未捕获的TypeError:无法读取未定义的属性"set" [英] Uncaught TypeError: Cannot read property 'set' of undefined

问题描述

我已经像这样构建了一个构造函数(并将其放在预加载函数上方)

I've made a constructor (and put it above preload function) like this

character = function(CharX,CharY,CharSpeed){
this.x = CharX ;
this.y =  CharY;
this.speed = CharSpeed;
this.AddSpriteSheet = function (SprX,SprY,key) {
this.character = game.add.sprite(SprX,SprY,key);}
};

稍后我添加的创建功能

var Char1 = new character(game.world.width*0.5,game.world.height*0.5,5);
Char1.AddSpriteSheet(game.world.width*0.5,game.world.height*0.5,'character');
Char1.anchor.set(50,50);

控制台读取

未捕获的TypeError:无法读取未定义的属性'set'"

"Uncaught TypeError: Cannot read property 'set' of undefined"

我做错了什么?

使错误更明显

推荐答案

您正在制作一个自定义类来表示字符，但它不是Phaser Sprite，因此它没有任何方法/属性. Sprite会这样做，除非您自己定义它们.如果要创建自己的类来扩展Phaser.Sprite，建议您查看

You're making a custom class to represent a character, but it's not a Phaser Sprite, and therefore it doesn't have any of the methods/properties a Sprite does unless you define them yourself. If you want to create your own class to extend Phaser.Sprite, I suggest you look at this forum post and also this example. Just googling "phaser extend sprite" will help you find some other resources as well.

本质上，您需要执行以下操作:

Essentially, you need to do something like this:

function Character(game, x, y) {   
    Phaser.Sprite.call(this, game, x, y, 'sprite key');   
    // define other properties for your character
}
Character.prototype = Object.create(Phaser.Sprite.prototype);
Character.prototype.constructor = Character;

然后您将所有角色的方法添加到原型中.

And then you would add all of your Character's methods onto the prototype.

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