sprite.java

来自「j2me源代码」· Java 代码 · 共 52 行

package pinball;

import javax.microedition.lcdui.Graphics;

public class Sprite {
    public int x;
    public int y;
    public int width;
    public int height;
    public int shadow;

    public Sprite() {
        shadow = Math.max(2, Screen.width / 60);
    }

    public int getCenterX() {
        return x + width / 2;
    }

    public int getCenterY() {
        return y + height / 2;
    }

    public void moveTo(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public void moveBy(int x, int y) {
        this.x += x;
        this.y += y;
    }

    public void paint(Graphics g) {}

    public void paintShadow(Graphics g) {}

    public boolean intersects(Sprite other) {
        int xw = x + width;
        int yh = y + height;
        int oxw = other.x + other.width;
        int oyh = other.y + other.height;

        return x >= other.x && x < oxw && y >= other.y && y < oyh
               || xw >= other.x && xw < oxw && y >= other.y && y < oyh
               || x >= other.x && x < oxw && yh >= other.y && yh < oyh
               || xw >= other.x && xw < oxw && yh >= other.y && yh < oyh;
    }

}