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fifo.c
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fifo.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* fifo.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rertzer <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/12/19 15:58:54 by rertzer #+# #+# */
/* Updated: 2023/01/05 10:02:10 by rertzer ### ########.fr */
/* */
/* ************************************************************************** */
#include "so_long.h"
void fifo_push(t_sldata *sldata, t_fifo **fifo, t_coord coord)
{
t_fifo *new;
t_fifo *last;
new = malloc(sizeof(t_fifo));
if (new == NULL)
error_exit(sldata, MALL);
new->coord.x = coord.x;
new->coord.y = coord.y;
new->next = NULL;
if (*fifo == NULL)
{
*fifo = new;
return ;
}
last = *fifo;
while (last->next != NULL)
last = last->next;
last->next = new;
}
t_coord fifo_pop(t_fifo **fifo)
{
t_coord coord;
t_fifo *first;
first = *fifo;
coord.x = first->coord.x;
coord.y = first->coord.y;
*fifo = first->next;
free(first);
return (coord);
}
void fifo_feed(t_sldata *sldata, t_fifo **fifo, t_bermap *path_map, \
t_coord pos)
{
t_coord coord;
coord.y = positive(pos.y - 2);
coord.x = pos.x;
while (++(coord.y) < pos.y + 2 && coord.y < path_map->size_y)
fifo_add_neighbor(sldata, fifo, path_map, coord);
coord.x = positive(pos.x - 2);
coord.y = pos.y;
while (++(coord.x) < pos.x + 2 && coord.x < path_map->size_x)
fifo_add_neighbor(sldata, fifo, path_map, coord);
}
void fifo_add_neighbor(t_sldata *sldata, t_fifo **fifo, t_bermap *path_map, \
t_coord coord)
{
if (path_map->map[coord.y][coord.x] != '1')
{
fifo_push(sldata, fifo, coord);
path_map->map[coord.y][coord.x] = '1';
}
}