R_ADDPOLYTOSCENE,
+  CG_R_ADDLIGHTTOSCENE,
+  CG_R_RENDERSCENE,
+  CG_R_SETCOLOR,
+  CG_R_DRAWSTRETCHPIC,
+  CG_R_MODELBOUNDS,
+  CG_R_LERPTAG,
+  CG_GETGLCONFIG,
+  CG_GETGAMESTATE,
+  CG_GETCURRENTSNAPSHOTNUMBER,
+  CG_GETSNAPSHOT,
+  CG_GETSERVERCOMMAND,
+  CG_GETCURRENTCMDNUMBER,
+  CG_GETUSERCMD,
+  CG_SETUSERCMDVALUE,
+  CG_R_REGISTERSHADERNOMIP,
+  CG_MEMORY_REMAINING,
+  CG_R_REGISTERFONT,
+  CG_KEY_ISDOWN,
+  CG_KEY_GETCATCHER,
+  CG_KEY_SETCATCHER,
+  CG_KEY_GETKEY,
+  CG_S_STOPBACKGROUNDTRACK,
+  CG_REAL_TIME,
+  CG_SNAPVECTOR,
+  CG_REMOVECOMMAND,
+  CG_R_LIGHTFORPOINT,
+  CG_CIN_PLAYCINEMATIC,
+  CG_CIN_STOPCINEMATIC,
+  CG_CIN_RUNCINEMATIC,
+  CG_CIN_DRAWCINEMATIC,
+  CG_CIN_SETEXTENTS,
+  CG_R_REMAP_SHADER,
+  CG_S_ADDREALLOOPINGSOUND,
+  CG_S_STOPLOOPINGSOUND,
+
+  CG_CM_TEMPCAPSULEMODEL,
+  CG_CM_CAPSULETRACE,
+  CG_CM_TRANSFORMEDCAPSULETRACE,
+  CG_R_ADDADDITIVELIGHTTOSCENE,
+  CG_GET_ENTITY_TOKEN,
+  CG_R_ADDPOLYSTOSCENE,
+  CG_R_INPVS,
+  CG_FS_SEEK,
+  CG_FS_GETFILELIST,
+  CG_LITERAL_ARGS,
+  CG_CM_BISPHERETRACE,
+  CG_CM_TRANSFORMEDBISPHERETRACE,
+  CG_GETDEMOSTATE,
+  CG_GETDEMOPOS,
+  CG_GETDEMONAME,
+
+  CG_KEY_KEYNUMTOSTRINGBUF,
+  CG_KEY_GETBINDINGBUF,
+  CG_KEY_SETBINDING,
+
+  CG_PARSE_ADD_GLOBAL_DEFINE,
+  CG_PARSE_LOAD_SOURCE,
+  CG_PARSE_FREE_SOURCE,
+  CG_PARSE_READ_TOKEN,
+  CG_PARSE_SOURCE_FILE_AND_LINE,
+
+  CG_MEMSET = 200,
+  CG_MEMCPY,
+  CG_STRNCPY,
+  CG_SIN,
+  CG_COS,
+  CG_ATAN2,
+  CG_SQRT,
+  CG_FLOOR,
+  CG_CEIL,
+
+  CG_TESTPRINTINT,
+  CG_TESTPRINTFLOAT,
+  CG_ACOS
+} cgameImport_t;
+
+
+/*
+==================================================================
+
+functions exported to the main executable
+
+==================================================================
+*/
+
+typedef enum
+{
+  CG_INIT,
+  // void CG_Init( int serverMessageNum, int serverCommandSequence, int clientNum )
+  // called when the level loads or when the renderer is restarted
+  // all media should be registered at this time
+  // cgame will display loading status by calling SCR_Update, which
+  // will call CG_DrawInformation during the loading process
+  // reliableCommandSequence will be 0 on fresh loads, but higher for
+  // demos, tourney restarts, or vid_restarts
+
+  CG_SHUTDOWN,
+  // void (*CG_Shutdown)( void );
+  // oportunity to flush and close any open files
+
+  CG_CONSOLE_COMMAND,
+  // qboolean (*CG_ConsoleCommand)( void );
+  // a console command has been issued locally that is not recognized by the
+  // main game system.
+  // use Cmd_Argc() / Cmd_Argv() to read the command, return qfalse if the
+  // command is not known to the game
+
+  CG_DRAW_ACTIVE_FRAME,
+  // void (*CG_DrawActiveFrame)( int serverTime, stereoFrame_t stereoView, qboolean demoPlayback );
+  // Generates and draws a game scene and status information at the given time.
+  // If demoPlayback is set, local movement prediction will not be enabled
+
+  CG_CROSSHAIR_PLAYER,
+  // int (*CG_CrosshairPlayer)( void );
+
+  CG_LAST_ATTACKER,
+  // int (*CG_LastAttacker)( void );
+
+  CG_KEY_EVENT,
+  // void  (*CG_KeyEvent)( int key, qboolean down );
+
+  CG_MOUSE_EVENT,
+  // void  (*CG_MouseEvent)( int dx, int dy );
+  CG_EVENT_HANDLING,
+  // void (*CG_EventHandling)(int type);
+
+  CG_CONSOLE_TEXT
+  // void (*CG_ConsoleText)( void );
+  // pass text that has been printed to the console to cgame
+  // use Cmd_Argc() / Cmd_Argv() to read it
+} cgameExport_t;
+
+//----------------------------------------------

src/cgame/cg_scanner.c

@@ -0,0 +1,365 @@
+/*
+===========================================================================
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+
+#include "cg_local.h"
+
+static entityPos_t   entityPositions;
+
+#define HUMAN_SCANNER_UPDATE_PERIOD 700
+
+/*
+=============
+CG_UpdateEntityPositions
+
+Update this client's perception of entity positions
+=============
+*/
+void CG_UpdateEntityPositions( void )
+{
+  centity_t *cent = NULL;
+  int       i;
+
+  if( cg.predictedPlayerState.stats[ STAT_PTEAM ] == PTE_HUMANS )
+  {
+    if( entityPositions.lastUpdateTime + HUMAN_SCANNER_UPDATE_PERIOD > cg.time )
+      return;
+  }
+
+  VectorCopy( cg.refdef.vieworg, entityPositions.origin );
+  VectorCopy( cg.refdefViewAngles, entityPositions.vangles );
+  entityPositions.lastUpdateTime = cg.time;
+
+  entityPositions.numAlienBuildables = 0;
+  entityPositions.numHumanBuildables = 0;
+  entityPositions.numAlienClients = 0;
+  entityPositions.numHumanClients = 0;
+
+  for( i = 0; i < cg.snap->numEntities; i++ )
+  {
+    cent = &cg_entities[ cg.snap->entities[ i ].number ];
+
+    if( cent->currentState.eType == ET_BUILDABLE )
+    {
+      //TA: add to list of item positions (for creep)
+      if( cent->currentState.modelindex2 == BIT_ALIENS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.alienBuildablePos[
+            entityPositions.numAlienBuildables ] );
+        entityPositions.alienBuildableTimes[
+            entityPositions.numAlienBuildables ] = cent->miscTime;
+
+        if( entityPositions.numAlienBuildables < MAX_GENTITIES )
+          entityPositions.numAlienBuildables++;
+      }
+      else if( cent->currentState.modelindex2 == BIT_HUMANS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.humanBuildablePos[
+            entityPositions.numHumanBuildables ] );
+
+        if( entityPositions.numHumanBuildables < MAX_GENTITIES )
+          entityPositions.numHumanBuildables++;
+      }
+    }
+    else if( cent->currentState.eType == ET_PLAYER )
+    {
+      int team = cent->currentState.powerups & 0x00FF;
+
+      if( team == PTE_ALIENS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.alienClientPos[
+            entityPositions.numAlienClients ] );
+
+        if( entityPositions.numAlienClients < MAX_CLIENTS )
+          entityPositions.numAlienClients++;
+      }
+      else if( team == PTE_HUMANS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.humanClientPos[
+            entityPositions.numHumanClients ] );
+
+        if( entityPositions.numHumanClients < MAX_CLIENTS )
+          entityPositions.numHumanClients++;
+      }
+    }
+  }
+}
+
+#define STALKWIDTH  2.0f
+#define BLIPX       16.0f
+#define BLIPY       8.0f
+#define FAR_ALPHA   0.8f
+#define NEAR_ALPHA  1.2f
+
+/*
+=============
+CG_DrawBlips
+
+Draw blips and stalks for the human scanner
+=============
+*/
+static void CG_DrawBlips( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  up = { 0, 0, 1 };
+  float   alphaMod = 1.0f;
+  float   timeFractionSinceRefresh = 1.0f -
+    ( (float)( cg.time - entityPositions.lastUpdateTime ) /
+      (float)HUMAN_SCANNER_UPDATE_PERIOD );
+  vec4_t  localColour;
+
+  Vector4Copy( colour, localColour );
+
+  RotatePointAroundVector( drawOrigin, up, origin, -entityPositions.vangles[ 1 ] - 90 );
+  drawOrigin[ 0 ] /= ( 2 * HELMET_RANGE / rect->w );
+  drawOrigin[ 1 ] /= ( 2 * HELMET_RANGE / rect->h );
+  drawOrigin[ 2 ] /= ( 2 * HELMET_RANGE / rect->w );
+
+  alphaMod = FAR_ALPHA +
+    ( ( drawOrigin[ 1 ] + ( rect->h / 2.0f ) ) / rect->h ) * ( NEAR_ALPHA - FAR_ALPHA );
+
+  localColour[ 3 ] *= alphaMod;
+  localColour[ 3 ] *= ( 0.5f + ( timeFractionSinceRefresh * 0.5f ) );
+
+  if( localColour[ 3 ] > 1.0f )
+    localColour[ 3 ] = 1.0f;
+  else if( localColour[ 3 ] < 0.0f )
+    localColour[ 3 ] = 0.0f;
+
+  trap_R_SetColor( localColour );
+
+  if( drawOrigin[ 2 ] > 0 )
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+                STALKWIDTH, drawOrigin[ 2 ], cgs.media.scannerLineShader );
+  else
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ],
