Made input callbacks lock during transitions and lockinput.

src/Screen.cpp

@@ -304,7 +304,8 @@ void Screen::ClearMessageQueue( const ScreenMessage SM )
 
 bool Screen::PassInputToLua(const InputEventPlus& input)
 {
-	if(m_InputCallbacks.empty())
+	if(m_InputCallbacks.empty() || m_fLockInputSecs > 0.0f
+		|| !AllowCallbackInput())
 	{
 		return false;
 	}

src/Screen.h

@@ -128,6 +128,7 @@ public:
 	bool PassInputToLua(const InputEventPlus& input);
 	void AddInputCallbackFromStack(lua_State* L);
 	void RemoveInputCallback(lua_State* L);
+	virtual bool AllowCallbackInput() { return true; }
 
 	// let subclass override if they want
 	virtual bool MenuUp(const InputEventPlus &) { return false; }

src/ScreenWithMenuElements.h

@@ -22,6 +22,7 @@ public:
 	void StartTransitioningScreen( ScreenMessage smSendWhenDone );
 	virtual void Cancel( ScreenMessage smSendWhenDone );
 	bool IsTransitioning();
+	virtual bool AllowCallbackInput() { return !IsTransitioning(); }
 
 	void StopTimer();
 	void ResetTimer();