/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_key_loop.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/17 20:06:26 by rbousset          #+#    #+#             */
/*   Updated: 2020/02/17 20:06:29 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include <cub3d.h>
#include <stdint.h>
#include <stddef.h>

static uint64_t
	ft_find_x(int32_t key, const t_player *pl)
{
	if (key == 0)
		return (pl->pos_x + (pl->dir_y * FT_COLL_MULT));
	else if (key == 1)
		return (pl->pos_x + (pl->dir_x * (FT_COLL_MULT / 2)));
	else if (key == 2)
		return (pl->pos_x - (pl->dir_y * FT_COLL_MULT));
	else if (key == 3)
		return (pl->pos_x - (pl->dir_x * (FT_COLL_MULT / 2)));
	return (1);
}

static uint64_t
	ft_find_y(int32_t key, const t_player *pl)
{
	if (key == 0)
		return (pl->pos_y + (pl->dir_x * FT_COLL_MULT));
	else if (key == 1)
		return (pl->pos_y - (pl->dir_y * (FT_COLL_MULT / 2)));
	else if (key == 2)
		return (pl->pos_y - (pl->dir_x * FT_COLL_MULT));
	else if (key == 3)
		return (pl->pos_y + (pl->dir_y * (FT_COLL_MULT / 2)));
	return (1);
}

static void
	ft_collision(float old_y, float old_x, int32_t key, t_cub *cl)
{
	uint64_t	x;
	uint64_t	y;
	t_player	*pl;

	pl = &cl->plist;
	x = ft_find_x(key, pl);
	y = ft_find_y(key, pl);
	if (cl->mlist.map[y][x] == '1' || cl->mlist.map[y][x] == '2')
	{
		pl->pos_y = old_y;
		pl->pos_x = old_x;
	}
}

int
	ft_key_loop(t_cub *cl)
{
	uint8_t			i;
	const float		old_y = cl->plist.pos_y;
	const float		old_x = cl->plist.pos_x;

	i = 0;
	while (i < 5 && cl->key_input[i] != -1 && cl->key_input[i] <= 5)
	{
		cl->key_ptr[cl->key_input[i]](cl);
		ft_collision(old_y, old_x, cl->key_input[i], cl);
		if (cl->mlist.isnlvl)
		{
			if (ft_warp_level(cl) < 0)
				return (ft_exit(FT_RET_FAILED_STRUCTS, cl));
		}
		i++;
	}
	if (cl->key_input[0] != -1)
		ft_draw_scene(cl);
	return (0);
}