tile entity chest

package com.ButterAleks.RandomIdeas.blocks.tileentity;

import com.ButterAleks.RandomIdeas.blocks.container.ContainerRainbowChestBlock;
import com.ButterAleks.RandomIdeas.util.Reference;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.init.SoundEvents;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.ItemStackHelper;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntityLockableLoot;
import net.minecraft.util.ITickable;
import net.minecraft.util.NonNullList;
import net.minecraft.util.SoundCategory;
import net.minecraft.util.math.AxisAlignedBB;

public class TileEntityRainbowChestBlock extends TileEntityLockableLoot implements ITickable
{
private NonNullList<ItemStack> chestContants = NonNullList.<ItemStack>withSize(72, ItemStack.EMPTY);
public int numPlayerUsing, ticksSinceSync;
public float lidAngle, prevLidAngle;
@Override
public int getSizeInventory()
{
	return 72;
}
@Override
public int getInventoryStackLimit()
{
	return 64;
}
@Override
public boolean isEmpty()
{
	for(ItemStack stack : this.chestContants)
	{
		if(!stack.isEmpty()) return false;
	}
	return true;
}

@Override
public String getName()
{
	return this.hasCustomName() ? this.customName : "container.rainbow_chest_block";
}

@Override
public void readFromNBT(NBTTagCompound compound)
{
	super.readFromNBT(compound);
	this.chestContants = NonNullList.<ItemStack>withSize(this.getSizeInventory(), ItemStack.EMPTY);
if(this.checkLootAndRead(compound)) ItemStackHelper.loadAllItems(compound, chestContants);
if(compound.hasKey("CustomName", 8)) this.customName = compound.getString("CustomeName");
}
@Override
public NBTTagCompound writeToNBT(NBTTagCompound compound)
{
	super.writeToNBT(compound);
	if(this.checkLootAndWrite(compound)) ItemStackHelper.saveAllItems(compound, chestContants);
	if(compound.hasKey("CustomName", 8)) compound.setString("CustomName", this.customName);
	return compound;

}
@Override
public Container createContainer(InventoryPlayer playerInventory, EntityPlayer playerIn)
{
	return new ContainerRainbowChestBlock(playerInventory, this, playerIn);
}
@Override
public String getGuiID()
{
	return Reference.MOD_ID + ":rainbow_chest_block";
}
@Override
protected NonNullList<ItemStack> getItems()
{
	return this.chestContants;
}
@Override
public void update()
{
    if (!this.world.isRemote && this.numPlayerUsing != 0 && (this.ticksSinceSync + pos.getX() + pos.getY() + pos.getZ()) % 200 == 0)
    {
        this.numPlayerUsing = 0;
        float f = 5.0F;

        for (EntityPlayer entityplayer : this.world.getEntitiesWithinAABB(EntityPlayer.class, new AxisAlignedBB((double)((float)pos.getX() - 5.0F), (double)((float)pos.getY() - 5.0F), (double)((float)pos.getZ() - 5.0F), (double)((float)(pos.getX() + 1) + 5.0F), (double)((float)(pos.getY() + 1) + 5.0F), (double)((float)(pos.getZ() + 1) + 5.0F))))
        {
            if (entityplayer.openContainer instanceof ContainerRainbowChestBlock)
            {
                if (((ContainerRainbowChestBlock)entityplayer.openContainer).getChestInventory() == this)
                {
                    ++this.numPlayerUsing;
                }
            }
        }
    }

    this.prevLidAngle = this.lidAngle;
    float f1 = 0.1F;

    if (this.numPlayerUsing > 0 && this.lidAngle == 0.0F)
    {
        double d1 = (double)pos.getX() + 0.5D;
        double d2 = (double)pos.getZ() + 0.5D;
        this.world.playSound((EntityPlayer)null, d1, (double)pos.getY() + 0.5D, d2, SoundEvents.BLOCK_IRON_TRAPDOOR_OPEN, SoundCategory.BLOCKS, 0.5F, this.world.rand.nextFloat() * 0.1F + 0.9F);
    }

    if (this.numPlayerUsing == 0 && this.lidAngle > 0.0F || this.numPlayerUsing > 0 && this.lidAngle < 1.0F)
    {
        float f2 = this.lidAngle;

        if (this.numPlayerUsing > 0)
        {
            this.lidAngle += 0.1F;
        }
        else
        {
            this.lidAngle -= 0.1F;
        }

        if (this.lidAngle > 1.0F)
        {
            this.lidAngle = 1.0F;
        }

        float f3 = 0.5F;

        if (this.lidAngle < 0.5F && f2 >= 0.5F)
        {
            double d3 = (double)pos.getX() + 0.5D;
            double d0 = (double)pos.getZ() + 0.5D;
            this.world.playSound((EntityPlayer)null, d3, (double)pos.getY() + 0.5D, d0, SoundEvents.BLOCK_IRON_TRAPDOOR_CLOSE, SoundCategory.BLOCKS, 0.5F, this.world.rand.nextFloat() * 0.1F + 0.9F);
        }

        if (this.lidAngle < 0.0F)
        {
            this.lidAngle = 0.0F;
        }
    }
}
@Override
public void openInventory(EntityPlayer player)
{
	++this.numPlayerUsing;
	this.world.addBlockEvent(pos, this.getBlockType(), 1, this.numPlayerUsing);
	this.world.notifyNeighborsOfStateChange(pos, this.getBlockType(), false);
}
@Override
public void closeInventory(EntityPlayer player)
{
	--this.numPlayerUsing;
	this.world.addBlockEvent(pos, this.getBlockType(), 1, this.numPlayerUsing);
	this.world.notifyNeighborsOfStateChange(pos, this.getBlockType(), false);
}
}