/**
* Returns true if the furnace can smelt an item, i.e. has a source item, destination stack isn't
* full, etc.
*/
private boolean canSmelt() {
if (this.furnaceItemStacks[0] == null) {
return false;
} else {
ItemStack itemstack = RefineryRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[0]);
if (itemstack == null) return false;
if (this.furnaceItemStacks[2] == null) return true;
if (!this.furnaceItemStacks[2].isItemEqual(itemstack)) return false;
int result = furnaceItemStacks[2].stackSize + itemstack.stackSize;
return (result <= getInventoryStackLimit() && result <= itemstack.getMaxStackSize());
}
}
/**
* Turn one item from the furnace source stack into the appropriate smelted item in the furnace
* result stack
*/
public void smeltItem() {
if (this.canSmelt()) {
ItemStack itemstack = RefineryRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[0]);
if (this.furnaceItemStacks[2] == null) {
this.furnaceItemStacks[2] = itemstack.copy();
} else if (this.furnaceItemStacks[2].isItemEqual(itemstack)) {
furnaceItemStacks[2].stackSize += itemstack.stackSize;
}
--this.furnaceItemStacks[0].stackSize;
if (this.furnaceItemStacks[0].stackSize <= 0) {
this.furnaceItemStacks[0] = null;
}
}
}