#include "engine.h"

bool left = true;

// polling events every frame
void
client_poll_event() {
	SDL_Event ev = game_state->event;

	if (ev.type == SDL_EVENT_QUIT) {
		game_state->is_running = false;
	}

	if (ev.type == SDL_EVENT_KEY_DOWN) {
		switch (ev.key.key) {
		case SDLK_Q:
			game_state->is_running = false;
		}
	} 
}

// performed every frame
void
client_update_framebuffer() {
	// draw a green square
	// clear_framebuffer(0x000000);
	// for (int i = 0; i < 20; i++) {
	// 	for (int j = 0; j < 20; j++) {
	// 		put_pixel(i, j, 0x00FF00);
	// 	}
	// }

	// draw alternating green squares
	if (left) {
		clear_framebuffer(0x000000);
		for (int i = 0; i < 20; i++) {
			for (int j = 0; j < 20; j++) {
				put_pixel(i, j, 0x00FF00);
			}
		}
		left = false;
	} else {
		clear_framebuffer(0x000000);
		for (int i = 20; i < 40; i++) {
			for (int j = 20; j < 40; j++) {
				put_pixel(i, j, 0x00FFFF);
			}
		}
		left = true;
	}
	SDL_Delay(100);
}

int main() {
	// initialize the engine
	if (engine_init(
		client_poll_event,
		client_update_framebuffer
	)) {
		engine_start();
		engine_stop();
		return 0;
	} else {
		return 1;
	}
}