package net.minecraft.util;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
@SideOnly(Side.CLIENT)
public class Timer
{
/** The number of timer ticks per second of real time */
float ticksPerSecond;
/**
* The time reported by the high-resolution clock at the last call of updateTimer(), in seconds
*/
private double lastHRTime;
/**
* How many full ticks have turned over since the last call to updateTimer(), capped at 10.
*/
public int elapsedTicks;
/**
* How much time has elapsed since the last tick, in ticks, for use by display rendering routines (range: 0.0 -
* 1.0). This field is frozen if the display is paused to eliminate jitter.
*/
public float renderPartialTicks;
/**
* A multiplier to make the timer (and therefore the game) go faster or slower. 0.5 makes the game run at half-
* speed.
*/
public float timerSpeed = 1.0F;
/**
* How much time has elapsed since the last tick, in ticks (range: 0.0 - 1.0).
*/
public float elapsedPartialTicks = 0.0F;
/**
* The time reported by the system clock at the last sync, in milliseconds
*/
private long lastSyncSysClock;
/**
* The time reported by the high-resolution clock at the last sync, in milliseconds
*/
private long lastSyncHRClock;
private long field_74285_i;
/**
* A ratio used to sync the high-resolution clock to the system clock, updated once per second
*/
private double timeSyncAdjustment = 1.0D;
public Timer(float par1)
{
this.ticksPerSecond = par1;
this.lastSyncSysClock = Minecraft.getSystemTime();
this.lastSyncHRClock = System.nanoTime() / 1000000L;
}
/**
* Updates all fields of the Timer using the current time
*/
public void updateTimer()
{
long i = Minecraft.getSystemTime();
long j = i - this.lastSyncSysClock;
long k = System.nanoTime() / 1000000L;
double d0 = (double)k / 1000.0D;
if (j <= 1000L && j >= 0L)
{
this.field_74285_i += j;
if (this.field_74285_i > 1000L)
{
long l = k - this.lastSyncHRClock;
double d1 = (double)this.field_74285_i / (double)l;
this.timeSyncAdjustment += (d1 - this.timeSyncAdjustment) * 0.20000000298023224D;
this.lastSyncHRClock = k;
this.field_74285_i = 0L;
}
if (this.field_74285_i < 0L)
{
this.lastSyncHRClock = k;
}
}
else
{
this.lastHRTime = d0;
}
this.lastSyncSysClock = i;
double d2 = (d0 - this.lastHRTime) * this.timeSyncAdjustment;
this.lastHRTime = d0;
if (d2 < 0.0D)
{
d2 = 0.0D;
}
if (d2 > 1.0D)
{
d2 = 1.0D;
}
this.elapsedPartialTicks = (float)((double)this.elapsedPartialTicks + d2 * (double)this.timerSpeed * (double)this.ticksPerSecond);
this.elapsedTicks = (int)this.elapsedPartialTicks;
this.elapsedPartialTicks -= (float)this.elapsedTicks;
if (this.elapsedTicks > 10)
{
this.elapsedTicks = 10;
}
this.renderPartialTicks = this.elapsedPartialTicks;
}
}