/**
 * File: Missile.java
 * Author: Brian Borowski
 * Date created: August 1, 2011
 * Date last modified: January 1, 2013
 */
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;

public class Missile {
    private final int xPos, speed;
    private float yPos;
    private static final Image missileImage;
    private static int missileWidth, missileHeight;

    static {
        // Missile image courtesy of Ryan Stillings.
        missileImage = Utility.getImage("images/missile.png");
        missileWidth = missileImage.getWidth(null);
        missileHeight = missileImage.getHeight(null);
    }

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

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

    public void moveUp(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(missileImage, xPos - (missileWidth >> 1), (int)yPos, null);
    }
}