Question

我的代码可与所有其他模块一起使用，但是JBehaviour给了我这个问题，并且知道我在做什么错，因为看来我做对了一切

完全错误：未捕获的TypeError：类扩展值＃不是构造函数或null 在对象。（C：\ Users \ etern \ Documents \ GameEngine \ src \ engine \ classes \ JBehaviour.js：3）在对象。（C：\ Users \ etern \ Documents \ GameEngine \ src \ engine \ classes \ JBehaviour.js：11）

test_game.js

const {Vector2, GameObject, Rigidbody2d, JBehaviour, Input} = require('./Core')

Core.js

//Structs
const Vector2 = require('./structs/Vector2')

//Classes
const GameObject = require('./classes/GameObject')
const Rigidbody2d = require('./classes/Rigidbody2d')
const JBehaviour = require('./classes/JBehaviour')
const Input = require('./classes/Input')


module.exports = {Vector2, GameObject, Rigidbody2d, JBehaviour, Input}

JBehaviour.js

    const Behaviour = require('./Behaviour')

class JBehaviour extends Behaviour{
    constructor(){
        super('JBehaviour')
    }
}


module.exports = JBehaviour

Behaviour.js

const Component = require('./Component')

class Behaviour extends Component{
    constructor(name){
        super(name)
        this.enabled = true
    }
}

Component.js

const OBJ = require('./Object')
class Component extends OBJ {
    constructor(name){
        super(name)
        this.gameObject = null
        this.tag = null
        this.transform = null
    }

    AssignGameObject(gameObject){
        this.gameObject = gameObject
        this.tag = gameObject.tag
        this.transform = gameObject.transform
    }

    CompareTag(tag){

        return (this.tag === tag)
    }
}

module.exports = Component

Object.js

class OBJ{
    constructor(name){
        this.name = name
    }

    static Destroy(object){
        delete object.name
    }

    static Instantiate(original){

        return new OBJ(original.name)
    }

    ToString(){

        return toString(this.name)
    }
}

module.exports = OBJ

Answer 1

您没有导出Behaviour，因此require('./Behaviour')返回的值是一个空对象。空对象不能从中扩展。

导出Behaviour就像处理JBehaviour一样：

module.exports = Behaviour

未捕获的TypeError：类扩展值＃<Object>不是构造函数或null

1 个答案: