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changed all equations of wall height calculation to resolve pixelisation, but dead axis rays re-appeared

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This commit is contained in:
hugogogo
2022-05-01 09:49:41 +02:00
parent 888fa7c116
commit 853fb39c84
3 changed files with 12 additions and 27 deletions
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1
headers/cube3d_struct.h
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@@ -55,7 +55,6 @@ typedef struct s_rcast
int ray_step_y; int ray_step_y;
int is_x; int is_x;
int ray_nb; int ray_nb;
int ray_len;
double ratio; double ratio;
} t_rcast; } t_rcast;

4
maps/map_valid_14.cub
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@@ -8,10 +8,10 @@ F 220 , 100, 30
C 225 , 30 , 0 C 225 , 30 , 0
1111111111111111111111111111 1111111111111111111111111111
1N00000000000000011100000001 1000000000000000011100000001
1111000000000000100000110001 1111000000000000100000110001
1111001000000000000110000111 1111001000000000000110000111
1000000000000000010101000001 100000000N000000010101000001
1111110000000000000000001111 1111110000000000000000001111
1000000000000000000000000001 1000000000000000000000000001
1000000000000000000000000001 1000000000000000000000000001

34
srcs/draw/raycast.c
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@@ -30,36 +30,23 @@
} }
// tmp end // tmp end
static void wall_length(t_rcast *rcast) static void wall_height(t_rcast *rcast)
{ {
int len; int height;
int delta;
rcast->wall.start.x = rcast->ray_nb; rcast->wall.start.x = rcast->ray_nb;
rcast->wall.end.x = rcast->ray_nb; rcast->wall.end.x = rcast->ray_nb;
if (rcast->is_x == 1) if (rcast->is_x == 1)
{ delta = rcast->next_x - rcast->ray_step_x;
len = rcast->next_x - rcast->ray_step_x;
if (rcast->slope_y)
len /= rcast->slope_y;
len = rcast->screen_dist * len / rcast->slope_x;
}
else if (rcast->is_x == 0) else if (rcast->is_x == 0)
{ delta = rcast->next_y - rcast->ray_step_y;
len = rcast->next_y - rcast->ray_step_y;
if (rcast->slope_x)
len /= rcast->slope_x;
len = rcast->screen_dist * len / rcast->slope_y;
}
rcast->ray_len = ft_abs(len);
}
static void wall_height(t_rcast *rcast)
{
int height;
height = rcast->screen_height * rcast->cell; height = rcast->screen_height * rcast->cell;
if (rcast->ray_len) height *= rcast->slope_y * rcast->slope_x;
height /= rcast->ray_len; if (delta && rcast->screen_dist)
height /= (delta * rcast->screen_dist);
height = ft_abs(height);
if (height < 0) if (height < 0)
height = 0; height = 0;
if (height > rcast->screen_height) if (height > rcast->screen_height)
@@ -107,7 +94,6 @@ void raycast(t_game *game, t_rcast *rcast)
draw_line(&game->map_img, &ray, 0x00FF00FF); draw_line(&game->map_img, &ray, 0x00FF00FF);
// tmp end // tmp end
wall_length(rcast);
wall_height(rcast); wall_height(rcast);
draw_column(game, rcast); draw_column(game, rcast);
(rcast->ray_nb)++; (rcast->ray_nb)++;