206 lines
5.3 KiB
Java
206 lines
5.3 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.items.wrapper;
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import net.minecraft.inventory.IInventory;
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import net.minecraft.item.ItemStack;
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import net.minecraftforge.items.IItemHandlerModifiable;
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import net.minecraftforge.items.ItemHandlerHelper;
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import javax.annotation.Nonnull;
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public class InvWrapper implements IItemHandlerModifiable
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{
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private final IInventory inv;
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public InvWrapper(IInventory inv)
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{
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this.inv = inv;
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}
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@Override
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public boolean equals(Object o)
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{
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if (this == o)
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return true;
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if (o == null || getClass() != o.getClass())
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return false;
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InvWrapper that = (InvWrapper) o;
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return getInv().equals(that.getInv());
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}
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@Override
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public int hashCode()
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{
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return getInv().hashCode();
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}
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@Override
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public int getSlots()
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{
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return getInv().getSizeInventory();
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}
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@Override
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@Nonnull
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public ItemStack getStackInSlot(int slot)
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{
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return getInv().getStackInSlot(slot);
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}
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@Override
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@Nonnull
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public ItemStack insertItem(int slot, @Nonnull ItemStack stack, boolean simulate)
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{
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if (stack.isEmpty())
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return ItemStack.EMPTY;
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if (!getInv().isItemValidForSlot(slot, stack))
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return stack;
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ItemStack stackInSlot = getInv().getStackInSlot(slot);
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int m;
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if (!stackInSlot.isEmpty())
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{
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if (!ItemHandlerHelper.canItemStacksStack(stack, stackInSlot))
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return stack;
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m = Math.min(stack.getMaxStackSize(), getSlotLimit(slot)) - stackInSlot.getCount();
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if (stack.getCount() <= m)
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{
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if (!simulate)
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{
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ItemStack copy = stack.copy();
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copy.grow(stackInSlot.getCount());
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getInv().setInventorySlotContents(slot, copy);
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getInv().markDirty();
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}
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return ItemStack.EMPTY;
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}
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else
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{
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// copy the stack to not modify the original one
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stack = stack.copy();
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if (!simulate)
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{
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ItemStack copy = stack.splitStack(m);
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copy.grow(stackInSlot.getCount());
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getInv().setInventorySlotContents(slot, copy);
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getInv().markDirty();
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return stack;
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}
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else
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{
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stack.shrink(m);
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return stack;
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}
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}
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}
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else
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{
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m = Math.min(stack.getMaxStackSize(), getSlotLimit(slot));
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if (m < stack.getCount())
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{
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// copy the stack to not modify the original one
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stack = stack.copy();
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if (!simulate)
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{
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getInv().setInventorySlotContents(slot, stack.splitStack(m));
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getInv().markDirty();
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return stack;
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}
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else
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{
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stack.shrink(m);
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return stack;
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}
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}
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else
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{
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if (!simulate)
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{
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getInv().setInventorySlotContents(slot, stack);
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getInv().markDirty();
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}
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return ItemStack.EMPTY;
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}
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}
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}
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@Override
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@Nonnull
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public ItemStack extractItem(int slot, int amount, boolean simulate)
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{
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if (amount == 0)
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return ItemStack.EMPTY;
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ItemStack stackInSlot = getInv().getStackInSlot(slot);
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if (stackInSlot.isEmpty())
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return ItemStack.EMPTY;
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if (simulate)
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{
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if (stackInSlot.getCount() < amount)
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{
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return stackInSlot.copy();
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}
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else
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{
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ItemStack copy = stackInSlot.copy();
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copy.setCount(amount);
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return copy;
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}
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}
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else
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{
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int m = Math.min(stackInSlot.getCount(), amount);
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ItemStack decrStackSize = getInv().decrStackSize(slot, m);
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getInv().markDirty();
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return decrStackSize;
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}
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}
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@Override
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public void setStackInSlot(int slot, @Nonnull ItemStack stack)
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{
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getInv().setInventorySlotContents(slot, stack);
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}
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@Override
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public int getSlotLimit(int slot)
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{
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return getInv().getInventoryStackLimit();
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}
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public IInventory getInv()
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{
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return inv;
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}
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}
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