Working toward render timing

project/src/backend/sdl/SDLApplication.cpp

@@ -4,6 +4,16 @@
 namespace lime {
 	
 	
+	AutoGCRoot* Application::callback = 0;
+	
+	
+	double Application::GetTicks () {
+		
+		return SDL_GetTicks ();
+		
+	}
+	
+	
 	SDLApplication::SDLApplication () {
 		
 		SDL_Init (SDL_INIT_VIDEO);
@@ -22,23 +32,43 @@ namespace lime {
 		
 		SDL_Event event;
 		active = true;
+		bool firstTime = true;
+		lastUpdate = SDL_GetTicks ();
+		Uint32 currentUpdate = 0;
+		int deltaTime = 0;
 		
 		while (active) {
 			
-			while (active && SDL_WaitEvent (&event)) {
-				
-				HandleEvent (&event);
-				event.type = -1;
-				if (!active) break;
-				
-			}
+			event.type = -1;
 			
-			while (active && SDL_PollEvent (&event)) {
+			while (active && (firstTime || SDL_WaitEvent (&event))) {
+				
+				firstTime = false;
 				
 				HandleEvent (&event);
 				event.type = -1;
 				if (!active) break;
 				
+				while (active && SDL_PollEvent (&event)) {
+					
+					HandleEvent (&event);
+					event.type = -1;
+					if (!active) break;
+					
+				}
+				
+				currentUpdate = SDL_GetTicks ();
+				deltaTime = currentUpdate - lastUpdate;
+				
+				if (deltaTime > 16) {
+					
+					updateEvent.deltaTime = deltaTime;
+					UpdateEvent::Dispatch (&updateEvent);
+					
+					RenderEvent::Dispatch (&renderEvent);
+					
+				}
+				
 			}
 			
 		}
@@ -92,7 +122,11 @@ namespace lime {
 						ProcessWindowEvent (event);
 						break;
 					
-					case SDL_WINDOWEVENT_EXPOSED: /*poll*/ break;
+					case SDL_WINDOWEVENT_EXPOSED: 
+						
+						RenderEvent::Dispatch (&renderEvent);
+						break;
+					
 					case SDL_WINDOWEVENT_SIZE_CHANGED: /*resize*/ break;
 					case SDL_WINDOWEVENT_FOCUS_GAINED: /*focus in*/ break;
 					case SDL_WINDOWEVENT_FOCUS_LOST: /*focus out*/ break;

project/src/backend/sdl/SDLApplication.h

@@ -4,6 +4,8 @@
 
 #include <SDL.h>
 #include <app/Application.h>
+#include <app/RenderEvent.h>
+#include <app/UpdateEvent.h>
 #include <ui/KeyEvent.h>
 #include <ui/MouseEvent.h>
 #include <ui/TouchEvent.h>
@@ -32,8 +34,11 @@ namespace lime {
 			
 			bool active;
 			KeyEvent keyEvent;
+			Uint32 lastUpdate;
 			MouseEvent mouseEvent;
+			RenderEvent renderEvent;
 			TouchEvent touchEvent;
+			UpdateEvent updateEvent;
 			WindowEvent windowEvent;
 		
 	};

project/src/backend/sdl/SDLRenderer.cpp

@@ -23,6 +23,13 @@ namespace lime {
 	}
 	
 	
+	void SDLRenderer::Flip () {
+		
+		SDL_RenderPresent (sdlRenderer);
+		
+	}
+	
+	
 	Renderer* CreateRenderer (Window* window) {
 		
 		return new SDLRenderer (window);

project/src/backend/sdl/SDLRenderer.h

@@ -16,6 +16,8 @@ namespace lime {
 			SDLRenderer (Window* window);
 			~SDLRenderer ();
 			
+			virtual void Flip ();
+			
 			SDL_Renderer* sdlRenderer;
 		
 	};