Add OF_StateChanged handling to NoDelay

src/actor.h

@@ -647,6 +647,8 @@ public:
 	// Returns true if this actor is within melee range of its target
 	bool CheckMeleeRange();
 
+	bool CheckNoDelay();
+
 	virtual void BeginPlay();			// Called immediately after the actor is created
 	virtual void PostBeginPlay();		// Called immediately before the actor's first tick
 	virtual void LevelSpawned();		// Called after BeginPlay if this actor was spawned by the world

src/g_shared/a_fastprojectile.cpp

@@ -138,17 +138,8 @@ void AFastProjectile::Tick ()
 			}
 		}
 	}
-	if ((flags7 & MF7_HANDLENODELAY) && !(flags2 & MF2_DORMANT))
+	if (!CheckNoDelay())
-	{
+		return;		// freed itself
-		flags7 &= ~MF7_HANDLENODELAY;
-		if (state->GetNoDelay())
-		{
-			// For immediately spawned objects with the NoDelay flag set for their
-			// Spawn state, explicitly call the current state's function.
-			if (state->CallAction(this, this) && (ObjectFlags & OF_EuthanizeMe))
-				return;				// freed itself
-		}
-	}
 	// Advance the state
 	if (tics != -1)
 	{

src/p_mobj.cpp

@@ -3841,17 +3841,8 @@ void AActor::Tick ()
 		Destroy();
 		return;
 	}
-	if ((flags7 & MF7_HANDLENODELAY) && !(flags2 & MF2_DORMANT))
+	if (!CheckNoDelay())
-	{
+		return; // freed itself
-		flags7 &= ~MF7_HANDLENODELAY;
-		if (state->GetNoDelay())
-		{
-			// For immediately spawned objects with the NoDelay flag set for their
-			// Spawn state, explicitly call the current state's function.
-			if (state->CallAction(this, this) && (ObjectFlags & OF_EuthanizeMe))
-				return;				// freed itself
-		}
-	}
 	// cycle through states, calling action functions at transitions
 	if (tics != -1)
 	{
@@ -3892,6 +3883,38 @@ void AActor::Tick ()
 	}
 }
 
+//==========================================================================
+//
+// AActor :: CheckNoDelay
+//
+//==========================================================================
+
+bool AActor::CheckNoDelay()
+{
+	if ((flags7 & MF7_HANDLENODELAY) && !(flags2 & MF2_DORMANT))
+	{
+		flags7 &= ~MF7_HANDLENODELAY;
+		if (state->GetNoDelay())
+		{
+			// For immediately spawned objects with the NoDelay flag set for their
+			// Spawn state, explicitly call the current state's function.
+			if (state->CallAction(this, this))
+			{
+				if (ObjectFlags & OF_EuthanizeMe)
+				{
+					return false;		// freed itself
+				}
+				if (ObjectFlags & OF_StateChanged)
+				{
+					ObjectFlags &= ~OF_StateChanged;
+					return SetState(state);
+				}
+			}
+		}
+	}
+	return true;
+}
+
 //==========================================================================
 //
 // AActor :: CheckSectorTransition