+                STALKWIDTH, -drawOrigin[ 2 ], cgs.media.scannerLineShader );
+
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX / 2 ) - drawOrigin[ 0 ],
+              rect->y + ( rect->h / 2 ) - ( BLIPY / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+              BLIPX, BLIPY, cgs.media.scannerBlipShader );
+  trap_R_SetColor( NULL );
+}
+
+#define BLIPX2  24.0f
+#define BLIPY2  24.0f
+
+/*
+=============
+CG_DrawDir
+
+Draw dot marking the direction to an enemy
+=============
+*/
+static void CG_DrawDir( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  noZOrigin;
+  vec3_t  normal, antinormal, normalDiff;
+  vec3_t  view, noZview;
+  vec3_t  up  = { 0.0f, 0.0f,   1.0f };
+  vec3_t  top = { 0.0f, -1.0f,  0.0f };
+  float   angle;
+  playerState_t *ps = &cg.snap->ps;
+
+  if( ps->stats[ STAT_STATE ] & SS_WALLCLIMBING )
+  {
+    if( ps->stats[ STAT_STATE ] & SS_WALLCLIMBINGCEILING )
+      VectorSet( normal, 0.0f, 0.0f, -1.0f );
+    else
+      VectorCopy( ps->grapplePoint, normal );
+  }
+  else
+    VectorSet( normal, 0.0f, 0.0f, 1.0f );
+
+  AngleVectors( entityPositions.vangles, view, NULL, NULL );
+
+  ProjectPointOnPlane( noZOrigin, origin, normal );
+  ProjectPointOnPlane( noZview, view, normal );
+  VectorNormalize( noZOrigin );
+  VectorNormalize( noZview );
+
+  //calculate the angle between the images of the blip and the view
+  angle = RAD2DEG( acos( DotProduct( noZOrigin, noZview ) ) );
+  CrossProduct( noZOrigin, noZview, antinormal );
+  VectorNormalize( antinormal );
+
+  //decide which way to rotate
+  VectorSubtract( normal, antinormal, normalDiff );
+  if( VectorLength( normalDiff ) < 1.0f )
+    angle = 360.0f - angle;
+
+  RotatePointAroundVector( drawOrigin, up, top, angle );
+
+  trap_R_SetColor( colour );
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX2 / 2 ) - drawOrigin[ 0 ] * ( rect->w / 2 ),
+              rect->y + ( rect->h / 2 ) - ( BLIPY2 / 2 ) + drawOrigin[ 1 ] * ( rect->h / 2 ),
+              BLIPX2, BLIPY2, cgs.media.scannerBlipShader );
+  trap_R_SetColor( NULL );
+}
+
+/*
+=============
+CG_AlienSense
+=============
+*/
+void CG_AlienSense( rectDef_t *rect )
+{
+  int     i;
+  vec3_t  origin;
+  vec3_t  relOrigin;
+  vec4_t  buildable = { 1.0f, 0.0f, 0.0f, 0.7f };
+  vec4_t  client    = { 0.0f, 0.0f, 1.0f, 0.7f };
+
+  VectorCopy( entityPositions.origin, origin );
+
+  //draw human buildables
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < ALIENSENSE_RANGE )
+      CG_DrawDir( rect, relOrigin, buildable );
+  }
+
+  //draw human clients
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < ALIENSENSE_RANGE )
+      CG_DrawDir( rect, relOrigin, client );
+  }
+}
+
+/*
+=============
+CG_Scanner
+=============
+*/
+void CG_Scanner( rectDef_t *rect, qhandle_t shader, vec4_t color )
+{
+  int     i;
+  vec3_t  origin;
+  vec3_t  relOrigin;
+  vec4_t  hIabove;
+  vec4_t  hIbelow;
+  vec4_t  aIabove = { 1.0f, 0.0f, 0.0f, 0.75f };
+  vec4_t  aIbelow = { 1.0f, 0.0f, 0.0f, 0.5f };
+
+  Vector4Copy( color, hIabove );
+  hIabove[ 3 ] *= 1.5f;
+  Vector4Copy( color, hIbelow );
+
+  VectorCopy( entityPositions.origin, origin );
+
+  //draw human buildables below scanner plane
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIbelow );
+  }
+
+  //draw alien buildables below scanner plane
+  for( i = 0; i < entityPositions.numAlienBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIbelow );
+  }
+
+  //draw human clients below scanner plane
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIbelow );
+  }
+
+  //draw alien buildables below scanner plane
+  for( i = 0; i < entityPositions.numAlienClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIbelow );
+  }
+
+  if( !cg_disableScannerPlane.integer )
+  {
+    trap_R_SetColor( color );
+    CG_DrawPic( rect->x, rect->y, rect->w, rect->h, shader );
+    trap_R_SetColor( NULL );
+  }
+
+  //draw human buildables above scanner plane
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIabove );
+  }
+
+  //draw alien buildables above scanner plane
+  for( i = 0; i < entityPositions.numAlienBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIabove );
+  }
+
+  //draw human clients above scanner plane
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIabove );
+  }
+
+  //draw alien clients above scanner plane
+  for( i = 0; i < entityPositions.numAlienClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIabove );
+  }
+}

src/cgame/cg_snapshot.c

@@ -0,0 +1,411 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_snapshot.c -- things that happen on snapshot transition,
+// not necessarily every single rendered frame
+
+
+#include "cg_local.h"
+
+/*
+==================
+CG_ResetEntity
+==================
+*/
+static void CG_ResetEntity( centity_t *cent )
+{
+  // if the previous snapshot this entity was updated in is at least
+  // an event window back in time then we can reset the previous event
+  if( cent->snapShotTime < cg.time - EVENT_VALID_MSEC )
+    cent->previousEvent = 0;
+
+  cent->trailTime = cg.snap->serverTime;
+
+  VectorCopy( cent->currentState.origin, cent->lerpOrigin );
+  VectorCopy( cent->currentState.angles, cent->lerpAngles );
+
+  if( cent->currentState.eType == ET_PLAYER )
+    CG_ResetPlayerEntity( cent );
+}
+
+/*
+===============
+CG_TransitionEntity
+
+cent->nextState is moved to cent->currentState and events are fired
+===============
+*/
+static void CG_TransitionEntity( centity_t *cent )
+{
+  cent->currentState = cent->nextState;
+  cent->currentValid = qtrue;
+
+  // reset if the entity wasn't in the last frame or was teleported
+  if( !cent->interpolate )
+    CG_ResetEntity( cent );
+
+  // clear the next state.  if will be set by the next CG_SetNextSnap
+  cent->interpolate = qfalse;
+
+  // check for events
+  CG_CheckEvents( cent );
+}
+
+
+/*
+==================
+CG_SetInitialSnapshot
+
+This will only happen on the very first snapshot, or
+on tourney restarts.  All other times will use
+CG_TransitionSnapshot instead.
+
+FIXME: Also called by map_restart?
+==================
+*/
+void CG_SetInitialSnapshot( snapshot_t *snap )
+{
+  int           i;
+  centity_t     *cent;
+  entityState_t *state;
+
+  cg.snap = snap;
+
+  BG_PlayerStateToEntityState( &snap->ps, &cg_entities[ snap->ps.clientNum ].currentState, qfalse );
+
+  // sort out solid entities
+  CG_BuildSolidList( );
+
+  CG_ExecuteNewServerCommands( snap->serverCommandSequence );
+
+  // set our local weapon selection pointer to
+  // what the server has indicated the current weapon is
+  CG_Respawn( );
+
+  for( i = 0; i < cg.snap->numEntities; i++ )
+  {
+    state = &cg.snap->entities[ i ];
+    cent = &cg_entities[ state->number ];
+
+    memcpy( &cent->currentState, state, sizeof( entityState_t ) );
+    //cent->currentState = *state;
+    cent->interpolate = qfalse;
+    cent->currentValid = qtrue;
+
+    CG_ResetEntity( cent );
+
+    // check for events
+    CG_CheckEvents( cent );
+  }
+}
+
+
+/*
+===================
+CG_TransitionSnapshot
+
+The transition point from snap to nextSnap has passed
+===================
+*/
+static void CG_TransitionSnapshot( void )
+{
+  centity_t   *cent;
+  snapshot_t  *oldFrame;
+  int         i;
+
+  if( !cg.snap )
+    CG_Error( "CG_TransitionSnapshot: NULL cg.snap" );
+
+  if( !cg.nextSnap )
+    CG_Error( "CG_TransitionSnapshot: NULL cg.nextSnap" );
+
+  // execute any server string commands before transitioning entities
+  CG_ExecuteNewServerCommands( cg.nextSnap->serverCommandSequence );
+
+  // if we had a map_restart, set everthing with initial
+  if( !cg.snap ) { } //TA: ?
