shooting game code: qwerty

//GAME
package game;

import processing.core.PApplet;
import processing.core.PImage;


public class Spaceship extends PApplet
{
    /**
	 *
	 */
	private static final long serialVersionUID = 1L;
	private static final char[] WOOOOOOOSH = null;
	public float distance;
	public float rotationAmount = 0;
    public boolean rotateLeft = false;
    public boolean rotateRight = false;
    public boolean shootBullet = false;

    public float speed = 11;

    public float x = 400;
    public float y = 350;

    public boolean moveForward = false;

    public boolean moving = false;

    public void setup()
    {
        size(800, 700);
    }

    public void draw()
    {
        background(142, 133, 133);

        //Move and control the rocket ship.
        move();
        changeRotation();
        translate(x, y);
        rotate(rotationAmount);
        drawRocketShip();
        shoot();

    }

    //Set up and draw the rocket ship.
    public int rocketX = 0;
    public int rocketY = 0;


    public void drawRocketShip()
    {
        //Body color.
        stroke(0, 149, 185);
        fill(0, 149, 185);

        //Body
        rect(rocketX, rocketY, -75/2, 50/2);
        rect(rocketX, rocketY, 75/2, -50/2);
        rect(rocketX, rocketY, -75/2, -50/2);
        rect(rocketX, rocketY, 75/2, 50/2);

        //GunsRight
        fill(0, 149, 185);
        rect(-2, -2, 10, 45);
        rect(-10, 35, 55, 10);
        fill(180, 0, 0);
        rect(40, 35, 5, 10);
        rect(-15, 35, 5, 10);

        //GunLeft
        fill(0, 149, 185);
        rect(-2, -45, 10, 45);
        fill(0, 149, 185);
        rect(-10, -45, 55, 10);
        fill(180, 0, 0);
        rect(40, -45, 5, 10);
        rect(-15, -45, 5, 10);

        //front
        fill(170, 0, 0);
        rect(10, 0, 2, 2);

        //window color
        fill(255, 255, 255);

        //window
        fill(180, 0, 0);
        ellipse(rocketX + 0, rocketY + 0, 30, 25);
        //wings

        if(moving)
        {
            //Fire trail
            fill(255, 0, 0);
            noStroke();
            //triangle( 0, 0, rocketX - 30, rocketY + 25, rocketX - 10, rocketY + 40);
        }
    }

    public void keyPressed()
    {
        if(key == 'a')
        {
            rotateLeft = true;
        }
        if(key == 'd')
        {
            rotateRight = true;
        }
        if(key == 'w')
        {
            moveForward = true;
            moving = true;
        }
        if(key == ' ')
        {
        	shootBullet = true;
        	distance += 30;
        }

    }

    public void keyReleased()
    {
        if(key =='a')
        {
            rotateLeft = false;
        }
        if(key == 'd')
        {
            rotateRight = false;
        }
        if(key == 'w')
        {
            moveForward = false;
            moving = false;
        }
        if(key == ' ')
        {
        	shootBullet = false;
        	distance=0;
        }
    }

    public void move()
    {
        if(moveForward)
        {
            x += speed * cos(rotationAmount);
            y += speed * sin(rotationAmount);
        }
    }
    public void shoot()
    {
    	if(shootBullet)
    	{
    		shot bullet = new shot(rocketX, rocketY);
    		bullet.drawShot();


    		fill(255, 128, 0);



    		ellipse(bullet.getXofShot() +60 + distance, bullet.getYofShot() +40, 10f, 10f);
    		ellipse(bullet.getXofShot() +60 + distance, bullet.getYofShot() -40, 10f, 10f);

    		if(distance>50)
    		{
    			ellipse(bullet.getXofShot() +10 + distance, bullet.getYofShot() +40, 10f, 10f);
        		ellipse(bullet.getXofShot() +10 + distance, bullet.getYofShot() -40, 10f, 10f);
    		}

    	}
    }
    public void bullet()
    {

    }
    public void changeRotation()
    {
        if(rotateLeft)
        {
            rotationAmount -= .08;
            if(rotationAmount < 0)
            {
                rotationAmount = 2 * PI;
            }
        }
        if(rotateRight)
        {
            rotationAmount += .08;
            if(rotationAmount > 2 * PI)
            {
                rotationAmount = 0;
            }
        }
    }


}