Robocode Enemy class setDirection() calling

Question

I'm programming Robocode and now I have a coding question:

I defined class Enemy to store enemy information (such as heading, bearing, velocity etc.) and in this class I also defined a private attribute named direction. Then I use the public getters and setters to allow my bot to call those properties. But when I use enemy.setDirection(e.getDirection()); , NetBean IDE shows it as incorrect. Could someone help solve this problem?

public class Enemy {
    // ...
    private double direction;

    public double getDirection(ScannedRobotEvent e, AdvancedRobot me) {
        direction = e.getBearing() + me.getHeading();
        return direction;
    }

    public void setDirection(double direction) {
        this.direction = direction;
    }
}

Then in my robot class:

public class myBot extends AdvancedRobot {
    private Enemy enemy = new Enemy();

    public onScannedRobot(ScannedRobotEvent e) {
        enemy.setDirection(e.getDirection()); // Here is the problem
    }
}

Answer 1

When you call e.getDirection() it is looking for that method in ScannedRobotEvent . But getDirection() has only been declared for the Enemy class.

Answer 2

调用getDirection方法时，必须输入属性，因此在这种情况下，需要输入ScannedRobotEvent和AdvancedRobot字段。