+
+  // clear the currentValid flag for all entities in the existing snapshot
+  for( i = 0; i < cg.snap->numEntities; i++ )
+  {
+    cent = &cg_entities[ cg.snap->entities[ i ].number ];
+    cent->currentValid = qfalse;
+  }
+
+  // move nextSnap to snap and do the transitions
+  oldFrame = cg.snap;
+  cg.snap = cg.nextSnap;
+
+  BG_PlayerStateToEntityState( &cg.snap->ps, &cg_entities[ cg.snap->ps.clientNum ].currentState, qfalse );
+  cg_entities[ cg.snap->ps.clientNum ].interpolate = qfalse;
+
+  for( i = 0; i < cg.snap->numEntities; i++ )
+  {
+    cent = &cg_entities[ cg.snap->entities[ i ].number ];
+    CG_TransitionEntity( cent );
+
+    // remember time of snapshot this entity was last updated in
+    cent->snapShotTime = cg.snap->serverTime;
+  }
+
+  cg.nextSnap = NULL;
+
+  // check for playerstate transition events
+  if( oldFrame )
+  {
+    playerState_t *ops, *ps;
+
+    ops = &oldFrame->ps;
+    ps = &cg.snap->ps;
+    // teleporting checks are irrespective of prediction
+    if( ( ps->eFlags ^ ops->eFlags ) & EF_TELEPORT_BIT )
+      cg.thisFrameTeleport = qtrue; // will be cleared by prediction code
+
+    // if we are not doing client side movement prediction for any
+    // reason, then the client events and view changes will be issued now
+    if( cg.demoPlayback || ( cg.snap->ps.pm_flags & PMF_FOLLOW ) ||
+        cg_nopredict.integer || cg_synchronousClients.integer )
+      CG_TransitionPlayerState( ps, ops );
+  }
+}
+
+
+/*
+===================
+CG_SetNextSnap
+
+A new snapshot has just been read in from the client system.
+===================
+*/
+static void CG_SetNextSnap( snapshot_t *snap )
+{
+  int           num;
+  entityState_t *es;
+  centity_t     *cent;
+
+  cg.nextSnap = snap;
+
+  BG_PlayerStateToEntityState( &snap->ps, &cg_entities[ snap->ps.clientNum ].nextState, qfalse );
+  cg_entities[ cg.snap->ps.clientNum ].interpolate = qtrue;
+
+  // check for extrapolation errors
+  for( num = 0 ; num < snap->numEntities ; num++ )
+  {
+    es = &snap->entities[ num ];
+    cent = &cg_entities[ es->number ];
+
+    memcpy( &cent->nextState, es, sizeof( entityState_t ) );
+    //cent->nextState = *es;
+
+    // if this frame is a teleport, or the entity wasn't in the
+    // previous frame, don't interpolate
+    if( !cent->currentValid || ( ( cent->currentState.eFlags ^ es->eFlags ) & EF_TELEPORT_BIT ) )
+      cent->interpolate = qfalse;
+    else
+      cent->interpolate = qtrue;
+  }
+
+  // if the next frame is a teleport for the playerstate, we
+  // can't interpolate during demos
+  if( cg.snap && ( ( snap->ps.eFlags ^ cg.snap->ps.eFlags ) & EF_TELEPORT_BIT ) )
+    cg.nextFrameTeleport = qtrue;
+  else
+    cg.nextFrameTeleport = qfalse;
+
+  // if changing follow mode, don't interpolate
+  if( cg.nextSnap->ps.clientNum != cg.snap->ps.clientNum )
+    cg.nextFrameTeleport = qtrue;
+
+  // if changing server restarts, don't interpolate
+  if( ( cg.nextSnap->snapFlags ^ cg.snap->snapFlags ) & SNAPFLAG_SERVERCOUNT )
+    cg.nextFrameTeleport = qtrue;
+
+  // sort out solid entities
+  CG_BuildSolidList( );
+}
+
+
+/*
+========================
+CG_ReadNextSnapshot
+
+This is the only place new snapshots are requested
+This may increment cgs.processedSnapshotNum multiple
+times if the client system fails to return a
+valid snapshot.
+========================
+*/
+static snapshot_t *CG_ReadNextSnapshot( void )
+{
+  qboolean    r;
+  snapshot_t  *dest;
+
+  if( cg.latestSnapshotNum > cgs.processedSnapshotNum + 1000 )
+  {
+    CG_Printf( "WARNING: CG_ReadNextSnapshot: way out of range, %i > %i",
+      cg.latestSnapshotNum, cgs.processedSnapshotNum );
+  }
+
+  while( cgs.processedSnapshotNum < cg.latestSnapshotNum )
+  {
+    // decide which of the two slots to load it into
+    if( cg.snap == &cg.activeSnapshots[ 0 ] )
+      dest = &cg.activeSnapshots[ 1 ];
+    else
+      dest = &cg.activeSnapshots[ 0 ];
+
+    // try to read the snapshot from the client system
+    cgs.processedSnapshotNum++;
+    r = trap_GetSnapshot( cgs.processedSnapshotNum, dest );
+
+    // FIXME: why would trap_GetSnapshot return a snapshot with the same server time
+    if( cg.snap && r && dest->serverTime == cg.snap->serverTime )
+    {
+      //continue;
+    }
+
+    // if it succeeded, return
+    if( r )
+    {
+      CG_AddLagometerSnapshotInfo( dest );
+      return dest;
+    }
+
+    // a GetSnapshot will return failure if the snapshot
+    // never arrived, or  is so old that its entities
+    // have been shoved off the end of the circular
+    // buffer in the client system.
+
+    // record as a dropped packet
+    CG_AddLagometerSnapshotInfo( NULL );
+
+    // If there are additional snapshots, continue trying to
+    // read them.
+  }
+
+  // nothing left to read
+  return NULL;
+}
+
+
+/*
+============
+CG_ProcessSnapshots
+
+We are trying to set up a renderable view, so determine
+what the simulated time is, and try to get snapshots
+both before and after that time if available.
+
+If we don't have a valid cg.snap after exiting this function,
+then a 3D game view cannot be rendered.  This should only happen
+right after the initial connection.  After cg.snap has been valid
+once, it will never turn invalid.
+
+Even if cg.snap is valid, cg.nextSnap may not be, if the snapshot
+hasn't arrived yet (it becomes an extrapolating situation instead
+of an interpolating one)
+
+============
+*/
+void CG_ProcessSnapshots( void )
+{
+  snapshot_t  *snap;
+  int         n;
+
+  // see what the latest snapshot the client system has is
+  trap_GetCurrentSnapshotNumber( &n, &cg.latestSnapshotTime );
+
+  if( n != cg.latestSnapshotNum )
+  {
+    if( n < cg.latestSnapshotNum )
+    {
+      // this should never happen
+      CG_Error( "CG_ProcessSnapshots: n < cg.latestSnapshotNum" );
+    }
+
+    cg.latestSnapshotNum = n;
+  }
+
+  // If we have yet to receive a snapshot, check for it.
