Add z-index to ATLAS_TILE

scene/2d/tile_map.cpp

@@ -327,7 +327,8 @@ void TileMap::update_dirty_quadrants() {
 			Ref<ShaderMaterial> mat = tile_set->tile_get_material(c.id);
 			int z_index = tile_set->tile_get_z_index(c.id);
 
-			if (tile_set->tile_get_tile_mode(c.id) == TileSet::AUTO_TILE) {
+			if (tile_set->tile_get_tile_mode(c.id) == TileSet::AUTO_TILE ||
+					tile_set->tile_get_tile_mode(c.id) == TileSet::ATLAS_TILE) {
 				z_index += tile_set->autotile_get_z_index(c.id, Vector2(c.autotile_coord_x, c.autotile_coord_y));
 			}
 

scene/resources/tile_set.cpp

@@ -314,6 +314,7 @@ void TileSet::_get_property_list(List<PropertyInfo> *p_list) const {
 			p_list->push_back(PropertyInfo(Variant::INT, pre + "autotile/spacing", PROPERTY_HINT_RANGE, "0,256,1", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/occluder_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/navpoly_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
+			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/z_index_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 		}
 		p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "occluder_offset"));
 		p_list->push_back(PropertyInfo(Variant::OBJECT, pre + "occluder", PROPERTY_HINT_RESOURCE_TYPE, "OccluderPolygon2D"));