public int capShoppingAmount(
int offerId, int wantedAmount, IInventory inv, IFluidHandler fluidHandler) {
AmadronOffer offer = offers.get(offerId);
if (offer.getInput() instanceof ItemStack) {
if (inv != null) {
ItemStack searchingItem = (ItemStack) offer.getInput();
int count = 0;
for (int i = 0; i < inv.getSizeInventory(); i++) {
if (inv.getStackInSlot(i) != null
&& inv.getStackInSlot(i).isItemEqual(searchingItem)
&& ItemStack.areItemStackTagsEqual(inv.getStackInSlot(i), searchingItem)) {
count += inv.getStackInSlot(i).stackSize;
}
}
int maxAmount = count / ((ItemStack) offer.getInput()).stackSize;
if (wantedAmount > maxAmount) {
problemState = EnumProblemState.NOT_ENOUGH_ITEMS;
wantedAmount = maxAmount;
}
} else {
wantedAmount = 0;
problemState = EnumProblemState.NO_ITEM_PROVIDER;
}
} else {
if (fluidHandler != null) {
FluidStack searchingFluid = ((FluidStack) offer.getInput()).copy();
searchingFluid.amount = Integer.MAX_VALUE;
FluidStack extracted = fluidHandler.drain(ForgeDirection.UP, searchingFluid, false);
int maxAmount = 0;
if (extracted != null)
maxAmount = extracted.amount / ((FluidStack) offer.getInput()).amount;
if (wantedAmount > maxAmount) {
problemState = EnumProblemState.NOT_ENOUGH_FLUID;
wantedAmount = maxAmount;
}
} else {
wantedAmount = 0;
problemState = EnumProblemState.NO_FLUID_PROVIDER;
}
}
if (offer.getOutput() instanceof ItemStack) {
if (inv != null) {
ItemStack providingItem = ((ItemStack) offer.getOutput()).copy();
providingItem.stackSize *= wantedAmount;
ItemStack remainder = IOHelper.insert(inv, providingItem.copy(), 0, true);
if (remainder != null) {
int maxAmount =
(providingItem.stackSize - remainder.stackSize)
/ ((ItemStack) offer.getOutput()).stackSize;
if (wantedAmount > maxAmount) {
wantedAmount = maxAmount;
problemState = EnumProblemState.NOT_ENOUGH_ITEM_SPACE;
}
}
} else {
wantedAmount = 0;
problemState = EnumProblemState.NO_ITEM_PROVIDER;
}
} else {
if (fluidHandler != null) {
FluidStack providingFluid = ((FluidStack) offer.getOutput()).copy();
providingFluid.amount *= wantedAmount;
int amountFilled = fluidHandler.fill(ForgeDirection.UP, providingFluid, false);
int maxAmount = amountFilled / ((FluidStack) offer.getOutput()).amount;
if (wantedAmount > maxAmount) {
wantedAmount = maxAmount;
problemState = EnumProblemState.NOT_ENOUGH_FLUID_SPACE;
}
} else {
wantedAmount = 0;
problemState = EnumProblemState.NO_FLUID_PROVIDER;
}
}
return wantedAmount;
}
@Override
public void handleGUIButtonPress(int guiID, EntityPlayer player) {
super.handleGUIButtonPress(guiID, player);
if (guiID == 1) {
for (int i = 0; i < shoppingItems.length; i++) {
if (shoppingItems[i] >= 0) {
AmadronOffer offer = offers.get(shoppingItems[i]);
if (offer.getInput() instanceof ItemStack) {
ItemStack queryingItems = (ItemStack) offer.getInput();
int amount = queryingItems.stackSize * shoppingAmounts[i];
List<ItemStack> stacks = new ArrayList<ItemStack>();
while (amount > 0) {
ItemStack stack = queryingItems.copy();
stack.stackSize = Math.min(amount, stack.getMaxStackSize());
stacks.add(stack);
amount -= stack.stackSize;
}
ChunkPosition pos =
ItemAmadronTablet.getItemProvidingLocation(player.getCurrentEquippedItem());
World world = null;
if (pos == null) {
pos = new ChunkPosition((int) player.posX, (int) player.posY, (int) player.posZ);
world = player.worldObj;
} else {
world =
ItemAmadronTablet.getWorldForDimension(
ItemAmadronTablet.getItemProvidingDimension(player.getCurrentEquippedItem()));
}
EntityDrone drone =
(EntityDrone)
PneumaticRegistry.getInstance()
.retrieveItemsAmazonStyle(
world,
pos.chunkPosX,
pos.chunkPosY,
pos.chunkPosZ,
stacks.toArray(new ItemStack[stacks.size()]));
drone.setHandlingOffer(offer, shoppingAmounts[i], player.getCurrentEquippedItem());
} else {
FluidStack queryingFluid = ((FluidStack) offer.getInput()).copy();
queryingFluid.amount *= shoppingAmounts[i];
ChunkPosition pos =
ItemAmadronTablet.getLiquidProvidingLocation(player.getCurrentEquippedItem());
if (pos != null) {
World world =
ItemAmadronTablet.getWorldForDimension(
ItemAmadronTablet.getLiquidProvidingDimension(
player.getCurrentEquippedItem()));
EntityDrone drone =
(EntityDrone)
PneumaticRegistry.getInstance()
.retrieveFluidAmazonStyle(
world, pos.chunkPosX, pos.chunkPosY, pos.chunkPosZ, queryingFluid);
drone.setHandlingOffer(offer, shoppingAmounts[i], player.getCurrentEquippedItem());
}
}
}
}
Arrays.fill(shoppingAmounts, 0);
Arrays.fill(shoppingItems, -1);
} else if (guiID == 2) {
player.openGui(
PneumaticCraft.instance,
CommonProxy.EnumGuiId.AMADRON_ADD_TRADE.ordinal(),
player.worldObj,
0,
0,
0);
}
}