Implement auto-tiling

editor/plugins/spatial_editor_plugin.cpp

@@ -4572,9 +4572,9 @@ VSplitContainer *SpatialEditor::get_shader_split() {
 	return shader_split;
 }
 
-HSplitContainer *SpatialEditor::get_palette_split() {
+HBoxContainer *SpatialEditor::get_palette_split() {
 
-	return palette_split;
+	return palette_split_container;
 }
 
 void SpatialEditor::_request_gizmo(Object *p_obj) {
@@ -4851,6 +4851,10 @@ SpatialEditor::SpatialEditor(EditorNode *p_editor) {
 	palette_split->set_v_size_flags(SIZE_EXPAND_FILL);
 	vbc->add_child(palette_split);
 
+	palette_split_container = memnew(HBoxContainer);
+	palette_split_container->set_v_size_flags(SIZE_EXPAND_FILL);
+	palette_split->add_child(palette_split_container);
+
 	shader_split = memnew(VSplitContainer);
 	shader_split->set_h_size_flags(SIZE_EXPAND_FILL);
 	palette_split->add_child(shader_split);

editor/plugins/spatial_editor_plugin.h

@@ -405,6 +405,7 @@ private:
 	SpatialEditorViewport *viewports[VIEWPORTS_COUNT];
 	VSplitContainer *shader_split;
 	HSplitContainer *palette_split;
+	HBoxContainer *palette_split_container;
 
 	/////
 
@@ -593,7 +594,7 @@ public:
 	void add_control_to_menu_panel(Control *p_control);
 
 	VSplitContainer *get_shader_split();
-	HSplitContainer *get_palette_split();
+	HBoxContainer *get_palette_split();
 
 	Spatial *get_selected() { return selected; }
 

editor/plugins/tile_map_editor_plugin.cpp

@@ -187,10 +187,13 @@ void TileMapEditor::_set_cell(const Point2i &p_pos, int p_value, bool p_flip_h,
 	if (p_with_undo) {
 
 		undo_redo->add_do_method(node, "set_cellv", Point2(p_pos), p_value, p_flip_h, p_flip_v, p_transpose);
+		undo_redo->add_do_method(node, "make_bitmask_area_dirty", Point2(p_pos));
 		undo_redo->add_undo_method(node, "set_cellv", Point2(p_pos), prev_val, prev_flip_h, prev_flip_v, prev_transpose);
+		undo_redo->add_undo_method(node, "make_bitmask_area_dirty", Point2(p_pos));
 	} else {
 
 		node->set_cell(p_pos.x, p_pos.y, p_value, p_flip_h, p_flip_v, p_transpose);
+		node->update_bitmask_area(Point2(p_pos));
 	}
 }
 
@@ -306,6 +309,12 @@ void TileMapEditor::_update_palette() {
 		if (tex.is_valid()) {
 			Rect2 region = tileset->tile_get_region(entries[i].id);
 
+			if (tileset->tile_get_is_autotile(entries[i].id)) {
+				int spacing = tileset->autotile_get_spacing(entries[i].id);
+				region.size = tileset->autotile_get_size(entries[i].id);
+				region.position += (region.size + Vector2(spacing, spacing)) * tileset->autotile_get_icon_coordinate(entries[i].id);
+			}
+
 			if (!region.has_no_area())
 				palette->set_item_icon_region(palette->get_item_count() - 1, region);
 
@@ -499,6 +508,11 @@ void TileMapEditor::_draw_cell(int p_cell, const Point2i &p_point, bool p_flip_h
 	Vector2 tile_ofs = node->get_tileset()->tile_get_texture_offset(p_cell);
 
 	Rect2 r = node->get_tileset()->tile_get_region(p_cell);
+	if (node->get_tileset()->tile_get_is_autotile(p_cell)) {
+		int spacing = node->get_tileset()->autotile_get_spacing(p_cell);
+		r.size = node->get_tileset()->autotile_get_size(p_cell);
+		r.position += (r.size + Vector2(spacing, spacing)) * node->get_tileset()->autotile_get_icon_coordinate(p_cell);
+	}
 	Size2 sc = p_xform.get_scale();
 
 	Rect2 rect = Rect2();

editor/plugins/tile_map_editor_plugin.h

@@ -137,6 +137,8 @@ class TileMapEditor : public VBoxContainer {
 		bool flip_h;
 		bool flip_v;
 		bool transpose;
+		int auto_x;
+		int auto_y;
 	};
 
 	List<TileData> copydata;

editor/plugins/tile_set_editor_plugin.h

@@ -32,10 +32,126 @@
 
 #include "editor/editor_name_dialog.h"
 #include "editor/editor_node.h"
+#include "scene/2d/sprite.h"
+#include "scene/resources/concave_polygon_shape_2d.h"
 #include "scene/resources/tile_set.h"
 
+class AutotileEditorHelper;
+class AutotileEditor : public Control {
+
+	friend class TileSetEditorPlugin;
+	friend class AutotileEditorHelper;
+	GDCLASS(AutotileEditor, Control);
+
+	enum EditMode {
+		EDITMODE_ICON,
+		EDITMODE_BITMASK,
+		EDITMODE_COLLISION,
+		EDITMODE_OCCLUSION,
+		EDITMODE_NAVIGATION,
+		EDITMODE_PRIORITY,
+		EDITMODE_MAX
+	};
+
+	enum AutotileToolbars {
+		TOOLBAR_DUMMY,
+		TOOLBAR_BITMASK,
+		TOOLBAR_SHAPE,
+		TOOLBAR_MAX
+	};
+
+	enum AutotileTools {
+		TOOL_SELECT,
+		BITMASK_COPY,
+		BITMASK_PASTE,
+		BITMASK_CLEAR,
+		SHAPE_NEW_POLYGON,
+		SHAPE_DELETE,
+		SHAPE_CREATE_FROM_BITMASK,
+		SHAPE_CREATE_FROM_NOT_BITMASK,
+		SHAPE_KEEP_INSIDE_TILE,
+		SHAPE_SNAP_TO_BITMASK_GRID,
+		ZOOM_OUT,
+		ZOOM_1,
+		ZOOM_IN,
+		TOOL_MAX
+	};
+
+	Ref<TileSet> tile_set;
+	Ref<ConcavePolygonShape2D> edited_collision_shape;
+	Ref<OccluderPolygon2D> edited_occlusion_shape;
+	Ref<NavigationPolygon> edited_navigation_shape;
+
+	EditorNode *editor;
+
+	int current_item_index;
+	Sprite *preview;
+	Control *workspace_container;
+	Control *workspace;
+	Button *tool_editmode[EDITMODE_MAX];
+	HBoxContainer *tool_containers[TOOLBAR_MAX];
+	HBoxContainer *toolbar;
+	ToolButton *tools[TOOL_MAX];
+	SpinBox *spin_priority;
+	EditMode edit_mode;
+
+	bool creating_shape;
+	int dragging_point;
+	Vector2 edited_shape_coord;
+	PoolVector2Array current_shape;
+	Map<Vector2, uint16_t> bitmask_map_copy;
+
+	Control *side_panel;
+	ItemList *autotile_list;
+	PropertyEditor *property_editor;
+	AutotileEditorHelper *helper;
+
+	AutotileEditor(EditorNode *p_editor);
+
+protected:
+	static void _bind_methods();
+	void _notification(int p_what);
+
+private:
+	void _on_autotile_selected(int p_index);
+	void _on_edit_mode_changed(int p_edit_mode);
+	void _on_workspace_draw();
+	void _on_workspace_input(const Ref<InputEvent> &p_ie);
+	void _on_tool_clicked(int p_tool);
+	void _on_priority_changed(float val);
+
+	void draw_highlight_tile(Vector2 coord, const Vector<Vector2> &other_highlighted = Vector<Vector2>());
+	void draw_grid(const Vector2 &size, int spacing);
+	void draw_polygon_shapes();
+	void close_shape(const Vector2 &shape_anchor);
+	Vector2 snap_point(const Vector2 &point);
+
+	void edit(Object *p_node);
+	int get_current_tile();
+};
+
+class AutotileEditorHelper : public Object {
+
+	friend class AutotileEditor;
+	GDCLASS(AutotileEditorHelper, Object);
+
+	Ref<TileSet> tile_set;
+	AutotileEditor *autotile_editor;
+
+public:
+	void set_tileset(const Ref<TileSet> &p_tileset);
+
+protected:
+	bool _set(const StringName &p_name, const Variant &p_value);
+	bool _get(const StringName &p_name, Variant &r_ret) const;
+	void _get_property_list(List<PropertyInfo> *p_list) const;
+
+	AutotileEditorHelper(AutotileEditor *p_autotile_editor);
+};
+
 class TileSetEditor : public Control {
 