+  // Once we have gotten the first snapshot, cg.snap will
+  // always have valid data for the rest of the game
+  while( !cg.snap )
+  {
+    snap = CG_ReadNextSnapshot( );
+
+    if( !snap )
+    {
+      // we can't continue until we get a snapshot
+      return;
+    }
+
+    // set our weapon selection to what
+    // the playerstate is currently using
+    if( !( snap->snapFlags & SNAPFLAG_NOT_ACTIVE ) )
+      CG_SetInitialSnapshot( snap );
+  }
+
+  // loop until we either have a valid nextSnap with a serverTime
+  // greater than cg.time to interpolate towards, or we run
+  // out of available snapshots
+  do
+  {
+    // if we don't have a nextframe, try and read a new one in
+    if( !cg.nextSnap )
+    {
+      snap = CG_ReadNextSnapshot( );
+
+      // if we still don't have a nextframe, we will just have to
+      // extrapolate
+      if( !snap )
+        break;
+
+      CG_SetNextSnap( snap );
+
+      // if time went backwards, we have a level restart
+      if( cg.nextSnap->serverTime < cg.snap->serverTime )
+        CG_Error( "CG_ProcessSnapshots: Server time went backwards" );
+    }
+
+    // if our time is < nextFrame's, we have a nice interpolating state
+    if( cg.time >= cg.snap->serverTime && cg.time < cg.nextSnap->serverTime )
+      break;
+
+    // we have passed the transition from nextFrame to frame
+    CG_TransitionSnapshot( );
+  } while( 1 );
+
+  // assert our valid conditions upon exiting
+  if( cg.snap == NULL )
+    CG_Error( "CG_ProcessSnapshots: cg.snap == NULL" );
+
+  if( cg.time < cg.snap->serverTime )
+  {
+    // this can happen right after a vid_restart
+    cg.time = cg.snap->serverTime;
+  }
+
+  if( cg.nextSnap != NULL && cg.nextSnap->serverTime <= cg.time )
+    CG_Error( "CG_ProcessSnapshots: cg.nextSnap->serverTime <= cg.time" );
+}
+

src/cgame/cg_syscalls.asm

@@ -0,0 +1,116 @@
+code
+
+equ trap_Print                        -1
+equ trap_Error                        -2
+equ trap_Milliseconds                 -3
+equ trap_Cvar_Register                -4
+equ trap_Cvar_Update                  -5
+equ trap_Cvar_Set                     -6
+equ trap_Cvar_VariableStringBuffer    -7
+equ trap_Argc                         -8
+equ trap_Argv                         -9
+equ trap_Args                         -10
+equ trap_FS_FOpenFile                 -11
+equ trap_FS_Read                      -12
+equ trap_FS_Write                     -13 
+equ trap_FS_FCloseFile                -14
+equ trap_SendConsoleCommand           -15
+equ trap_AddCommand                   -16
+equ trap_SendClientCommand            -17
+equ trap_UpdateScreen                 -18
+equ trap_CM_LoadMap                   -19
+equ trap_CM_NumInlineModels           -20
+equ trap_CM_InlineModel               -21
+equ trap_CM_LoadModel                 -22
+equ trap_CM_TempBoxModel              -23
+equ trap_CM_PointContents             -24
+equ trap_CM_TransformedPointContents  -25
+equ trap_CM_BoxTrace                  -26
+equ trap_CM_TransformedBoxTrace       -27
+equ trap_CM_MarkFragments             -28
+equ trap_S_StartSound                 -29
+equ trap_S_StartLocalSound            -30
+equ trap_S_ClearLoopingSounds         -31
+equ trap_S_AddLoopingSound            -32
+equ trap_S_UpdateEntityPosition       -33
+equ trap_S_Respatialize               -34
+equ trap_S_RegisterSound              -35
+equ trap_S_StartBackgroundTrack       -36
+equ trap_R_LoadWorldMap               -37
+equ trap_R_RegisterModel              -38
+equ trap_R_RegisterSkin               -39
+equ trap_R_RegisterShader             -40
+equ trap_R_ClearScene                 -41
+equ trap_R_AddRefEntityToScene        -42
+equ trap_R_AddPolyToScene             -43
+equ trap_R_AddLightToScene            -44
+equ trap_R_RenderScene                -45
+equ trap_R_SetColor                   -46
+equ trap_R_DrawStretchPic             -47
+equ trap_R_ModelBounds                -48
+equ trap_R_LerpTag                    -49
+equ trap_GetGlconfig                  -50
+equ trap_GetGameState                 -51
+equ trap_GetCurrentSnapshotNumber     -52
+equ trap_GetSnapshot                  -53
+equ trap_GetServerCommand             -54
+equ trap_GetCurrentCmdNumber          -55
+equ trap_GetUserCmd                   -56
+equ trap_SetUserCmdValue              -57
+equ trap_R_RegisterShaderNoMip        -58
+equ trap_MemoryRemaining              -59
+equ trap_R_RegisterFont               -60
+equ trap_Key_IsDown                   -61
+equ trap_Key_GetCatcher               -62
+equ trap_Key_SetCatcher               -63
+equ trap_Key_GetKey                   -64
+equ trap_S_StopBackgroundTrack        -65
+equ trap_RealTime                     -66
+equ trap_SnapVector                   -67
+equ trap_RemoveCommand                -68
+equ trap_R_LightForPoint              -69
+equ trap_CIN_PlayCinematic            -70
+equ trap_CIN_StopCinematic            -71
+equ trap_CIN_RunCinematic             -72
+equ trap_CIN_DrawCinematic            -73
+equ trap_CIN_SetExtents               -74
+equ trap_R_RemapShader                -75
+equ trap_S_AddRealLoopingSound        -76
+equ trap_S_StopLoopingSound           -77
+equ trap_CM_TempCapsuleModel          -78
+equ trap_CM_CapsuleTrace              -79
+equ trap_CM_TransformedCapsuleTrace   -80
+equ trap_R_AddAdditiveLightToScene    -81
+equ trap_GetEntityToken               -82
+equ trap_R_AddPolysToScene            -83
+equ trap_R_inPVS                      -84
+equ trap_FS_Seek                      -85
+equ trap_FS_GetFileList               -86
+equ trap_LiteralArgs                  -87
+equ trap_CM_BiSphereTrace             -88
+equ trap_CM_TransformedBiSphereTrace  -89
+equ trap_GetDemoState                 -90
+equ trap_GetDemoPos                   -91
+equ trap_GetDemoName                  -92
+equ trap_Key_KeynumToStringBuf        -93
+equ trap_Key_GetBindingBuf            -94
+equ trap_Key_SetBinding               -95
+
+equ trap_Parse_AddGlobalDefine        -96
+equ trap_Parse_LoadSource             -97
+equ trap_Parse_FreeSource             -98
+equ trap_Parse_ReadToken              -99
+equ trap_Parse_SourceFileAndLine      -100
+
+equ memset                            -201
+equ memcpy                            -202
+equ strncpy                           -203
+equ sin                               -204
+equ cos                               -205
+equ atan2                             -206
+equ sqrt                              -207
+equ floor                             -208
+equ ceil                              -209
+equ testPrintInt                      -210
+equ testPrintFloat                    -211
+

src/cgame/cg_syscalls.c

@@ -0,0 +1,570 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_syscalls.c -- this file is only included when building a dll
+// cg_syscalls.asm is included instead when building a qvm
+
+
+#include "cg_local.h"
+
+static intptr_t (QDECL *syscall)( intptr_t arg, ... ) = (intptr_t (QDECL *)( intptr_t, ...))-1;
+
+
+void dllEntry( intptr_t (QDECL  *syscallptr)( intptr_t arg,... ) )
+{
+  syscall = syscallptr;
+}
+
+
+int PASSFLOAT( float x )
+{
+  float floatTemp;
+  floatTemp = x;
+  return *(int *)&floatTemp;
+}
+
+void trap_Print( const char *fmt )
+{
+  syscall( CG_PRINT, fmt );
+}
+
+void trap_Error( const char *fmt )
+{
+  syscall( CG_ERROR, fmt );
+}
+
+int trap_Milliseconds( void )
+{
+  return syscall( CG_MILLISECONDS );
+}
+
+void trap_Cvar_Register( vmCvar_t *vmCvar, const char *varName, const char *defaultValue, int flags )
+{
+  syscall( CG_CVAR_REGISTER, vmCvar, varName, defaultValue, flags );
+}
+
+void trap_Cvar_Update( vmCvar_t *vmCvar )
+{
+  syscall( CG_CVAR_UPDATE, vmCvar );
+}
+
+void trap_Cvar_Set( const char *var_name, const char *value )
+{
+  syscall( CG_CVAR_SET, var_name, value );
