Move gameScreen off of the stack and onto the heap

Just so it can be properly used globally like all the other classes.

desktop_version/src/Screen.cpp

@@ -17,7 +17,7 @@ extern "C"
 	);
 }
 
-Screen::Screen()
+void Screen::init()
 {
 	m_window = NULL;
 	m_renderer = NULL;

desktop_version/src/Screen.h

@@ -6,7 +6,7 @@
 class Screen
 {
 public:
-	Screen();
+	void init();
 
 	void ResizeScreen(int x, int y);
 	void GetWindowSize(int* x, int* y);
@@ -33,6 +33,6 @@ public:
 	SDL_Rect filterSubrect;
 };
 
-
+extern Screen gameScreen;
 
 #endif /* SCREEN_H */

desktop_version/src/main.cpp

@@ -43,6 +43,7 @@ Game game;
 KeyPoll key;
 mapclass map;
 entityclass obj;
+Screen gameScreen;
 
 bool startinplaytest = false;
 bool savefileplaytest = false;
@@ -121,7 +122,7 @@ int main(int argc, char *argv[])
 
     NETWORK_init();
 
-    Screen gameScreen;
+    gameScreen.init();
 
     printf("\t\t\n");
     printf("\t\t\n");