src/code/kalter/longflight/Sprite.java

   1 package code.kalter.longflight;
   2
   3 import java.io.IOException;
   4 import java.util.Vector;
   5 import javax.microedition.lcdui.Graphics;
   6 import javax.microedition.lcdui.Image;
   7
   8 /**
   9  * Спрайт - основной графический элемент
  10  *
  11  * @author KalterFive
  12  */
  13 public class Sprite {
  14
  15     protected final Image image;
  16     private int positionX;
  17     private int positionY;
  18
  19     // события
  20     private Vector eventListener;
  21
  22     public Sprite(Image image, int positionX, int positionY) {
  23         this.image = image;
  24         this.positionX = positionX;
  25         this.positionY = positionY;
  26         eventListener = new Vector(1);
  27     }
  28
  29     public Sprite(String path, int positionX, int positionY)
  30             throws IOException {
  31         this(Image.createImage(path), positionX, positionY);
  32     }
  33
  34     public void paint(Graphics graph) {
  35         graph.drawImage(image, positionX, positionY, 0);
  36     }
  37
  38     public void addEvent(EventListener event) {
  39         eventListener.addElement(event);
  40     }
  41
  42     // попытаться возбудить события
  43     public void exciteEvent() {
  44         for (int i = 0; i < eventListener.size(); i++) {
  45             EventListener event = (EventListener) eventListener.elementAt(i);
  46             if ((event != null) && (event.is())) {
  47                 event.event();
  48             }
  49         }
  50     }
  51
  52     public EventListener getEvent(int number)
  53             throws ArrayIndexOutOfBoundsException {
  54         return (EventListener) eventListener.elementAt(number);
  55     }
  56
  57     // удалить событие без сдвига (то есть оnullить его)
  58     public void removeEvent(int number)
  59             throws ArrayIndexOutOfBoundsException {
  60         eventListener.setElementAt(null, number);
  61     }
  62
  63     public boolean isEntrySet(int positionX, int positionY) {
  64         return (positionX >= this.positionX)
  65                 && (positionX <= this.positionX + getWidth())
  66                 && (positionY >= this.positionY)
  67                 && (positionY <= this.positionY + getHeight());
  68     }
  69
  70     public void moveDown(int speed) {
  71         positionY += speed;
  72     }
  73
  74     public void moveRight(int speed) {
  75         positionX += speed;
  76     }
  77
  78     public void moveUp(int speed) {
  79         moveDown(-speed);
  80     }
  81
  82     public void moveLeft(int speed) {
  83         moveRight(-speed);
  84     }
  85
  86     public int getX() {
  87         return positionX;
  88     }
  89
  90     public int getY() {
  91         return positionY;
  92     }
  93
  94     public int getWidth() {
  95         return image.getWidth();
  96     }
  97
  98     public int getHeight() {
  99         return image.getHeight();
 100     }
 101
 102     protected void setX(int x) {
 103         this.positionX = x;
 104     }
 105
 106     protected void setY(int y) {
 107         this.positionY = y;
 108     }
 109 }