#include <stdlib.h>
#include <unistd.h>
#include <curses.h>

#include "game.h"
#include "player.h"
#include "paddle.h"

static void wait(struct game *g);
static void input(struct game *g);
static void update(struct game *g);
static void draw(struct game *g);

struct game *
new_game(void)
{
	struct game *g;

	g = malloc(sizeof(*g));
	if (g == NULL) {
		return NULL;
	}

	g->players[0] = new_player(0);
	g->players[1] = new_player(1);

	return g;
}

void
free_game(struct game *g)
{
	free_player(g->players[0]);
	free_player(g->players[1]);

	free(g);
}

void
run_game(struct game *g)
{
	g->running = 1;

	while (g->running) {
		input(g);
		update(g);
		draw(g);
		wait(g);
	}
}

static void
wait(struct game *g)
{
	++g;
	usleep(10000);
}

static void
input(struct game *g)
{
	int c;

	timeout(0);
	for (;;) {
		c = getch();
		if (c == 'q') {
			g->running = 0;
		} else if (c == ERR) {
			break;
		} else if (c == KEY_LEFT) {
			g->players[0]->paddle_h.dir = -1;
		} else if (c == KEY_RIGHT) {
			g->players[0]->paddle_h.dir = 1;
		} else if (c == KEY_UP) {
			g->players[0]->paddle_v.dir = -1;
		} else if (c == KEY_DOWN) {
			g->players[0]->paddle_v.dir = 1;
		}
	}
}

static void
update(struct game *g)
{
	update_paddle(&g->players[0]->paddle_h);
	update_paddle(&g->players[0]->paddle_v);
	update_paddle(&g->players[1]->paddle_h);
	update_paddle(&g->players[1]->paddle_v);
}

static void
draw(struct game *g)
{
	draw_paddle(&g->players[0]->paddle_h);
	draw_paddle(&g->players[0]->paddle_v);
	draw_paddle(&g->players[1]->paddle_h);
	draw_paddle(&g->players[1]->paddle_v);
}