Rework AEItemStack (#3091)
* Use itemstack as itemdef * HIGH_TAG/LOW_TAG should be compared both directions * Remove getTagCompound * Make Itemlist implementation independent * Cache item id for performance reasons * Add preconditions to saveguard against external meddling * Chache itemDamage * Remove IAEStackSearchKey for now, rename getDisplayStack
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/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 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
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* GNU 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 License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.util.item;
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import java.util.Objects;
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import com.google.common.base.Preconditions;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import net.minecraft.nbt.NBTTagCompound;
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import appeng.api.config.FuzzyMode;
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import appeng.util.Platform;
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final class AESharedItemStack implements Comparable<AESharedItemStack>
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{
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private static final NBTTagCompound LOW_TAG = new NBTTagCompound();
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private static final NBTTagCompound HIGH_TAG = new NBTTagCompound();
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private final ItemStack itemStack;
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private final int itemId;
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private final int itemDamage;
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public AESharedItemStack( final ItemStack itemStack )
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{
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this.itemStack = itemStack;
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this.itemId = Item.getIdFromItem( itemStack.getItem() );
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this.itemDamage = itemStack.getItemDamage();
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}
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ItemStack getDefinition()
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{
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return this.itemStack;
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}
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int getItemDamage()
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{
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return this.itemDamage;
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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 Objects.hash( itemStack.getItem(), this.itemDamage );
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}
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@Override
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public boolean equals( final Object obj )
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{
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if( obj instanceof AESharedItemStack )
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{
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final AESharedItemStack other = (AESharedItemStack) obj;
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Preconditions.checkState( this.itemStack.getCount() == 1, "ItemStack#getCount() has to be 1" );
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Preconditions.checkArgument( other.getDefinition().getCount() == 1, "ItemStack#getCount() has to be 1" );
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if( this.itemStack == other.itemStack )
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{
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return true;
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}
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return ItemStack.areItemStacksEqual( this.itemStack, other.itemStack );
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}
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return false;
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}
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@Override
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public int compareTo( final AESharedItemStack b )
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{
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Preconditions.checkState( this.itemStack.getCount() == 1, "ItemStack#getCount() has to be 1" );
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Preconditions.checkArgument( b.getDefinition().getCount() == 1, "ItemStack#getCount() has to be 1" );
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if( this.itemStack == b.getDefinition() )
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{
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return 0;
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}
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final int id = this.itemId - b.itemId;
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if( id != 0 )
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{
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return id;
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}
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final int damageValue = this.itemDamage - b.itemDamage;
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if( damageValue != 0 )
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{
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return damageValue;
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}
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return this.compareNBT( b.getDefinition() );
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}
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private int compareNBT( final ItemStack b )
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{
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if( Platform.itemComparisons().isNbtTagEqual( this.itemStack.getTagCompound(), b.getTagCompound() ) )
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{
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return 0;
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}
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if( this.itemStack.getTagCompound() == LOW_TAG || b.getTagCompound() == HIGH_TAG )
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{
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return -1;
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}
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if( this.itemStack.getTagCompound() == HIGH_TAG || b.getTagCompound() == LOW_TAG )
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{
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return 1;
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}
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final int nbt = ( this.itemStack.hasTagCompound() ? this.itemStack.getTagCompound().hashCode() : 0 ) - ( b.hasTagCompound() ? b.getTagCompound()
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.hashCode() : 0 );
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if( nbt != 0 )
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{
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return nbt;
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}
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return System.identityHashCode( this.itemStack.getTagCompound() ) - System.identityHashCode( b.getTagCompound() );
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}
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public AESharedItemStack getLowerBound( final FuzzyMode fuzzy, final boolean ignoreMeta )
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{
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Preconditions.checkState( this.itemStack.getCount() == 1, "ItemStack#getCount() has to be 1" );
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final ItemStack newDef = this.itemStack.copy();
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if( ignoreMeta )
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{
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newDef.setItemDamage( 0 );
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}
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else
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{
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if( newDef.getItem().isDamageable() )
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{
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if( fuzzy == FuzzyMode.IGNORE_ALL )
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{
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newDef.setItemDamage( 0 );
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}
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else if( fuzzy == FuzzyMode.PERCENT_99 )
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{
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if( this.itemStack.getItemDamage() == 0 )
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{
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newDef.setItemDamage( 0 );
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}
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else
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{
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newDef.setItemDamage( 0 );
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}
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}
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else
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{
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final int breakpoint = fuzzy.calculateBreakPoint( this.itemStack.getMaxDamage() );
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newDef.setItemDamage( breakpoint <= this.itemDamage ? breakpoint : 0 );
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}
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}
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newDef.setTagCompound( LOW_TAG );
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}
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return new AESharedItemStack( newDef );
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}
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public AESharedItemStack getUpperBound( final FuzzyMode fuzzy, final boolean ignoreMeta )
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{
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Preconditions.checkState( this.itemStack.getCount() == 1, "ItemStack#getCount() has to be 1" );
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final ItemStack newDef = this.itemStack.copy();
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if( ignoreMeta )
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{
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newDef.setItemDamage( Integer.MAX_VALUE );
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}
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else
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{
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if( newDef.getItem().isDamageable() )
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{
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if( fuzzy == FuzzyMode.IGNORE_ALL )
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{
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newDef.setItemDamage( this.itemStack.getMaxDamage() + 1 );
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}
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else if( fuzzy == FuzzyMode.PERCENT_99 )
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{
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if( this.itemStack.getItemDamage() == 0 )
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{
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newDef.setItemDamage( 0 );
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}
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else
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{
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newDef.setItemDamage( this.itemStack.getMaxDamage() + 1 );
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}
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}
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else
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{
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final int breakpoint = fuzzy.calculateBreakPoint( this.itemStack.getMaxDamage() );
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newDef.setItemDamage( this.itemDamage < breakpoint ? breakpoint - 1 : this.itemStack.getMaxDamage() + 1 );
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}
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}
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newDef.setTagCompound( HIGH_TAG );
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}
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return new AESharedItemStack( newDef );
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}
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}
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