TimeUtils.java

package net.thechunk.chunklib.util;

import com.google.common.base.Preconditions;

import java.util.concurrent.TimeUnit;

/**
 * Time related utility class.
 */
public class TimeUtils {

    /**
     * One Minecraft tick in terms of real time (50 milliseconds).
     */
    public static final long ONE_TICK_IN_MILLISECONDS = 50;

    /**
     * Converts a real time value into Minecraft ticks.
     *
     * @param value the amount of time
     * @param from the unit of time
     * @return the amount of time specified in ticks
     */
    public static long toMinecraftTicks(long value, TimeUnit from) {
        long inMs = from.toMillis(value);
        Preconditions.checkArgument(inMs >= ONE_TICK_IN_MILLISECONDS, value + " " + from + " is smaller than 50 ms! (" + inMs + ")");
        return inMs / ONE_TICK_IN_MILLISECONDS;
    }

    /**
     * Converts a Minecraft tick time value into a real time value.
     *
     * @param value the amount of time
     * @param to the desired amount of time
     * @return the amount of ticks specified in real time
     */
    public static long fromMinecraftTicks(long value, TimeUnit to) {
        long minecraftInMs = value * ONE_TICK_IN_MILLISECONDS;
        return to.convert(minecraftInMs, TimeUnit.MILLISECONDS);
    }
}