谱面替换

Assets/Scripts/Game/GameElements/GeneralEffects/EffectBase.cs

@@ -58,9 +58,18 @@ namespace Ichni.RhythmGame
         #region [基础逻辑] Main Update Logic
         public virtual void UpdateEffect(float judgeTime)
         {
-            EffectState state = CheckEffectState(judgeTime);
             float songTime = CoreServices.TimeProvider.SongTime;
 
+            // 零时长特效必须在到达触发时间的当帧执行。
+            // 若继续进入 Middle 分支，不仅会把 Adjust() 延迟到下一帧，还会产生 0 / 0 的 NaN 进度。
+            if (isInstantEffect)
+            {
+                UpdateInstantEffect(judgeTime, songTime);
+                return;
+            }
+
+            EffectState state = CheckEffectState(judgeTime);
+
             if (state == EffectState.Before && nowEffectState != EffectState.Before)
             {
                 nowEffectState = EffectState.Before;
@@ -86,6 +95,27 @@ namespace Ichni.RhythmGame
             }
         }
 
+        private void UpdateInstantEffect(float triggerTime, float songTime)
+        {
+            if (songTime < triggerTime)
+            {
+                if (nowEffectState != EffectState.Before)
+                {
+                    nowEffectState = EffectState.Before;
+                    effectProgressPercent = 0;
+                    Recover();
+                }
+
+                return;
+            }
+
+            if (nowEffectState == EffectState.After) return;
+
+            nowEffectState = EffectState.After;
+            effectProgressPercent = 1;
+            Adjust();
+        }
+
         protected virtual EffectState CheckEffectState(float triggerTime)
         {
             float songTime = CoreServices.TimeProvider.SongTime;