Rune Harlyk
35 lines
880 B
TypeScript
35 lines
880 B
TypeScript
import { writable } from 'svelte/store'
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import { IMUData } from '$lib/platform_shared/message'
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import { socket } from './socket'
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const maxIMUData = 100
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export const imu = (() => {
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const { subscribe, update } = writable<IMUData[]>([])
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let unsubscribe: (() => void) | null = null
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let listenerCount = 0
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const addData = (content: IMUData) => {
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update(data => [...data, content].slice(-maxIMUData))
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}
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return {
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subscribe,
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addData,
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listen: () => {
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listenerCount++
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if (!unsubscribe) {
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unsubscribe = socket.on(IMUData, addData)
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}
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},
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stop: () => {
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listenerCount = Math.max(0, listenerCount - 1)
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if (listenerCount === 0 && unsubscribe) {
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unsubscribe()
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unsubscribe = null
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}
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}
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}
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})()
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