Saber-Factions/src/com/massivecraft/factions/listeners/FactionsEntityListener.java

package com.massivecraft.factions.listeners;

import java.text.MessageFormat;

import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.entity.Creeper;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Fireball;
import org.bukkit.entity.Player;
import org.bukkit.entity.Projectile;
import org.bukkit.event.entity.CreatureSpawnEvent;
import org.bukkit.event.entity.EndermanPickupEvent;
import org.bukkit.event.entity.EndermanPlaceEvent;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.entity.EntityDeathEvent;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.entity.EntityListener;
import org.bukkit.event.entity.EntityTargetEvent;
import org.bukkit.event.painting.PaintingBreakByEntityEvent;
import org.bukkit.event.painting.PaintingBreakEvent;
import org.bukkit.event.painting.PaintingPlaceEvent;

import com.massivecraft.factions.Board;
import com.massivecraft.factions.Conf;
import com.massivecraft.factions.FLocation;
import com.massivecraft.factions.FPlayer;
import com.massivecraft.factions.FPlayers;
import com.massivecraft.factions.Faction;
import com.massivecraft.factions.P;
import com.massivecraft.factions.struct.Relation;
import com.massivecraft.factions.util.MiscUtil;


public class FactionsEntityListener extends EntityListener
{
	public P p;
	public FactionsEntityListener(P p)
	{
		this.p = p;
	}
	
	@Override
	public void onEntityDeath(EntityDeathEvent event)
	{
		Entity entity = event.getEntity();
		if ( ! (entity instanceof Player))
		{
			return;
		}
		
		Player player = (Player) entity;
		FPlayer fplayer = FPlayers.i.get(player);
		Faction faction = Board.getFactionAt(new FLocation(player.getLocation()));
		if (faction.isWarZone())
		{
			// war zones always override worldsNoPowerLoss either way, thus this layout
			if (! Conf.warZonePowerLoss)
			{
				fplayer.sendMessage("You didn't lose any power since you were in a war zone.");
				return;
			}
			if (Conf.worldsNoPowerLoss.contains(player.getWorld().getName()))
			{
				fplayer.sendMessage("The world you are in has power loss normally disabled, but you still lost power since you were in a war zone.");
			}
		}
		else if (faction.isNone() && !Conf.wildernessPowerLoss && !Conf.worldsNoWildernessProtection.contains(player.getWorld().getName()))
		{
			fplayer.sendMessage("You didn't lose any power since you were in the wilderness.");
			return;
		}
		else if (Conf.worldsNoPowerLoss.contains(player.getWorld().getName()))
		{
			fplayer.sendMessage("You didn't lose any power due to the world you died in.");
			return;
		}
		else if (Conf.peacefulMembersDisablePowerLoss && fplayer.hasFaction() && fplayer.getFaction().isPeaceful())
		{
			fplayer.sendMessage("You didn't lose any power since you are in a peaceful faction.");
			return;
		}
		fplayer.onDeath();
		fplayer.sendMessage("Your power is now "+fplayer.getPowerRounded()+" / "+fplayer.getPowerMaxRounded());
	}
	
	/**
	 * Who can I hurt?
	 * I can never hurt members or allies.
	 * I can always hurt enemies.
	 * I can hurt neutrals as long as they are outside their own territory.
	 */
	@Override
	public void onEntityDamage(EntityDamageEvent event) {
		if ( event.isCancelled()) {
			return;
		}
		
		if (event instanceof EntityDamageByEntityEvent) {
			EntityDamageByEntityEvent sub = (EntityDamageByEntityEvent)event;
			if ( ! this.canDamagerHurtDamagee(sub)) {
    			event.setCancelled(true);
    		}
		} else if (Conf.safeZonePreventAllDamageToPlayers && isPlayerInSafeZone(event.getEntity())) {
			// Players can not take any damage in a Safe Zone
			event.setCancelled(true);
		}
	}
	
	@Override
	public void onEntityExplode(EntityExplodeEvent event)
	{
		if ( event.isCancelled()) return;
		
		Location loc = event.getLocation();
		
