[RF] AquaMai configuration refactor (#82)

更新了配置文件格式，原有的配置文件将被自动无缝迁移，详情请见新的配置文件中的注释（例外：`SlideJudgeTweak` 不再默认启用）
旧配置文件将被重命名备份，如果更新到此版本遇到 Bug 请联系我们

Updated configuration file schema. The old config file will be migrated automatically and seamlessly. See the comments in the new configuration file for details. (Except for `SlideJudgeTweak` is no longer enabled by default)
Your old configuration file will be renamed as a backup. If you encounter any bug with this version, please contact us.

AquaMai/AquaMai.Mods/GameSettings/CreditConfig.cs

@@ -0,0 +1,49 @@
+using AquaMai.Config.Attributes;
+using AquaMai.Core.Attributes;
+using HarmonyLib;
+
+namespace AquaMai.Mods.GameSettings;
+
+[ConfigSection(
+    en: "Set the game to Paid Play (lock credits) or Free Play.",
+    zh: "设置游戏为付费游玩（锁定可用点数）或免费游玩")]
+public class CreditConfig
+{
+    [ConfigEntry(
+        en: "Set to Free Play (set to false for Paid Play).",
+        zh: "是否免费游玩（设为 false 时为付费游玩）")]
+    private static readonly bool isFreePlay = true;
+
+    [HarmonyPrefix]
+    [HarmonyPatch(typeof(Manager.Credit), "IsFreePlay")]
+    private static bool PreIsFreePlay(ref bool __result)
+    {
+        __result = isFreePlay;
+        return false;
+    }
+
+    [ConfigEntry(
+        en: "Lock credits amount (only valid in Paid Play). Set to 0 to disable.",
+        zh: "锁定可用点数数量（仅在付费游玩时有效），设为 0 以禁用")]
+    private static readonly uint lockCredits = 24;
+
+    private static bool ShouldLockCredits => !isFreePlay && lockCredits > 0;
+
+    [EnableIf(nameof(ShouldLockCredits))]
+    [HarmonyPrefix]
+    [HarmonyPatch(typeof(Manager.Credit), "IsGameCostEnough")]
+    private static bool PreIsGameCostEnough(ref bool __result)
+    {
+        __result = true;
+        return false;
+    }
+
+    [EnableIf(nameof(ShouldLockCredits))]
+    [HarmonyPrefix]
+    [HarmonyPatch(typeof(AMDaemon.CreditUnit), "Credit", MethodType.Getter)]
+    private static bool PreCredit(ref uint __result)
+    {
+        __result = 24;
+        return false;
+    }
+}