Question

我正在尝试将不同对象的多个实例添加到另一个对象的数组中。然而，我遇到了麻烦。

*Creates the player*
function Player(){
    this.name = "";
    this.status = "Alive";
    this.primaryClass = null;
    this.secondaryClass = null;
    this.strength = 0;
    this.stamina = 0;
    this.mystica = 0;
    this.health = 0;
    this.primaryWeapon = null;
    this.offHand = null;
    this.accuracy = 0;
    this.block = 0;
    this.baseDamage = 0;
    this.maxDamage = 0;
    this.attackSpeed = 0;
    this.shield = null;
    this.armor = null;
    this.armorRating = 0;
    this.exp = 0;
}
*Creates the sword weapon*
function LongSword(){
    this.name = "";
    this.attackSpeed = 1;
    this.baseDamage = 10;
    this.maxDamage = 15;
    this.durability = 100;
    this.block = 5;
    this.exp = 0;
}
*Creates the Long Sword skills*
function Stab(){
    this.name = "Stab";
    this.status = "Unlocked";
    this.damage = 0;
    this.damageModifier = 0.75;
    this.cooldown = 5;
    this.exp = 0;
    this.desc = "Stabs your opponent for an additional " +parseInt(this.damageModifier * 100) +"% of your base damage.";
}
*Equips the Player weapon(s)*
Player.prototype.equipWeapon = function equipWeapon(main, offHand){
    if(this.primaryClass.dualWield){
        this.primaryWeapon = main;
        if(offHand){
            this.offHand = offHand;
            this.baseDamage += (this.strength + (main.baseDamage + (offHand.baseDamage / 2))) / 10;
            this.maxDamage += (this.strength + (main.maxDamage + (offHand.maxDamage / 2))) / 5;
            this.attackSpeed += main.attackSpeed + (offHand.attackSpeed / 2);
            this.block += main.block + offHand.block;
        }
    }
    else{
        this.primaryWeapon = main;
        this.offHand = null;
        this.baseDamage += (this.strength + main.baseDamage) / 10;
        this.maxDamage += (this.strength + main.maxDamage) / 5;
        this.attackSpeed += main.attackSpeed;
        this.block += main.block;
    }

    if(!this.primaryClass.dualWield && offHand){
        console.log("Your class can not wield dual weapons.");
    }
}
*Equips the Weapon skills*
LongSword.prototype.skills = function skills(skill){
    this.skills = [];
    skill.damage = parseFloat((this.baseDamage / skill.damageModifier).toFixed(1));
    this.skills.push(skill);
}

这些对象构成了我尝试做的事情的基本要素。所以，当我去实例化每一个时，

var Robert = new Player();
Robert.equipWeapon(new LongSword());
Robert.primaryWeapon.skills(new Stab());

我得到了我想要的结果。但是，如果我尝试添加Stab()的另一个实例，使其看起来像这样

var Robert = new Player();
Robert.equipWeapon(new LongSword());
Robert.primaryWeapon.skills(new Stab());
Robert.primaryWeapon.skills(new Stab());

我得到TypeError：Robert.primaryWeapon.skills is not a function。为什么它会正常工作一次，但不是第二次。我试图实现的最终结果是，如果安慰Robert.primaryWeapon.skills，我应该看到Stab对象的两个实例。

Answer 1

Longsword原型中存在两个问题。

首先，您将使用存储skill数组替换您的函数，该数组具有相同的名称：

LongSword.prototype.skills = function skills(skill){
    this.skills = []; //Overrides your function
    ...

导致您的错误Robert.primaryWeapon.skills is not a function，导致一旦您调用它，它确实是一个数组。

要修复它，只需更改其中一个函数或数组的名称。

其次，每次调用函数时，都会将skills数组初始化为空数组，每次都重置它。你应该用Longsword的protoype初始化它。

以下是这些修补程序（fiddle with it if you want）的示例：

function LongSword(){
   this.skills = [];
   ...

LongSword.prototype.addSkill = function skills(skill){
    ...

然后，您将能够添加多种技能：

var Robert = new Player();
Robert.equipWeapon(new LongSword());
Robert.primaryWeapon.addSkill(new Stab());
Robert.primaryWeapon.addSkill(new Stab());

将对象的多个实例添加到另一个对象的数组中;

1 个答案: