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libe_trace.c
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libe_trace.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: htorp <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/05/01 16:57:04 by htorp #+# #+# */
/* Updated: 2019/05/01 16:57:08 by htorp ### ########.fr */
/* */
/* ************************************************************************** */
#include "wolf3d.h"
void set_dir(t_wolf *wolf)
{
if (wolf->vect->pov_angle > 0 && wolf->vect->pov_angle <= 90)
{
wolf->vect->dir_x = 1;
wolf->vect->dir_y = 1;
}
if (wolf->vect->pov_angle > 90 && wolf->vect->pov_angle <= 180)
{
wolf->vect->dir_x = -1;
wolf->vect->dir_y = 1;
}
if (wolf->vect->pov_angle > 180 && wolf->vect->pov_angle <= 270)
{
wolf->vect->dir_x = -1;
wolf->vect->dir_y = -1;
}
if (wolf->vect->pov_angle > 270 && wolf->vect->pov_angle <= 360)
{
wolf->vect->dir_x = 1;
wolf->vect->dir_y = -1;
}
}
void find_hor(t_wolf *wolf, t_projectile proj)
{
while (!proj.hit && (wolf->proj->ax) > 0 && (wolf->proj->ay) > 0 &&
(wolf->proj->ax < (wolf->map->width * BLOCK)) &&
(wolf->proj->ay < (wolf->map->height * BLOCK)))
{
proj.map_x = (wolf->proj->ax) / BLOCK;
proj.map_y = (wolf->proj->ay) / BLOCK;
if (wolf->vect->dir_y == 1)
proj.map_y--;
if (wolf->map->i_map[proj.map_y][proj.map_x] > 0)
proj.hit = 1;
else
{
wolf->proj->ax += proj.xa;
wolf->proj->ay += -proj.ya;
}
}
}
void proj_hor(t_wolf *wolf)
{
t_projectile proj;
proj.hit = 0;
set_dir(wolf);
proj.angle_ray = (double)wolf->vect->pov_angle * M_PI / 180.0;
proj.ya = BLOCK * wolf->vect->dir_y;
proj.xa = proj.ya / tan(proj.angle_ray);
wolf->proj->ay = (wolf->vect->dir_y == 1) ? ((int)(wolf->vect->y /
BLOCK) * BLOCK) : (((int)(wolf->vect->y / BLOCK) * BLOCK) + BLOCK);
wolf->proj->ax = wolf->vect->x + (wolf->vect->y - wolf->proj->ay) /
tan(proj.angle_ray);
find_hor(wolf, proj);
}
void find_vert(t_wolf *wolf, t_projectile proj)
{
while (!proj.hit && (wolf->proj->bx) > 0 && (wolf->proj->by) > 0 &&
(wolf->proj->by < (wolf->map->height * BLOCK)) &&
(wolf->proj->bx < (wolf->map->width * BLOCK)))
{
proj.map_x = (wolf->proj->bx) / BLOCK;
proj.map_y = (wolf->proj->by) / BLOCK;
if (wolf->vect->dir_x == -1)
proj.map_x--;
if (wolf->map->i_map[proj.map_y][proj.map_x] > 0)
proj.hit = 1;
else
{
wolf->proj->bx += proj.xa;
wolf->proj->by += -proj.ya;
}
}
}
void proj_vert(t_wolf *wolf)
{
t_projectile proj;
proj.hit = 0;
set_dir(wolf);
proj.angle_ray = (double)wolf->vect->pov_angle * M_PI / 180.0;
proj.xa = BLOCK * wolf->vect->dir_x;
proj.ya = proj.xa * tan(proj.angle_ray);
wolf->proj->bx = (wolf->vect->dir_x == 1) ? (((int)(wolf->vect->x /
BLOCK) * BLOCK) + BLOCK) : ((int)(wolf->vect->x / BLOCK) * BLOCK);
wolf->proj->by = wolf->vect->y +
(wolf->vect->x - wolf->proj->bx) * tan(proj.angle_ray);
find_vert(wolf, proj);
}