TileEntityEnderChest.java

package net.minecraft.tileentity;

import net.minecraft.block.Block;
import net.minecraft.entity.player.EntityPlayer;

public class TileEntityEnderChest extends TileEntity
{
    /** The current angle of the chest lid (between 0 and 1) */
    public float lidAngle;

    /** The angle of the chest lid last tick */
    public float prevLidAngle;

    /** The number of players currently using this ender chest. */
    public int numUsingPlayers;

    /** Server sync counter (once per 20 ticks) */
    private int ticksSinceSync;

    /**
     * Allows the entity to update its state. Overridden in most subclasses, e.g. the mob spawner uses this to count
     * ticks and creates a new spawn inside its implementation.
     */
    public void updateEntity()
    {
        super.updateEntity();

        if (++this.ticksSinceSync % 20 * 4 == 0)
        {
            this.worldObj.addBlockEvent(this.xCoord, this.yCoord, this.zCoord, Block.enderChest.blockID, 1, this.numUsingPlayers);
        }

        this.prevLidAngle = this.lidAngle;
        float f = 0.1F;
        double d0;

        if (this.numUsingPlayers > 0 && this.lidAngle == 0.0F)
        {
            double d1 = (double)this.xCoord + 0.5D;
            d0 = (double)this.zCoord + 0.5D;
            this.worldObj.playSoundEffect(d1, (double)this.yCoord + 0.5D, d0, "random.chestopen", 0.5F, this.worldObj.rand.nextFloat() * 0.1F + 0.9F);
        }

        if (this.numUsingPlayers == 0 && this.lidAngle > 0.0F || this.numUsingPlayers > 0 && this.lidAngle < 1.0F)
        {
            float f1 = this.lidAngle;

            if (this.numUsingPlayers > 0)
            {
                this.lidAngle += f;
            }
            else
            {
                this.lidAngle -= f;
            }

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

            float f2 = 0.5F;

            if (this.lidAngle < f2 && f1 >= f2)
            {
                d0 = (double)this.xCoord + 0.5D;
                double d2 = (double)this.zCoord + 0.5D;
                this.worldObj.playSoundEffect(d0, (double)this.yCoord + 0.5D, d2, "random.chestclosed", 0.5F, this.worldObj.rand.nextFloat() * 0.1F + 0.9F);
            }

            if (this.lidAngle < 0.0F)
            {
                this.lidAngle = 0.0F;
            }
        }
    }

    /**
     * Called when a client event is received with the event number and argument, see World.sendClientEvent
     */
    public boolean receiveClientEvent(int par1, int par2)
    {
        if (par1 == 1)
        {
            this.numUsingPlayers = par2;
            return true;
        }
        else
        {
            return super.receiveClientEvent(par1, par2);
        }
    }

    /**
     * invalidates a tile entity
     */
    public void invalidate()
    {
        this.updateContainingBlockInfo();
        super.invalidate();
    }

    public void openChest()
    {
        ++this.numUsingPlayers;
        this.worldObj.addBlockEvent(this.xCoord, this.yCoord, this.zCoord, Block.enderChest.blockID, 1, this.numUsingPlayers);
    }

    public void closeChest()
    {
        --this.numUsingPlayers;
        this.worldObj.addBlockEvent(this.xCoord, this.yCoord, this.zCoord, Block.enderChest.blockID, 1, this.numUsingPlayers);
    }

    public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer)
    {
        return this.worldObj.getBlockTileEntity(this.xCoord, this.yCoord, this.zCoord) != this ? false : par1EntityPlayer.getDistanceSq((double)this.xCoord + 0.5D, (double)this.yCoord + 0.5D, (double)this.zCoord + 0.5D) <= 64.0D;
    }
}