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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 <stdlib.h>
#include <math.h>
static float
**ft_alloc_dist_tab(void)
{
uint16_t i;
float **dist_tab;
if (!(dist_tab = (float **)ft_calloc((FT_TOTAL_SPRT + 1), sizeof(float*))))
return (NULL);
i = 0;
while (i < FT_TOTAL_SPRT + 1)
{
if (!(dist_tab[i] = (float *)ft_calloc(4096, sizeof(float))))
return (NULL);
i++;
}
return (dist_tab);
}
void
ft_sort_sprites(t_cub *cl, int16_t it, int16_t jt)
{
float **dist_tab;
if (!(dist_tab = ft_alloc_dist_tab()))
ft_alloc_error(cl);
while (++jt < FT_TOTAL_SPRT)
{
if (cl->mlist.sprite_nbr[jt] == 0)
dist_tab[jt][0] = 0;
else
{
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));
}
it = -1;
}
}
ft_sort_s_t(cl, dist_tab);
}
static void
ft_put_sprite(t_sprite *sprite, t_cub *cl)
{
double dist;
t_rgb rgb;
if ((dist = sqrt(pow(cl->plist.pos_x - sprite->s_pos_x, 2)
+ pow(cl->plist.pos_y - sprite->s_pos_y, 2))) <= 0)
dist = 0.0001;
rgb.r = (uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x
* 4 + 4 * cl->tlist[sprite->current_sprite].img_w * sprite->tex_y + 2];
rgb.g = (uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x
* 4 + 4 * cl->tlist[sprite->current_sprite].img_w * sprite->tex_y + 1];
rgb.b = (uint8_t)cl->tlist[sprite->current_sprite].ptr[sprite->tex_x
* 4 + 4 * cl->tlist[sprite->current_sprite].img_w * sprite->tex_y];
*(int*)(cl->img.ptr + ((uint16_t)sprite->x * 4 +
(sprite->y * cl->img.sizeline))) = ft_rgb_to_hex(dist, rgb, cl);
}
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_w * 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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