高级游戏制作：Flash制作物体弹跳电脑游戏 (1)

【 tulaoshi.com - FLASH 】

　　Flash制作物体弹跳电脑游戏，这是一种背景不动的一个物体可以弹跳，可以左右走动的小游戏。比较基础的游戏。在文章的最后提供所有演示的Flash源文件。

看不到动画效果的朋友请去这里观看：http://bbs./thread-99274-1-1.html

　　启动Flash，首先修改文档属性。

　　首先制作两个电影剪辑一个是背景，绘制一个矩形小块来当背景。加入AS为：stop()，让它开始就停止。

　　另外一个是运动的物体，给大家截图如下。

回到主场景，我们用Actionscript来实现其它效果。在主场景的第一帧直接加入下面代码：  xspeed = 0;
yspeed = 0;
max_yspeed = 16;
gravity = 1;
walk_speed = 4;
level = new Array();
_root.createEmptyMovieClip("lev", _root.getNextHighestDepth());
level[0] = new Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
level[1] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[2] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[3] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[4] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[5] = new Awww.tulaoshi.comrray(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1);
level[6] = new Array(1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[7] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[8] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[9] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[10] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[11] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[12] = new Array(1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[13] = new Array(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
level[14] = new Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
for (y=0; y=14; y++) {
 for (x=0; x=24; x++) {
  if (level[y][x] != 0) {
   place_brick = lev.attachMovie("block", "block_"+lev.getNextHighestDepth(), lev.getNextHighestDepth(), {_x:x*20+10, _y:y*20+10});
   place_brick.gotoAndStop(level[y][x]);
  }
 }
}
_root.attachMovie("player", "player", _root.getNextHighestDepth(), {_x:40, _y:40});
player.onEnterFrame = function() {
 yspeed += gravity;
 if (yspeedmax_yspeed) {
  yspeed = max_yspeed;
 }
 if (Key.isDown(Key.LEFT)) {
  xspeed = -walk_speed;
 }
 if (Key.isDown(Key.RIGHT)) {
  xspeed = walk_speed;
 }
 while (_root.lev.hitTest(this._x, this._y+this._height/2-1+yspeed, true)) {
  yspeed--;
 }
 while (_root.lev.hitTest(this._x-this._width/2+1+xspeed, this._y, true)) {
  xspeed++;
 }
 while (_root.lev.hitTest(this._x+this._width/2-1+xspeed, this._y, true)) {
  xspeed--;
 }
 this._y += yspeed;
 this._x += xspeed;
 xspeed = 0;
};

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　　上面代码实现的效果是会出现一幅不动的背景。效果如下。