package game2;

import utilities.Action;
import utilities.Vector2D;

import java.awt.*;
import java.awt.geom.AffineTransform;

import static utilities.Constants.*;

public class Ship extends GameObject{
    public static final int RADIUS = 8;
    // rotation velocity in radians per second
    public static final double STEER_RATE = 2* Math.PI;
    // acceleration when thrust is applied
    public static final double MAG_ACC = 200;
    // constant speed loss factor
    public static final double DRAG = 0.99;
    public static final Color COLOR = Color.cyan;
    public Vector2D position; // on frame
    public Vector2D velocity; // per second
    // direction in which the nose of the ship is pointing
    // this will be the direction in which thrust is applied
    // it is a unit vector representing the angle by which the ship has rotated
    public Vector2D direction;
    //coordinates for ship
    static final int[] XP = {1,1,0,-1,-1,-3,-3,-1,-2,2,1,3,3};

    static final int[] YP = {0,-2,-4,-2,0,1,2,2,3,3,2,2,1};
    //coordinates for thruster
    int[] XPTHRUST2 = {-1,0,1};
    int[] YPTHRUST2 = {3,5,3};
    int[] XPTHRUST = {-2,0,2};
    int[] YPTHRUST = {3,6,3};


    static boolean thrusting = false;

    public Bullet bullet = null;
    long time;
    static int lives;
    int shootdelay, bulletlife;



    // controller which provides an Action object in each frame
    private Controller ctrl;

    public Ship(Controller ctrl) {
        lives = 4;
        shootdelay = 400;
        bulletlife = 30;
        this.ctrl = ctrl;
        position = new Vector2D(FRAME_WIDTH/2, FRAME_HEIGHT/2);
        velocity = new Vector2D();
        direction = new Vector2D(0, -1);
    }

    public void update() {
        Action action = ctrl.action();
        direction.rotate(action.turn*STEER_RATE*DT);
        velocity.addScaled(direction, MAG_ACC * DT * action.thrust);
        velocity.mult(DRAG);
        position.addScaled(velocity, DT);
        position.wrap(FRAME_WIDTH, FRAME_HEIGHT);

        if (action.thrust != 0) thrusting = true;
        else thrusting = false;

        if(action.shoot){
            if(System.currentTimeMillis()-time > shootdelay){
                time = System.currentTimeMillis();
                mkBullet();
                action.shoot = false;
            }

        }


    }

    private void mkBullet(){
        Bullet bullet = new Bullet(this, bulletlife);
        this.bullet = bullet;
    }

    public void draw(Graphics2D g){
        AffineTransform at = g.getTransform();
        g.translate(position.x, position.y);
        double rot = direction.angle() + Math.PI / 2;
        g.rotate(rot);
        g.scale(5, 5);
        g.setColor(COLOR);
        g.fillPolygon(XP, YP, XP.length);
        if (thrusting) {
            g.setColor(Color.yellow);
            g.fillPolygon(XPTHRUST, YPTHRUST, XPTHRUST.length);
            g.setColor(Color.red);
            g.fillPolygon(XPTHRUST2, YPTHRUST2, XPTHRUST2.length);
        }



        g.setTransform(at);

    }

    @Override
    int radius() {
        return RADIUS;
    }
}