libTangerine/examples/hello_world/main.cpp

#include <SDL2/SDL.h>

#include "renderer.h"


int
main()
{
	render_state* rs = renInit();

	if (rs == nullptr)
		return 1;

	const uint TARGET_FPS = 60;
	const uint FRAME_DELAY = 1000 / TARGET_FPS;
	uint frameStart, frameTime;
	bool running = true;
	SDL_Event e;

	while (running) {
		frameStart = SDL_GetTicks();

		while (SDL_PollEvent(&e)) {
			if ((e.type == SDL_KEYDOWN && e.key.keysym.sym == SDLK_ESCAPE)
				|| e.type == SDL_QUIT) {
				running = false;
			}
		}

		renRenderFrame(rs);
		SDL_GL_SwapWindow(rs->handles.window);
		frameTime = SDL_GetTicks() - frameStart;

		if (FRAME_DELAY > frameTime)
			SDL_Delay(FRAME_DELAY - frameTime);
	}

	return 0;
}