		Faction faction = Board.getFactionAt(new FLocation(loc));
		boolean online = faction.hasPlayersOnline();
		
		if (faction.noExplosionsInTerritory())
		{
			// faction is peaceful and has explosions set to disabled
			event.setCancelled(true);
		}
		else if
		(
			event.getEntity() instanceof Creeper
			&&
			(
				(faction.isNone() && Conf.wildernessBlockCreepers && !Conf.worldsNoWildernessProtection.contains(loc.getWorld().getName()))
				||
				(faction.isNormal() && (online ? Conf.territoryBlockCreepers : Conf.territoryBlockCreepersWhenOffline))
				||
				(faction.isWarZone() && Conf.warZoneBlockCreepers)
				||
				faction.isSafeZone()
			)
		)
		{
			// creeper which needs prevention
			event.setCancelled(true);
		}
		else if
		(
			event.getEntity() instanceof Fireball
			&&
			(
				(faction.isNone() && Conf.wildernessBlockFireballs && !Conf.worldsNoWildernessProtection.contains(loc.getWorld().getName()))
				||
				(faction.isNormal() && (online ? Conf.territoryBlockFireballs : Conf.territoryBlockFireballsWhenOffline))
				||
				(faction.isWarZone() && Conf.warZoneBlockFireballs)
				||
				faction.isSafeZone()
			)
		)
		{
			// ghast fireball which needs prevention
			event.setCancelled(true);
		}
		else if
		(
			(
				faction.isNone()
				&&
				Conf.wildernessBlockTNT
				&&
				! Conf.worldsNoWildernessProtection.contains(loc.getWorld().getName())
			)
			||
			(
				faction.isNormal()
				&&
				(
					online ? Conf.territoryBlockTNT : Conf.territoryBlockTNTWhenOffline
				)
			)
			||
			(
				faction.isWarZone()
				&&
				Conf.warZoneBlockTNT
			)
			||
			(
				faction.isSafeZone()
				&&
				Conf.safeZoneBlockTNT
			)
		)
		{
			// we'll assume it's TNT, which needs prevention
			event.setCancelled(true);
		}
	}

	public boolean isPlayerInSafeZone(Entity damagee)
	{
		if ( ! (damagee instanceof Player))
		{
			return false;
		}
		if (Board.getFactionAt(new FLocation(damagee.getLocation())).isSafeZone())
		{
			return true;
		}
		return false;
	}

	public boolean canDamagerHurtDamagee(EntityDamageByEntityEvent sub)
	{
		Entity damager = sub.getDamager();
		Entity damagee = sub.getEntity();
		int damage = sub.getDamage();
		
		if ( ! (damagee instanceof Player))
		{
			return true;
		}
		
		FPlayer defender = FPlayers.i.get((Player)damagee);
		
		if (defender == null || defender.getPlayer() == null)
		{
			return true;
		}
		
		Location defenderLoc = defender.getPlayer().getLocation();
		
		if (Conf.worldsIgnorePvP.contains(defenderLoc.getWorld().getName()))
		{
			return true;
		}
		
		Faction defLocFaction = Board.getFactionAt(new FLocation(defenderLoc));

		// for damage caused by projectiles, getDamager() returns the projectile... what we need to know is the source
		if (damager instanceof Projectile)
		{
			damager = ((Projectile)damager).getShooter();
		}

		// Players can not take attack damage in a SafeZone, or possibly peaceful territory
		if (defLocFaction.noPvPInTerritory()) {
			if (damager instanceof Player)
			{
				FPlayer attacker = FPlayers.i.get((Player)damager);
				attacker.sendMessage("You can't hurt other players in "+(defLocFaction.isSafeZone() ? "a SafeZone." : "peaceful territory."));
				return false;
			}
			return !defLocFaction.noMonstersInTerritory();
		}
		
		if ( ! (damager instanceof Player))
		{
			return true;
		}
		
		FPlayer attacker = FPlayers.i.get((Player)damager);
		
		if (attacker == null || attacker.getPlayer() == null)
		{
			return true;
		}
		
		if (attacker.hasLoginPvpDisabled())
		{
			attacker.sendMessage("You can't hurt other players for " + Conf.noPVPDamageToOthersForXSecondsAfterLogin + " seconds after logging in.");
			return false;
		}
		
		Faction locFaction = Board.getFactionAt(new FLocation(attacker));
		
		// so we know from above that the defender isn't in a safezone... what about the attacker, sneaky dog that he might be?
		if (locFaction.noPvPInTerritory())
		{
			attacker.sendMessage("You can't hurt other players while you are in "+(locFaction.isSafeZone() ? "a SafeZone." : "peaceful territory."));
			return false;
		}
		else if (locFaction.isWarZone() && Conf.warZoneFriendlyFire)
		{
			return true;
		}
		
