40 lines
1.0 KiB
TypeScript
40 lines
1.0 KiB
TypeScript
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module es {
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/**
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* 实体系统以一定的时间间隔进行处理
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*/
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export abstract class IntervalSystem extends EntitySystem {
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/**
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* 累积增量以跟踪间隔
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*/
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protected acc: number = 0;
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/**
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* 更新之间需要等待多长时间
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*/
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private readonly interval: number = 0;
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private intervalDelta: number = 0;
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constructor(matcher: Matcher, interval: number) {
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super(matcher);
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this.interval = interval;
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}
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protected checkProcessing() {
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this.acc += Time.deltaTime;
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if (this.acc >= this.interval) {
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this.acc -= this.interval;
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this.intervalDelta = (this.acc - this.intervalDelta);
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return true;
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}
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return false;
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}
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/**
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* 获取本系统上次处理后的实际delta值
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*/
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protected getIntervalDelta() {
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return this.interval + this.intervalDelta;
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}
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}
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}
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