+	friend class TileSetEditorPlugin;
 	GDCLASS(TileSetEditor, Control);
 
 	Ref<TileSet> tileset;
@@ -77,8 +193,11 @@ class TileSetEditorPlugin : public EditorPlugin {
 	GDCLASS(TileSetEditorPlugin, EditorPlugin);
 
 	TileSetEditor *tileset_editor;
+	AutotileEditor *autotile_editor;
 	EditorNode *editor;
 
+	ToolButton *autotile_button;
+
 public:
 	virtual String get_name() const { return "TileSet"; }
 	bool has_main_screen() const { return false; }

scene/2d/tile_map.cpp

@@ -365,6 +365,11 @@ void TileMap::_update_dirty_quadrants() {
 			}
 
 			Rect2 r = tile_set->tile_get_region(c.id);
+			if (tile_set->tile_get_is_autotile(c.id)) {
+				int spacing = tile_set->autotile_get_spacing(c.id);
+				r.size = tile_set->autotile_get_size(c.id);
+				r.position += (r.size + Vector2(spacing, spacing)) * Vector2(c.autotile_coord_x, c.autotile_coord_y);
+			}
 			Size2 s = tex->get_size();
 
 			if (r == Rect2())
@@ -456,6 +461,7 @@ void TileMap::_update_dirty_quadrants() {
 			for (int i = 0; i < shapes.size(); i++) {
 				Ref<Shape2D> shape = shapes[i].shape;
 				if (shape.is_valid()) {
+					if (!tile_set->tile_get_is_autotile(c.id) || (shapes[i].autotile_coord.x == c.autotile_coord_x && shapes[i].autotile_coord.y == c.autotile_coord_y)) {
 						Transform2D xform;
 						xform.set_origin(offset.floor());
 
@@ -473,15 +479,24 @@ void TileMap::_update_dirty_quadrants() {
 						shape_idx++;
 					}
 				}
+			}
 
 			if (debug_canvas_item.is_valid()) {
 				vs->canvas_item_add_set_transform(debug_canvas_item, Transform2D());
 			}
 
 			if (navigation) {
-				Ref<NavigationPolygon> navpoly = tile_set->tile_get_navigation_polygon(c.id);
+				Ref<NavigationPolygon> navpoly;
+				Vector2 npoly_ofs;
+				if (tile_set->tile_get_is_autotile(c.id)) {
+					navpoly = tile_set->autotile_get_navigation_polygon(c.id, Vector2(c.autotile_coord_x, c.autotile_coord_y));
+					npoly_ofs = Vector2();
+				} else {
+					navpoly = tile_set->tile_get_navigation_polygon(c.id);
+					npoly_ofs = tile_set->tile_get_navigation_polygon_offset(c.id);
+				}
+
 				if (navpoly.is_valid()) {
-					Vector2 npoly_ofs = tile_set->tile_get_navigation_polygon_offset(c.id);
 					Transform2D xform;
 					xform.set_origin(offset.floor() + q.pos);
 					_fix_cell_transform(xform, c, npoly_ofs + center_ofs, s);
@@ -495,10 +510,17 @@ void TileMap::_update_dirty_quadrants() {
 				}
 			}
 
-			Ref<OccluderPolygon2D> occluder = tile_set->tile_get_light_occluder(c.id);
+			Ref<OccluderPolygon2D> occluder;
+			Vector2 occluder_ofs;
+			if (tile_set->tile_get_is_autotile(c.id)) {
+				occluder = tile_set->autotile_get_light_occluder(c.id, Vector2(c.autotile_coord_x, c.autotile_coord_y));
+				occluder_ofs = tile_set->tile_get_occluder_offset(c.id);
+			} else {
+				occluder = tile_set->tile_get_light_occluder(c.id);
+				occluder_ofs = Vector2();
+			}
 			if (occluder.is_valid()) {
 
-				Vector2 occluder_ofs = tile_set->tile_get_occluder_offset(c.id);
 				Transform2D xform;
 				xform.set_origin(offset.floor() + q.pos);
 				_fix_cell_transform(xform, c, occluder_ofs + center_ofs, s);
@@ -656,7 +678,7 @@ void TileMap::set_cellv(const Vector2 &p_pos, int p_tile, bool p_flip_x, bool p_
 	set_cell(p_pos.x, p_pos.y, p_tile, p_flip_x, p_flip_y, p_transpose);
 }
 
-void TileMap::set_cell(int p_x, int p_y, int p_tile, bool p_flip_x, bool p_flip_y, bool p_transpose) {
+void TileMap::set_cell(int p_x, int p_y, int p_tile, bool p_flip_x, bool p_flip_y, bool p_transpose, Vector2 p_autotile_coord) {
 
 	PosKey pk(p_x, p_y);
 
@@ -702,15 +724,105 @@ void TileMap::set_cell(int p_x, int p_y, int p_tile, bool p_flip_x, bool p_flip_
 	c.flip_h = p_flip_x;
 	c.flip_v = p_flip_y;
 	c.transpose = p_transpose;
+	c.autotile_coord_x = (uint16_t)p_autotile_coord.x;
+	c.autotile_coord_y = (uint16_t)p_autotile_coord.y;
 
 	_make_quadrant_dirty(Q);
 	used_size_cache_dirty = true;
 }
 
 int TileMap::get_cellv(const Vector2 &p_pos) const {
+
 	return get_cell(p_pos.x, p_pos.y);
 }
 
