// Called when the mouse wheel is rotated
public void onMouseWheelMoved(MouseWheelEvent e) {
// If the wheel rotation is negative it means that it is moved forward.
// Set move direction = forward, if wheel is moved forward.
// Otherwise, set move direction = backward
moveDirection = (e.getWheelRotation() < 0) ? 1 : -1;
// Set the amount to move = absolute wheel rotation amount * 5 (speed)
// Here 5 means 5 pixels per wheel rotation step. The higher value, the
// more speed
moveAmount += Math.abs(e.getWheelRotation()) * 5;
}
// Called when the robot must run
public void run() {
// Sets the colors of the robot
// body = black, gun = white, radar = red
setColors(Color.BLACK, Color.WHITE, Color.RED);
// Loop forever
for (; ; ) {
// Sets the robot to move forward, backward or stop moving depending
// on the move direction and amount of pixels to move
setAhead(moveAmount * moveDirection);
// Decrement the amount of pixels to move until we reach 0 pixels
// This way the robot will automatically stop if the mouse wheel
// has stopped it's rotation
moveAmount = Math.max(0, moveAmount - 1);
// Sets the robot to turn right or turn left (at maximum speed) or
// stop turning depending on the turn direction
setTurnRight(45 * turnDirection); // degrees
// Turns the gun toward the current aim coordinate (x,y) controlled by
// the current mouse coordinate
double angle = normalAbsoluteAngle(Math.atan2(aimX - getX(), aimY - getY()));
setTurnGunRightRadians(normalRelativeAngle(angle - getGunHeadingRadians()));
// Fire the gun with the specified fire power, unless the fire power = 0
if (firePower > 0) {
setFire(firePower);
}
// Execute all pending set-statements
execute();
// Next turn is processed in this loop..
}
}