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Added a helper for merging stacks

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Krapht 2013-01-26 03:24:37 +01:00
parent 35e3532f3d
commit 1b4f9fb431
1 changed files with 48 additions and 0 deletions
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common/buildcraft/core/inventory/StackMergeHelper.java Normal file
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/**
* Copyright (c) SpaceToad, 2011
* http://www.mod-buildcraft.com
*
* BuildCraft is distributed under the terms of the Minecraft Mod Public
* License 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.core.inventory;
import net.minecraft.item.ItemStack;
public class StackMergeHelper {
/**
* Checks if two ItemStacks are identical enough to be merged
* @param stack1 - The first stack
* @param stack2 - The second stack
* @return true if stacks can be merged, false otherwise
*/
public boolean canStacksMerge(ItemStack stack1, ItemStack stack2){
if (stack1 == null || stack2 == null) return false;
if (!stack1.isItemEqual(stack2)) return false;
if (!ItemStack.areItemStackTagsEqual(stack1, stack2)) return false;
return true;
}
/**
* Merges mergeSource into mergeTarget
* @param mergeSource - The stack to merge into mergeTarget, this stack is not modified
* @param mergeTarget - The target merge, this stack is modified if doMerge is set
* @param doMerge - To actually do the merge
* @return The number of items that was successfully merged.
*/
public int mergeStacks(ItemStack mergeSource, ItemStack mergeTarget, boolean doMerge){
if (!canStacksMerge(mergeSource, mergeTarget)) return 0;
int mergeCount = Math.min(mergeTarget.getMaxStackSize() - mergeTarget.stackSize, mergeSource.stackSize);
if (mergeCount < 1) return 0;
if (doMerge){
mergeTarget.stackSize += mergeCount;
}
return mergeCount;
}
}