+void TileMap::make_bitmask_area_dirty(const Vector2 &p_pos) {
+
+	for (int x = p_pos.x - 1; x <= p_pos.x + 1; x++) {
+		for (int y = p_pos.y - 1; x <= p_pos.y + 1; y++) {
+			PosKey p(x, y);
+			if (dirty_bitmask.find(p) == NULL) {
+				dirty_bitmask.push_back(p);
+			}
+		}
+	}
+}
+
+void TileMap::update_bitmask_area(const Vector2 &p_pos) {
+
+	for (int x = p_pos.x - 1; x <= p_pos.x + 1; x++) {
+		for (int y = p_pos.y - 1; y <= p_pos.y + 1; y++) {
+			update_cell_bitmask(x, y);
+		}
+	}
+}
+
+void TileMap::update_cell_bitmask(int p_x, int p_y) {
+
+	PosKey p(p_x, p_y);
+	Map<PosKey, Cell>::Element *E = tile_map.find(p);
+	if (E != NULL) {
+		int id = get_cell(p_x, p_y);
+		if (tile_set->tile_get_is_autotile(id)) {
+			uint16_t mask = 0;
+			if (tile_set->autotile_get_bitmask_mode(id) == TileSet::BITMASK_2X2) {
+				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->autotile_get_bitmask_mode(id) == TileSet::BITMASK_3X3) {
+				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, p_y - 1))) {
+					mask |= TileSet::BIND_TOP;
+				}
+				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))) {
+					mask |= TileSet::BIND_LEFT;
+				}
+				mask |= TileSet::BIND_CENTER;
+				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)) && 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, p_y + 1))) {
+					mask |= TileSet::BIND_BOTTOM;
+				}
+				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;
+				}
+			}
+			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;
+			E->get().autotile_coord_y = (int)coord.y;
+		} else {
+			E->get().autotile_coord_x = 0;
+			E->get().autotile_coord_y = 0;
+		}
+	}
+}
+
+void TileMap::update_dirty_bitmask() {
+
+	while (dirty_bitmask.size() > 0) {
+		update_cell_bitmask(dirty_bitmask[0].x, dirty_bitmask[0].y);
+		dirty_bitmask.pop_front();
+	}
+}
+
 int TileMap::get_cell(int p_x, int p_y) const {
 
 	PosKey pk(p_x, p_y);
@@ -756,6 +868,30 @@ bool TileMap::is_cell_transposed(int p_x, int p_y) const {
 	return E->get().transpose;
 }
 
+int TileMap::get_cell_autotile_coord_x(int p_x, int p_y) const {
+
+	PosKey pk(p_x, p_y);
+
+	const Map<PosKey, Cell>::Element *E = tile_map.find(pk);
+
+	if (!E)
+		return 0;
+
+	return E->get().autotile_coord_x;
+}
+
+int TileMap::get_cell_autotile_coord_y(int p_x, int p_y) const {
+
+	PosKey pk(p_x, p_y);
+
+	const Map<PosKey, Cell>::Element *E = tile_map.find(pk);
+
+	if (!E)
+		return 0;
+
+	return E->get().autotile_coord_y;
+}
+
 void TileMap::_recreate_quadrants() {
 
 	_clear_quadrants();
@@ -823,11 +959,13 @@ void TileMap::_set_tile_data(const PoolVector<int> &p_data) {
 	int c = p_data.size();
 	PoolVector<int>::Read r = p_data.read();
 
-	for (int i = 0; i < c; i += 2) {
+	int offset = (format == FORMAT_2_1_5) ? 3 : 2;
+
+	for (int i = 0; i < c; i += offset) {
 
 		const uint8_t *ptr = (const uint8_t *)&r[i];
-		uint8_t local[8];
+		uint8_t local[12];
-		for (int j = 0; j < 8; j++)
+		for (int j = 0; j < ((format == FORMAT_2_1_5) ? 12 : 8); j++)
 			local[j] = ptr[j];
 
 #ifdef BIG_ENDIAN_ENABLED
@@ -836,6 +974,11 @@ void TileMap::_set_tile_data(const PoolVector<int> &p_data) {
 		SWAP(local[1], local[2]);
 		SWAP(local[4], local[7]);
 		SWAP(local[5], local[6]);
+		//TODO: ask someone to check this...
+		if (FORMAT == FORMAT_2_1_5) {
+			SWAP(local[8], local[11]);
+			SWAP(local[9], local[10]);
+		}
 #endif
 
 		int16_t x = decode_uint16(&local[0]);
@@ -845,24 +988,28 @@ void TileMap::_set_tile_data(const PoolVector<int> &p_data) {
 		bool flip_v = v & (1 << 30);
 		bool transpose = v & (1 << 31);
 		v &= (1 << 29) - 1;
-
+		int16_t coord_x;
+		int16_t coord_y;
+		if (format == FORMAT_2_1_5) {
+			coord_x = decode_uint16(&local[8]);
+			coord_y = decode_uint16(&local[10]);
+		}
 		/*
 		if (x<-20 || y <-20 || x>4000 || y>4000)
 			continue;
 		*/
-		set_cell(x, y, v, flip_h, flip_v, transpose);
+		set_cell(x, y, v, flip_h, flip_v, transpose, Vector2(coord_x, coord_y));
 	}
 }
 
 PoolVector<int> TileMap::_get_tile_data() const {
 
 	PoolVector<int> data;
-	data.resize(tile_map.size() * 2);
+	data.resize(tile_map.size() * 3);
 	PoolVector<int>::Write w = data.write();
 
 	int idx = 0;
 	for (const Map<PosKey, Cell>::Element *E = tile_map.front(); E; E = E->next()) {
-
 		uint8_t *ptr = (uint8_t *)&w[idx];
 		encode_uint16(E->key().x, &ptr[0]);
 		encode_uint16(E->key().y, &ptr[2]);
@@ -873,9 +1020,10 @@ PoolVector<int> TileMap::_get_tile_data() const {
 			val |= (1 << 30);
 		if (E->get().transpose)
 			val |= (1 << 31);
-
 		encode_uint32(val, &ptr[4]);
-		idx += 2;
+		encode_uint16(E->get().autotile_coord_x, &ptr[8]);
+		encode_uint16(E->get().autotile_coord_y, &ptr[10]);
+		idx += 3;
 	}
 
 	w = PoolVector<int>::Write();
@@ -1119,10 +1267,50 @@ Vector2 TileMap::_map_to_world(int p_x, int p_y, bool p_ignore_ofs) const {
 	}
 	return ret;
 }
+
+bool TileMap::_set(const StringName &p_name, const Variant &p_value) {
+
+	if (p_name == "format") {
+		if (p_value.get_type() == Variant::INT) {
+			format = (DataFormat)(p_value.operator int64_t());
+			return true;
+		}
+	} else if (p_name == "tile_data") {
+		if (p_value.is_array()) {
+			_set_tile_data(p_value);
+			return true;
+		}
+		return false;
+	}
+	return false;
+}
+
+bool TileMap::_get(const StringName &p_name, Variant &r_ret) const {
+
+	if (p_name == "format") {
+		r_ret = FORMAT_2_1_5;
+		return true;
+	} else if (p_name == "tile_data") {
+		r_ret = _get_tile_data();
+		return true;
+	}
+	return false;
+}
+
+void TileMap::_get_property_list(List<PropertyInfo> *p_list) const {
+
+	PropertyInfo p(Variant::INT, "format", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR);
+	p_list->push_back(p);
+
+	p = PropertyInfo(Variant::OBJECT, "tile_data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR);
+	p_list->push_back(p);
+}
+
 Vector2 TileMap::map_to_world(const Vector2 &p_pos, bool p_ignore_ofs) const {
 
 	return _map_to_world(p_pos.x, p_pos.y, p_ignore_ofs);
 }
+
 Vector2 TileMap::world_to_map(const Vector2 &p_pos) const {
 
