@smoud/tiny/src/app/Timer.js

Fast and tiny JavaScript library for HTML5 game and playable ads creation.

import { registerSystem } from './registrar';

var noop = function () {};

var Timer = function (autoStart, autoRemove, game, cb, ctx, delay, loop, n, oncomplete) {
    this.game = game;
    this.cb = cb || noop;
    this.ctx = ctx || this;
    this.delay = delay == undefined ? 1000 : delay;
    this.loop = loop;
    this.count = n || 0;
    this.repeat = this.count > 0;
    this.running = !!autoStart;
    this._lastFrame = 0;
    this.autoRemove = autoRemove;
    this.onComplete = oncomplete || noop;
};

Timer.prototype = {
    start: function () {
        this.running = true;
    },
    pause: function () {
        this.running = false;
    },
    stop: function () {
        this.running = false;
        this._lastFrame = 0;
    },
    update: function (deltaTime) {
        if (this.running) {
            this._lastFrame += deltaTime;
            if (this._lastFrame >= this.delay) {
                this.cb.call(this.ctx);
                this._lastFrame = 0;
                if (this.repeat) {
                    this.count--;
                    if (this.count === 0) {
                        this.running = false;
                        this.autoRemove && this.game.timer.remove(this);
                        this.onComplete();
                    }
                } else if (!this.loop) {
                    this.running = false;
                    this.autoRemove && this.game.timer.remove(this);
                }
            }
        }
    }
};

var TimerCreator = function (game) {
    this.game = game;
    this.list = [];
    this.autoStart = true;
    this.autoRemove = true;
};

TimerCreator.prototype = {
    update: function (delta) {
        for (var i = 0; i < this.list.length; i++) {
            this.list[i].update(delta);
        }
    },
    removeAll: function () {
        for (var i = 0; i < this.list.length; i++) {
            this.list[i].stop();
        }

        this.list = [];
    },
    remove: function (tm) {
        var indexOf = this.list.indexOf(tm);
        if (indexOf > -1) {
            tm.stop();
            this.list.splice(indexOf, 1);
        }
    },
    add: function (delay, cb, ctx, autostart, autoremove) {
        autostart = autostart != undefined ? autostart : this.autoStart;
        autoremove = autoremove != undefined ? autoremove : this.autoRemove;

        var timer = new Timer(autostart, autoremove, this.game, cb, ctx, delay);
        this.list.push(timer);
        return timer;
    },
    loop: function (delay, cb, ctx, autostart, autoremove) {
        autostart = autostart != undefined ? autostart : this.autoStart;
        autoremove = autoremove != undefined ? autoremove : this.autoRemove;

        var timer = new Timer(autostart, autoremove, this.game, cb, ctx, delay, true);
        this.list.push(timer);
        return timer;
    },
    repeat: function (delay, n, cb, ctx, autostart, autoremove, complete) {
        autostart = autostart != undefined ? autostart : this.autoStart;
        autoremove = autoremove != undefined ? autoremove : this.autoRemove;

        var timer = new Timer(autostart, autoremove, this.game, cb, ctx, delay, false, n, complete);
        this.list.push(timer);
        return timer;
    },
    destroy: function () {
        this.removeAll();
    }
};

registerSystem('timer', TimerCreator);

export { TimerCreator, Timer };