106 lines
2.9 KiB
C#
106 lines
2.9 KiB
C#
namespace AibisDream.SaveSystem
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{
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/// <summary>
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/// 可存点被拒绝的原因，供日志与 UI 提示使用。
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/// </summary>
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public enum SavePointRejectReason
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{
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None,
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Restoring,
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GamePaused,
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NoActiveNode,
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StartNode,
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FunctionNode,
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NoAutoSave
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}
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/// <summary>
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/// 可存点判定器。
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/// <para>
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/// P3 只搭框架：规则不是最终版，后续随 Yarn 节点 tags 整理和章节策略扩展而更新。
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/// 当前所有 FixState 均放行，不可存状态由 Yarn 节点流程控制。
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/// </para>
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/// </summary>
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public static class SavePointEvaluator
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{
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/// <summary>
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/// 当前是否可以自动存档。
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/// </summary>
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public static bool CanAutoSave(out SavePointRejectReason reason)
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{
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if (SaveRestoreOrchestrator.IsRestoring)
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{
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reason = SavePointRejectReason.Restoring;
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return false;
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}
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if (GameManager.Instance != null && GameManager.Instance.state.isInPause)
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{
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reason = SavePointRejectReason.GamePaused;
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return false;
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}
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var (nodeName, tags) = DialogController.Instance != null
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? DialogController.Instance.GetCurrentNodeContext()
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: (null, null);
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if (string.IsNullOrEmpty(nodeName))
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{
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reason = SavePointRejectReason.NoActiveNode;
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return false;
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}
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if (nodeName == "Start")
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{
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reason = SavePointRejectReason.StartNode;
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return false;
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}
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if (tags != null && IsTagPresent(tags, "function"))
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{
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reason = SavePointRejectReason.FunctionNode;
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return false;
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}
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reason = SavePointRejectReason.None;
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return true;
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}
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/// <summary>
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/// 当前是否可以手动存档。
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/// 手动档 = 复制最近自动档，因此需要当前可自动存档且自动档存在。
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/// </summary>
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public static bool CanManualSave(out SavePointRejectReason reason)
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{
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if (!CanAutoSave(out reason))
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{
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return false;
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}
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if (!SlotDirectory.Exists(SlotIndex.Auto))
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{
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reason = SavePointRejectReason.NoAutoSave;
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return false;
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}
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reason = SavePointRejectReason.None;
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return true;
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}
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private static bool IsTagPresent(System.Collections.Generic.IReadOnlyList<string> tags, string tag)
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{
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if (tags == null) return false;
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foreach (var t in tags)
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{
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if (t == tag)
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{
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return true;
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}
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}
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return false;
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}
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}
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}
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