 	Vector2 ret = get_cell_transform().affine_inverse().xform(p_pos);
@@ -1357,8 +1545,6 @@ void TileMap::_bind_methods() {
 
 	ADD_GROUP("Occluder", "occluder_");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "occluder_light_mask", PROPERTY_HINT_LAYERS_2D_RENDER), "set_occluder_light_mask", "get_occluder_light_mask");
-	ADD_GROUP("", "");
-	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "tile_data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "_set_tile_data", "_get_tile_data");
 
 	ADD_SIGNAL(MethodInfo("settings_changed"));
 
@@ -1398,6 +1584,7 @@ TileMap::TileMap() {
 	y_sort_mode = false;
 	occluder_light_mask = 1;
 	clip_uv = false;
+	format = FORMAT_2_1_4; //Always initialize with the lowest format
 
 	fp_adjust = 0.00001;
 	tile_origin = TILE_ORIGIN_TOP_LEFT;

scene/2d/tile_map.h

@@ -60,6 +60,11 @@ public:
 	};
 
 private:
+	enum DataFormat {
+		FORMAT_2_1_4 = 0,
+		FORMAT_2_1_5
+	};
+
 	Ref<TileSet> tile_set;
 	Size2i cell_size;
 	int quadrant_size;
@@ -81,6 +86,8 @@ private:
 		//using a more precise comparison so the regions can be sorted later
 		bool operator<(const PosKey &p_k) const { return (y == p_k.y) ? x < p_k.x : y < p_k.y; }
 
+		bool operator==(const PosKey &p_k) const { return (y == p_k.y && x == p_k.x); }
+
 		PosKey(int16_t p_x, int16_t p_y) {
 			x = p_x;
 			y = p_y;
@@ -98,13 +105,17 @@ private:
 			bool flip_h : 1;
 			bool flip_v : 1;
 			bool transpose : 1;
+			int16_t autotile_coord_x : 16;
+			int16_t autotile_coord_y : 16;
 		};
 
-		uint32_t _u32t;
+		uint64_t _u64t;
-		Cell() { _u32t = 0; }
+		Cell() { _u64t = 0; }
 	};
 
 	Map<PosKey, Cell> tile_map;
+	List<PosKey> dirty_bitmask;
+
 	struct Quadrant {
 
 		Vector2 pos;
@@ -167,6 +178,7 @@ private:
 	float bounce;
 	uint32_t collision_layer;
 	uint32_t collision_mask;
+	DataFormat format;
 
 	TileOrigin tile_origin;
 
@@ -198,6 +210,10 @@ private:
 	_FORCE_INLINE_ Vector2 _map_to_world(int p_x, int p_y, bool p_ignore_ofs = false) const;
 
 protected:
+	bool _set(const StringName &p_name, const Variant &p_value);
+	bool _get(const StringName &p_name, Variant &r_ret) const;
+	void _get_property_list(List<PropertyInfo> *p_list) const;
+
 	void _notification(int p_what);
 	static void _bind_methods();
 
@@ -220,17 +236,24 @@ public:
 	void set_center_y(bool p_enable);
 	bool get_center_y() const;
 
-	void set_cell(int p_x, int p_y, int p_tile, bool p_flip_x = false, bool p_flip_y = false, bool p_transpose = false);
+	void set_cell(int p_x, int p_y, int p_tile, bool p_flip_x = false, bool p_flip_y = false, bool p_transpose = false, Vector2 p_autotile_coord = Vector2());
 	int get_cell(int p_x, int p_y) const;
 	bool is_cell_x_flipped(int p_x, int p_y) const;
 	bool is_cell_y_flipped(int p_x, int p_y) const;
 	bool is_cell_transposed(int p_x, int p_y) const;
+	int get_cell_autotile_coord_x(int p_x, int p_y) const;
+	int get_cell_autotile_coord_y(int p_x, int p_y) const;
 
 	void set_cellv(const Vector2 &p_pos, int p_tile, bool p_flip_x = false, bool p_flip_y = false, bool p_transpose = false);
 	int get_cellv(const Vector2 &p_pos) const;
 
 	Rect2 _edit_get_rect() const;
 
+	void make_bitmask_area_dirty(const Vector2 &p_pos);
+	void update_bitmask_area(const Vector2 &p_pos);
+	void update_cell_bitmask(int p_x, int p_y);
+	void update_dirty_bitmask();
+
 	void set_collision_layer(uint32_t p_layer);
 	uint32_t get_collision_layer() const;
 

scene/resources/tile_set.cpp

@@ -28,6 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 #include "tile_set.h"
+#include "array.h"
 
