Big refactor: Fix plugin issues when disabling/reenabling plugins (#598)

Co-authored-by: balloonpopper <5151242+balloonpopper@users.noreply.github.com>
Co-authored-by: Duncan Brown <duncan@prometheussoftware.ca>

addons/escoria-core/game/esc_autoload.gd

@@ -0,0 +1,195 @@
+# This is Escoria's singleton script.
+# It holds accessors to some utils, such as Escoria's logger.
+
+extends Node
+
+
+# Signal sent when Escoria is paused
+signal paused
+
+# Signal sent when Escoria is resumed from pause
+signal resumed
+
+
+# Current game state
+# * DEFAULT: Common game function
+# * DIALOG: Game is playing a dialog
+# * WAIT: Game is waiting
+enum GAME_STATE {
+	DEFAULT,
+	DIALOG,
+	WAIT
+}
+
+
+# Audio bus indices.
+const BUS_MASTER = "Master"
+const BUS_SFX = "SFX"
+const BUS_MUSIC = "Music"
+const BUS_SPEECH = "Speech"
+
+# Path to camera scene
+const CAMERA_SCENE_PATH = "res://addons/escoria-core/game/scenes/camera_player/camera.tscn"
+
+
+# Logger class
+const Logger = preload("res://addons/escoria-core/game/esc_logger.gd")
+
+
+# Logger instance
+var logger = Logger.ESCLoggerFile.new()
+
+# ESC Compiler
+var esc_compiler = ESCCompiler.new()
+
+# ESC Object Manager
+var object_manager = ESCObjectManager.new()
+
+# ESC Room Manager 
+var room_manager = ESCRoomManager.new()
+
+# Terrain of the current room
+var room_terrain
+
+# The inventory manager instance
+var inventory_manager: ESCInventoryManager
+
+# The action manager instance
+var action_manager: ESCActionManager
+
+# ESC Event manager instance
+var event_manager: ESCEventManager
+
+# ESC globals registry instance
+var globals_manager: ESCGlobalsManager
+
+# ESC command registry instance
+var command_registry: ESCCommandRegistry
+
+# Resource cache handler
+var resource_cache: ESCResourceCache
+
+# Dialog player instantiator. This instance is called directly for dialogs.
+var dialog_player: ESCDialogPlayer
+
+# Inventory scene
+var inventory
+
+# These are settings that the player can affect and save/load later
+var settings: ESCSaveSettings
+
+# The main scene
+var main
+
+# The escoria inputs manager
+var inputs_manager: ESCInputsManager
+
+# Savegames and settings manager
+var save_manager: ESCSaveManager
+
+# The game scene loaded
+var game_scene: ESCGame
+
+# The main player camera
+var player_camera: ESCCamera
+
+# The compiled start script loaded from ProjectSettings
+# escoria/main/game_start_script
+var start_script: ESCScript
+
+# Whether we ran a room directly from editor, not a full game
+var is_direct_room_run: bool = false
+
+# Whether we're quitting the game
+var is_quitting: bool = false
+
+
+# The game resolution
+onready var game_size = get_viewport().size
+
+# The current state of the game
+onready var current_state = GAME_STATE.DEFAULT
+
+
+# Ready function
+func _ready():
+	# We check if we run the full game or a room scene directly
+	if not get_tree().current_scene is ESCMain:
+		# Running a room scene. We need to instantiate the main scene ourselves
+		# so that the Escoria scene is created and managers are instanced as well.
+		is_direct_room_run = true
+		var main_scene = preload("res://addons/escoria-core/game/main_scene.tscn").instance()
+		add_child(main_scene)
+
+
+# Get the Escoria node. That node gives access to the Escoria scene that's
+# instanced by the main_scene (if full game is run) or by this autoload if
+# room is run directly.
+func get_escoria():
+	# We check if we run the full game or a room scene directly
+	if get_tree().current_scene is ESCMain:
+		return get_node("/root/main_scene").escoria_node
+	else:
+		return get_node("main_scene").escoria_node
+
+
+# Pauses or unpause the game
+#
+# #### Parameters
+# - p_paused: if true, pauses the game. If false, unpauses the game.
+func set_game_paused(p_paused: bool):
+	if p_paused:
+		emit_signal("paused")
+	else:
+		emit_signal("resumed")
+
+	var scene_tree = get_tree()
+
+	if is_instance_valid(scene_tree):
+		scene_tree.paused = p_paused
+
+
+# Apply the loaded settings
+#
+# #### Parameters
+#
+# * p_settings: Loaded settings
+func apply_settings(p_settings: ESCSaveSettings) -> void:
+	if not Engine.is_editor_hint():
+		escoria.logger.info(self, "******* settings loaded")
+		if p_settings != null:
+			settings = p_settings
+		else:
+			settings = ESCSaveSettings.new()
+
+		AudioServer.set_bus_volume_db(
+			AudioServer.get_bus_index(BUS_MASTER),
+			linear2db(settings.master_volume)
+		)
+		AudioServer.set_bus_volume_db(
+			AudioServer.get_bus_index(BUS_SFX),
+			linear2db(settings.sfx_volume)
+		)
+		AudioServer.set_bus_volume_db(
+			AudioServer.get_bus_index(BUS_MUSIC),
+			linear2db(settings.music_volume)
+		)
+		AudioServer.set_bus_volume_db(
+			AudioServer.get_bus_index(BUS_SPEECH),
+			linear2db(settings.speech_volume)
+		)
+		TranslationServer.set_locale(settings.text_lang)
+
+		game_scene.apply_custom_settings(settings.custom_settings)
+
+
+# Called from main menu's "new game" button
+func new_game():
+	get_escoria().new_game()
+
+
+# Called from main menu's "quit" button
+func quit():
+	is_quitting = true
+	get_escoria().quit()
+