第一人称视角的转换 - 达人(沉默之鼓)

2006/02/23 | 第一人称视角的转换
类别(Flash) | 评论(0) | 阅读(108) | 发表于 16:43: up：前进
down:后退
left:左转
right:右转

obj = {x:200, y:1, z:100};
//所在位置
mc = _root.mc.attachMovie("dummy", "dm", 0);
py = 0;
px = 0;
speed = 10;
d = 600;
fz = 0;
fx = 0;
fy = 0;
rx = ry=rz=0;
radio = 0;
onEnterFrame = function () {
   if (Key.isDown(Key.LEFT)) {
       radio -= 0.07;
   } else if (Key.isDown(Key.RIGHT)) {
       radio += 0.07;
   }
   sin = Math.sin(radio);
   cos = Math.cos(radio);
   if (Key.isDown(Key.UP)) {
       //rx -= cos*speed;
       //rz -= sin*speed;
       rx -= sin*speed;//
       ry=ry;
       rz -= cos*speed;//深度减少
   } else if (Key.isDown(Key.DOWN)) {
       //rx += cos*speed;
       //rz += sin*speed;
       rx += sin*speed;//
       ry=ry
       rz += cos*speed;//深度增加
   }
   //trace(rx)
   fx = obj.x+rx;
   fy = obj.y+ry;
   fz = obj.z+rz;
   px = fx*cos-fz*sin;
   py = fy;
   pz = fx*sin+fz*cos;
   rad = d/(pz);
   cx = px*rad;
   cy = py*rad;
   if (cy>0) {
       mc._x = cx;
       mc._y = cy;
       mc._xscale = mc._yscale=rad*100;
   }
};; 0