@Override
public void setInventorySlotContents(int slot, ItemStack itemstack) {
// reset heat if set to null or a different item
if (itemstack == null
|| (getStackInSlot(slot) != null
&& !ItemStack.areItemStacksEqual(itemstack, getStackInSlot(slot)))) {
itemTemperatures[slot] = 0;
}
super.setInventorySlotContents(slot, itemstack);
// when an item gets added, check for its heat required
updateHeatRequired(slot);
}