 bool TileSet::_set(const StringName &p_name, const Variant &p_value) {
 
@@ -55,7 +56,74 @@ bool TileSet::_set(const StringName &p_name, const Variant &p_value) {
 		tile_set_modulate(id, p_value);
 	else if (what == "region")
 		tile_set_region(id, p_value);
-	else if (what == "shape")
+	else if (what == "is_autotile")
+		tile_set_is_autotile(id, p_value);
+	else if (what.left(9) == "autotile/") {
+		what = what.right(9);
+		if (what == "bitmask_mode")
+			autotile_set_bitmask_mode(id, (BitmaskMode)((int)p_value));
+		else if (what == "icon_coordinate")
+			autotile_set_icon_coordinate(id, p_value);
+		else if (what == "tile_size")
+			autotile_set_size(id, p_value);
+		else if (what == "spacing")
+			autotile_set_spacing(id, p_value);
+		else if (what == "bitmask_flags") {
+			tile_map[id].autotile_data.flags.clear();
+			if (p_value.is_array()) {
+				Array p = p_value;
+				Vector2 last_coord;
+				while (p.size() > 0) {
+					if (p[0].get_type() == Variant::VECTOR2) {
+						last_coord = p[0];
+					} else if (p[0].get_type() == Variant::INT) {
+						autotile_set_bitmask(id, last_coord, p[0]);
+					}
+					p.pop_front();
+				}
+			}
+		} else if (what == "occluder_map") {
+			tile_map[id].autotile_data.ocludder_map.clear();
+			Array p = p_value;
+			Vector2 last_coord;
+			while (p.size() > 0) {
+				if (p[0].get_type() == Variant::VECTOR2) {
+					last_coord = p[0];
+				} else if (p[0].get_type() == Variant::OBJECT) {
+					autotile_set_light_occluder(id, p[0], last_coord);
+				}
+				p.pop_front();
+			}
+		} else if (what == "navpoly_map") {
+			tile_map[id].autotile_data.navpoly_map.clear();
+			Array p = p_value;
+			Vector2 last_coord;
+			while (p.size() > 0) {
+				if (p[0].get_type() == Variant::VECTOR2) {
+					last_coord = p[0];
+				} else if (p[0].get_type() == Variant::OBJECT) {
+					autotile_set_navigation_polygon(id, p[0], last_coord);
+				}
+				p.pop_front();
+			}
+		} else if (what == "priority_map") {
+			tile_map[id].autotile_data.priority_map.clear();
+			Array p = p_value;
+			Vector3 val;
+			Vector2 v;
+			int priority;
+			while (p.size() > 0) {
+				val = p[0];
+				if (val.z > 1) {
+					v.x = val.x;
+					v.y = val.y;
+					priority = (int)val.z;
+					tile_map[id].autotile_data.priority_map[v] = priority;
+				}
+				p.pop_front();
+			}
+		}
+	} else if (what == "shape")
 		tile_set_shape(id, 0, p_value);
 	else if (what == "shape_offset")
 		tile_set_shape_offset(id, 0, p_value);
@@ -105,7 +173,54 @@ bool TileSet::_get(const StringName &p_name, Variant &r_ret) const {
 		r_ret = tile_get_modulate(id);
 	else if (what == "region")
 		r_ret = tile_get_region(id);
-	else if (what == "shape")
+	else if (what == "is_autotile")
+		r_ret = tile_get_is_autotile(id);
+	else if (what.left(9) == "autotile/") {
+		what = what.right(9);
+		if (what == "bitmask_mode")
+			r_ret = autotile_get_bitmask_mode(id);
+		else if (what == "icon_coordinate")
+			r_ret = autotile_get_icon_coordinate(id);
+		else if (what == "tile_size")
+			r_ret = autotile_get_size(id);
+		else if (what == "spacing")
+			r_ret = autotile_get_spacing(id);
+		else if (what == "bitmask_flags") {
+			Array p;
+			for (Map<Vector2, uint16_t>::Element *E = tile_map[id].autotile_data.flags.front(); E; E = E->next()) {
+				p.push_back(E->key());
+				p.push_back(E->value());
+			}
+			r_ret = p;
+		} else if (what == "occluder_map") {
+			Array p;
+			for (Map<Vector2, Ref<OccluderPolygon2D> >::Element *E = tile_map[id].autotile_data.ocludder_map.front(); E; E = E->next()) {
+				p.push_back(E->key());
+				p.push_back(E->value());
+			}
+			r_ret = p;
+		} else if (what == "navpoly_map") {
+			Array p;
+			for (Map<Vector2, Ref<NavigationPolygon> >::Element *E = tile_map[id].autotile_data.navpoly_map.front(); E; E = E->next()) {
+				p.push_back(E->key());
+				p.push_back(E->value());
+			}
+			r_ret = p;
+		} else if (what == "priority_map") {
+			Array p;
+			Vector3 v;
+			for (Map<Vector2, int>::Element *E = tile_map[id].autotile_data.priority_map.front(); E; E = E->next()) {
+				if (E->value() > 1) {
+					//Dont save default value
+					v.x = E->key().x;
+					v.y = E->key().y;
+					v.z = E->value();
+					p.push_back(v);
+				}
+			}
+			r_ret = p;
+		}
+	} else if (what == "shape")
 		r_ret = tile_get_shape(id, 0);
 	else if (what == "shape_offset")
 		r_ret = tile_get_shape_offset(id, 0);
@@ -142,6 +257,17 @@ void TileSet::_get_property_list(List<PropertyInfo> *p_list) const {
 		p_list->push_back(PropertyInfo(Variant::OBJECT, pre + "material", PROPERTY_HINT_RESOURCE_TYPE, "ShaderMaterial"));
 		p_list->push_back(PropertyInfo(Variant::COLOR, pre + "modulate"));
 		p_list->push_back(PropertyInfo(Variant::RECT2, pre + "region"));
+		p_list->push_back(PropertyInfo(Variant::BOOL, pre + "is_autotile", PROPERTY_HINT_NONE, ""));
+		if (tile_get_is_autotile(id)) {
+			p_list->push_back(PropertyInfo(Variant::INT, pre + "autotile/bitmask_mode", PROPERTY_HINT_ENUM, "2X2,3X3", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "autotile/icon_coordinate", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "autotile/tile_size", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::INT, pre + "autotile/spacing", PROPERTY_HINT_RANGE, "0,256,1", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/bitmask_flags", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/occluder_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/navpoly_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+			p_list->push_back(PropertyInfo(Variant::ARRAY, pre + "autotile/priority_map", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR));
+		}
 		p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "occluder_offset"));
 		p_list->push_back(PropertyInfo(Variant::OBJECT, pre + "occluder", PROPERTY_HINT_RESOURCE_TYPE, "OccluderPolygon2D"));
 		p_list->push_back(PropertyInfo(Variant::VECTOR2, pre + "navigation_offset"));
@@ -158,10 +284,25 @@ void TileSet::create_tile(int p_id) {
 
 	ERR_FAIL_COND(tile_map.has(p_id));
 	tile_map[p_id] = TileData();
+	tile_map[p_id].autotile_data = AutotileData();
 	_change_notify("");
 	emit_changed();
 }
 
+void TileSet::autotile_set_bitmask_mode(int p_id, BitmaskMode p_mode) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	tile_map[p_id].autotile_data.bitmask_mode = p_mode;
+	_change_notify("");
+	emit_changed();
+}
+
+TileSet::BitmaskMode TileSet::autotile_get_bitmask_mode(int p_id) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), BITMASK_2X2);
+	return tile_map[p_id].autotile_data.bitmask_mode;
+}
+
 void TileSet::tile_set_texture(int p_id, const Ref<Texture> &p_texture) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
@@ -240,6 +381,152 @@ Rect2 TileSet::tile_get_region(int p_id) const {
 	return tile_map[p_id].region;
 }
 
