tournaments

"use strict";

class Users {
    constructor(id) {
        this.id = id;
    }

    static create(id) {
        this.all.push(new this(id));
    }
}

Users.all = [];

class Battles {
    constructor(id) {
        this.id = id;
        this.round = this.constructor.round;
    }

    static create(id) {
        this.all.push(new this(id));
    }
}

Battles.all = [];
Battles.round = 1;

for(var i=1;i<=8;i++) {
    Users.create(i);
}

var battleId = 1;
var battlesInRound = Users.all.length / 2;

for(;battlesInRound >= 1;battlesInRound /= 2, Battles.round++) {
    console.log(['battlesInRound', battlesInRound]);
    for(var i=battlesInRound;i>=1;i--, battleId++) {
        console.log(['battleId', battleId]);
        console.log(['round', Battles.round]);
        Battles.create(battleId);
    }
}

console.log(Battles.all);