start 380 project5

changes to 380 project 4
changes to 350 project 2

Signed-off-by: Amrit Panesar <apanesar@4195tech.com>

COM380/Project5/GambleKit/Engine/Game/Entities/GkGameButton.cpp

@@ -0,0 +1,176 @@
+//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+//	GambleKit Copyright (C) 2014 Ivan Donev
+//
+//	This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
+//
+//	This library 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 Lesser General Public License for more details.
+//
+//	You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+//	contact: gamblekit@gmail.com
+//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+#include "GkGameButton.h"
+
+GkGameButton::GkGameButton(GkGameEntity *defaultFace, GkGameEntity *selectedFace, GkGameEntity *disabledFace, bool autoEnable, int x, int y, int width, int height)
+	: GkGameEntity()
+{
+	this->defaultFace = defaultFace;
+	this->selectedFace = selectedFace;
+	this->disabledFace = disabledFace;
+
+	this->x = x;
+	this->y = y;
+
+	if ((width == 0) && (height == 0))
+	{
+		if (defaultFace != 0)
+		{
+			int x1, y1, x2, y2;
+			if (defaultFace->GetBoundaries(&x1, &y1, &x2, &y2))
+			{
+				this->width = x2 - x1;
+				this->height = y2 - y1;
+			}
+		}
+	}
+	else
+	{
+		this->width = width;
+		this->height = height;
+	}
+
+	this->visible = true;
+	this->clicked = false;
+	this->down = false;
+	this->enabled = true;
+	this->autoEnable = autoEnable;
+	this->pushed = false;
+}
+
+
+GkGameButton::~GkGameButton(void)
+{
+	if (this->defaultFace != 0)
+		delete this->defaultFace;
+
+	if (this->selectedFace != 0)
+		delete this->selectedFace;
+
+	if (this->disabledFace != 0)
+		delete this->disabledFace;
+}
+
+
+void GkGameButton::Down()
+{
+	if (!this->IsActive())
+		return;
+
+	this->pushed = true;
+	this->down = true;
+}
+
+void GkGameButton::Up(bool click)
+{
+	if (!this->IsActive())
+		return;
+	
+	this->pushed = false;
+	this->clicked = click;
+}
+
+void GkGameButton::MouseDown(int x, int y)
+{
+	if (this->IsMouseOver(x, y))
+		this->Down();
+}
+
+void GkGameButton::MouseUp(int x, int y)
+{
+	this->Up(this->pushed && this->IsMouseOver(x, y));
+}
+
+bool GkGameButton::WasDown()
+{
+	bool result = this->down;
+	
+	this->clicked = false;
+	this->down = false;
+	this->read = true;
+
+	return result;
+}
+
+bool GkGameButton::IsClicked()
+{
+	bool result = this->clicked;
+	
+	this->clicked = false;
+	this->down = false;
+	this->read = true;
+
+	return result;
+}
+
+bool GkGameButton::IsActive()
+{
+	return this->enabled && this->visible;
+}
+
+GkGameEntity* GkGameButton::GetCurrentFace()
+{
+	if (this->enabled)
+	{
+		if (this->pushed)
+			return this->selectedFace != 0 ? this->selectedFace : this->defaultFace;
+		else
+			return this->defaultFace;
+	}
+	else
+	{
+		return this->disabledFace != 0 ? this->disabledFace : this->defaultFace;	
+	}
+}
+
+bool GkGameButton::IsMouseOver(int x, int y)
+{
+	if (this->defaultFace != 0)
+	{
+		// if a defaultFace is given, check a region, relative to it
+		int x1, y1, x2, y2;
+		if (defaultFace->GetBoundaries(&x1, &y1, &x2, &y2))
+			return (x > x1 + this->x) && (x < x1 + this->x + this->width) && (y > y1 + this->y) && (y < y1 + this->y + this->height);
+	}
+	else
+	{
+		// if defaultFace is not given, i.e. the button has no visible part, check its region without relation
+		return (x > this->x) && (x < this->x + this->width) && (y > this->y) && (y < this->y + this->height);
+	}
+
+	return false;
+}
+
+void GkGameButton::Process(GkGame *game)
+{
+	if (this->autoEnable)
+	{
+		this->enabled = this->read;
+		this->read = false;
+	}
+
+	GkGameEntity *face = this->GetCurrentFace();
+	if (face != 0)
+		face->Process(game);
+}
+
+void GkGameButton::Draw(GkGame *game)
+{
+	if (!visible)
+		return;
+
+	GkGameEntity *currentFace = this->GetCurrentFace();
+
+	if (currentFace != 0)
+		currentFace->Draw(game);
+}