#include "konwinlib.h"
#include "konsofren.h"
#include "kontime.h"

#define GAME_WIDTH 320
#define GAME_HEIGHT 180

int main(void)
{
	kon_window_t *window;
	kon_display_t *display;
	kon_camera_t camera;
	kon_material_t material;
	kon_light_t light;
	kon_time last;
	float angle = 0.0f;

	if (!kon_init()) return 1;

	window = kon_createWindow("engine", 0, 0, 800, 600, KON_WINDOW_CENTER | KON_WINDOW_RESIZABLE);
	if (!window) return 1;
	kon_setExitKey(window, KON_KEY_ESCAPE);

	display = kon_createDisplay(GAME_WIDTH, GAME_HEIGHT, 800, 600);
	if (!display) return 1;

	camera = kon_cameraDefault();
	camera.position = KON_VEC3(3, 3, 6);
	material = kon_materialColor(0xFFC8C8FF);
	light = kon_lightDefault();
	last = kon_getTime();

	while (!kon_windowShouldClose(window)) {
		kon_event_t ev;
		kon_time now;
		kon_mat4_t model, viewProjection;

		while (kon_pollEvent(window, &ev)) {
			if (ev.type == KON_EVENT_RESIZE) {
				kon_resizeDisplay(display, ev.width, ev.height);
			}
			if (ev.type == KON_EVENT_KEY_DOWN && ev.key == KON_KEY_O) {
				camera.projection = (camera.projection == KON_PROJECTION_PERSPECTIVE)
					? KON_PROJECTION_ORTHOGRAPHIC : KON_PROJECTION_PERSPECTIVE;
			}
		}

		now = kon_getTime();
		angle += (float)(now - last);
		last = now;

		model = kon_mat4Identity();
		model = kon_mat4Rotate(model, KON_VEC3(angle * 0.5f, angle, 0));
		viewProjection = kon_cameraViewProjection(&camera, display->game->width, display->game->height);

		kon_clearFramebuffer(display->game, KON_BACKGROUND_COLOR);
		kon_drawMesh(display->game, viewProjection, model, &kon_cubeMesh, &material, &light, KON_RENDER_DEFAULT);

		kon_presentDisplay(display);
		kon_blitPixels(window, display->screen->data, display->screen->width, display->screen->height);
		kon_sleep(0.008);
	}

	kon_freeDisplay(display);
	kon_destroyWindow(window);
	kon_deinit();
	return 0;
}