Factions3/src/main/java/com/massivecraft/factions/engine/EnginePower.java

package com.massivecraft.factions.engine;

import com.massivecraft.factions.entity.BoardColl;
import com.massivecraft.factions.entity.Faction;
import com.massivecraft.factions.entity.MConf;
import com.massivecraft.factions.entity.MFlag;
import com.massivecraft.factions.entity.MPlayer;
import com.massivecraft.factions.event.EventFactionsPowerChange;
import com.massivecraft.factions.event.EventFactionsPowerChange.PowerChangeReason;
import com.massivecraft.massivecore.Engine;
import com.massivecraft.massivecore.ps.PS;
import com.massivecraft.massivecore.util.MUtil;
import com.massivecraft.massivecore.util.PlayerUtil;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.entity.PlayerDeathEvent;

public class EnginePower extends Engine {
    // -------------------------------------------- //
    // INSTANCE & CONSTRUCT
    // -------------------------------------------- //

    private static EnginePower i = new EnginePower();

    public static EnginePower get() {
        return i;
    }

    // -------------------------------------------- //
    // POWER LOSS ON DEATH
    // -------------------------------------------- //

    @EventHandler(priority = EventPriority.NORMAL)
    public void powerLossOnDeath(PlayerDeathEvent event) {
        // If a player dies ...
        Player player = event.getEntity();
        if (MUtil.isntPlayer(player)) {
            return;
        }

        // ... and this is the first death event this tick ...
        // (yeah other plugins can case death event to fire twice the same tick)
        if (PlayerUtil.isDuplicateDeathEvent(event)) {
            return;
        }

        MPlayer mplayer = MPlayer.get(player);

        // ... and powerloss can happen here ...
        Faction faction = BoardColl.get().getFactionAt(PS.valueOf(player.getLocation()));

        if (!faction.getFlag(MFlag.getFlagPowerloss())) {
            mplayer.msg("<i>You didn't lose any power since the territory you died in works that way.");
            return;
        }

        if (!MConf.get().worldsPowerLossEnabled.contains(player.getWorld())) {
            mplayer.msg("<i>You didn't lose any power due to the world you died in.");
            return;
        }

        // ... alter the power ...
        double newPower = mplayer.getPower() + mplayer.getPowerPerDeath();

        EventFactionsPowerChange powerChangeEvent = new EventFactionsPowerChange(null, mplayer, PowerChangeReason.DEATH, newPower);
        powerChangeEvent.run();
        if (powerChangeEvent.isCancelled()) {
            return;
        }
        newPower = powerChangeEvent.getNewPower();

        mplayer.setPower(newPower);

        // ... and inform the player.
        // TODO: A progress bar here would be epic :)
        mplayer.msg("<i>Your power is now <h>%.2f / %.2f", newPower, mplayer.getPowerMax());
    }

}