Tweak raycaster wall and floor colors

maximecb · Oct 10, 2023 · a278895 · a278895
1 parent abe293c
commit a278895
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Showing 2 changed files with 14 additions and 8 deletions.
diff --git a/ncc/examples/3dcube.c b/ncc/examples/3dcube.c
@@ -145,8 +145,8 @@ int main()
         persp
     );
 
+    // Translation matrix for the cube
     mat44_translate(cube_pos, trans);
 
-
     return 0;
 }
diff --git a/ncc/examples/raycaster.c b/ncc/examples/raycaster.c
@@ -194,17 +194,23 @@ void paint_column(int col_idx, float dx, float dy, float frame_dst, float ray_ds
 
     //printf("wall_top=%f, wall_bot=%f\n", wall_top, wall_bot);
 
-    // TODO: optimize this loop
-    for (int y = 0; y < FRAME_HEIGHT; ++y)
+    // Paint the ceiling
+    for (int y = 0; y < wall_min_y; ++y)
     {
-        if (y < wall_min_y || y > wall_max_y)
-        {
-            frame_buffer[y][col_idx] = COLOR_BLUE;
-            continue;
-        }
+        frame_buffer[y][col_idx] = rgb32(50, 50, 50);
+    }
 
+    // Paint the wall strip
+    for (int y = wall_min_y; y < wall_max_y; ++y)
+    {
         frame_buffer[y][col_idx] = wall_color;
     }
+
+    // Paint the floor
+    for (int y = wall_max_y; y < FRAME_HEIGHT; ++y)
+    {
+        frame_buffer[y][col_idx] = rgb32(100, 100, 100);
+    }
 }
 
 void anim_callback()