+void TileSet::tile_set_is_autotile(int p_id, bool p_is_autotile) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	tile_map[p_id].is_autotile = p_is_autotile;
+	_change_notify("");
+	emit_changed();
+}
+
+bool TileSet::tile_get_is_autotile(int p_id) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), false);
+	return tile_map[p_id].is_autotile;
+}
+
+void TileSet::autotile_set_icon_coordinate(int p_id, Vector2 coord) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	tile_map[p_id].autotile_data.icon_coord = coord;
+	emit_changed();
+}
+
+Vector2 TileSet::autotile_get_icon_coordinate(int p_id) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), Vector2());
+	return tile_map[p_id].autotile_data.icon_coord;
+}
+
+void TileSet::autotile_set_spacing(int p_id, int p_spacing) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	ERR_FAIL_COND(p_spacing < 0);
+	tile_map[p_id].autotile_data.spacing = p_spacing;
+	emit_changed();
+}
+
+int TileSet::autotile_get_spacing(int p_id) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), 0);
+	return tile_map[p_id].autotile_data.spacing;
+}
+
+void TileSet::autotile_set_size(int p_id, Size2 p_size) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	ERR_FAIL_COND(p_size.x <= 0 || p_size.y <= 0);
+	tile_map[p_id].autotile_data.size = p_size;
+}
+
+Size2 TileSet::autotile_get_size(int p_id) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), Size2());
+	return tile_map[p_id].autotile_data.size;
+}
+
+void TileSet::autotile_clear_bitmask_map(int p_id) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	tile_map[p_id].autotile_data.flags.clear();
+}
+
+void TileSet::autotile_set_subtile_priority(int p_id, const Vector2 &p_coord, int p_priority) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	ERR_FAIL_COND(p_priority <= 0);
+	tile_map[p_id].autotile_data.priority_map[p_coord] = p_priority;
+}
+
+int TileSet::autotile_get_subtile_priority(int p_id, const Vector2 &p_coord) {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), 1);
+	if (tile_map[p_id].autotile_data.priority_map.has(p_coord)) {
+		return tile_map[p_id].autotile_data.priority_map[p_coord];
+	}
+	//When not custom priority set return the default value
+	return 1;
+}
+
+const Map<Vector2, int> &TileSet::autotile_get_priority_map(int p_id) const {
+
+	static Map<Vector2, int> dummy;
+	ERR_FAIL_COND_V(!tile_map.has(p_id), dummy);
+	return tile_map[p_id].autotile_data.priority_map;
+}
+
+void TileSet::autotile_set_bitmask(int p_id, Vector2 p_coord, uint16_t p_flag) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	if (p_flag == 0) {
+		if (tile_map[p_id].autotile_data.flags.has(p_coord))
+			tile_map[p_id].autotile_data.flags.erase(p_coord);
+	} else {
+		tile_map[p_id].autotile_data.flags[p_coord] = p_flag;
+	}
+}
+
+uint16_t TileSet::autotile_get_bitmask(int p_id, Vector2 p_coord) {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), 0);
+	if (!tile_map[p_id].autotile_data.flags.has(p_coord)) {
+		return 0;
+	}
+	return tile_map[p_id].autotile_data.flags[p_coord];
+}
+
+const Map<Vector2, uint16_t> &TileSet::autotile_get_bitmask_map(int p_id) {
+
+	static Map<Vector2, uint16_t> dummy;
+	ERR_FAIL_COND_V(!tile_map.has(p_id), dummy);
+	return tile_map[p_id].autotile_data.flags;
+}
+
+Vector2 TileSet::autotile_get_subtile_for_bitmask(int p_id, uint16_t p_bitmask, const Node *p_tilemap_node, const Vector2 &p_tile_location) {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), Vector2());
+	//First try to forward selection to script
+	if (p_tilemap_node->get_class_name() == "TileMap") {
+		if (get_script_instance() != NULL) {
+			if (get_script_instance()->has_method("_forward_subtile_selection")) {
+				Variant ret = get_script_instance()->call("_forward_subtile_selection", p_id, p_bitmask, p_tilemap_node, p_tile_location);
+				if (ret.get_type() == Variant::VECTOR2) {
+					return ret;
+				}
+			}
+		}
+	}
+
+	List<Vector2> coords;
+	uint16_t mask;
+	for (Map<Vector2, uint16_t>::Element *E = tile_map[p_id].autotile_data.flags.front(); E; E = E->next()) {
+		mask = E->get();
+		if (tile_map[p_id].autotile_data.bitmask_mode == BITMASK_2X2) {
+			mask &= (BIND_BOTTOMLEFT | BIND_BOTTOMRIGHT | BIND_TOPLEFT | BIND_TOPRIGHT);
+		}
+		if (mask == p_bitmask) {
+			for (int i = 0; i < autotile_get_subtile_priority(p_id, E->key()); i++) {
+				coords.push_back(E->key());
+			}
+		}
+	}
+	if (coords.size() == 0) {
+		return autotile_get_icon_coordinate(p_id);
+	} else {
+		return coords[Math::random(0, (int)coords.size())];
+	}
+}
+
 void TileSet::tile_set_name(int p_id, const String &p_name) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
@@ -257,7 +544,7 @@ void TileSet::tile_clear_shapes(int p_id) {
 	tile_map[p_id].shapes_data.clear();
 }
 
-void TileSet::tile_add_shape(int p_id, const Ref<Shape2D> &p_shape, const Transform2D &p_transform, bool p_one_way) {
+void TileSet::tile_add_shape(int p_id, const Ref<Shape2D> &p_shape, const Transform2D &p_transform, bool p_one_way, const Vector2 &p_autotile_coord) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
 
@@ -265,15 +552,17 @@ void TileSet::tile_add_shape(int p_id, const Ref<Shape2D> &p_shape, const Transf
 	new_data.shape = p_shape;
 	new_data.shape_transform = p_transform;
 	new_data.one_way_collision = p_one_way;
+	new_data.autotile_coord = p_autotile_coord;
 
 	tile_map[p_id].shapes_data.push_back(new_data);
-};
+}
+
 int TileSet::tile_get_shape_count(int p_id) const {
 
 	ERR_FAIL_COND_V(!tile_map.has(p_id), 0);
 
 	return tile_map[p_id].shapes_data.size();
-};
+}
 
 void TileSet::tile_set_shape(int p_id, int p_shape_id, const Ref<Shape2D> &p_shape) {
 
@@ -351,6 +640,26 @@ Ref<OccluderPolygon2D> TileSet::tile_get_light_occluder(int p_id) const {
 	return tile_map[p_id].occluder;
 }
 
+void TileSet::autotile_set_light_occluder(int p_id, const Ref<OccluderPolygon2D> &p_light_occluder, const Vector2 &p_coord) {
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	if (p_light_occluder.is_null()) {
+		if (tile_map[p_id].autotile_data.ocludder_map.has(p_coord)) {
+			tile_map[p_id].autotile_data.ocludder_map.erase(p_coord);
+		}
+	} else {
+		tile_map[p_id].autotile_data.ocludder_map[p_coord] = p_light_occluder;
+	}
+}
+
+Ref<OccluderPolygon2D> TileSet::autotile_get_light_occluder(int p_id, const Vector2 &p_coord) const {
+	ERR_FAIL_COND_V(!tile_map.has(p_id), Ref<OccluderPolygon2D>());
+	if (!tile_map[p_id].autotile_data.ocludder_map.has(p_coord)) {
+		return Ref<OccluderPolygon2D>();
+	} else {
+		return tile_map[p_id].autotile_data.ocludder_map[p_coord];
+	}
+}
+
 void TileSet::tile_set_navigation_polygon_offset(int p_id, const Vector2 &p_offset) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
@@ -358,6 +667,7 @@ void TileSet::tile_set_navigation_polygon_offset(int p_id, const Vector2 &p_offs
 }
 
 Vector2 TileSet::tile_get_navigation_polygon_offset(int p_id) const {
+
 	ERR_FAIL_COND_V(!tile_map.has(p_id), Vector2());
 	return tile_map[p_id].navigation_polygon_offset;
 }
@@ -374,6 +684,42 @@ Ref<NavigationPolygon> TileSet::tile_get_navigation_polygon(int p_id) const {
 	return tile_map[p_id].navigation_polygon;
 }
 
