added update fonction inside GameManager

src/main/java/pacmanGame/GameManager.java

@@ -27,9 +27,11 @@ public class GameManager {
    }
    
 	public void Update() {
-		visualizer.Update();
-		if(time%5 == 0) {
-			player.Move();
+		if(!isPaused) {
+			visualizer.Update();
+			if(time%5 == 0) {
+				player.Move();
+			}
 		}
 		time++;
 	}