@Override
public ItemStack transferStackInSlot(EntityPlayer player, int slotID) {
ItemStack stack = null;
Slot currentSlot = (Slot) inventorySlots.get(slotID);
if (currentSlot != null && currentSlot.getHasStack()) {
ItemStack slotStack = currentSlot.getStack();
stack = slotStack.copy();
if (slotID == 2 || slotID == 4) {
if (!mergeItemStack(slotStack, 5, inventorySlots.size(), true)) {
return null;
}
} else if (ChargeUtils.canBeDischarged(slotStack)) {
if (slotID != 1) {
if (!mergeItemStack(slotStack, 1, 2, false)) {
return null;
}
} else if (slotID == 1) {
if (!mergeItemStack(slotStack, 5, inventorySlots.size(), true)) {
return null;
}
}
} else if (RecipeHandler.getChanceOutput(slotStack, false, tileEntity.getRecipes()) != null) {
if (slotID != 0 && slotID != 1 && slotID != 2 && slotID != 3 && slotID != 4) {
if (!mergeItemStack(slotStack, 0, 1, false)) {
return null;
}
} else {
if (!mergeItemStack(slotStack, 5, inventorySlots.size(), true)) {
return null;
}
}
} else if (slotStack.getItem() instanceof ItemMachineUpgrade) {
if (slotID != 0 && slotID != 1 && slotID != 2 && slotID != 3) {
if (!mergeItemStack(slotStack, 3, 4, false)) {
return null;
}
} else {
if (!mergeItemStack(slotStack, 5, inventorySlots.size(), true)) {
return null;
}
}
} else {
if (slotID >= 5 && slotID <= 31) {
if (!mergeItemStack(slotStack, 32, inventorySlots.size(), false)) {
return null;
}
} else if (slotID > 31) {
if (!mergeItemStack(slotStack, 5, 31, false)) {
return null;
}
} else {
if (!mergeItemStack(slotStack, 5, inventorySlots.size(), true)) {
return null;
}
}
}
if (slotStack.stackSize == 0) {
currentSlot.putStack((ItemStack) null);
} else {
currentSlot.onSlotChanged();
}
if (slotStack.stackSize == stack.stackSize) {
return null;
}
currentSlot.onPickupFromSlot(player, slotStack);
}
return stack;
}
