NullPointerException in Plugin.

When our command (CelestialsLLC) ported plugin CivCraft (github.com/ataranlen/civcraft) to bukkit version 1_6_3R on minecraft version 1.6.4 we ran into problem java.lang.NullPointerException (https://pastebin.com/LA6UWbVx)

code (open) code (close)

AttributeUtil:

Code:

(231)public AttributeUtil(ItemStack stack) {
        // Create a CraftItemStack (under the hood)
        this.nmsStack = CraftItemStack.asNMSCopy(stack);
       
        if (this.nmsStack == null) {
            return;
        }
       
        if (nmsStack == null) {
            CivLog.error("Couldn't make NMS copyyy of:"+stack);
            this.nmsStack = CraftItemStack.asNMSCopy(ItemManager.createItemStack(CivData.WOOL, 1));
            if (this.nmsStack == null) {
                return;
            }
        }
       
        // Load NBT
        if (nmsStack.tag == null) {
            parent = (nmsStack.tag = new NBTTagCompound());
        } else {
            parent = nmsStack.tag;
        }
       
        // Load attribute list
        if (parent.hasKey("AttributeModifiers")) {
            attributes = parent.getList("AttributeModifiers");
        } else {
            /* No attributes on this item detected. */
            attributes = new NBTTagList();
            parent.set("AttributeModifiers", attributes);
        }
(262)    }

LoreMaterial:

Code:

public static ItemStack spawn(LoreMaterial material) {
(269)    return spawn(material,1);
}

public static ItemStack spawn(LoreMaterial material, int quantity) {
        ItemStack stack = ItemManager.createItemStack(material.getTypeID(), quantity, material.getDamage());
(174)    AttributeUtil attrs = new AttributeUtil(stack);
        setMIDAndName(attrs, material.getId(), material.getName());
       
        if (material instanceof LoreCraftableMaterial) {
            LoreCraftableMaterial craftMat = (LoreCraftableMaterial)material;
                attrs.addLore(CivColor.ITALIC+craftMat.getConfigMaterial().category);
                if (craftMat.getConfigMaterial().tradeable) {
                    attrs.setCivCraftProperty("tradeable", "true");
                }
                if (craftMat.getConfigMaterial().tradeValue >= 0) {
                    attrs.setCivCraftProperty("tradeValue", ""+craftMat.getConfigMaterial().tradeValue);
                }
                if (craftMat.getConfigMaterial().shiny) {
                    attrs.setShiny();
                }
        }
       
        material.applyAttributes(attrs);
        return attrs.getStack();
    }

LoreCraftableMaterial:

Code:

public static void buildRecipes() {
        /*
         * Loads in materials from configuration file.
         */
        for (LoreCraftableMaterial loreMat : materials.values()) {
            if (!loreMat.isCraftable()) {
                continue;
            }
           
(217)        ItemStack stack = LoreMaterial.spawn(loreMat);           
            ConfigMaterial configMaterial = loreMat.configMaterial;
           
            if (loreMat.isShaped()) {
                ItemStack[] matrix = new ItemStack[10];
                ShapedRecipe recipe = new ShapedRecipe(stack);
                recipe.shape(configMaterial.shape[0], configMaterial.shape[1], configMaterial.shape[2]);
               
                /* Setup the ingredients. */
                for (ConfigIngredient ingred : configMaterial.ingredients.values()) {
                    ItemStack ingredStack = null;

                    if (ingred.custom_id == null) {
                        recipe.setIngredient(ingred.letter.charAt(0), ItemManager.getMaterialData(ingred.type_id, ingred.data));
                        ingredStack = ItemManager.createItemStack(ingred.type_id, 1, (short)ingred.data);
                    } else{
                        LoreCraftableMaterial customLoreMat = materials.get(ingred.custom_id);
                        if (customLoreMat == null) {
                            CivLog.warning("Couldn't find custom material id:"+ingred.custom_id);
                        }
                       
                        ConfigMaterial customMat = customLoreMat.configMaterial;
                        if (customMat != null) {
                            recipe.setIngredient(ingred.letter.charAt(0), ItemManager.getMaterialData(customMat.item_id, customMat.item_data));
                        } else {
                            CivLog.warning("Couldn't find custom material id:"+ingred.custom_id);
                        }

                        ingredStack = LoreMaterial.spawn(customLoreMat);
                    }
               
                    /* Add this incred to the shape. */
                    int i = 0;
                    for (String row : configMaterial.shape) {
                        for (int c = 0; c < row.length(); c++) {
                            if (row.charAt(c) == ingred.letter.charAt(0)) {
                                matrix[i] = ingredStack;
                            } else if (row.charAt(c) == ' '){
                                matrix[i] = new ItemStack(Material.AIR, 0, (short)-1);
                            }
                            i++;
                        }
                    }
               
