Restore support for minimal 3x3 autotile sets

editor/plugins/tile_set_editor_plugin.cpp

@@ -667,7 +667,7 @@ void TileSetEditor::_on_workspace_draw() {
 							if (mask & TileSet::BIND_BOTTOMRIGHT) {
 								workspace->draw_rect(Rect2(anchor + size / 2, size / 2), c);
 							}
-						} else if (tileset->autotile_get_bitmask_mode(get_current_tile()) == TileSet::BITMASK_3X3) {
+						} else {
 							if (mask & TileSet::BIND_TOPLEFT) {
 								workspace->draw_rect(Rect2(anchor, size / 3), c);
 							}
@@ -821,7 +821,7 @@ void TileSetEditor::_on_workspace_input(const Ref<InputEvent> &p_ie) {
 										bit = TileSet::BIND_BOTTOMRIGHT;
 									}
 								}
-							} else if (tileset->autotile_get_bitmask_mode(get_current_tile()) == TileSet::BITMASK_3X3) {
+							} else {
 								if (pos.x < size.x / 3) {
 									if (pos.y < size.y / 3) {
 										bit = TileSet::BIND_TOPLEFT;
@@ -884,7 +884,7 @@ void TileSetEditor::_on_workspace_input(const Ref<InputEvent> &p_ie) {
 									bit = TileSet::BIND_BOTTOMRIGHT;
 								}
 							}
-						} else if (tileset->autotile_get_bitmask_mode(get_current_tile()) == TileSet::BITMASK_3X3) {
+						} else {
 							if (pos.x < size.x / 3) {
 								if (pos.y < size.y / 3) {
 									bit = TileSet::BIND_TOPLEFT;
@@ -1849,7 +1849,7 @@ void TileSetEditorHelper::_get_property_list(List<PropertyInfo> *p_list) const {
 	if (selected_tile < 0 || tileset.is_null())
 		return;
 
-	p_list->push_back(PropertyInfo(Variant::INT, "bitmask_mode", PROPERTY_HINT_ENUM, "2x2,3x3"));
+	p_list->push_back(PropertyInfo(Variant::INT, "bitmask_mode", PROPERTY_HINT_ENUM, "2x2,3x3 (minimal),3x3"));
 	p_list->push_back(PropertyInfo(Variant::VECTOR2, "layout/tile_size"));
 	p_list->push_back(PropertyInfo(Variant::INT, "layout/spacing", PROPERTY_HINT_RANGE, "0,256,1"));
 }

scene/2d/tile_map.cpp

@@ -845,16 +845,37 @@ void TileMap::update_cell_bitmask(int p_x, int p_y) {
 				if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y))) {
 					mask |= TileSet::BIND_BOTTOMRIGHT;
 				}
-			} else if (tile_set->autotile_get_bitmask_mode(id) == TileSet::BITMASK_3X3) {
-				if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y - 1))) {
-					mask |= TileSet::BIND_TOPLEFT;
+			} else {
+				if (tile_set->autotile_get_bitmask_mode(id) == TileSet::BITMASK_3X3_MINIMAL) {
+					if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y - 1)) && tile_set->is_tile_bound(id, get_cell(p_x, p_y - 1)) && tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y))) {
+						mask |= TileSet::BIND_TOPLEFT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y - 1)) && tile_set->is_tile_bound(id, get_cell(p_x, p_y - 1)) && tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y))) {
+						mask |= TileSet::BIND_TOPRIGHT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y))) {
+						mask |= TileSet::BIND_BOTTOMLEFT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x, p_y + 1)) && tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y))) {
+						mask |= TileSet::BIND_BOTTOMRIGHT;
+					}
+				} else {
+					if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y - 1))) {
+						mask |= TileSet::BIND_TOPLEFT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y - 1))) {
+						mask |= TileSet::BIND_TOPRIGHT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y + 1))) {
+						mask |= TileSet::BIND_BOTTOMLEFT;
+					}
+					if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y + 1))) {
+						mask |= TileSet::BIND_BOTTOMRIGHT;
+					}
 				}
 				if (tile_set->is_tile_bound(id, get_cell(p_x, p_y - 1))) {
 					mask |= TileSet::BIND_TOP;
 				}
-				if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y - 1))) {
-					mask |= TileSet::BIND_TOPRIGHT;
-				}
 				if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y))) {
 					mask |= TileSet::BIND_LEFT;
 				}
@@ -862,15 +883,9 @@ void TileMap::update_cell_bitmask(int p_x, int p_y) {
 				if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y))) {
 					mask |= TileSet::BIND_RIGHT;
 				}
-				if (tile_set->is_tile_bound(id, get_cell(p_x - 1, p_y + 1))) {
-					mask |= TileSet::BIND_BOTTOMLEFT;
-				}
 				if (tile_set->is_tile_bound(id, get_cell(p_x, p_y + 1))) {
 					mask |= TileSet::BIND_BOTTOM;
 				}
-				if (tile_set->is_tile_bound(id, get_cell(p_x + 1, p_y + 1))) {
-					mask |= TileSet::BIND_BOTTOMRIGHT;
-				}
 			}
 			Vector2 coord = tile_set->autotile_get_subtile_for_bitmask(id, mask, this, Vector2(p_x, p_y));
 			E->get().autotile_coord_x = (int)coord.x;

scene/resources/tile_set.cpp

@@ -264,7 +264,7 @@ void TileSet::_get_property_list(List<PropertyInfo> *p_list) const {
 		p_list->push_back(PropertyInfo(Variant::RECT2, pre + "region"));
 		p_list->push_back(PropertyInfo(Variant::INT, pre + "tile_mode", PROPERTY_HINT_ENUM, "SINGLE_TILE,AUTO_TILE"));
 		if (tile_get_tile_mode(id) == AUTO_TILE) {
-			p_list->push_back(PropertyInfo(Variant::INT, pre + "autotile/bitmask_mode", PROPERTY_HINT_ENUM, "2X2,3X3", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
+			p_list->push_back(PropertyInfo(Variant::INT, pre + "autotile/bitmask_mode", PROPERTY_HINT_ENUM, "2X2,3X3 (minimal),3X3", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/bitmask_flags", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 			p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "autotile/icon_coordinate", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
 			p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "autotile/tile_size", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL));
@@ -960,6 +960,7 @@ void TileSet::_bind_methods() {
 	BIND_VMETHOD(MethodInfo(Variant::VECTOR2, "_forward_subtile_selection", PropertyInfo(Variant::INT, "autotile_id"), PropertyInfo(Variant::INT, "bitmask"), PropertyInfo(Variant::OBJECT, "tilemap", PROPERTY_HINT_NONE, "TileMap"), PropertyInfo(Variant::VECTOR2, "tile_location")));
 
 	BIND_ENUM_CONSTANT(BITMASK_2X2);
+	BIND_ENUM_CONSTANT(BITMASK_3X3_MINIMAL);
 	BIND_ENUM_CONSTANT(BITMASK_3X3);
 
 	BIND_ENUM_CONSTANT(BIND_TOPLEFT);

scene/resources/tile_set.h

@@ -56,6 +56,7 @@ public:
 
 	enum BitmaskMode {
 		BITMASK_2X2,
+		BITMASK_3X3_MINIMAL,
 		BITMASK_3X3
 	};