+}
+
+void trap_Cvar_VariableStringBuffer( const char *var_name, char *buffer, int bufsize )
+{
+  syscall( CG_CVAR_VARIABLESTRINGBUFFER, var_name, buffer, bufsize );
+}
+
+int trap_Argc( void )
+{
+  return syscall( CG_ARGC );
+}
+
+void  trap_Argv( int n, char *buffer, int bufferLength )
+{
+  syscall( CG_ARGV, n, buffer, bufferLength );
+}
+
+void  trap_Args( char *buffer, int bufferLength )
+{
+  syscall( CG_ARGS, buffer, bufferLength );
+}
+
+void  trap_LiteralArgs( char *buffer, int bufferLength )
+{
+  syscall( CG_LITERAL_ARGS, buffer, bufferLength );
+}
+
+int trap_FS_FOpenFile( const char *qpath, fileHandle_t *f, fsMode_t mode )
+{
+  return syscall( CG_FS_FOPENFILE, qpath, f, mode );
+}
+
+void  trap_FS_Read( void *buffer, int len, fileHandle_t f )
+{
+  syscall( CG_FS_READ, buffer, len, f );
+}
+
+void trap_FS_Write( const void *buffer, int len, fileHandle_t f )
+{
+  syscall( CG_FS_WRITE, buffer, len, f );
+}
+
+void  trap_FS_FCloseFile( fileHandle_t f )
+{
+  syscall( CG_FS_FCLOSEFILE, f );
+}
+
+void trap_FS_Seek( fileHandle_t f, long offset, fsOrigin_t origin )
+{
+  syscall( CG_FS_SEEK, f, offset, origin );
+}
+
+int trap_FS_GetFileList( const char *path, const char *extension, char *listbuf, int bufsize )
+{
+  return syscall( CG_FS_GETFILELIST, path, extension, listbuf, bufsize );
+}
+
+void  trap_SendConsoleCommand( const char *text )
+{
+  syscall( CG_SENDCONSOLECOMMAND, text );
+}
+
+void  trap_AddCommand( const char *cmdName )
+{
+  syscall( CG_ADDCOMMAND, cmdName );
+}
+
+void  trap_RemoveCommand( const char *cmdName )
+{
+    syscall( CG_REMOVECOMMAND, cmdName );
+}
+
+void  trap_SendClientCommand( const char *s )
+{
+  syscall( CG_SENDCLIENTCOMMAND, s );
+}
+
+void  trap_UpdateScreen( void )
+{
+  syscall( CG_UPDATESCREEN );
+}
+
+void  trap_CM_LoadMap( const char *mapname )
+{
+  syscall( CG_CM_LOADMAP, mapname );
+}
+
+int   trap_CM_NumInlineModels( void )
+{
+  return syscall( CG_CM_NUMINLINEMODELS );
+}
+
+clipHandle_t trap_CM_InlineModel( int index )
+{
+  return syscall( CG_CM_INLINEMODEL, index );
+}
+
+clipHandle_t trap_CM_TempBoxModel( const vec3_t mins, const vec3_t maxs )
+{
+  return syscall( CG_CM_TEMPBOXMODEL, mins, maxs );
+}
+
+clipHandle_t trap_CM_TempCapsuleModel( const vec3_t mins, const vec3_t maxs )
+{
+  return syscall( CG_CM_TEMPCAPSULEMODEL, mins, maxs );
+}
+
+int   trap_CM_PointContents( const vec3_t p, clipHandle_t model )
+{
+  return syscall( CG_CM_POINTCONTENTS, p, model );
+}
+
+int   trap_CM_TransformedPointContents( const vec3_t p, clipHandle_t model, const vec3_t origin,
+                                        const vec3_t angles )
+{
+  return syscall( CG_CM_TRANSFORMEDPOINTCONTENTS, p, model, origin, angles );
+}
+
+void  trap_CM_BoxTrace( trace_t *results, const vec3_t start, const vec3_t end,
+              const vec3_t mins, const vec3_t maxs,
+              clipHandle_t model, int brushmask )
+{
+  syscall( CG_CM_BOXTRACE, results, start, end, mins, maxs, model, brushmask );
+}
+
+void  trap_CM_CapsuleTrace( trace_t *results, const vec3_t start, const vec3_t end,
+              const vec3_t mins, const vec3_t maxs,
+              clipHandle_t model, int brushmask )
+{
+  syscall( CG_CM_CAPSULETRACE, results, start, end, mins, maxs, model, brushmask );
+}
+
+void  trap_CM_TransformedBoxTrace( trace_t *results, const vec3_t start, const vec3_t end,
+              const vec3_t mins, const vec3_t maxs,
+              clipHandle_t model, int brushmask,
+              const vec3_t origin, const vec3_t angles )
+{
+  syscall( CG_CM_TRANSFORMEDBOXTRACE, results, start, end, mins, maxs, model, brushmask, origin, angles );
+}
+
+void  trap_CM_TransformedCapsuleTrace( trace_t *results, const vec3_t start, const vec3_t end,
+              const vec3_t mins, const vec3_t maxs,
+              clipHandle_t model, int brushmask,
+              const vec3_t origin, const vec3_t angles )
+{
+  syscall( CG_CM_TRANSFORMEDCAPSULETRACE, results, start, end, mins, maxs, model, brushmask, origin, angles );
+}
+
+void trap_CM_BiSphereTrace( trace_t *results, const vec3_t start,
+             const vec3_t end, float startRad, float endRad,
+             clipHandle_t model, int mask )
+{
+  syscall( CG_CM_BISPHERETRACE, results, start, end,
+      PASSFLOAT( startRad ), PASSFLOAT( endRad ), model, mask );
+}
+
+void trap_CM_TransformedBiSphereTrace( trace_t *results, const vec3_t start,
+             const vec3_t end, float startRad, float endRad,
+             clipHandle_t model, int mask,
+             const vec3_t origin )
+{
+  syscall( CG_CM_TRANSFORMEDBISPHERETRACE, results, start, end, PASSFLOAT( startRad ),
+      PASSFLOAT( endRad ), model, mask, origin );
+}
+
+int   trap_CM_MarkFragments( int numPoints, const vec3_t *points,
+        const vec3_t projection,
+        int maxPoints, vec3_t pointBuffer,
+        int maxFragments, markFragment_t *fragmentBuffer )
+{
+  return syscall( CG_CM_MARKFRAGMENTS, numPoints, points, projection, maxPoints,
+                  pointBuffer, maxFragments, fragmentBuffer );
+}
+
+void  trap_S_StartSound( vec3_t origin, int entityNum, int entchannel, sfxHandle_t sfx )
+{
+  syscall( CG_S_STARTSOUND, origin, entityNum, entchannel, sfx );
+}
+
+void  trap_S_StartLocalSound( sfxHandle_t sfx, int channelNum )
+{
+  syscall( CG_S_STARTLOCALSOUND, sfx, channelNum );
+}
+
+void  trap_S_ClearLoopingSounds( qboolean killall )
+{
+  syscall( CG_S_CLEARLOOPINGSOUNDS, killall );
+}
+
+void  trap_S_AddLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx )
+{
+  syscall( CG_S_ADDLOOPINGSOUND, entityNum, origin, velocity, sfx );
+}
+
+void  trap_S_AddRealLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx )
+{
+  syscall( CG_S_ADDREALLOOPINGSOUND, entityNum, origin, velocity, sfx );
+}
+
+void  trap_S_StopLoopingSound( int entityNum )
+{
+  syscall( CG_S_STOPLOOPINGSOUND, entityNum );
+}
+
+void  trap_S_UpdateEntityPosition( int entityNum, const vec3_t origin )
+{
+  syscall( CG_S_UPDATEENTITYPOSITION, entityNum, origin );
+}
+
+void  trap_S_Respatialize( int entityNum, const vec3_t origin, vec3_t axis[3], int inwater )
+{
+  syscall( CG_S_RESPATIALIZE, entityNum, origin, axis, inwater );
+}
+
+sfxHandle_t trap_S_RegisterSound( const char *sample, qboolean compressed )
+{
+  return syscall( CG_S_REGISTERSOUND, sample, compressed );
+}
+
+void  trap_S_StartBackgroundTrack( const char *intro, const char *loop )
+{
+  syscall( CG_S_STARTBACKGROUNDTRACK, intro, loop );
+}
+
+void  trap_R_LoadWorldMap( const char *mapname )
+{
+  syscall( CG_R_LOADWORLDMAP, mapname );
+}
+
+qhandle_t trap_R_RegisterModel( const char *name )
+{
+  return syscall( CG_R_REGISTERMODEL, name );
+}
+
+qhandle_t trap_R_RegisterSkin( const char *name )
+{
+  return syscall( CG_R_REGISTERSKIN, name );
+}
+
+qhandle_t trap_R_RegisterShader( const char *name )
+{
+  return syscall( CG_R_REGISTERSHADER, name );
+}
+
+qhandle_t trap_R_RegisterShaderNoMip( const char *name )
+{
+  return syscall( CG_R_REGISTERSHADERNOMIP, name );
+}
+
+void trap_R_RegisterFont( const char *fontName, int pointSize, fontInfo_t *font )
+{
+  syscall(CG_R_REGISTERFONT, fontName, pointSize, font );
+}
+
+void  trap_R_ClearScene( void )
+{
+  syscall( CG_R_CLEARSCENE );
+}
+
+void  trap_R_AddRefEntityToScene( const refEntity_t *re )
+{
+  syscall( CG_R_ADDREFENTITYTOSCENE, re );
+}
+
+void trap_R_AddPolyToScene( qhandle_t hShader , int numVerts, const polyVert_t *verts )
+{
+  syscall( CG_R_ADDPOLYTOSCENE, hShader, numVerts, verts );
+}
+
+void trap_R_AddPolysToScene( qhandle_t hShader , int numVerts, const polyVert_t *verts, int num )
+{
+  syscall( CG_R_ADDPOLYSTOSCENE, hShader, numVerts, verts, num );
+}
+
+int trap_R_LightForPoint( vec3_t point, vec3_t ambientLight, vec3_t directedLight, vec3_t lightDir )
