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46 lines
1.7 KiB
46 lines
1.7 KiB
import { PREVIEW } from "cc/env";
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/**
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* 单例工具
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*/
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export default class InstanceT {
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/** 单例属性名 */
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private static InstanceKey: symbol = Symbol();
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/** 单例属性名 */
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private static InstanceName: string = 'instance';
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/**
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* 单例类装饰器
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* @param _ifPassive 是否被动访问的时候创建实例，为false的话会立即创建出实例
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* ! 被装饰的类的构造方法不能时public类型的
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*/
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public static DecorateInstance(_ifPassive: boolean = true) {
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return function (target: any) {
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if (_ifPassive) {
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//添加一个监听属性
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Object.defineProperty(target, InstanceT.InstanceName, {
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get: function () {
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if (!target[InstanceT.InstanceKey]) {
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target[InstanceT.InstanceKey] = new target();
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if (PREVIEW) {
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window[target.name] = target[InstanceT.InstanceKey];
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}
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if (typeof target[InstanceT.InstanceKey].initLogic == "function") {
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target[InstanceT.InstanceKey].initLogic();
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}
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}
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return target[InstanceT.InstanceKey];
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}
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});
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} else {
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target[InstanceT.InstanceName] = new target();
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if (PREVIEW) {
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window[target.name] = target[InstanceT.InstanceName];
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}
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if (typeof target[InstanceT.InstanceName].initLogic == "function") {
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target[InstanceT.InstanceName].initLogic();
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}
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}
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}
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}
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}
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