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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* map_pathfind.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: kdx <kdx @student.42angouleme.fr +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/10/15 23:59:55 by kdx #+# #+# */
/* Updated: 2022/10/16 00:45:47 by kdx ### ########.fr */
/* */
/* ************************************************************************** */
#include "map.h"
static t_err map_fill(t_map *map, int x, int y)
{
unsigned char tile;
t_err rv;
if (x < 0 || y < 0 || (size_t)x >= map->width || (size_t)y >= map->height
|| (map_get(map, x * TSIZE, y * TSIZE) & 128) != 0)
return (0);
tile = map_get(map, x * TSIZE, y * TSIZE);
map_set(map, x * TSIZE, y * TSIZE, tile | 128);
if (tile == TILE_WALL)
return (0);
if (tile == TILE_EXIT || tile == TILE_COLLECTIBLE)
rv = 1;
else
rv = 0;
return (rv + map_fill(map, x - 1, y) + map_fill(map, x + 1, y)
+ map_fill(map, x, y - 1) + map_fill(map, x, y + 1));
}
static void find_player(t_map *map, int *x, int *y)
{
*y = 0;
while ((size_t)(*y) < map->height)
{
*x = 0;
while ((size_t)(*x) < map->width)
{
if (map_get(map, *x * TSIZE, *y * TSIZE) == TILE_PLAYER)
return ;
*x += 1;
}
if (map_get(map, *x * TSIZE, *y * TSIZE) == TILE_PLAYER)
return ;
*y += 1;
}
}
static t_err expected_result(t_map *map)
{
size_t i;
t_err expected;
i = 0;
expected = 0;
while (map->data[i] != '\0')
{
if (map->data[i] == TILE_EXIT
|| map->data[i] == TILE_COLLECTIBLE)
expected += 1;
i += 1;
}
return (expected);
}
t_err map_pathfind(t_map *map)
{
int x;
int y;
t_err rv;
size_t i;
find_player(map, &x, &y);
rv = map_fill(map, x, y);
i = 0;
while (map->data[i] != '\0')
{
map->data[i] &= 127;
i += 1;
}
return (rv == expected_result(map));
}
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