+{
+  return syscall( CG_R_LIGHTFORPOINT, point, ambientLight, directedLight, lightDir );
+}
+
+void  trap_R_AddLightToScene( const vec3_t org, float intensity, float r, float g, float b )
+{
+  syscall( CG_R_ADDLIGHTTOSCENE, org, PASSFLOAT(intensity), PASSFLOAT(r), PASSFLOAT(g), PASSFLOAT(b) );
+}
+
+void  trap_R_AddAdditiveLightToScene( const vec3_t org, float intensity, float r, float g, float b )
+{
+  syscall( CG_R_ADDADDITIVELIGHTTOSCENE, org, PASSFLOAT(intensity), PASSFLOAT(r), PASSFLOAT(g), PASSFLOAT(b) );
+}
+
+void  trap_R_RenderScene( const refdef_t *fd )
+{
+  syscall( CG_R_RENDERSCENE, fd );
+}
+
+void  trap_R_SetColor( const float *rgba )
+{
+  syscall( CG_R_SETCOLOR, rgba );
+}
+
+void  trap_R_DrawStretchPic( float x, float y, float w, float h,
+                 float s1, float t1, float s2, float t2, qhandle_t hShader )
+{
+  syscall( CG_R_DRAWSTRETCHPIC, PASSFLOAT(x), PASSFLOAT(y), PASSFLOAT(w), PASSFLOAT(h),
+           PASSFLOAT(s1), PASSFLOAT(t1), PASSFLOAT(s2), PASSFLOAT(t2), hShader );
+}
+
+void  trap_R_ModelBounds( clipHandle_t model, vec3_t mins, vec3_t maxs ) {
+  syscall( CG_R_MODELBOUNDS, model, mins, maxs );
+}
+
+int   trap_R_LerpTag( orientation_t *tag, clipHandle_t mod, int startFrame, int endFrame,
+             float frac, const char *tagName )
+{
+  return syscall( CG_R_LERPTAG, tag, mod, startFrame, endFrame, PASSFLOAT(frac), tagName );
+}
+
+void  trap_R_RemapShader( const char *oldShader, const char *newShader, const char *timeOffset )
+{
+  syscall( CG_R_REMAP_SHADER, oldShader, newShader, timeOffset );
+}
+
+void trap_GetGlconfig( glconfig_t *glconfig )
+{
+  syscall( CG_GETGLCONFIG, glconfig );
+}
+
+void trap_GetGameState( gameState_t *gamestate )
+{
+  syscall( CG_GETGAMESTATE, gamestate );
+}
+
+void trap_GetCurrentSnapshotNumber( int *snapshotNumber, int *serverTime )
+{
+  syscall( CG_GETCURRENTSNAPSHOTNUMBER, snapshotNumber, serverTime );
+}
+
+qboolean  trap_GetSnapshot( int snapshotNumber, snapshot_t *snapshot )
+{
+  return syscall( CG_GETSNAPSHOT, snapshotNumber, snapshot );
+}
+
+qboolean  trap_GetServerCommand( int serverCommandNumber )
+{
+  return syscall( CG_GETSERVERCOMMAND, serverCommandNumber );
+}
+
+int trap_GetCurrentCmdNumber( void )
+{
+  return syscall( CG_GETCURRENTCMDNUMBER );
+}
+
+qboolean  trap_GetUserCmd( int cmdNumber, usercmd_t *ucmd )
+{
+  return syscall( CG_GETUSERCMD, cmdNumber, ucmd );
+}
+
+void    trap_SetUserCmdValue( int stateValue, float sensitivityScale )
+{
+  syscall( CG_SETUSERCMDVALUE, stateValue, PASSFLOAT( sensitivityScale ) );
+}
+
+void    testPrintInt( char *string, int i )
+{
+  syscall( CG_TESTPRINTINT, string, i );
+}
+
+void    testPrintFloat( char *string, float f )
+{
+  syscall( CG_TESTPRINTFLOAT, string, PASSFLOAT(f) );
+}
+
+int trap_MemoryRemaining( void )
+{
+  return syscall( CG_MEMORY_REMAINING );
+}
+
+qboolean trap_Key_IsDown( int keynum )
+{
+  return syscall( CG_KEY_ISDOWN, keynum );
+}
+
+int trap_Key_GetCatcher( void )
+{
+  return syscall( CG_KEY_GETCATCHER );
+}
+
+void trap_Key_SetCatcher( int catcher )
+{
+  syscall( CG_KEY_SETCATCHER, catcher );
+}
+
+int trap_Key_GetKey( const char *binding )
+{
+  return syscall( CG_KEY_GETKEY, binding );
+}
+
+int trap_Parse_AddGlobalDefine( char *define )
+{
+  return syscall( CG_PARSE_ADD_GLOBAL_DEFINE, define );
+}
+
+int trap_Parse_LoadSource( const char *filename )
+{
+  return syscall( CG_PARSE_LOAD_SOURCE, filename );
+}
+
+int trap_Parse_FreeSource( int handle )
+{
+  return syscall( CG_PARSE_FREE_SOURCE, handle );
+}
+
+int trap_Parse_ReadToken( int handle, pc_token_t *pc_token )
+{
+  return syscall( CG_PARSE_READ_TOKEN, handle, pc_token );
+}
+
+int trap_Parse_SourceFileAndLine( int handle, char *filename, int *line )
+{
+  return syscall( CG_PARSE_SOURCE_FILE_AND_LINE, handle, filename, line );
+}
+
+void  trap_S_StopBackgroundTrack( void )
+{
+  syscall( CG_S_STOPBACKGROUNDTRACK );
+}
+
+int trap_RealTime(qtime_t *qtime)
+{
+  return syscall( CG_REAL_TIME, qtime );
+}
+
+void trap_SnapVector( float *v )
+{
+  syscall( CG_SNAPVECTOR, v );
+}
+
+// this returns a handle.  arg0 is the name in the format "idlogo.roq", set arg1 to NULL, alteredstates to qfalse (do not alter gamestate)
+int trap_CIN_PlayCinematic( const char *arg0, int xpos, int ypos, int width, int height, int bits )
+{
+  return syscall(CG_CIN_PLAYCINEMATIC, arg0, xpos, ypos, width, height, bits);
+}
+
+// stops playing the cinematic and ends it.  should always return FMV_EOF
+// cinematics must be stopped in reverse order of when they are started
+e_status trap_CIN_StopCinematic( int handle )
+{
+  return syscall(CG_CIN_STOPCINEMATIC, handle);
+}
+
+
+// will run a frame of the cinematic but will not draw it.  Will return FMV_EOF if the end of the cinematic has been reached.
+e_status trap_CIN_RunCinematic( int handle )
+{
+  return syscall(CG_CIN_RUNCINEMATIC, handle);
+}
+
+
+// draws the current frame
+void trap_CIN_DrawCinematic( int handle )
+{
+  syscall(CG_CIN_DRAWCINEMATIC, handle);
+}
+
+
+// allows you to resize the animation dynamically
+void trap_CIN_SetExtents( int handle, int x, int y, int w, int h )
+{
+  syscall(CG_CIN_SETEXTENTS, handle, x, y, w, h);
+}
+
+int trap_GetDemoState( void )
+{
+  return syscall( CG_GETDEMOSTATE );
+}
+
+int trap_GetDemoPos( void )
+{
+  return syscall( CG_GETDEMOPOS );
+}
+
+void trap_GetDemoName( char *buffer, int size )
+{
+  syscall( CG_GETDEMONAME, buffer, size );
+}
+
+void trap_Key_KeynumToStringBuf( int keynum, char *buf, int buflen ) {
+  syscall( CG_KEY_KEYNUMTOSTRINGBUF, keynum, buf, buflen );
+}
+
+void trap_Key_GetBindingBuf( int keynum, char *buf, int buflen ) {
+  syscall( CG_KEY_GETBINDINGBUF, keynum, buf, buflen );
+}
+
+void trap_Key_SetBinding( int keynum, const char *binding ) {
+  syscall( CG_KEY_SETBINDING, keynum, binding );
+}
+

src/cgame/cg_tutorial.c

@@ -0,0 +1,669 @@
+/*
+===========================================================================
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// cg_tutorial.c -- the tutorial system
+
+#include "cg_local.h"
+
+typedef struct
+{
+  char      *command;
+  char      *humanName;
+  keyNum_t  keys[ 2 ];
+} bind_t;
+
+static bind_t bindings[ ] =
+{
+  { "+button2",       "Activate Upgrade",       { -1, -1 } },
+  { "+speed",         "Run/Walk",               { -1, -1 } },
+  { "boost",          "Sprint",                 { -1, -1 } },
+  { "+moveup",        "Jump",                   { -1, -1 } },
+  { "+movedown",      "Crouch",                 { -1, -1 } },
+  { "+attack",        "Primary Attack",         { -1, -1 } },
+  { "+button5",       "Secondary Attack",       { -1, -1 } },
+  { "reload",         "Reload",                 { -1, -1 } },
+  { "buy ammo",       "Buy Ammo",               { -1, -1 } },
+  { "itemact medkit", "Use Medkit",             { -1, -1 } },
+  { "+button7",       "Use Structure/Evolve",   { -1, -1 } },
+  { "deconstruct",    "Deconstruct Structure",  { -1, -1 } },
+  { "weapprev",       "Previous Upgrade",       { -1, -1 } },
+  { "weapnext",       "Next Upgrade",           { -1, -1 } }
+};
+
+static const int numBindings = sizeof( bindings ) / sizeof( bind_t );
+
+/*
+=================
+CG_GetBindings
+=================
+*/
+static void CG_GetBindings( void )
+{
+  int   i, j, numKeys;
+  char  buffer[ MAX_STRING_CHARS ];
+
+  for( i = 0; i < numBindings; i++ )
+  {
+    bindings[ i ].keys[ 0 ] = bindings[ i ].keys[ 1 ] = K_NONE;
+    numKeys = 0;
+
+    for( j = 0; j < K_LAST_KEY; j++ )
+    {
+      trap_Key_GetBindingBuf( j, buffer, MAX_STRING_CHARS );
+
+      if( buffer[ 0 ] == 0 )
+        continue;
+
+      if( !Q_stricmp( buffer, bindings[ i ].command ) )
+      {
+        bindings[ i ].keys[ numKeys++ ] = j;
+
+        if( numKeys > 1 )
+          break;
