World and position empty in tile Entity

[Raycoms]

I have a special TileEntity but when I try to get the world and position object in it's constructor they both are empty.

Is it impossible to get the world and position in the constructor or is there some way?

 

 

 

/**
* The scarecrow tile entity to store extra data.
*/
public class ScarecrowTileEntity extends TileEntityChest
{
    /**
     * NBTTag to store the type.
     */
    private static final String TAG_TYPE = "type";
    /**
     * Random generator.
     */
    private final Random random = new Random();
    /**
     * The inventory connected with the scarecrow.
     */
    private InventoryField inventoryField;
    /**
     * The type of the scarecrow.
     */
    private ScareCrowType  type;

    /**
     * Creates an instance of the tileEntity.
     */
    public ScarecrowTileEntity()
    {
        super();
        World world = getWorld();
        this.inventoryField = new InventoryField(LanguageHandler.getString("com.minecolonies.gui.inventory.scarecrow"), true);

        if(world != null)
        {
            Colony colony = ColonyManager.getColony(world, pos);

            if (colony != null && colony.getField(pos) == null)
            {
                Entity entity = EntityUtils.getEntityFromUUID(world, colony.getPermissions().getOwner());

                if (entity instanceof EntityPlayer)
                {
                    colony.addNewField(inventoryField, ((EntityPlayer) entity).inventory, pos, world);
                }
            }
        }
    }

    @Override
    public void readFromNBT(NBTTagCompound compound)
    {
        super.readFromNBT(compound);

        type = ScareCrowType.values()[compound.getInteger(TAG_TYPE)];
        getInventoryField().readFromNBT(compound);
    }

    @Override
    public void writeToNBT(NBTTagCompound compound)
    {
        super.writeToNBT(compound);

        compound.setInteger(TAG_TYPE, this.getType().ordinal());
        getInventoryField().writeToNBT(compound);
    }

    /**
     * Returns the type of the scarecrow (Important for the rendering).
     *
     * @return the enum type.
     */
    public ScareCrowType getType()
    {
        if (this.type == null)
        {
            this.type = ScareCrowType.values()[this.random.nextInt(1)];
        }
        return this.type;
    }
    /**
     * Set the inventory connected with the scarecrow.
     *
     * @param inventoryField the field to set it to
     */
    public final void setInventoryField(final InventoryField inventoryField)
    {
        this.inventoryField = inventoryField;
    }

    /**
     * Get the inventory connected with the scarecrow.
     *
     * @return the inventory field of this scarecrow
     */
    public InventoryField getInventoryField()
    {
        return inventoryField;
    }

    /**
     * Enum describing the different textures the scarecrow has.
     */
    public enum ScareCrowType
    {
        PUMPKINHEAD,
        NORMAL
    }
}

 

Creation of tileEntity:

   @Override
    public TileEntity createNewTileEntity(World worldIn, int meta)
    {
        return new ScarecrowTileEntity();
    }

[Animefan8888]

TileEntities do not have a BlockPos when they are initialized. Only once they are read from NBT do they have one.

[TheMasterGabriel]

Is it impossible to get the world and position in the constructor or is there some way?

 

As Animefan stated, no you cannot use a TileEntity's worldObj or pos variables until they are set (which happens after the tile entity is constructed). However, Forge provides a handy function called onLoad that you can override in your tile entity where you can reference the its world and position.

[jeffryfisher]

I highly recommend that anyone using tile entities should, at least once in their lives, set a breakpoint in createNewTileEntity and then step into/through the whole process (including following the return to see what happens after that).

 

Trace the whole gory execution path to see what's called and/or set when. Only then can one begin to understand perverse phenomena such as why createNewTileEntity() can never do anything fancy, and the TE trash-on-update problem (and its converse gotcha, the TE that's never cleaned up). If you pay attention, you'll also see how an unsuspecting modder could accidentally create an endless loop.

 

Take notes so you can connect all the dots (like overriding the function that replaces the TE with every state change) and avoid all of the pitfalls (make sure your TE is marked dirty when it needs to be saved, and make sure it's deleted on time.)