/**
 * File: AlienMissile.java
 * Author: Brian Borowski
 * Date created: January 14, 2013
 * Date last modified: January 21, 2013
 */
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;

public class AlienMissile {
    private final int xPos, speed;
    private float yPos = 0;
    private boolean hitGround;

    private static final Image bombImage;
    private static final int missileWidth, missileHeight;

    static {
        bombImage = Utility.getImage("images/alien_missile.png");
        missileWidth = bombImage.getWidth(null);
        missileHeight = bombImage.getHeight(null);
    }

    public AlienMissile(final int speed, final int x, final int y) {
        xPos = x;
        yPos = y;
        this.speed = speed;
    }

    public boolean getHitGround() {
        return hitGround;
    }

    public void setHitGround(boolean hitGround) {
        this.hitGround = hitGround;
    }

    public int getXPos() {
        return xPos;
    }

    public int getYPos() {
        return (int)yPos;
    }

    public void moveDown(final float elapsedSeconds) {
        yPos += speed * elapsedSeconds;
    }

    public Rectangle getBoundingRectangle() {
        return new Rectangle(
            xPos - (missileWidth >> 1), (int)yPos, missileWidth, missileHeight);
    }

    public void paintComponent(final Graphics g) {
        g.drawImage(bombImage, xPos - (missileWidth >> 1), (int)yPos, null);
    }
}