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path: root/main/java/gregtech/api/objects/GT_ItemStack.java
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package gregtech.api.objects;

import gregtech.api.util.GT_Utility;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;

public class GT_ItemStack {
	public final Item mItem;
	public final byte mStackSize;
	public final short mMetaData;
	
	public GT_ItemStack(Item aItem, long aStackSize, long aMetaData) {
		mItem = aItem;
		mStackSize = (byte)aStackSize;
		mMetaData = (short)aMetaData;
	}
	
	public GT_ItemStack(ItemStack aStack) {
		this(aStack==null?null:aStack.getItem(), aStack==null?0:aStack.stackSize, aStack==null?0:Items.feather.getDamage(aStack));
	}
	
	public GT_ItemStack(int aHashCode) {
		this(GT_Utility.intToStack(aHashCode));
	}
	
	public ItemStack toStack() {
		if (mItem == null) return null;
		return new ItemStack(mItem, 1, mMetaData);
	}
	
	public boolean isStackEqual(ItemStack aStack) {
		return GT_Utility.areStacksEqual(toStack(), aStack);
	}
	
	public boolean isStackEqual(GT_ItemStack aStack) {
		return GT_Utility.areStacksEqual(toStack(), aStack.toStack());
	}
	
	@Override
	public boolean equals(Object aStack) {
		if (aStack == this) return true;
		if (aStack instanceof GT_ItemStack) {
			return ((GT_ItemStack)aStack).mItem == mItem && ((GT_ItemStack)aStack).mMetaData == mMetaData;}
		return false;
	}
	
	@Override
	public int hashCode() {
		return GT_Utility.stackToInt(toStack());
	}
}