package com.flaremicro.visualforecast;

import java.util.concurrent.locks.LockSupport;

import com.flaremicro.visualforecast.interfaces.Tickable;

public class TickThread implements Runnable {
	private final Tickable tickable;
	private boolean running = true;
	private final long sleepNanos;
	
	//private long nextTick = 0;

	TickThread(Tickable tickable, long sleepNanos) {
		this.tickable = tickable;
		this.sleepNanos = sleepNanos;
	}
	
	TickThread(Tickable tickable, int ticksPerSecond) {
		this(tickable, (long) ((1/(double)ticksPerSecond) * 1000000000L));
	}

	public void end() {
		this.running = false;
	}

	public void run() {
		long nanosLost = 0;
		while (running) {
			/*while(System.nanoTime() < nextTick)
			{
				try
				{
					Thread.sleep(1);
				}
				catch (InterruptedException e)
				{
					e.printStackTrace();
				}
			}
			nextTick = System.nanoTime() + sleepNanos;
			tickable.tick();*/
			tickable.tick();
			nanosLost -= System.nanoTime();
			//Unnecessary conditional?
			//if(sleepNanos+nanosLost > 0)
			LockSupport.parkNanos(sleepNanos+nanosLost);
			nanosLost = System.nanoTime();
		}
	}
}