From: Ivan Hernanez <iturtleman128@gmail.com>
Date: Mon, 28 May 2012 04:57:10 +0000 (-0500)
Subject: Window Resizeable
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=fbb3a5090d3a41339b4bffc796ec7073da08a8f3;p=IvanGame.git

Window Resizeable
---

diff --git a/Game.cpp b/Game.cpp
index d793d46..2d30670 100644
--- a/Game.cpp
+++ b/Game.cpp
@@ -2,7 +2,7 @@
 #include "fns.h"
 #include <string>
 #include <iostream>
-#include <GL/gl.h>
+#include <SDL/SDL_opengl.h>
 #include "SDL_ttf.h"
 
 const Uint32 Game::waitTime = 1000/60; /* ms */
@@ -28,13 +28,26 @@ void init_GL(int w = 640, int h = 480)
 	glLoadIdentity();
 }
 
+void Reshape( int w, int h )
+{
+	if( h <= 0 ) h = 1 ;
+
+	glViewport( 0, 0, w, h ) ;
+
+	glMatrixMode( GL_PROJECTION ) ;
+	glLoadIdentity() ;
+	gluPerspective( 45.0, (GLfloat)w / (GLfloat)h, 0.1, 1000.0 ) ;
+
+	glMatrixMode( GL_MODELVIEW ) ;
+	glLoadIdentity() ;
+}
 
 /** Global static pointer used to ensure a single instance of the class. */
 Game* Game::m_instance = NULL;
 
 /** This function is called to create an instance of the class.
-	Calling the constructor publicly is not allowed.
-	The constructor is private and is only called by this Instance function.
+Calling the constructor publicly is not allowed.
+The constructor is private and is only called by this Instance function.
 */
 Game* Game::game(){
 	if(!m_instance)
@@ -54,15 +67,21 @@ Game::Game() : mCurrentLevel(0), mScreen(0), ShowCollisions(false), ShowFPS(fals
 	}
 	atexit (SDL_Quit);
 	// Initialize SDL_ttf library
-   if (TTF_Init() != 0)
-   {
-      cerr << "TTF_Init() Failed: " << TTF_GetError() << endl;
-      SDL_Quit();
-      exit(1);
-   }
+	if (TTF_Init() != 0)
+	{
+		cerr << "TTF_Init() Failed: " << TTF_GetError() << endl;
+		SDL_Quit();
+		exit(1);
+	}
 	atexit (TTF_Quit);
+
+	/* Turn on double buffering with a 24bit Z buffer.
+	* You may need to change this to 16 or 32 for your system */
+	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+
 	/** Set 800x600 video mode */
-	mScreen = SDL_SetVideoMode(screenwidth, screenheight, 32, SDL_OPENGL);
+	mScreen = SDL_SetVideoMode(screenwidth, screenheight, 32, SDL_OPENGL | SDL_RESIZABLE);
 	if (!mScreen) {
 		printf ("Couldn't set video mode: %s\n", SDL_GetError ());
 		exit (2);
@@ -72,12 +91,12 @@ Game::Game() : mCurrentLevel(0), mScreen(0), ShowCollisions(false), ShowFPS(fals
 	SDL_WM_SetCaption("Ivan's Game", NULL);
 
 	SDL_ShowCursor(0);
-	
+
 	init_GL(screenwidth, screenheight);
 
 	/** Load Resources */
 	LoadResources();
-	
+
 	// set start time for fps calc
 	startclock = SDL_GetTicks();
 }
@@ -150,6 +169,10 @@ void Game::run()
 			done = 1;
 			break;
 
+		case SDL_VIDEORESIZE :
+			Reshape( event.resize.w, event.resize.h ) ;
+			break ;
+
 		case SDL_USEREVENT:
 			getCurrentLevel()->drawScene();
 			break;
diff --git a/Level.cpp b/Level.cpp
index 3fe9e7e..5d7eca3 100644
--- a/Level.cpp
+++ b/Level.cpp
@@ -48,6 +48,8 @@ void Level::DrawIMG(SDL_Surface *img, int x, int y, int w, int h, int x2, int y2
 
 void Level::drawScene()
 {
+
+	glLoadIdentity();
 	Uint32 color;
 
 	/** Create a black mBackgroundground using the mScreen pixel format (32 bpp) */