Added automatic backtracing via RegisterStacktrace in Backtrace. Added a simple hello world demo that just throws up a window. Started working on TileSet again and skeletoned a demo for it.

demo/helloworld/cpp/demo.cpp

@@ -0,0 +1,33 @@
+/*
+ * This demo starts up and does nothing until you hit Escape to kill it.
+ */
+
+#include <libsdlgame/libsdlgame.h>
+
+int main(int argc, char *argv[])
+{
+	Display2D display = Display2D();
+	Game &myGame = Game::NewSingleton();
+	unsigned int lastTimer = 0;
+
+	myGame.initSDL();
+	myGame.initVideo(640, 480, 32, SDL_HWSURFACE|SDL_DOUBLEBUF);
+	display.initVideo((Vector){0,0,0}, 640, 480, 32, SDL_HWSURFACE);
+	display.setActive(1);
+	myGame.windows.push_back(&display);
+
+	lastTimer = SDL_GetTicks();
+
+	while ( 1 ) {
+	    if ( (SDL_GetTicks() - lastTimer) >= (1000/30) ) {
+		myGame.update();
+		lastTimer = SDL_GetTicks();
+	    } else {
+		myGame.update(1);
+	    }
+	    if ( myGame.keyHeldDown(SDLK_ESCAPE) ) {
+		break;
+	    }
+	    myGame.finishFrame();
+	}
+}