114 lines
2.5 KiB
JavaScript
114 lines
2.5 KiB
JavaScript
'use strict'
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const uuid = require('uuid').v4
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const log = require('../log')('seq')
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/** Object sequence features */
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const sequence = {};
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sequence._state = {
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arr : [],
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active : false,
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paused : false,
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frame: false,
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delay : false,
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count : 0,
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stop : null
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}
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sequence._loop = {
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arr : [],
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count : 0,
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max : 0
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}
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sequence.start = function (options, cb) {
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if (sequence._state.active) {
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return false
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}
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sequence._state.active = true
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sequence._state.count = 0
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if (options.arr) {
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sequence._state.arr = options.arr
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}
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if (options.loop) {
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sequence._loop.arr = options.loop
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sequence._loop.count = 0
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}
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if (options.maxLoop) {
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sequence._loop.max = options.maxLoop
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} else {
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sequence._loop.max = 0
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}
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sequence._state.stop = cb
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sequence.step()
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sequence._state.id = uuid()
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return sequence._state.id
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}
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sequence.setStop = function () {
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sequence._state.active = false
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}
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sequence.stop = function () {
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sequence._state.active = false
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sequence._state.count = 0
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sequence._state.arr = []
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sequence._loop.count = 0
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sequence._loop.max = 0
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sequence._loop.arr = []
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if (sequence._state.stop) sequence._state.stop()
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sequence._state.stop = null
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}
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sequence.pause = function () {
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sequence._state.paused = true
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}
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sequence.resume = function () {
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sequence._state.paused = false
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sequence.step()
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}
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sequence.step = function () {
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if (sequence._state.active && !sequence._state.paused) {
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if (sequence._state.arr.length > 0) {
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if (sequence._state.count > sequence._state.arr.length - 1) {
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return sequence.stop()
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}
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log.info('step', { count : sequence._state.count, id : sequence._state.id })
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return sequence._state.arr[sequence._state.count](() => {
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sequence._state.count++
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sequence.step()
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})
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} else if (sequence._loop.arr.length > 0) {
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if (sequence._state.count > sequence._loop.arr.length - 1) {
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sequence._state.count = 0
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sequence._loop.count++
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}
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if (sequence._loop.max > 0 && sequence._loop.count > sequence._loop.max) {
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return sequence.stop()
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}
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log.info('step', { count : sequence._state.count, id : sequence._state.id })
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return sequence._loop.arr[sequence._state.count](() => {
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sequence._state.count++
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sequence.step()
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})
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} else{
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return sequence.stop()
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}
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} else if (sequence._state.paused) {
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log.info('step', 'Sequence paused', { loop : sequence._loop.count, count : sequence._state.count })
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} else if (!sequence._state.active) {
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log.info('step', 'Sequence stopped', { loop : sequence._loop.count, count : sequence._state.count })
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}
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}
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module.exports = sequence |