jmeCapture: src/com/aurellem/capture/RatchetTimer.java annotate

merge laptop changes.

rev	line source
rlm@63	1 package com.aurellem.capture;
rlm@63	2
rlm@63	3 import com.jme3.system.Timer;
rlm@63	4
rlm@63	5 /**
rlm@63	6 * RatchetTimer is the same as IsoTimer, except that it will ensure
rlm@63	7 * that the simulation does not proceed any faster than it would had
rlm@63	8 * NanoTimer been used.
rlm@63	9 *
rlm@63	10 * @author normenhansen, Robert McIntyre
rlm@63	11 */
rlm@63	12
rlm@63	13 public class RatchetTimer extends Timer{
rlm@69	14 private long framerate;
rlm@63	15 private int ticks;
rlm@63	16 private long lastTime = 0;
rlm@63	17
rlm@63	18 public RatchetTimer(float framerate) {
rlm@69	19 this.framerate = (long) framerate;
rlm@63	20 this.ticks = 0;
rlm@63	21 }
rlm@64	22
rlm@64	23 /**
rlm@64	24 * return time in milliseconds
rlm@64	25 */
rlm@63	26 public long getTime() {
rlm@69	27 return ticks;
rlm@63	28 }
rlm@63	29
rlm@63	30 public long getResolution() {
rlm@69	31 return framerate;
rlm@63	32 }
rlm@63	33
rlm@63	34 public float getFrameRate() {
rlm@69	35 return framerate;
rlm@63	36 }
rlm@63	37
rlm@63	38 public float getTimePerFrame() {
rlm@69	39 return (float) (1.0f / framerate);
rlm@63	40 }
rlm@63	41
rlm@63	42 public void update() {
rlm@63	43 long time = System.currentTimeMillis();
rlm@63	44 long difference = time - lastTime;
rlm@63	45 lastTime = time;
rlm@63	46 if (difference < (1.0f / this.framerate) * 1000.0f) {
rlm@63	47 try {
rlm@63	48 Thread.sleep(difference);
rlm@63	49 } catch (InterruptedException ex) {
rlm@63	50 }
rlm@63	51 }
rlm@63	52 this.ticks++;
rlm@63	53 }
rlm@63	54
rlm@63	55 public void reset() {
rlm@63	56 this.ticks = 0;
rlm@63	57 }
rlm@63	58 }
rlm@63	59

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