ZVISION: Implement method for visual output of some info

engines/zvision/zvision.cpp

@@ -472,4 +472,10 @@ bool ZVision::ifQuit() {
 	}
 	return false;
 }
+void ZVision::showDebugMsg(const Common::String &msg, int16 delay) {
+	uint16 msgid = _renderManager->createSubArea();
+	_renderManager->updateSubArea(msgid, msg);
+	_renderManager->deleteSubArea(msgid, delay);
+}
+
 } // End of namespace ZVision

engines/zvision/zvision.h

@@ -190,6 +190,8 @@ public:
 
 	bool ifQuit();
 
+	void showDebugMsg(const Common::String &msg, int16 delay = 3000);
+
 private:
 	void initialize();
 	void initFonts();