var TickTime = 1000;
var DT = 0;
var LTime = 0;
var CPUCLK = null:

class Clock{
  constructor(){}

  get hz(){return Math.floor(1000 / TickTime);}
  set hz(hz){
    if(hz >= 1)
      TickTime = 1000 / hz;
  }

  get wired(){return (CPUCLK !== null);}
  set wire(clk){
    if(clk == null || typeof clk === 'function')
      CPUCLK = clk;
  }

  tick(){
    let ctime = Date.getTime();
    if(LTime !== 0){
      DT += ctime - LTime;
      while(DT > TickTime){
        if (CPUCLK)
          CPUCLK();
        DT -= TickTime
      }
    }
    LTime = ctime;
  }
}


module.exports = Clock;