82 lines
2.5 KiB
Java
82 lines
2.5 KiB
Java
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package world.bentobox.challenges.utils;
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import org.bukkit.Material;
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import org.bukkit.inventory.ItemStack;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Util methods used in different situations.
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*/
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public class Utils
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{
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/**
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* This method groups input items in single itemstack with correct amount and returns it.
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* Allows to remove duplicate items from list.
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* @param requiredItems Input item list
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* @return List that contains unique items that cannot be grouped.
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*/
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public static List<ItemStack> groupEqualItems(List<ItemStack> requiredItems)
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{
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List<ItemStack> returnItems = new ArrayList<>(requiredItems.size());
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// Group all equal items in singe stack, as otherwise it will be too complicated to check if all
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// items are in players inventory.
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for (ItemStack item : requiredItems)
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{
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boolean isUnique = true;
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int i = 0;
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final int requiredSize = returnItems.size();
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while (i < requiredSize && isUnique)
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{
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ItemStack required = returnItems.get(i);
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// Merge items which meta can be ignored or is similar to item in required list.
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if (Utils.canIgnoreMeta(item.getType()) && item.getType().equals(required.getType()) ||
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required.isSimilar(item))
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{
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required.setAmount(required.getAmount() + item.getAmount());
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isUnique = false;
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}
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i++;
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}
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if (isUnique)
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{
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// The same issue as in other places. Clone prevents from changing original item.
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returnItems.add(item.clone());
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}
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}
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return returnItems;
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}
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/**
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* This method returns if meta data of these items can be ignored. It means, that items will be searched
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* and merged by they type instead of using ItemStack#isSimilar(ItemStack) method.
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*
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* This limits custom Challenges a lot. It comes from ASkyBlock times, and that is the reason why it is
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* still here. It would be a great Challenge that could be completed by collecting 4 books, that cannot
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* be crafted. Unfortunately, this prevents it.
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* The same happens with firework rockets, enchanted books and filled maps.
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* In future it should be able to specify, which items meta should be ignored when adding item in required
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* item list.
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*
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* @param material Material that need to be checked.
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* @return True if material meta can be ignored, otherwise false.
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*/
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public static boolean canIgnoreMeta(Material material)
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{
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return material.equals(Material.FIREWORK_ROCKET) ||
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material.equals(Material.ENCHANTED_BOOK) ||
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material.equals(Material.WRITTEN_BOOK) ||
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material.equals(Material.FILLED_MAP);
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}
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}
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