+      }
+    }
+  }
+}
+
+/*
+===============
+CG_KeyNameForCommand
+===============
+*/
+static const char *CG_KeyNameForCommand( const char *command )
+{
+  int         i, j;
+  static char buffer[ MAX_STRING_CHARS ];
+  int         firstKeyLength;
+
+  buffer[ 0 ] = '\0';
+
+  for( i = 0; i < numBindings; i++ )
+  {
+    if( !Q_stricmp( command, bindings[ i ].command ) )
+    {
+      if( bindings[ i ].keys[ 0 ] != K_NONE )
+      {
+        trap_Key_KeynumToStringBuf( bindings[ i ].keys[ 0 ],
+            buffer, MAX_STRING_CHARS );
+        firstKeyLength = strlen( buffer );
+
+        for( j = 0; j < firstKeyLength; j++ )
+          buffer[ j ] = toupper( buffer[ j ] );
+
+        if( bindings[ i ].keys[ 1 ] != K_NONE )
+        {
+          Q_strcat( buffer, MAX_STRING_CHARS, " or " );
+          trap_Key_KeynumToStringBuf( bindings[ i ].keys[ 1 ],
+              buffer + strlen( buffer ), MAX_STRING_CHARS - strlen( buffer ) );
+
+          for( j = firstKeyLength + 4; j < strlen( buffer ); j++ )
+            buffer[ j ] = toupper( buffer[ j ] );
+        }
+      }
+      else
+      {
+        Q_strncpyz( buffer, va( "\"%s\"", bindings[ i ].humanName ),
+            MAX_STRING_CHARS );
+        Q_strcat( buffer, MAX_STRING_CHARS, " (unbound)" );
+      }
+
+      return buffer;
+    }
+  }
+
+  return "";
+}
+
+#define MAX_TUTORIAL_TEXT 4096
+
+/*
+===============
+CG_BuildableInRange
+===============
+*/
+static entityState_t *CG_BuildableInRange( playerState_t *ps, float *healthFraction )
+{
+  vec3_t        view, point;
+  trace_t       trace;
+  entityState_t *es;
+  int           health;
+
+  AngleVectors( cg.refdefViewAngles, view, NULL, NULL );
+  VectorMA( cg.refdef.vieworg, 64, view, point );
+  CG_Trace( &trace, cg.refdef.vieworg, NULL, NULL,
+            point, ps->clientNum, MASK_SHOT );
+
+  es = &cg_entities[ trace.entityNum ].currentState;
+
+  if( healthFraction )
+  {
+    health = es->generic1 & B_HEALTH_MASK;
+    *healthFraction = (float)health / B_HEALTH_MASK;
+  }
+
+  if( es->eType == ET_BUILDABLE &&
+      ps->stats[ STAT_PTEAM ] == BG_FindTeamForBuildable( es->modelindex ) )
+    return es;
+  else
+    return NULL;
+}
+
+/*
+===============
+CG_AlienBuilderText
+===============
+*/
+static void CG_AlienBuilderText( char *text, playerState_t *ps )
+{
+  buildable_t   buildable = ps->stats[ STAT_BUILDABLE ] & ~SB_VALID_TOGGLEBIT;
+  entityState_t *es;
+
+  if( buildable > BA_NONE )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to place the %s\n",
+          CG_KeyNameForCommand( "+attack" ),
+          BG_FindHumanNameForBuildable( buildable ) ) );
+
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to cancel placing the %s\n",
+          CG_KeyNameForCommand( "+button5" ),
+          BG_FindHumanNameForBuildable( buildable ) ) );
+  }
+  else
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to build a structure\n",
+          CG_KeyNameForCommand( "+attack" ) ) );
+
+    if( ( es = CG_BuildableInRange( ps, NULL ) ) )
+    {
+      if( cgs.markDeconstruct )
+      {
+        if( es->generic1 & B_MARKED_TOGGLEBIT )
+        {
+          Q_strcat( text, MAX_TUTORIAL_TEXT,
+              va( "Press %s to unmark this structure\n",
+                CG_KeyNameForCommand( "deconstruct" ) ) );
+        }
+        else
+        {
+          Q_strcat( text, MAX_TUTORIAL_TEXT,
+              va( "Press %s to mark this structure\n",
+                CG_KeyNameForCommand( "deconstruct" ) ) );
+        }
+      }
+      else
+      {
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Press %s to destroy this structure\n",
+              CG_KeyNameForCommand( "deconstruct" ) ) );
+      }
+    }
+  }
+
+  if( ps->stats[ STAT_PCLASS ] == PCL_ALIEN_BUILDER0_UPG )
+  {
+    if( ( ps->stats[ STAT_BUILDABLE ] & ~SB_VALID_TOGGLEBIT ) == BA_NONE )
+    {
+      Q_strcat( text, MAX_TUTORIAL_TEXT,
+          va( "Press %s to swipe\n",
+            CG_KeyNameForCommand( "+button5" ) ) );
+    }
+
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to launch a projectile\n",
+          CG_KeyNameForCommand( "+button2" ) ) );
+
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to walk on walls\n",
+          CG_KeyNameForCommand( "+movedown" ) ) );
+  }
+}
+
+/*
+===============
+CG_AlienLevel0Text
+===============
+*/
+static void CG_AlienLevel0Text( char *text, playerState_t *ps )
+{
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      "Touch a human to damage it\n" );
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to walk on walls\n",
+        CG_KeyNameForCommand( "+movedown" ) ) );
+}
+
+/*
+===============
+CG_AlienLevel1Text
+===============
+*/
+static void CG_AlienLevel1Text( char *text, playerState_t *ps )
+{
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      "Touch a human to grab it\n" );
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to swipe\n",
+        CG_KeyNameForCommand( "+attack" ) ) );
+
+  if( ps->stats[ STAT_PCLASS ] == PCL_ALIEN_LEVEL1_UPG )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to spray poisonous gas\n",
+          CG_KeyNameForCommand( "+button5" ) ) );
+  }
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to walk on walls\n",
+        CG_KeyNameForCommand( "+movedown" ) ) );
+}
+
+/*
+===============
+CG_AlienLevel2Text
+===============
+*/
+static void CG_AlienLevel2Text( char *text, playerState_t *ps )
+{
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to bite\n",
+        CG_KeyNameForCommand( "+attack" ) ) );
+
+  if( ps->stats[ STAT_PCLASS ] == PCL_ALIEN_LEVEL2_UPG )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to invoke an electrical attack\n",
+          CG_KeyNameForCommand( "+button5" ) ) );
+  }
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Hold down %s then touch a wall to wall jump\n",
+        CG_KeyNameForCommand( "+moveup" ) ) );
+}
+
+/*
+===============
+CG_AlienLevel3Text
+===============
+*/
+static void CG_AlienLevel3Text( char *text, playerState_t *ps )
+{
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to bite\n",
+        CG_KeyNameForCommand( "+attack" ) ) );
+
+  if( ps->stats[ STAT_PCLASS ] == PCL_ALIEN_LEVEL3_UPG )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to launch a projectile\n",
+          CG_KeyNameForCommand( "+button2" ) ) );
+  }
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Hold down and release %s to pounce\n",
+        CG_KeyNameForCommand( "+button5" ) ) );
+}
+
+/*
+===============
+CG_AlienLevel4Text
+===============
+*/
+static void CG_AlienLevel4Text( char *text, playerState_t *ps )
+{
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to swipe\n",
+        CG_KeyNameForCommand( "+attack" ) ) );
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Hold down and release %s to charge\n",
+        CG_KeyNameForCommand( "+button5" ) ) );
+}
+
+/*
+===============
+CG_HumanCkitText
+===============
+*/
+static void CG_HumanCkitText( char *text, playerState_t *ps )
+{
+  buildable_t buildable = ps->stats[ STAT_BUILDABLE ] & ~SB_VALID_TOGGLEBIT;
+  float       health;
+
+  if( buildable > BA_NONE )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to place the %s\n",
+          CG_KeyNameForCommand( "+attack" ),
+          BG_FindHumanNameForBuildable( buildable ) ) );
+
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to cancel placing the %s\n",
+          CG_KeyNameForCommand( "+button5" ),
+          BG_FindHumanNameForBuildable( buildable ) ) );
+  }
+  else
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to build a structure\n",
+          CG_KeyNameForCommand( "+attack" ) ) );
+
+    if( CG_BuildableInRange( ps, &health ) )
+    {
+      if( health < 1.0f )
+      {
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Hold %s to repair this structure\n",
