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// A portable script to find the sender when the server websocket opens (by cursor movement)
const vec = require('../utils/vec');
module.exports = function identify(){
// `this` should be Socket instance.
// initOnce and init should be functions that act like they describe; initOnce runs once per program execution and init whenever the socket turns back on
let self = this;
self.on('open', ()=>{
// "Pings" the server with a cursor location which is detected and saved by identity()
let coords = [Math.floor(Math.random()*100000+16), Math.floor(Math.random()*1000000+16)];
self.cursor(coords);
self.on('cursor', detect);
function detect(pos, send){
if (vec.equals(pos[0],coords)){
self.off('cursor', detect);
identity(send);
}
}
});
// Calls initOnce and init on successful identification.
let initialized = false;
function identity(send){
if (! initialized){
initialized = true;
self.emit('initOnce');
}
self.emit('init', send);
}
}
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