TankTrainer.java

package peakrobots.ilkin;

import robocode.AdvancedRobot;

import java.awt.event.KeyEvent;

public class TankTrainer extends AdvancedRobot {

    enum State {
        STEADY, AHEAD, LEFT, RIGHT
    }

    private State state = State.STEADY;
    private int numKeyPressed = 0;

    @Override
    public void run() {
        while (true) {
            switch (state) {
                case STEADY:
                    setStop();
                    break;
                case AHEAD:
                    setAhead(10000);
                    break;
                case LEFT:
                    setTurnLeft(10000);
                    break;
                case RIGHT:
                    setTurnRight(10000);
                    break;
            }
            execute();
        }
    }

    @Override
    public void onKeyPressed(KeyEvent e) {
        numKeyPressed ++;
        switch (e.getKeyCode()) {
            case KeyEvent.VK_LEFT  : state = State.LEFT; break;
            case KeyEvent.VK_RIGHT  : state = State.RIGHT; break;
            case KeyEvent.VK_UP  : state = State.AHEAD; break;
            case KeyEvent.VK_SPACE  : setFire(1); break;
        }
    }

    @Override
    public void onKeyReleased(KeyEvent e) {
        numKeyPressed --;
        if (numKeyPressed == 0) {
            state = State.STEADY;
        }
    }
}