最终整理版

assets/scripts/tonori/tulimshar/LetterStash.gd

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+extends NpcScript
+
+#
+const QUEST_ID : int = ProgressCommons.Quest.TULIMSHAR_OLD_FRIENDSHIP
+var sealedLettersID : int = DB.GetCellHash("Sealed Letters")
+var heavyEnvelopeID : int = DB.GetCellHash("Heavy Envelope")
+
+#
+func OnStart():
+	var questState : int = GetQuest(QUEST_ID)
+	if questState != ProgressCommons.TULIMSHAR_OLD_FRIENDSHIP.STARTED:
+		return
+
+	if HasItemsSpace([[sealedLettersID, 1], [heavyEnvelopeID, 1]]):
+		Mes("你在积灰的书本之间找到了两个旧信封。")
+		Mes("一个封得很仔细，另一个意外地沉。")
+		SetQuest(QUEST_ID, ProgressCommons.TULIMSHAR_OLD_FRIENDSHIP.ENVELOPES_FOUND)
+		AddItem(sealedLettersID)
+		AddItem(heavyEnvelopeID)
+	else:
+		Mes("你看见了信封，但背包太满，已经装不下它们。")