Mekanism-tilera-Edition/common/buildcraft/api/core/SafeTimeTracker.java
2013-08-25 21:36:29 +08:00

46 lines
1.1 KiB
Java

/**
* Copyright (c) SpaceToad, 2011 http://www.mod-buildcraft.com
*
* BuildCraft is distributed under the terms of the Minecraft Mod Public License
* 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.api.core;
import net.minecraft.world.World;
public class SafeTimeTracker {
private long lastMark = Long.MIN_VALUE;
private long duration = -1;
/**
* Return true if a given delay has passed since last time marked was called
* successfully.
*/
public boolean markTimeIfDelay(World world, long delay) {
if (world == null)
return false;
long currentTime = world.getTotalWorldTime();
if (currentTime < lastMark) {
lastMark = currentTime;
return false;
} else if (lastMark + delay <= currentTime) {
duration = currentTime - lastMark;
lastMark = currentTime;
return true;
} else
return false;
}
public long durationOfLastDelay() {
return duration > 0 ? duration : 0;
}
public void markTime(World world) {
lastMark = world.getTotalWorldTime();
}
}