+const Map<Vector2, Ref<OccluderPolygon2D> > &TileSet::autotile_get_light_oclusion_map(int p_id) const {
+
+	static Map<Vector2, Ref<OccluderPolygon2D> > dummy;
+	ERR_FAIL_COND_V(!tile_map.has(p_id), dummy);
+	return tile_map[p_id].autotile_data.ocludder_map;
+}
+
+void TileSet::autotile_set_navigation_polygon(int p_id, const Ref<NavigationPolygon> &p_navigation_polygon, const Vector2 &p_coord) {
+
+	ERR_FAIL_COND(!tile_map.has(p_id));
+	if (p_navigation_polygon.is_null()) {
+		if (tile_map[p_id].autotile_data.navpoly_map.has(p_coord)) {
+			tile_map[p_id].autotile_data.navpoly_map.erase(p_coord);
+		}
+	} else {
+		tile_map[p_id].autotile_data.navpoly_map[p_coord] = p_navigation_polygon;
+	}
+}
+
+Ref<NavigationPolygon> TileSet::autotile_get_navigation_polygon(int p_id, const Vector2 &p_coord) const {
+
+	ERR_FAIL_COND_V(!tile_map.has(p_id), Ref<NavigationPolygon>());
+	if (!tile_map[p_id].autotile_data.navpoly_map.has(p_coord)) {
+		return Ref<NavigationPolygon>();
+	} else {
+		return tile_map[p_id].autotile_data.navpoly_map[p_coord];
+	}
+}
+
+const Map<Vector2, Ref<NavigationPolygon> > &TileSet::autotile_get_navigation_map(int p_id) const {
+
+	static Map<Vector2, Ref<NavigationPolygon> > dummy;
+	ERR_FAIL_COND_V(!tile_map.has(p_id), dummy);
+	return tile_map[p_id].autotile_data.navpoly_map;
+}
+
 void TileSet::tile_set_occluder_offset(int p_id, const Vector2 &p_offset) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
@@ -381,6 +727,7 @@ void TileSet::tile_set_occluder_offset(int p_id, const Vector2 &p_offset) {
 }
 
 Vector2 TileSet::tile_get_occluder_offset(int p_id) const {
+
 	ERR_FAIL_COND_V(!tile_map.has(p_id), Vector2());
 	return tile_map[p_id].occluder_offset;
 }
@@ -405,6 +752,7 @@ void TileSet::_tile_set_shapes(int p_id, const Array &p_shapes) {
 	Vector<ShapeData> shapes_data;
 	Transform2D default_transform = tile_get_shape_transform(p_id, 0);
 	bool default_one_way = tile_get_shape_one_way(p_id, 0);
+	Vector2 default_autotile_coord = Vector2();
 	for (int i = 0; i < p_shapes.size(); i++) {
 		ShapeData s = ShapeData();
 
@@ -415,6 +763,7 @@ void TileSet::_tile_set_shapes(int p_id, const Array &p_shapes) {
 			s.shape = shape;
 			s.shape_transform = default_transform;
 			s.one_way_collision = default_one_way;
+			s.autotile_coord = default_autotile_coord;
 		} else if (p_shapes[i].get_type() == Variant::DICTIONARY) {
 			Dictionary d = p_shapes[i];
 
@@ -435,6 +784,11 @@ void TileSet::_tile_set_shapes(int p_id, const Array &p_shapes) {
 			else
 				s.one_way_collision = default_one_way;
 
+			if (d.has("autotile_coord") && d["autotile_coord"].get_type() == Variant::VECTOR2)
+				s.autotile_coord = d["autotile_coord"];
+			else
+				s.autotile_coord = default_autotile_coord;
+
 		} else {
 			ERR_EXPLAIN("Expected an array of objects or dictionaries for tile_set_shapes");
 			ERR_CONTINUE(true);
@@ -457,6 +811,7 @@ Array TileSet::_tile_get_shapes(int p_id) const {
 		shape_data["shape"] = data[i].shape;
 		shape_data["shape_transform"] = data[i].shape_transform;
 		shape_data["one_way"] = data[i].one_way_collision;
+		shape_data["autotile_coord"] = data[i].autotile_coord;
 		arr.push_back(shape_data);
 	}
 
@@ -487,6 +842,21 @@ bool TileSet::has_tile(int p_id) const {
 	return tile_map.has(p_id);
 }
 
+bool TileSet::is_tile_bound(int p_drawn_id, int p_neighbor_id) {
+
+	if (p_drawn_id == p_neighbor_id) {
+		return true;
+	} else if (get_script_instance() != NULL) {
+		if (get_script_instance()->has_method("_is_tile_bound")) {
+			Variant ret = get_script_instance()->call("_is_tile_bound", p_drawn_id, p_neighbor_id);
+			if (ret.get_type() == Variant::BOOL) {
+				return ret;
+			}
+		}
+	}
+	return false;
+}
+
 void TileSet::remove_tile(int p_id) {
 
 	ERR_FAIL_COND(!tile_map.has(p_id));
@@ -523,6 +893,8 @@ void TileSet::clear() {
 void TileSet::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("create_tile", "id"), &TileSet::create_tile);
+	ClassDB::bind_method(D_METHOD("autotile_set_bitmask_mode", "mode"), &TileSet::autotile_set_bitmask_mode);
+	ClassDB::bind_method(D_METHOD("autotile_get_bitmask_mode"), &TileSet::autotile_get_bitmask_mode);
 	ClassDB::bind_method(D_METHOD("tile_set_name", "id", "name"), &TileSet::tile_set_name);
 	ClassDB::bind_method(D_METHOD("tile_get_name", "id"), &TileSet::tile_get_name);
 	ClassDB::bind_method(D_METHOD("tile_set_texture", "id", "texture"), &TileSet::tile_set_texture);
@@ -559,6 +931,21 @@ void TileSet::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_last_unused_tile_id"), &TileSet::get_last_unused_tile_id);
 	ClassDB::bind_method(D_METHOD("find_tile_by_name", "name"), &TileSet::find_tile_by_name);
 	ClassDB::bind_method(D_METHOD("get_tiles_ids"), &TileSet::_get_tiles_ids);
+
+	BIND_VMETHOD(MethodInfo("_is_tile_bound", PropertyInfo(Variant::INT, "drawn_id"), PropertyInfo(Variant::INT, "neighbor_id")));
+	BIND_VMETHOD(MethodInfo("_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);
+
+	BIND_ENUM_CONSTANT(BIND_TOPLEFT);
+	BIND_ENUM_CONSTANT(BIND_TOP);
+	BIND_ENUM_CONSTANT(BIND_TOPRIGHT);
+	BIND_ENUM_CONSTANT(BIND_LEFT);
+	BIND_ENUM_CONSTANT(BIND_RIGHT);
+	BIND_ENUM_CONSTANT(BIND_BOTTOMLEFT);
+	BIND_ENUM_CONSTANT(BIND_BOTTOM);
+	BIND_ENUM_CONSTANT(BIND_BOTTOMRIGHT);
 }
 
