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# psn-js
js implementation of the [PosiStageNet protocol](https://github.com/vyv/psn-cpp/blob/master/doc/PosiStageNetprotocol_v2.03_2019_09_09.pdf)


## Install
`npm install --save @jwetzell/posistagenet`

## Usage

### Decode - [example](./examples/psn_client.js)
```
const { Decoder } = require('@jwetzell/posistagenet')
const decoder = new Decoder()

const buffer = Buffer.from('source PSN packets from somewhere')

decoder.decode(buffer)

// data from PSN Info packets
console.log(decoder.info)

// data from PSN Data packets
console.log(decoder.data)

```

### Encode - [example](./examples/psn_server.js)
```
const { Encoder, Tracker } = require('@jwetzell/posistagenet')
const encoder = new Encoder('Server Name', 2,3) //server name, version high, version low

const trackers = []

const tracker = new Tracker(1,'Tracker 1') // id, name
tracker.setPos(1.0,1.0,1.0) // x, y, z

trackers.push(tracker)

const timestamp = 1;


// these two calls return an array of Buffers due to potential splitting that might take place because of max UDP packet size
const dataPackets = encoder.getDataPackets(timestamp, trackers)
const infoPackets = encoder.getInfoPackets(timestamp, trackers)

dataPackets.forEach((dataPacket)=>{
    console.log('send packet somehow')
    console.log(dataPacket.toString('hex'))
})

infoPackets.forEach((infoPacket)=>{
    console.log('send packet somehow')
    console.log(infoPacket.toString('hex'))
})

```