Project data no longer remain in memory after the user has removed th…

…eir tab

src/Classes/Project.gd

@@ -23,8 +23,8 @@ var fps := 6.0
 
 var x_symmetry_point
 var y_symmetry_point
-var x_symmetry_axis: SymmetryGuide
-var y_symmetry_axis: SymmetryGuide
+var x_symmetry_axis := SymmetryGuide.new()
+var y_symmetry_axis := SymmetryGuide.new()
 
 var selection_bitmap := BitMap.new()
 # This is useful for when the selection is outside of the canvas boundaries,
@@ -64,21 +64,17 @@ func _init(_frames := [], _name := tr("untitled"), _size := Vector2(64, 64)) ->
 	x_symmetry_point = size.x / 2
 	y_symmetry_point = size.y / 2
 
-	if !x_symmetry_axis:
-		x_symmetry_axis = SymmetryGuide.new()
-		x_symmetry_axis.type = x_symmetry_axis.Types.HORIZONTAL
-		x_symmetry_axis.project = self
-		x_symmetry_axis.add_point(Vector2(-19999, y_symmetry_point))
-		x_symmetry_axis.add_point(Vector2(19999, y_symmetry_point))
-		Global.canvas.add_child(x_symmetry_axis)
-
-	if !y_symmetry_axis:
-		y_symmetry_axis = SymmetryGuide.new()
-		y_symmetry_axis.type = y_symmetry_axis.Types.VERTICAL
-		y_symmetry_axis.project = self
-		y_symmetry_axis.add_point(Vector2(x_symmetry_point, -19999))
-		y_symmetry_axis.add_point(Vector2(x_symmetry_point, 19999))
-		Global.canvas.add_child(y_symmetry_axis)
+	x_symmetry_axis.type = x_symmetry_axis.Types.HORIZONTAL
+	x_symmetry_axis.project = self
+	x_symmetry_axis.add_point(Vector2(-19999, y_symmetry_point))
+	x_symmetry_axis.add_point(Vector2(19999, y_symmetry_point))
+	Global.canvas.add_child(x_symmetry_axis)
+
+	y_symmetry_axis.type = y_symmetry_axis.Types.VERTICAL
+	y_symmetry_axis.project = self
+	y_symmetry_axis.add_point(Vector2(x_symmetry_point, -19999))
+	y_symmetry_axis.add_point(Vector2(x_symmetry_point, 19999))
+	Global.canvas.add_child(y_symmetry_axis)
 
 	if OS.get_name() == "HTML5":
 		directory_path = "user://"
@@ -88,6 +84,15 @@ func _init(_frames := [], _name := tr("untitled"), _size := Vector2(64, 64)) ->
 		)
 
 
+func remove() -> void:
+	for layer in layers:
+		layer.frame_container.queue_free()
+	undo_redo.free()
+	for guide in guides:
+		guide.queue_free()
+	Global.projects.erase(self)
+
+
 func commit_undo() -> void:
 	if Global.canvas.selection.is_moving_content:
 		Global.canvas.selection.transform_content_cancel()

src/Main.gd

@@ -513,6 +513,6 @@ func _exit_tree() -> void:
 
 	var i := 0
 	for project in Global.projects:
-		project.undo_redo.free()
+		project.remove()
 		OpenSave.remove_backup(i)
 		i += 1

src/UI/Tabs.gd

@@ -23,7 +23,7 @@ func _on_Tabs_tab_close(tab: int) -> void:
 
 
 func _on_Tabs_reposition_active_tab_request(idx_to: int) -> void:
-	var temp = Global.projects[Global.current_project_index]
+	var temp: Project = Global.projects[Global.current_project_index]
 	Global.projects.erase(temp)
 	Global.projects.insert(idx_to, temp)
 
@@ -38,11 +38,10 @@ func _on_Tabs_reposition_active_tab_request(idx_to: int) -> void:
 
 func delete_tab(tab: int) -> void:
 	remove_tab(tab)
-	Global.projects[tab].undo_redo.free()
+	Global.projects[tab].remove()
 	OpenSave.remove_backup(tab)
 	OpenSave.current_save_paths.remove(tab)
 	OpenSave.backup_save_paths.remove(tab)
-	Global.projects.remove(tab)
 	if Global.current_project_index == tab:
 		if tab > 0:
 			Global.current_project_index -= 1