 TileSet::TileSet() {

scene/resources/tile_set.h

@@ -30,6 +30,7 @@
 #ifndef TILE_SET_H
 #define TILE_SET_H
 
+#include "core/array.h"
 #include "resource.h"
 #include "scene/2d/light_occluder_2d.h"
 #include "scene/2d/navigation_polygon.h"
@@ -44,6 +45,7 @@ public:
 	struct ShapeData {
 		Ref<Shape2D> shape;
 		Transform2D shape_transform;
+		Vector2 autotile_coord;
 		bool one_way_collision;
 
 		ShapeData() {
@@ -51,6 +53,40 @@ public:
 		}
 	};
 
+	enum BitmaskMode {
+		BITMASK_2X2,
+		BITMASK_3X3
+	};
+
+	enum AutotileBindings {
+		BIND_TOPLEFT = 1,
+		BIND_TOP = 2,
+		BIND_TOPRIGHT = 4,
+		BIND_LEFT = 8,
+		BIND_CENTER = 16,
+		BIND_RIGHT = 32,
+		BIND_BOTTOMLEFT = 64,
+		BIND_BOTTOM = 128,
+		BIND_BOTTOMRIGHT = 256
+	};
+
+	struct AutotileData {
+		BitmaskMode bitmask_mode;
+		int spacing;
+		Size2 size;
+		Vector2 icon_coord;
+		Map<Vector2, uint16_t> flags;
+		Map<Vector2, Ref<OccluderPolygon2D> > ocludder_map;
+		Map<Vector2, Ref<NavigationPolygon> > navpoly_map;
+		Map<Vector2, int> priority_map;
+
+		// Default size to prevent invalid value
+		explicit AutotileData()
+			: size(64, 64), icon_coord(0, 0) {
+			bitmask_mode = BITMASK_2X2;
+		}
+	};
+
 private:
 	struct TileData {
 
@@ -66,10 +102,12 @@ private:
 		Ref<NavigationPolygon> navigation_polygon;
 		Ref<ShaderMaterial> material;
 		Color modulate;
+		bool is_autotile;
+		AutotileData autotile_data;
 
 		// Default modulate for back-compat
 		explicit TileData()
-			: modulate(1, 1, 1) {}
+			: modulate(1, 1, 1), is_autotile(false) {}
 	};
 
 	Map<int, TileData> tile_map;
@@ -87,6 +125,9 @@ protected:
 public:
 	void create_tile(int p_id);
 
+	void autotile_set_bitmask_mode(int p_id, BitmaskMode p_mode);
+	BitmaskMode autotile_get_bitmask_mode(int p_id) const;
+
 	void tile_set_name(int p_id, const String &p_name);
 	String tile_get_name(int p_id) const;
 
@@ -102,6 +143,28 @@ public:
 	void tile_set_region(int p_id, const Rect2 &p_region);
 	Rect2 tile_get_region(int p_id) const;
 
+	void tile_set_is_autotile(int p_id, bool p_is_autotile);
+	bool tile_get_is_autotile(int p_id) const;
+
+	void autotile_set_icon_coordinate(int p_id, Vector2 coord);
+	Vector2 autotile_get_icon_coordinate(int p_id) const;
+
+	void autotile_set_spacing(int p_id, int p_spacing);
+	int autotile_get_spacing(int p_id) const;
+
+	void autotile_set_size(int p_id, Size2 p_size);
+	Size2 autotile_get_size(int p_id) const;
+
+	void autotile_clear_bitmask_map(int p_id);
+	void autotile_set_subtile_priority(int p_id, const Vector2 &p_coord, int p_priority);
+	int autotile_get_subtile_priority(int p_id, const Vector2 &p_coord);
+	const Map<Vector2, int> &autotile_get_priority_map(int p_id) const;
+
+	void autotile_set_bitmask(int p_id, Vector2 p_coord, uint16_t p_flag);
+	uint16_t autotile_get_bitmask(int p_id, Vector2 p_coord);
+	const Map<Vector2, uint16_t> &autotile_get_bitmask_map(int p_id);
+	Vector2 autotile_get_subtile_for_bitmask(int p_id, uint16_t p_bitmask, const Node *p_tilemap_node = NULL, const Vector2 &p_tile_location = Vector2());
+
 	void tile_set_shape(int p_id, int p_shape_id, const Ref<Shape2D> &p_shape);
 	Ref<Shape2D> tile_get_shape(int p_id, int p_shape_id) const;
 
@@ -115,7 +178,7 @@ public:
 	bool tile_get_shape_one_way(int p_id, int p_shape_id) const;
 
 	void tile_clear_shapes(int p_id);
-	void tile_add_shape(int p_id, const Ref<Shape2D> &p_shape, const Transform2D &p_transform, bool p_one_way = false);
+	void tile_add_shape(int p_id, const Ref<Shape2D> &p_shape, const Transform2D &p_transform, bool p_one_way = false, const Vector2 &p_autotile_coord = Vector2());
 	int tile_get_shape_count(int p_id) const;
 
 	void tile_set_shapes(int p_id, const Vector<ShapeData> &p_shapes);
@@ -133,16 +196,26 @@ public:
 	void tile_set_light_occluder(int p_id, const Ref<OccluderPolygon2D> &p_light_occluder);
 	Ref<OccluderPolygon2D> tile_get_light_occluder(int p_id) const;
 
+	void autotile_set_light_occluder(int p_id, const Ref<OccluderPolygon2D> &p_light_occluder, const Vector2 &p_coord);
+	Ref<OccluderPolygon2D> autotile_get_light_occluder(int p_id, const Vector2 &p_coord) const;
+	const Map<Vector2, Ref<OccluderPolygon2D> > &autotile_get_light_oclusion_map(int p_id) const;
+
 	void tile_set_navigation_polygon_offset(int p_id, const Vector2 &p_offset);
 	Vector2 tile_get_navigation_polygon_offset(int p_id) const;
 
 	void tile_set_navigation_polygon(int p_id, const Ref<NavigationPolygon> &p_navigation_polygon);
 	Ref<NavigationPolygon> tile_get_navigation_polygon(int p_id) const;
 
+	void autotile_set_navigation_polygon(int p_id, const Ref<NavigationPolygon> &p_navigation_polygon, const Vector2 &p_coord);
+	Ref<NavigationPolygon> autotile_get_navigation_polygon(int p_id, const Vector2 &p_coord) const;
+	const Map<Vector2, Ref<NavigationPolygon> > &autotile_get_navigation_map(int p_id) const;
+
 	void remove_tile(int p_id);
 
 	bool has_tile(int p_id) const;
 
+	bool is_tile_bound(int p_drawn_id, int p_neighbor_id);
+
 	int find_tile_by_name(const String &p_name) const;
 	void get_tile_list(List<int> *p_tiles) const;
 
@@ -153,4 +226,7 @@ public:
 	TileSet();
 };
 
+VARIANT_ENUM_CAST(TileSet::AutotileBindings);
+VARIANT_ENUM_CAST(TileSet::BitmaskMode);
+
 #endif // TILE_SET_H