package net.minecraft.entity.item;

import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.stats.AchievementList;
import net.minecraft.util.BlockPos;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.StatCollector;
import net.minecraft.world.World;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class EntityItem extends Entity
{
    private static final Logger logger = LogManager.getLogger();

    /**
     * The age of this EntityItem (used to animate it up and down as well as expire it)
     */
    private int age;
    private int delayBeforeCanPickup;

    /** The health of this EntityItem. (For example, damage for tools) */
    private int health;
    private String thrower;
    private String owner;

    /** The EntityItem's random initial float height. */
    public float hoverStart;

    public EntityItem(World worldIn, double x, double y, double z)
    {
        super(worldIn);
        this.health = 5;
        this.hoverStart = (float)(Math.random() * Math.PI * 2.0D);
        this.setSize(0.25F, 0.25F);
        this.setPosition(x, y, z);
        this.rotationYaw = (float)(Math.random() * 360.0D);
        this.motionX = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D));
        this.motionY = 0.20000000298023224D;
        this.motionZ = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D));
    }

    public EntityItem(World worldIn, double x, double y, double z, ItemStack stack)
    {
        this(worldIn, x, y, z);
        this.setEntityItemStack(stack);
    }

    /**
     * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
     * prevent them from trampling crops
     */
    protected boolean canTriggerWalking()
    {
        return false;
    }

    public EntityItem(World worldIn)
    {
        super(worldIn);
        this.health = 5;
        this.hoverStart = (float)(Math.random() * Math.PI * 2.0D);
        this.setSize(0.25F, 0.25F);
        this.setEntityItemStack(new ItemStack(Blocks.air, 0));
    }

    protected void entityInit()
    {
        this.getDataWatcher().addObjectByDataType(10, 5);
    }

    /**
     * Called to update the entity's position/logic.
     */
    public void onUpdate()
    {
        if (this.getEntityItem() == null)
        {
            this.setDead();
        }
        else
        {
            super.onUpdate();

            if (this.delayBeforeCanPickup > 0 && this.delayBeforeCanPickup != 32767)
            {
                --this.delayBeforeCanPickup;
            }

            this.prevPosX = this.posX;
            this.prevPosY = this.posY;
            this.prevPosZ = this.posZ;
            this.motionY -= 0.03999999910593033D;
            this.noClip = this.pushOutOfBlocks(this.posX, (this.getEntityBoundingBox().minY + this.getEntityBoundingBox().maxY) / 2.0D, this.posZ);
            this.moveEntity(this.motionX, this.motionY, this.motionZ);
            boolean flag = (int)this.prevPosX != (int)this.posX || (int)this.prevPosY != (int)this.posY || (int)this.prevPosZ != (int)this.posZ;

            if (flag || this.ticksExisted % 25 == 0)
            {
                if (this.worldObj.getBlockState(new BlockPos(this)).getBlock().getMaterial() == Material.lava)
                {
                    this.motionY = 0.20000000298023224D;
                    this.motionX = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
                    this.motionZ = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
                    this.playSound("random.fizz", 0.4F, 2.0F + this.rand.nextFloat() * 0.4F);
                }

                if (!this.worldObj.isRemote)
                {
                    this.searchForOtherItemsNearby();
                }
            }

            float f = 0.98F;

            if (this.onGround)
            {
                f = this.worldObj.getBlockState(new BlockPos(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.getEntityBoundingBox().minY) - 1, MathHelper.floor_double(this.posZ))).getBlock().slipperiness * 0.98F;
            }

            this.motionX *= (double)f;
            this.motionY *= 0.9800000190734863D;
            this.motionZ *= (double)f;

            if (this.onGround)
            {
                this.motionY *= -0.5D;
            }

            if (this.age != -32768)
            {
                ++this.age;
            }

            this.handleWaterMovement();

            if (!this.worldObj.isRemote && this.age >= 6000)
            {
                this.setDead();
            }
        }
    }

    /**
     * Looks for other itemstacks nearby and tries to stack them together
     */
    private void searchForOtherItemsNearby()
    {
        for (EntityItem entityitem : this.worldObj.getEntitiesWithinAABB(EntityItem.class, this.getEntityBoundingBox().expand(0.5D, 0.0D, 0.5D)))
        {
            this.combineItems(entityitem);
        }
    }

    /**
     * Tries to merge this item with the item passed as the parameter. Returns true if successful. Either this item or
     * the other item will  be removed from the world.
     */
    private boolean combineItems(EntityItem other)
    {
        if (other == this)
        {
            return false;
        }
        else if (other.isEntityAlive() && this.isEntityAlive())
        {
            ItemStack itemstack = this.getEntityItem();
            ItemStack itemstack1 = other.getEntityItem();

            if (this.delayBeforeCanPickup != 32767 && other.delayBeforeCanPickup != 32767)
            {
                if (this.age != -32768 && other.age != -32768)
                {
                    if (itemstack1.getItem() != itemstack.getItem())
                    {
                        return false;
                    }
                    else if (itemstack1.hasTagCompound() ^ itemstack.hasTagCompound())
                    {
                        return false;
                    }
                    else if (itemstack1.hasTagCompound() && !itemstack1.getTagCompound().equals(itemstack.getTagCompound()))
                    {