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在我的游戏中，我有一个角色类：

var NPC = function(isometry,timer,canvas,tile,tileMap,scrollPosition,
grid,spritesheet, r1, c1, currentHero, hh, hw,index) {

this.index = index;   
....
NPC.prototype.w = new Worker('astar.js');

this.w.onmessage = function(e) {

//process worker results, 'index' is strongly needed
// e is data from worker
//it draws path for the character on the common tileMap:

tileMap[e.data[i].x][e.data[i].y] = index;
}

然后在主程序中创建该类的两个对象：

var protagonist = new NPC(.....,0);
var char1 = new NPC(.....,10);

问题是他们用相同的索引= 10绘制路径。我试过：

  1. 改为使用 this.index，但它在 this.w.onmessage 中变为未定义
  2. 称之为“NPC.prototype.w.onmessage = function(e) {”——同样的故事

  3. 声明单独的函数：

    NPC.prototype.wonmessage=function(e) {....} this.w.onmessage = this.wonmessage();

Error: "e is undefined".

我应该怎么做才能将所有数据正确发送到函数？

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