ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/util/StackUtil.java

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/*
* This file ("StackUtil.java") is part of the Actually Additions mod for Minecraft.
* It is created and owned by Ellpeck and distributed
* under the Actually Additions License to be found at
* http://ellpeck.de/actaddlicense
* View the source code at https://github.com/Ellpeck/ActuallyAdditions
*
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* © 2015-2017 Ellpeck
*/
package de.ellpeck.actuallyadditions.mod.util;
import de.ellpeck.actuallyadditions.api.misc.IDisableableItem;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.NonNullList;
public final class StackUtil{
public static ItemStack validateCopy(ItemStack stack){
if(isValid(stack)){
return stack.copy();
}
else{
return getNull();
}
}
public static ItemStack validateCheck(ItemStack stack){
if(isValid(stack)){
return stack;
}
else{
return getNull();
}
}
public static boolean isValid(ItemStack stack){//Stacks are nonnull. If we are making null stacks we're stupid anyway.
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if(stack == null) AwfulUtil.callTheFuckinPolice("Oh yeah some idiot somewhere threw a null itemstack at us, might've been us, but whatever");
Item i = stack.getItem();
if(i instanceof IDisableableItem) return !((IDisableableItem) i).isDisabled();
return !stack.isEmpty();
}
public static ItemStack getNull(){
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return ItemStack.EMPTY;
}
public static int getStackSize(ItemStack stack){
if(!isValid(stack)){
return 0;
}
else{
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return stack.getCount();
}
}
public static ItemStack setStackSize(ItemStack stack, int size){
return setStackSize(stack, size, false);
}
public static ItemStack setStackSize(ItemStack stack, int size, boolean containerOnEmpty){
if(size <= 0){
if(isValid(stack) && containerOnEmpty){
return stack.getItem().getContainerItem(stack);
}
else{
return getNull();
}
}
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stack.setCount(size);
return stack;
}
public static ItemStack addStackSize(ItemStack stack, int size){
return addStackSize(stack, size, false);
}
public static ItemStack addStackSize(ItemStack stack, int size, boolean containerOnEmpty){
return setStackSize(stack, getStackSize(stack)+size, containerOnEmpty);
}
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public static boolean isIInvEmpty(NonNullList<ItemStack> slots){
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for(ItemStack stack : slots){
if(StackUtil.isValid(stack)){
return false;
}
}
return true;
}
public static NonNullList<ItemStack> createSlots(int size){
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return NonNullList.withSize(size, getNull());
}
}