public boolean updateHopper() { if (this.worldObj != null && !this.worldObj.isRemote) { if (!this.isCoolingDown() && BlockHopper.getIsBlockNotPoweredFromMetadata(this.getBlockMetadata())) { boolean flag = this.insertItemToInventory(); flag = suckItemsIntoHopper(this) || flag; if (flag) { this.setTransferCooldown(8); this.onInventoryChanged(); return true; } } return false; } else { return false; } }