diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ft_draw_sprite.c | 44 | ||||
| -rw-r--r-- | src/ft_raycasting.c | 20 |
2 files changed, 62 insertions, 2 deletions
diff --git a/src/ft_draw_sprite.c b/src/ft_draw_sprite.c new file mode 100644 index 0000000..38c1fd9 --- /dev/null +++ b/src/ft_draw_sprite.c @@ -0,0 +1,44 @@ +#include <libft.h> +#include <cub3d.h> +#include <stdint.h> +#include <stdlib.h> +#include <math.h> + +void +ft_draw_verline_sprite(t_cub *cl, int x, int y, int tex_y) +{ + cl->img.ptr[x * 4 + (cl->img.sizeline * y)] = + (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 * + cl->tlist[cl->w_side].img_h * tex_y]; + cl->img.ptr[x * 4 + (cl->img.sizeline * y) + 1] = + (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 * + cl->tlist[cl->w_side].img_h * tex_y + 1]; + cl->img.ptr[x * 4 + (cl->img.sizeline * y) + 2] = + (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 * + cl->tlist[cl->w_side].img_h * tex_y + 2]; + cl->img.ptr[x * 4 + cl->wlist->x_size * y + 3] = (char)0; +} + +void +ft_draw_sprite(t_cub *cl, int x) +{ + int ver_it;/*stripe*/ + int hor_it;/*y*/ + int tex_x; + int tex_y; + int d; + + ver_it = cl->sp_list.s_start_x; + while (ver_it < cl->sp_list.s_end_x) + { + tex_x = (int)(256 * (ver_it - (-cl->sp_list.s_w / 2 + cl->sp_list.s_screen_x)) * cl->tlist[4].img_w / cl->sp_list.s_w) / 256; + hor_it = cl->sp_list.s_start_y; + while (hor_it < cl->sp_list.s_end_y) + { + d = hor_it * 256 - cl->wlist->y_size * 128 + cl->sp_list.s_h * 128; + tex_y = ((d * cl->tlist[4].img_h) / cl->sp_list.s_h) / 256; + ft_draw_verline_sprite(cl, x, hor_it, tex_y); + } + ver_it++; + } +} diff --git a/src/ft_raycasting.c b/src/ft_raycasting.c index 589d2da..b42e0b7 100644 --- a/src/ft_raycasting.c +++ b/src/ft_raycasting.c @@ -13,6 +13,7 @@ #include <libft.h> #include <cub3d.h> #include <stdint.h> +#include <stdlib.h> #include <math.h> void @@ -23,7 +24,21 @@ void 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 @@ -35,7 +50,7 @@ static 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) @@ -95,6 +110,7 @@ void ft_choose_tex(cl); ft_calc_tex(cl); ft_calc_sprite(cl); + ft_draw_sprite(cl , i); ft_draw_verline(cl, i, cl->rlist.wall_t, cl->rlist.wall_b); i++; } |