+              CG_KeyNameForCommand( "+button5" ) ) );
+      }
+
+      Q_strcat( text, MAX_TUTORIAL_TEXT,
+          va( "Press %s to destroy this structure\n",
+            CG_KeyNameForCommand( "deconstruct" ) ) );
+    }
+  }
+}
+
+/*
+===============
+CG_HumanText
+===============
+*/
+static void CG_HumanText( char *text, playerState_t *ps )
+{
+  char      *name;
+  int       ammo, clips;
+  upgrade_t upgrade = UP_NONE;
+
+  if( cg.weaponSelect <= 32 )
+    name = cg_weapons[ cg.weaponSelect ].humanName;
+  else if( cg.weaponSelect > 32 )
+  {
+    name = cg_upgrades[ cg.weaponSelect - 32 ].humanName;
+    upgrade = cg.weaponSelect - 32;
+  }
+
+  BG_UnpackAmmoArray( ps->weapon, ps->ammo, ps->powerups, &ammo, &clips );
+
+  if( !ammo && !clips && !BG_FindInfinteAmmoForWeapon( ps->weapon ) )
+  {
+    //no ammo
+    switch( ps->weapon )
+    {
+      case WP_MACHINEGUN:
+      case WP_CHAINGUN:
+      case WP_SHOTGUN:
+      case WP_FLAMER:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Find an Armoury and press %s for more ammo\n",
+              CG_KeyNameForCommand( "buy ammo" ) ) );
+        break;
+
+      case WP_LAS_GUN:
+      case WP_PULSE_RIFLE:
+      case WP_MASS_DRIVER:
+      case WP_LUCIFER_CANNON:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Find a Reactor or Repeater and press %s for more ammo\n",
+              CG_KeyNameForCommand( "buy ammo" ) ) );
+        break;
+
+      default:
+        break;
+    }
+  }
+  else
+  {
+    switch( ps->weapon )
+    {
+      case WP_BLASTER:
+      case WP_MACHINEGUN:
+      case WP_SHOTGUN:
+      case WP_LAS_GUN:
+      case WP_CHAINGUN:
+      case WP_PULSE_RIFLE:
+      case WP_FLAMER:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Press %s to fire the %s\n",
+              CG_KeyNameForCommand( "+attack" ),
+              BG_FindHumanNameForWeapon( ps->weapon ) ) );
+        break;
+
+      case WP_MASS_DRIVER:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Press %s to fire the %s\n",
+              CG_KeyNameForCommand( "+attack" ),
+              BG_FindHumanNameForWeapon( ps->weapon ) ) );
+
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Hold %s to zoom\n",
+              CG_KeyNameForCommand( "+button5" ) ) );
+        break;
+
+      case WP_PAIN_SAW:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Hold %s to activate the %s\n",
+              CG_KeyNameForCommand( "+attack" ),
+              BG_FindHumanNameForWeapon( ps->weapon ) ) );
+        break;
+
+      case WP_LUCIFER_CANNON:
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Hold and release %s to fire a charged shot\n",
+              CG_KeyNameForCommand( "+attack" ) ) );
+
+        Q_strcat( text, MAX_TUTORIAL_TEXT,
+            va( "Press %s to fire the %s\n",
+              CG_KeyNameForCommand( "+button5" ),
+              BG_FindHumanNameForWeapon( ps->weapon ) ) );
+        break;
+
+      case WP_HBUILD:
+      case WP_HBUILD2:
+        CG_HumanCkitText( text, ps );
+        break;
+
+      default:
+        break;
+    }
+  }
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s and ",
+          CG_KeyNameForCommand( "weapprev" ) ) );
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "%s to select an upgrade\n",
+          CG_KeyNameForCommand( "weapnext" ) ) );
+
+  if( upgrade == UP_NONE ||
+      ( upgrade > UP_NONE && BG_FindUsableForUpgrade( upgrade ) ) )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to use the %s\n",
+            CG_KeyNameForCommand( "+button2" ),
+            name ) );
+  }
+
+  if( ps->stats[ STAT_HEALTH ] <= 35 &&
+      BG_InventoryContainsUpgrade( UP_MEDKIT, ps->stats ) )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to use your %s\n",
+          CG_KeyNameForCommand( "itemact medkit" ),
+          BG_FindHumanNameForUpgrade( UP_MEDKIT ) ) );
+  }
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to use a structure\n",
+        CG_KeyNameForCommand( "+button7" ) ) );
+
+  Q_strcat( text, MAX_TUTORIAL_TEXT,
+      va( "Press %s to sprint\n",
+        CG_KeyNameForCommand( "boost" ) ) );
+}
+
+/*
+===============
+CG_SpectatorText
+===============
+*/
+static void CG_SpectatorText( char *text, playerState_t *ps )
+{
+  if( ps->pm_flags & PMF_FOLLOW )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to return to free spectator mode\n",
+          CG_KeyNameForCommand( "+button2" ) ) );
+
+    if( CG_PlayerCount( ) > 1 )
+    {
+      Q_strcat( text, MAX_TUTORIAL_TEXT,
+          va( "Press %s or ",
+            CG_KeyNameForCommand( "weapprev" ) ) );
+      Q_strcat( text, MAX_TUTORIAL_TEXT,
+          va( "%s to change player\n",
+            CG_KeyNameForCommand( "weapnext" ) ) );
+    }
+  }
+  else if( ps->pm_type == PM_SPECTATOR )
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to join a team\n",
+          CG_KeyNameForCommand( "+attack" ) ) );
+
+    if( CG_PlayerCount( ) > 0 )
+    {
+      Q_strcat( text, MAX_TUTORIAL_TEXT,
+          va( "Press %s to enter spectator follow mode\n",
+            CG_KeyNameForCommand( "+button2" ) ) );
+    }
+  }
+  else
+  {
+    Q_strcat( text, MAX_TUTORIAL_TEXT,
+        va( "Press %s to spawn\n",
+          CG_KeyNameForCommand( "+attack" ) ) );
+  }
+}
+
+/*
+===============
+CG_TutorialText
+
+Returns context help for the current class/weapon
+===============
+*/
+const char *CG_TutorialText( void )
+{
+  playerState_t *ps;
+  static char   text[ MAX_TUTORIAL_TEXT ];
+
+  CG_GetBindings( );
+
+  text[ 0 ] = '\0';
+  ps = &cg.snap->ps;
+
+  if( !cg.intermissionStarted && !cg.demoPlayback )
+  {
+    if( ps->persistant[ PERS_TEAM ] == TEAM_SPECTATOR ||
+        ps->pm_flags & PMF_FOLLOW )
+    {
+      CG_SpectatorText( text, ps );
+    }
+    else if( ps->stats[ STAT_HEALTH ] > 0 )
+    {
+      switch( ps->stats[ STAT_PCLASS ] )
+      {
+        case PCL_ALIEN_BUILDER0:
+        case PCL_ALIEN_BUILDER0_UPG:
+          CG_AlienBuilderText( text, ps );
+          break;
+
+        case PCL_ALIEN_LEVEL0:
+          CG_AlienLevel0Text( text, ps );
+          break;
+
+        case PCL_ALIEN_LEVEL1:
+        case PCL_ALIEN_LEVEL1_UPG:
+          CG_AlienLevel1Text( text, ps );
+          break;
+
+        case PCL_ALIEN_LEVEL2:
+        case PCL_ALIEN_LEVEL2_UPG:
+          CG_AlienLevel2Text( text, ps );
+          break;
+
+        case PCL_ALIEN_LEVEL3:
+        case PCL_ALIEN_LEVEL3_UPG:
+          CG_AlienLevel3Text( text, ps );
+          break;
+
+        case PCL_ALIEN_LEVEL4:
+          CG_AlienLevel4Text( text, ps );
+          break;
+
+        case PCL_HUMAN:
+          CG_HumanText( text, ps );
+          break;
+
+        default:
+          break;
+      }
+
+      if( ps->stats[ STAT_PTEAM ] == PTE_ALIENS )
+      {
+        entityState_t *es = CG_BuildableInRange( ps, NULL );
+
+        if( ps->stats[ STAT_STATE ] & SS_HOVELING )
+        {
+          Q_strcat( text, MAX_TUTORIAL_TEXT,
+              va( "Press %s to exit the hovel\n",
+                CG_KeyNameForCommand( "+button7" ) ) );
+        }
+        else if( es && es->modelindex == BA_A_HOVEL &&
+                 es->generic1 & B_SPAWNED_TOGGLEBIT &&
+                 ( ps->stats[ STAT_PCLASS ] == PCL_ALIEN_BUILDER0 ||
+                   ps->stats[ STAT_PCLASS ] == PCL_ALIEN_BUILDER0_UPG ) )
+        {
+          Q_strcat( text, MAX_TUTORIAL_TEXT,
+              va( "Press %s to enter the hovel\n",
+                CG_KeyNameForCommand( "+button7" ) ) );
+        }
+        else if( BG_UpgradeClassAvailable( ps ) )
+        {
+          Q_strcat( text, MAX_TUTORIAL_TEXT,
+              va( "Press %s to evolve\n",
+                CG_KeyNameForCommand( "+button7" ) ) );
+        }
+      }
+    }
+
+    Q_strcat( text, MAX_TUTORIAL_TEXT, "Press ESC for the menu" );
+  }
+
+  return text;
+}