Prior to deleting the TileMap to see if I can just replace it with new features in Map and textures::.

raycaster.cpp

@@ -383,6 +383,8 @@ void Raycaster::draw_ceiling_floor() {
       int map_y = int(floor_y);
       int light_level = matrix::inbounds(lights, map_x, map_y) ? lights[map_y][map_x] : 30;
 
+      // NOTE: use map_x/y to get the floor, ceiling texture.
+
       // FLOOR
       color = $floor_texture[texture_width * ty + tx];
       $pixels[pixcoord(x, y)] = lighting_calc(color, row_distance, light_level);