package code.kalter.longflight;

import java.io.IOException;
import java.util.Vector;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

/**
 * Спрайт - основной графический элемент
 *
 * @author KalterFive
 */
public class Sprite {

    protected final Image image;
    private int positionX;
    private int positionY;

    // события
    private Vector eventListener;

    public Sprite(Image image, int positionX, int positionY) {
        this.image = image;
        this.positionX = positionX;
        this.positionY = positionY;
        eventListener = new Vector(1);
    }

    public Sprite(String path, int positionX, int positionY)
            throws IOException {
        this(Image.createImage(path), positionX, positionY);
    }

    public void paint(Graphics graph) {
        graph.drawImage(image, positionX, positionY, 0);
    }

    public void addEvent(EventListener event) {
        eventListener.addElement(event);
    }

    // попытаться возбудить события
    public void exciteEvent() {
        for (int i = 0; i < eventListener.size(); i++) {
            EventListener event = (EventListener) eventListener.elementAt(i);
            if ((event != null) && (event.is())) {
                event.event();
            }
        }
    }

    public EventListener getEvent(int number)
            throws ArrayIndexOutOfBoundsException {
        return (EventListener) eventListener.elementAt(number);
    }

    // удалить событие без сдвига (то есть оnullить его)
    public void removeEvent(int number)
            throws ArrayIndexOutOfBoundsException {
        eventListener.setElementAt(null, number);
    }

    public boolean isEntrySet(int positionX, int positionY) {
        return (positionX >= this.positionX)
                && (positionX <= this.positionX + getWidth())
                && (positionY >= this.positionY)
                && (positionY <= this.positionY + getHeight());
    }

    public void moveDown(int speed) {
        positionY += speed;
    }

    public void moveRight(int speed) {
        positionX += speed;
    }

    public void moveUp(int speed) {
        moveDown(-speed);
    }

    public void moveLeft(int speed) {
        moveRight(-speed);
    }

    public int getX() {
        return positionX;
    }

    public int getY() {
        return positionY;
    }

    public int getWidth() {
        return image.getWidth();
    }

    public int getHeight() {
        return image.getHeight();
    }

    protected void setX(int x) {
        this.positionX = x;
    }

    protected void setY(int y) {
        this.positionY = y;
    }
}