feat: Several fixes and optimizations (#467)

Co-authored-by: Dennis Ploeger <develop@dieploegers.de>

addons/escoria-core/game/escoria.gd

@@ -1,4 +1,5 @@
 # The escoria main script
+tool
 extends Node
 
 # Signal sent when pause menu has to be displayed
@@ -310,12 +311,6 @@ func _input(event):
 	if event.is_action_pressed("ui_cancel"):
 		emit_signal("request_pause_menu")
 	
-	if ProjectSettings.get_setting("escoria/ui/tooltip_follows_mouse"):
-		if escoria.main.current_scene and escoria.main.current_scene.game:
-			if event is InputEventMouseMotion:
-				escoria.main.current_scene.game. \
-					update_tooltip_following_mouse_position(event.position)
-
 
 # Pauses or unpause the game
 #
@@ -349,6 +344,110 @@ func run_event_from_script(script: ESCScript, event_name: String):
 			[]
 		)
 		return
+		
+
+# Register a new project setting if it hasn't been defined already
+#
+# #### Parameters
+#
+# - name: Name of the project setting
+# - default: Default value
+# - info: Property info for the setting
+func register_setting(name: String, default, info: Dictionary):
+	if not ProjectSettings.has_setting(name):
+		ProjectSettings.set_setting(
+			name,
+			default
+		)
+		info.name = name
+		ProjectSettings.add_property_info(info)
+		
+
+# Register a user interface. This should be called in a deferred way
+# from the addon's _enter_tree.
+#
+# #### Parameters
+# - game_scene: Path to the game scene extending ESCGame
+func register_ui(game_scene: String):
+	if not ProjectSettings.get_setting("escoria/ui/game_scene") in [
+		"",
+		game_scene
+	]:
+		logger.report_errors(
+			"escoria.gd:register_ui()",
+			[
+				"Can't register user interface because %s is registered" % \
+						ProjectSettings.get_setting("escoria/ui/game_scene")
+			]
+		)
+	ProjectSettings.set_setting(
+		"escoria/ui/game_scene",
+		game_scene
+	)
+	
+
+# Deregister a user interface
+#
+# #### Parameters
+# - game_scene: Path to the game scene extending ESCGame
+func deregister_ui(game_scene: String):
+	if ProjectSettings.get_setting("escoria/ui/game_scene") != game_scene:
+		logger.report_errors(
+			"escoria.gd:deregister_ui()",
+			[
+				(
+					"Can't deregister user interface %s because it " +
+					"is not registered."
+				) % ProjectSettings.get_setting("escoria/ui/game_scene")
+			]
+		)
+	ProjectSettings.set_setting(
+		"escoria/ui/game_scene",
+		""
+	)
+	
+
+# Register a dialog manager addon. This should be called in a deferred way
+# from the addon's _enter_tree.
+#
+# #### Parameters
+# - manager_class: Path to the manager class script
+func register_dialog_manager(manager_class: String):
+	var dialog_managers: Array = ProjectSettings.get_setting(
+		"escoria/ui/dialog_managers"
+	)
+	if manager_class in dialog_managers:
+		return
+	dialog_managers.push_back(manager_class)
+	ProjectSettings.set_setting(
+		"escoria/ui/dialog_managers",
+		dialog_managers
+	)
+	
+
+# Deregister a dialog manager addon
+#
+# #### Parameters
+# - manager_class: Path to the manager class script
+func deregister_dialog_manager(manager_class: String):
+	var dialog_managers: Array = ProjectSettings.get_setting(
+		"escoria/ui/dialog_managers"
+	)
+	if not manager_class in dialog_managers:
+		logger.report_warnings(
+			"escoria.gd:deregister_dialog_manager()",
+			[
+				"Dialog manager %s is not registered" % manager_class
+			]
+		)
+		return
+	
+	dialog_managers.erase(manager_class)
+	
+	ProjectSettings.set_setting(
+		"escoria/ui/dialog_managers",
+		dialog_managers
+	)
 
 
 # Function called to quit the game.