diff options
Diffstat (limited to 'src/ft_raycasting.c')
| -rw-r--r-- | src/ft_raycasting.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/ft_raycasting.c b/src/ft_raycasting.c index dd2be64..dd68cd3 100644 --- a/src/ft_raycasting.c +++ b/src/ft_raycasting.c @@ -13,9 +13,35 @@ #include <libft.h> #include <cub3d.h> #include <stdint.h> +#include <stdlib.h> #include <math.h> void + ft_calc_sprite(t_cub *cl) +{ + cl->sp_list.s_x = cl->sp_list.s_pos_x - cl->plist->pos_x; + cl->sp_list.s_y = cl->sp_list.s_pos_y - cl->plist->pos_y; + cl->sp_list.inv_c_m = 1.0 / (cl->plist->plane_x * cl->plist->dir_x - cl->plist->dir_y * cl->plist->plane_y); + cl->sp_list.sprite_transform_x = cl->sp_list.inv_c_m * (cl->plist->dir_y * cl->sp_list.s_x - cl->plist->dir_x * cl->sp_list.s_y); + cl->sp_list.sprite_transform_y = cl->sp_list.inv_c_m * (cl->plist->plane_y * cl->sp_list.s_x - cl->plist->plane_x * cl->sp_list.s_y); + cl->sp_list.s_screen_x = (int)((cl->wlist->y_size / 2) * (1 + cl->sp_list.sprite_transform_x / cl->sp_list.sprite_transform_y)); + cl->sp_list.s_h = abs((int)(cl->wlist->y_size * cl->sp_list.sprite_transform_y)); /*sprite height*/ + cl->sp_list.s_start_y = -cl->sp_list.s_h / 2 + cl->wlist->y_size / 2; + if (cl->sp_list.s_start_y < 0) + cl->sp_list.s_start_y = 0; + cl->sp_list.s_end_y = cl->sp_list.s_h / 2 + cl->wlist->y_size / 2; + if (cl->sp_list.s_end_y > (int)cl->wlist->y_size) + cl->sp_list.s_end_y = cl->wlist->y_size - 1;; + cl->sp_list.s_w = abs((int)(cl->wlist->x_size * cl->sp_list.sprite_transform_y)); /*sprite width*/ + cl->sp_list.s_start_x = -cl->sp_list.s_w / 2 + cl->sp_list.s_screen_x; + if (cl->sp_list.s_start_x < 0) + cl->sp_list.s_start_y = 0; + cl->sp_list.s_end_x = cl->sp_list.s_w / 2 + cl->wlist->x_size; + if (cl->sp_list.s_end_x < (int)cl->wlist->x_size) + cl->sp_list.s_end_x = cl->wlist->x_size - 1; +} + +static void ft_calc_tex(t_cub *clist) { if (clist->rlist.side == 0) @@ -24,7 +50,7 @@ void else clist->rlist.wall_hit_x = (clist->plist->pos_y) + clist->rlist.wall_dist * clist->rlist.x_ray_dir; - clist->rlist.wall_hit_x -= floor(clist->rlist.wall_hit_x); + clist->rlist.wall_hit_x -= floor(clist->rlist.wall_hit_x); clist->tlist[clist->w_side].tex_x = (int)(clist->rlist.wall_hit_x * (double)clist->tlist[clist->w_side].img_w); if (clist->rlist.side == 0 && clist->rlist.x_ray_dir > 0) @@ -83,7 +109,9 @@ void cl->rlist.wall_b = wl->y_size - 1; ft_choose_tex(cl); ft_calc_tex(cl); + ft_calc_sprite(cl); ft_draw_verline(cl, i, cl->rlist.wall_t, cl->rlist.wall_b); + ft_draw_sprite(cl , i); i++; } } |