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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_draw_sprite.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/24 20:22:45 by rbousset #+# #+# */
/* Updated: 2020/03/09 18:56:01 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <cub3d.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
static void
ft_sort_sprites_norme(float *dist_tab, int16_t *i, uint16_t j, t_cub *cl)
{
uint32_t tmp;
uint32_t it;
it = *i;
tmp = 0;
if (dist_tab[it] < dist_tab[it + 1])
{
tmp = dist_tab[it];
dist_tab[it] = dist_tab[it + 1];
dist_tab[it + 1] = tmp;
tmp = cl->mlist.sprite_order[j][it];
cl->mlist.sprite_order[j][it] = cl->mlist.sprite_order[j][it + 1];
cl->mlist.sprite_order[j][it + 1] = tmp;
*i = -1;
}
}
void
ft_sort_sprites(t_cub *cl, int16_t it, int16_t jt)
{
float dist_tab[8][4096];
while (++jt <= cl->mlist.sprite_var)
{
while (++it <= cl->mlist.sprite_nbr[jt])
{
dist_tab[jt][it] =
((cl->plist.pos_x - cl->sprites[jt][it].s_pos_x) *
(cl->plist.pos_x - cl->sprites[jt][it].s_pos_x) +
(cl->plist.pos_y - cl->sprites[jt][it].s_pos_y) *
(cl->plist.pos_y - cl->sprites[jt][it].s_pos_y));
cl->mlist.sprite_order[jt][it] = it;
}
it = -1;
}
it = -1;
jt = -1;
while (++jt < cl->mlist.sprite_var)
{
while (++it < cl->mlist.sprite_nbr[jt] - 1)
ft_sort_sprites_norme(dist_tab[jt], &it, jt, cl);
it = -1;
}
}
static void
ft_put_sprite(t_sprite *sprite, t_cub *cl)
{
float dist;
float calc;
if ((dist = cl->rlist.wall_dist_tab[sprite->x]) <= 0)
dist = 0.0001;
calc = (dist * 0.1 * cl->mlist.darklvl);
calc = (calc >= 255) ? (255) : (calc);
calc = (calc < 1) ? (1) : (calc);
cl->img.ptr[sprite->x * 4 + (sprite->y * cl->img.sizeline)] =
(uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x * 4 + 4 *
cl->tlist[sprite->current_sprite].img_h * sprite->tex_y] / calc;
cl->img.ptr[sprite->x * 4 + (sprite->y * cl->img.sizeline) + 1] =
(uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x * 4 + 4 *
cl->tlist[sprite->current_sprite].img_h * sprite->tex_y + 1] / calc;
cl->img.ptr[sprite->x * 4 + (sprite->y * cl->img.sizeline) + 2] =
(uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x * 4 + 4 *
cl->tlist[sprite->current_sprite].img_h * sprite->tex_y + 2] / calc;
}
void
ft_draw_sprite(t_cub *cl, t_sprite *sprite)
{
int32_t d;
sprite->x = sprite->drawstartx;
while (sprite->x < sprite->drawendx)
{
sprite->tex_x = (int32_t)((sprite->x - (-sprite->spritewidth / 2 +
sprite->spritescreenx))
* cl->tlist[sprite->current_sprite].img_w / sprite->spritewidth);
sprite->y = sprite->drawstarty;
while (sprite->y < sprite->drawendy)
{
d = sprite->y * 256 - cl->wlist.y_size * 128 +
sprite->spriteheight * 128;
sprite->tex_y = ((d * cl->tlist[sprite->current_sprite].img_h / 2) /
sprite->spriteheight) / 128;
if (sprite->transformy > 0 &&
cl->tlist[sprite->current_sprite].ptr[sprite->tex_x * 4 + 4 *
cl->tlist[sprite->current_sprite].img_h * sprite->tex_y]
&& cl->rlist.wall_dist_tab[sprite->x] > sprite->transformy)
ft_put_sprite(sprite, cl);
sprite->y++;
}
sprite->x++;
}
}
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