ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemEngineerGoggles.java

/*
 * This file ("ItemInfraredGoggles.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2017 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.items;

import java.util.List;
import java.util.Set;

import de.ellpeck.actuallyadditions.api.misc.IGoggles;
import de.ellpeck.actuallyadditions.mod.ActuallyAdditions;
import de.ellpeck.actuallyadditions.mod.items.base.ItemArmorAA;
import de.ellpeck.actuallyadditions.mod.material.InitArmorMaterials;
import de.ellpeck.actuallyadditions.mod.util.StackUtil;
import io.netty.util.internal.ConcurrentSet;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.ItemStack;
import net.minecraft.util.math.AxisAlignedBB;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.TickEvent.ClientTickEvent;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class ItemEngineerGoggles extends ItemArmorAA implements IGoggles{

    private final Set<Entity> cachedGlowingEntities = new ConcurrentSet<Entity>();

    private final boolean displayMobs;

    public ItemEngineerGoggles(String name, boolean displayMobs){
        super(name, InitArmorMaterials.armorMaterialGoggles, 0, StackUtil.getNull());
        this.displayMobs = displayMobs;
        this.setMaxDamage(0);

        MinecraftForge.EVENT_BUS.register(this);
    }

    public static boolean isWearing(EntityPlayer player){
        ItemStack face = player.inventory.armorInventory.get(3);
        return StackUtil.isValid(face) && face.getItem() instanceof IGoggles;
    }

    @SideOnly(Side.CLIENT)
    @SubscribeEvent
    public void onClientTick(ClientTickEvent event){
        EntityPlayer player = ActuallyAdditions.proxy.getCurrentPlayer();
        if(player != null && isWearing(player)){
            ItemStack face = player.inventory.armorInventory.get(3);
            if(((IGoggles)face.getItem()).displaySpectralMobs()){
                double range = 8;
                AxisAlignedBB aabb = new AxisAlignedBB(player.posX-range, player.posY-range, player.posZ-range, player.posX+range, player.posY+range, player.posZ+range);
                List<Entity> entities = player.world.getEntitiesWithinAABB(Entity.class, aabb);
                if(entities != null && !entities.isEmpty()){
                    this.cachedGlowingEntities.addAll(entities);
                }

                if(!this.cachedGlowingEntities.isEmpty()){
                    for(Entity entity : this.cachedGlowingEntities){
                        if(entity.isDead || entity.getDistanceSq(player.posX, player.posY, player.posZ) > range*range){
                            entity.setGlowing(false);

                            this.cachedGlowingEntities.remove(entity);
                        }
                        else{
                            entity.setGlowing(true);
                        }
                    }
                }

                return;
            }
        }

        if(!this.cachedGlowingEntities.isEmpty()){
            for(Entity entity : this.cachedGlowingEntities){
                if(!entity.isDead){
                    entity.setGlowing(false);
                }
            }
            this.cachedGlowingEntities.clear();
        }
    }

    @Override
    public EnumRarity getRarity(ItemStack stack){
        return EnumRarity.RARE;
    }

    @Override
    public boolean displaySpectralMobs(){
        return this.displayMobs;
    }
}