		Faction defendFaction = defender.getFaction();
		Faction attackFaction = attacker.getFaction();
		
		if (attackFaction.isNone() && Conf.disablePVPForFactionlessPlayers)
		{
			attacker.sendMessage("You can't hurt other players until you join a faction.");
			return false;
		}
		else if (defendFaction.isNone())
		{
			if (defLocFaction == attackFaction && Conf.enablePVPAgainstFactionlessInAttackersLand)
			{
				// Allow PVP vs. Factionless in attacker's faction territory
				return true;
			}
			else if (Conf.disablePVPForFactionlessPlayers)
			{
				attacker.sendMessage("You can't hurt players who are not currently in a faction.");
				return false;
			}
		}
		
		if (defendFaction.isPeaceful())
		{
			attacker.sendMessage("You can't hurt players who are in a peaceful faction.");
			return false;
		}
		else if (attackFaction.isPeaceful())
		{
			attacker.sendMessage("You can't hurt players while you are in a peaceful faction.");
			return false;
		}
		
		Relation relation = defendFaction.getRelation(attackFaction);
		
		// You can not hurt neutral factions
		if (Conf.disablePVPBetweenNeutralFactions && relation.isNeutral())
		{
			attacker.sendMessage("You can't hurt neutral factions");
			return false;
		}
		
		// Players without faction may be hurt anywhere
		if (!defender.hasFaction())
		{
			return true;
		}
		
		// You can never hurt faction members or allies
		if (relation.isMember() || relation.isAlly())
		{
			attacker.sendMessage(p.txt.parse("<i>You can't hurt "+defender.getNameAndRelevant(attacker)));
			return false;
		}
		
		boolean ownTerritory = defender.isInOwnTerritory();
		
		// You can not hurt neutrals in their own territory.
		if (ownTerritory && relation.isNeutral())
		{
			attacker.sendMessage(p.txt.parse("<i>You can't hurt "+relation.getColor()+defender.getNameAndRelevant(attacker)+"<i> in their own territory."));
			defender.sendMessage(p.txt.parse(attacker.getNameAndRelevant(defender)+"<i> tried to hurt you."));
			return false;
		}
		
		// Damage will be dealt. However check if the damage should be reduced.
		if (ownTerritory && Conf.territoryShieldFactor > 0)
		{
			int newDamage = (int)Math.ceil(damage * (1D - Conf.territoryShieldFactor));
			sub.setDamage(newDamage);
			
			// Send message
		    String perc = MessageFormat.format("{0,number,#%}", (Conf.territoryShieldFactor)); // TODO does this display correctly??
		    defender.sendMessage(p.txt.parse("<i>Enemy damage reduced by "+ChatColor.RED+perc+"<i>."));
		}
		
		return true;
	}
	
	@Override
	public void onCreatureSpawn(CreatureSpawnEvent event)
	{
		if (event.isCancelled() || event.getLocation() == null)
		{
			return;
		}
		
		if (Conf.safeZoneNerfedCreatureTypes.contains(event.getCreatureType()) && Board.getFactionAt(new FLocation(event.getLocation())).noMonstersInTerritory())
		{
			event.setCancelled(true);
		}
	}
	
	@Override
	public void onEntityTarget(EntityTargetEvent event)
	{
		if (event.isCancelled()) return;
		
		// if there is a target
		Entity target = event.getTarget();
		if (target == null)
		{
			return;
		}
		
		// We are interested in blocking targeting for certain mobs:
		if ( ! Conf.safeZoneNerfedCreatureTypes.contains(MiscUtil.creatureTypeFromEntity(event.getEntity())))
		{
			return;
		}
		
		// in case the target is in a safe zone.
		if (Board.getFactionAt(new FLocation(target.getLocation())).noMonstersInTerritory())
		{
			event.setCancelled(true);
		}
	}

	@Override
	public void onPaintingBreak(PaintingBreakEvent event)
	{
		if (event.isCancelled()) return;
		
		if (! (event instanceof PaintingBreakByEntityEvent))
		{
			return;
		}

		Entity breaker = ((PaintingBreakByEntityEvent)event).getRemover();
		if (! (breaker instanceof Player))
		{
			return;
		}

