#include "game.h"

Game game;

static void _game_tick(Game* self);
static void _game_update(Game* self);
static void _game_draw(Game* self);
static void _game_quit(Game* self);

static void
_game_quit(Game* self)
{
	state_free(&self->state);

	ecs_free(&self->ecs);

	window_free(&self->window);

	resources_free(&self->resources);

	sdl_quit();

	memset(self, '\0', sizeof(Game));

	printf("%s\n", STRING_GAME_EXIT);

	exit(EXIT_SUCCESS);
}

static void
_game_tick(Game* self)
{
	input_tick(&self->input);

	control_tick(&self->control, &self->input);

	state_tick(&self->state);

	ecs_tick(&self->ecs);

	if (event_press(&self->input.event, EVENT_QUIT))
		_game_quit(self);
}

static void
_game_update(Game* self)
{
	renderer_update(&self->renderer);
	ecs_update(&self->ecs);
}

static void
_game_draw(Game* self)
{
	renderer_clear_color_set(&self->renderer, (f32*)RENDERER_CLEAR_COLOR);

	renderer_clear(&self->renderer);

	for (s32 i = 0; i < RENDERER_BUFFER_COUNT; i++)
		renderer_buffer_init(&self->renderer, (RendererBuffer)i);

	ecs_draw(&self->ecs);

	for (s32 i = 0; i < RENDERER_BUFFER_COUNT; i++)
	{
		buffer_draw
		(
			&self->renderer, 
			&self->resources.shaders[SHADER_TEXTURE_QUAD], 
			(RendererBuffer)i,
			&self->postprocessing[i]
		);
		renderer_buffer_free(&self->renderer, (RendererBuffer)i);
	}
	
	renderer_present(&self->renderer);
}
void
game_init(Game* self)
{
	printf("%s\n", STRING_GAME_INIT);

	memset(self, '\0', sizeof(Game));

	RANDOM_SEED_SET(time(NULL));

	resource_shader_read(&self->resources);

	sdl_init();

	window_init(&self->window, STRING_WINDOW_TITLE, (s32*)WINDOW_SIZE, WINDOW_FLAGS);

	renderer_init(&self->renderer, &self->window, CAMERA_ORTHOGRAPHIC, BUFFER_SIZES);

	renderer_clear_color_set(&self->renderer, (f32*)RENDERER_CLEAR_COLOR);

	for (s32 i = 0; i < RENDERER_BUFFER_COUNT; i++)
		postprocessing_init(&self->postprocessing[i], OPAQUE, TRANSPARENT);

	if (!resources_init(&self->resources))
	{
		printf("%s\n", STRING_RESOURCE_ERROR);
		_game_quit(self);
	}

	ecs_init(&self->ecs, &self->renderer, &self->control, &self->input, &self->resources, self->postprocessing);

	state_init(&self->state, &self->ecs, GAME_STATE_START);
}

void
game_loop(Game* self)
{
	tick_update(&self->tick);

	while (self->tick.cumulative > TICK_DELAY)
	{
		_game_tick(self);
		
		self->tick.cumulative -= TICK_DELAY;
	}

	_game_update(self);
	_game_draw(self);
}