source: last-defense/main/Ship.java

package main;

import java.util.LinkedList;
import gamegui.Animation;

public class Ship extends Unit {
    int damage;
    Unit target;
    public Location targetLoc;
    Animation projectileImg;
    int speed;
    boolean startFiring;
    
    public Ship(final String name, final Animation img, final int damage, final int hitpoints, final int fireRate, final Animation projectileImg) {
        super(name, img, hitpoints);
        this.damage = damage;
        this.target = null;
        this.targetLoc = null;
        this.projectileImg = projectileImg;
        this.speed = 100;
        this.targetLoc = new Location(400.0, 400.0);
        this.startFiring = false;
        this.actions.add(new Action.Fire(fireRate));
        this.actions.add(new Action.Move(20L));
    }
    
    public Ship(final Ship copy) {
        super(copy);
        this.damage = copy.damage;
        if (copy.target == null) {
            this.target = null;
        }
        else {
            this.target = new Unit(copy.target);
        }
        this.targetLoc = new Location(copy.targetLoc);
        this.projectileImg = new Animation(copy.projectileImg);
        this.speed = copy.speed;
        this.startFiring = false;
    }
    
    public int getDamage() {
        return this.damage;
    }
    
    @Override
    public void perform(final Action action, final LinkedList<Entity> lstObjects, final LinkedList<Unit> lstTargets) {
        if (action instanceof Action.Fire) {
            this.perform((Action.Fire)action, lstObjects, lstTargets);
        }
        else if (action instanceof Action.Move) {
            this.perform((Action.Move)action, lstObjects, lstTargets);
        }
    }
    
    public void perform(final Action.Move action, final LinkedList<Entity> lstObjects, final LinkedList<Unit> lstTargets) {
        if (this.loc.moveToTarget(this.targetLoc.getX(), this.targetLoc.getY(), (System.currentTimeMillis() - action.timeLastPerformed) * this.speed / 1000L)) {
            this.startFiring = true;
        }
    }
    
    public void perform(final Action.Fire action, final LinkedList<Entity> lstObjects, final LinkedList<Unit> lstTargets) {
        if (lstTargets.size() == 0) {
            this.target = null;
            return;
        }
        if (this.target == null || this.target.remove) {
            this.target = lstTargets.get((int)(Math.random() * lstTargets.size()));
        }
        if (this.startFiring) {
            lstObjects.add(this.fire(this.target));
        }
    }
    
    public Projectile fire(final Unit target) {
        final Projectile proj = new Projectile("Projectile", this.projectileImg, 400, target.loc, target, this.damage);
        proj.setLocation(this.loc);
        return proj;
    }
}