Use the Greenfoot class method 'getMouseInfo' to get a MouseInfo object and use the MouseInfo class methods on it to get the x and y you need. Refer to the API documentation of those classes.

I tried what you said and it does work, but only when my mouse is in the world. When my mouse goes off the borders of the world it says... java.lang.NullPointerException at Player1.turn(Player1.java:59) at Player1.act(Player1.java:13) ...I tried using a if statement, but it only turned when it fired and I still had the same problem. I just have to be careful not to move my mouse off the border. This is really weird. Can someone help?

Please post the code of your Player1 class 'act' and 'turn' methods. Use the 'code' link below the 'Post a reply' box to insert your code into the post. Specify which line is 59 in the 'turn' method of the Player1 class.

public void fire() { Land q = (Land)getWorld(); MouseInfo mouse = Greenfoot.getMouseInfo(); turnTowards(mouse.getX(), mouse.getY()); if (Greenfoot.isKeyDown("space")){ if(x == 0 && shot < 25 ) { shot = shot + 1; getWorld().addObject(new Bullet(getRotation()),getX(),getY()); } x = x + 1; if(x == RELOAD_SPEED) { x = 0; } } } public void reload() { shot = 0; }

You are getting an error because it is possible that the MouseInfo object returns a 'null'' value. You need to check for that befoe using any methods on it. Also, 'reload' is not being called from anywhere.

You posted this code: Line 5 tries to use methods on the MouseInfo object acquired on line 4. However, if the MouseInfo object is 'null', trying to execute those methods on it will throw a NullPointerException. You need to change line 6 to: making sure that the MouseInfo object is not null before calling the methods on it.

Thats how i got my actor to face the mouse. Hope this helps :)