/**
     * returns true if this entity is by a ladder, false otherwise
     */
    public boolean isOnLadder()
    {
        int i = MathHelper.floor_double(this.posX);
        int j = MathHelper.floor_double(this.boundingBox.minY);
        int k = MathHelper.floor_double(this.posZ);
        Block block = this.worldObj.getBlock(i, j, k);
        return ForgeHooks.isLivingOnLadder(block, worldObj, i, j, k, this);
    }