HeartBeat component

HeartBeat.hx

package nl.stroep.games.components;

import flambe.animation.AnimatedFloat;
import flambe.Component;
import flambe.util.Value;

/**
* @author Mark Knol [http://blog.stroep.nl]
*/
class HeartBeat extends Component
{
    public var beat:Value<Int>;
    public var beatsPerMinute:AnimatedFloat;
    public var ticksPerBeat:Int;
    
    var _current:Float = 0; // seconds
    
    public function new(beatsPerMinute:Int = 80, ticksPerBeat:Int = 4)
    {
        this.ticksPerBeat = ticksPerBeat;
        this.beatsPerMinute = new AnimatedFloat(beatsPerMinute);
        this.beat = new Value<Int>(0);
    }
    
    override public function onUpdate(dt:Float)
    {
        beatsPerMinute.update(dt);
        
        _current += dt;
        beat._ = Std.int((_current % 60) / 60 * beatsPerMinute._) % ticksPerBeat;
    }
}