screendrawer.java

一款JAVA网络格斗游戏

/**
   游戏绘制类
   Download by http://www.codefans.net
 **/

package game.multiplayer;

import javax.microedition.lcdui.*;

public class ScreenDrawer {

  //清除绘图屏幕
  public static void clearScreen(Graphics g, int width, int height) {
    g.setColor(255, 255, 255);
    g.fillRect(0, 0, width, height);
  }

  //绘制图片
  public static void drawImage(Graphics g, Image image, int x, int y) {
    g.drawImage(image, x, y, 0);
  }

  //绘制区域图片
  public static void drawImage(Graphics g, Image image, int x, int y, int width,
                               int height, int widthIndex, int heightIndex,
                               boolean isLeft) {

    Image boyImage = Image.createImage(width, height);

    Graphics offScreenG = boyImage.getGraphics();
    offScreenG.drawImage(image, -width * (widthIndex - 1),
                         -height * (heightIndex - 1), 0);
    //获取图片的长度与宽度
    int imgWidth = boyImage.getWidth();
    int imgHeight = boyImage.getHeight();

    int[] rgb = new int[imgWidth * imgHeight];
    //获取当前图片的象素RGB数组
    boyImage.getRGB(rgb, 0, imgWidth, 0, 0, imgWidth, imgHeight);

    //将背景象素置为透明
    for (int i = 0; i < rgb.length; ++i) {
      if (rgb[i] == 0xfffcfcff) {
        rgb[i] = rgb[i] & 0x00ffffff;
      }
    }

    if (isLeft) {
      g.drawImage(Image.createRGBImage(rgb, imgWidth, imgHeight, true), x, y, 0);

    }
    else {
      g.drawImage(Image.createRGBImage(rgb, imgWidth, imgHeight, true), x, y, 3);
    }

  }

  //绘制字符串
  public static void drawString(Graphics g, int x, int y, String s) {
    g.setColor(0xff0000);
    g.drawString(s, x, y, 0);
  }

}