feat(保存系统): 实现游戏存档功能

添加SaveEngine类用于处理游戏存档的序列化、加载和应用
修改GameBusManager在游戏重启时自动保存和加载存档
扩展JsonTool功能以支持文件解析和字符串序列化
更新StarterPanel添加教程观看状态保存

scripts/Tools/Engines/SaveEngine.gd

@@ -0,0 +1,23 @@
+class_name SaveEngine
+
+const SAVE_FILE = "user://save.json"
+
+static func serialize():
+	return {
+		"out-game": {
+			"value": OutGameStorage.upgradableFieldsValue.duplicate(),
+			"level": OutGameStorage.upgradableFieldsLevel.duplicate()
+		},
+		"tutorial-watched": StarterPanel.tutorialWatched
+	}
+static func apply(saveData: Dictionary):
+	OutGameStorage.upgradableFieldsValue = saveData["out-game"]["value"]
+	OutGameStorage.upgradableFieldsLevel = saveData["out-game"]["level"]
+	StarterPanel.tutorialWatched = saveData["tutorial-watched"]
+static func load():
+	return JsonTool.parseFromFile(SAVE_FILE)
+static func save():
+	var file = FileAccess.open(SAVE_FILE, FileAccess.ModeFlags.WRITE)
+	if file is FileAccess:
+		file.store_string(JsonTool.stringify(serialize()))
+		file.close()

scripts/Tools/Engines/SaveEngine.gd.uid

@@ -0,0 +1 @@
+uid://dae5c5gtbf3uo

scripts/Tools/GameRule.gd

@@ -1,6 +1,6 @@
 class_name GameRule
 
-static var deadReasons: Array = JsonTool.parseJson("res://resources/constants/deadReasons.json")
+static var deadReasons: Array = JsonTool.parseFromFile("res://resources/constants/deadReasons.json")
 static var helpText: String
 static var difficultyRange: Vector2 = Vector2(-20, 50) # 难度倍数范围，包括最小值和最大值，负数则降低难度
 static var difficulty: float = 1 # 难度倍数，可以写小数

scripts/Tools/JsonTool.gd

@@ -1,9 +1,14 @@
 class_name JsonTool
 
-static func parseJson(filePath: String):
+static func parseFromFile(filePath: String):
 	var file = FileAccess.open(filePath, FileAccess.READ)
-	var json = file.get_as_text()
-	file.close()
+	if file is FileAccess:
+		var json = file.get_as_text()
+		file.close()
+		return parseFromText(json)
+static func parseFromText(text: String):
 	var jsonObj = JSON.new()
-	jsonObj.parse(json)
+	jsonObj.parse(text)
 	return jsonObj.data
+static func stringify(data: Variant):
+	return JSON.stringify(data, "    ")

scripts/Tools/Managers/GameBusManager.gd

@@ -1,5 +1,12 @@
 class_name GameBusManager
 
+static func _static_init():
+	init()
+
+static func init():
+	var save = SaveEngine.load()
+	if save:
+		SaveEngine.apply(save)
 static func restart(tree: SceneTree):
 	for bullet in tree.get_nodes_in_group("bullets"):
 		bullet.queue_free()
@@ -14,6 +21,7 @@ static func restart(tree: SceneTree):
 	OutGameStorage.saveInventory()
 	CameraManager.shakeStop()
 	WorldManager.timeRestart()
+	SaveEngine.save()
 	StarterPanel.selectingFeed = true
 
 	UIState.setPanel("Starter")