		FLocation loc = new FLocation(event.getPainting().getLocation());

		if ( ! this.playerCanDoPaintings((Player)breaker, loc, "remove"))
		{
			event.setCancelled(true);
		}
	}

	@Override
	public void onPaintingPlace(PaintingPlaceEvent event)
	{
		if (event.isCancelled()) return;

		if ( ! this.playerCanDoPaintings(event.getPlayer(), new FLocation(event.getBlock()), "place"))
		{
			event.setCancelled(true);
		}
	}

	public boolean playerCanDoPaintings(Player player, FLocation loc, String action)
	{

		if (Conf.adminBypassPlayers.contains(player.getName()))
		{
			return true;
		}

		Faction otherFaction = Board.getFactionAt(loc);
		FPlayer me = FPlayers.i.get(player);

		if (otherFaction.isNone())
		{
			if (!Conf.wildernessDenyBuild || P.hasPermAdminBypass(player) || Conf.worldsNoWildernessProtection.contains(player.getWorld().getName()))
			{
				return true; // This is not faction territory. Use whatever you like here.
			}
			me.sendMessage("You can't "+action+" paintings in the wilderness.");
			return false;
		}

		if (otherFaction.isSafeZone())
		{
			if (P.hasPermManageSafeZone(player) || !Conf.safeZoneDenyBuild)
			{
				return true;
			}
			me.sendMessage("You can't "+action+" paintings in a safe zone.");
			return false;
		}
		else if (otherFaction.isWarZone())
		{
			if (P.hasPermManageWarZone(player) || !Conf.warZoneDenyBuild)
			{
				return true;
			}
			me.sendMessage("You can't "+action+" paintings in a war zone.");
			return false;
		}

		Faction myFaction = me.getFaction();
		Relation rel = myFaction.getRelation(otherFaction);
		boolean ownershipFail = Conf.ownedAreasEnabled && Conf.ownedAreaDenyBuild && !otherFaction.playerHasOwnershipRights(me, loc);

		// Cancel if we are not in our own territory and building should be denied
		if (!rel.isMember() && rel.confDenyBuild(otherFaction.hasPlayersOnline()))
		{
			me.sendMessage("You can't "+action+" paintings in the territory of "+otherFaction.getTag(myFaction));
			return false;
		}
		// Also cancel if player doesn't have ownership rights for this claim
		else if (rel.isMember() && ownershipFail && !P.hasPermOwnershipBypass(player))
		{
			me.sendMessage("You can't "+action+" paintings in this territory, it is owned by: "+otherFaction.getOwnerListString(loc));
			return false;
		}

		return true;
	}

	@Override
	public void onEndermanPickup(EndermanPickupEvent event)
	{
		if (event.isCancelled()) return;

		if (stopEndermanBlockManipulation(event.getBlock().getLocation()))
		{
			event.setCancelled(true);
		}
	}

	@Override
	public void onEndermanPlace(EndermanPlaceEvent event)
	{
		if (event.isCancelled()) return;

		if (stopEndermanBlockManipulation(event.getLocation()))
		{
			event.setCancelled(true);
		}
	}

	private boolean stopEndermanBlockManipulation(Location loc)
	{
		if (loc == null)
		{
			return false;
		}
		// quick check to see if all Enderman deny options are enabled; if so, no need to check location
		if
		(
			Conf.wildernessDenyEndermanBlocks
			&&
			Conf.territoryDenyEndermanBlocks
			&&
			Conf.territoryDenyEndermanBlocksWhenOffline
			&&
			Conf.safeZoneDenyEndermanBlocks
			&&
			Conf.warZoneDenyEndermanBlocks
		)
		{
			return true;
		}

		FLocation fLoc = new FLocation(loc);
		Faction claimFaction = Board.getFactionAt(fLoc);

		if (claimFaction.isNone())
		{
			return Conf.wildernessDenyEndermanBlocks;
		}
		else if (claimFaction.isNormal())
		{
			return claimFaction.hasPlayersOnline() ? Conf.territoryDenyEndermanBlocks : Conf.territoryDenyEndermanBlocksWhenOffline;
		}
		else if (claimFaction.isSafeZone())
		{
			return Conf.safeZoneDenyEndermanBlocks;
		}
		else if (claimFaction.isWarZone())
		{
			return Conf.warZoneDenyEndermanBlocks;
		}

		return false;
	}
}