From 915df1ade3456b0ca1eef1642c40170bcf86308e Mon Sep 17 00:00:00 2001
From: Akirami <66513481+A-kirami@users.noreply.github.com>
Date: Thu, 25 Jun 2026 10:15:31 +0800
Subject: [PATCH 1/2] fix: resolve the transform calculation order of the -next
 chain in fast preview

---
 .../src/Core/controller/gamePlay/scriptExecutor.ts    | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts b/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
index 8bfbb5cd8..9dd4ab7c2 100644
--- a/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
+++ b/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
@@ -35,6 +35,16 @@ export const whenChecker = (whenValue: string | undefined): boolean => {
   return !!strIf(valExp);
 };
 
+function settleFastPreviewPendingStateBeforeNext() {
+  if (!WebGAL.gameplay.isFastPreview) {
+    return;
+  }
+
+  // fast preview 的 -next 链不会在语句之间 commit，需要先结算当前句会影响后续演算的 pending 终态。
+  WebGAL.gameplay.performController.discardUncommittedNonHoldPerforms(true);
+  WebGAL.gameplay.performController.clearNonHoldPerformsFromStageState();
+}
+
 /**
  * 语句执行器
  * 执行语句，同步场景状态，并根据情况立即执行下一句或者加入backlog
@@ -148,6 +158,7 @@ export const scriptExecutor = (depth = 0) => {
   if (isNext && !hasPendingBlockingStateCalculationPerform && !WebGAL.sceneManager.lockSceneWrite) {
     WebGAL.sceneManager.sceneData.currentSentenceId++;
     saveBacklogIfNeeded();
+    settleFastPreviewPendingStateBeforeNext();
     scriptExecutor(depth + 1);
     return;
   }

From 71c5639ec18d002807c4a04a705ecd4fbf037a68 Mon Sep 17 00:00:00 2001
From: Akirami <66513481+A-kirami@users.noreply.github.com>
Date: Thu, 25 Jun 2026 11:04:20 +0800
Subject: [PATCH 2/2] fix: resolve the settlement order of the `-next` chain
 when using fast preview

---
 packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts b/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
index 9dd4ab7c2..6333987a1 100644
--- a/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
+++ b/packages/webgal/src/Core/controller/gamePlay/scriptExecutor.ts
@@ -157,8 +157,8 @@ export const scriptExecutor = (depth = 0) => {
   // 执行“下一句”。只有需要外部输入才能确定后续状态的演出，才会阻塞状态演算。
   if (isNext && !hasPendingBlockingStateCalculationPerform && !WebGAL.sceneManager.lockSceneWrite) {
     WebGAL.sceneManager.sceneData.currentSentenceId++;
-    saveBacklogIfNeeded();
     settleFastPreviewPendingStateBeforeNext();
+    saveBacklogIfNeeded();
     scriptExecutor(depth + 1);
     return;
   }