                }
               
                shapedRecipes.put(loreMat, matrix);
                String key = getShapedRecipeKey(matrix);
                shapedKeys.put(key, loreMat);
               

                /* Register recipe with server. */
                Bukkit.getServer().addRecipe(recipe);
            } else {
                /* Shapeless Recipe */
                ShapelessRecipe recipe = new ShapelessRecipe(stack);
                LinkedList<ItemStack> items = new LinkedList<ItemStack>();
                ItemStack[] matrix = new ItemStack[9];
                int matrixIndex = 0;
               
                /* Setup the ingredients. */
                for (ConfigIngredient ingred : configMaterial.ingredients.values()) {
                    ItemStack ingredStack = null;
                   
                    try {
                    if (ingred.custom_id == null) {
                        recipe.addIngredient(ingred.count, ItemManager.getMaterialData(ingred.type_id, ingred.data));
                        ingredStack = ItemManager.createItemStack(ingred.type_id, 1, (short)ingred.data);
                    } else {
                        LoreCraftableMaterial customLoreMat = materials.get(ingred.custom_id);
                        if (customLoreMat == null) {
                            CivLog.error("Couldn't configure ingredient:"+ingred.custom_id+" in config mat:"+configMaterial.id);
                        }
                        ConfigMaterial customMat = customLoreMat.configMaterial;
                        if (customMat != null) {
                            recipe.addIngredient(ingred.count, ItemManager.getMaterialData(customMat.item_id, customMat.item_data));
                            ingredStack = LoreMaterial.spawn(customLoreMat);
                        } else {
                            CivLog.warning("Couldn't find custom material id:"+ingred.custom_id);
                        }
                    }
                    } catch (IllegalArgumentException e) {
                        CivLog.warning("Trying to process ingredient:"+ingred.type_id+":"+ingred.custom_id+" for material:"+configMaterial.id);
                        throw e;
                    }
                   
                    if (ingredStack != null) {
                    //    loreMat.shaplessIngredientList.add(ingredStack);
                        for (int i = 0; i < ingred.count; i++) {
                            if (matrixIndex > 9) {
                                break;
                            }
                           
                            matrix[matrixIndex] = ingredStack;
                            matrixIndex++;
                        }
                       
                        ingredStack.setAmount(ingred.count);
                        items.add(ingredStack);
                    }
                }
               
                shapelessRecipes.put(loreMat, items);
                String key = getShapelessRecipeKey(matrix);
                shapelessKeys.put(key, loreMat);
               
                /* Register recipe with server. */
                Bukkit.getServer().addRecipe(recipe);
            }
        }

CivSettings:

Code:

public static void init(JavaPlugin plugin) throws FileNotFoundException, IOException, InvalidConfigurationException, InvalidConfiguration {
        CivSettings.plugin = (CivCraft)plugin;
       

        String languageFile = CivSettings.getStringBase("localization_file");
        localize = new Localize(plugin, languageFile);


        CivLog.debug(localize.localizedString("welcome_string","test",1337,100.50));
        CURRENCY_NAME = localize.localizedString("civ_currencyName");
        CivGlobal.fullMessage = CivSettings.localize.localizedString("civGlobal_serverFullMsg");
       
        // Check for required data folder, if it's not there export it.
        CivSettings.validateFiles();
       
        initRestrictedItems();
        initRestrictedUndoBlocks();
        initSwitchItems();
        initRestrictedSpawns();
        initBlockPlaceExceptions();
        initPlayerEntityWeapons();
       
        loadConfigFiles();
        loadConfigObjects();
       
        Perk.init();
        Unit.init();
       
        //CivSettings.leather_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.leather_speed");
        //CivSettings.metal_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.metal_speed");
        CivSettings.T1_leather_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T1_leather_speed");
        CivSettings.T2_leather_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T2_leather_speed");
        CivSettings.T3_leather_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T3_leather_speed");
        CivSettings.T4_leather_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T4_leather_speed");
        CivSettings.T1_metal_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T1_metal_speed");
        CivSettings.T2_metal_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T2_metal_speed");
        CivSettings.T3_metal_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T3_metal_speed");
        CivSettings.T4_metal_speed = (float)CivSettings.getDouble(CivSettings.unitConfig, "base.T4_metal_speed");
        CivSettings.normal_speed = 0.2f;   
       
        for (Object obj : civConfig.getList("global.start_kit")) {
            if (obj instanceof String) {
                kitItems.add((String)obj);
            }
        }
       
       
        CivGlobal.banWords.add("fuck");
        CivGlobal.banWords.add("shit");
        CivGlobal.banWords.add("nigger");
        CivGlobal.banWords.add("faggot");
        CivGlobal.banWords.add("gay");
        CivGlobal.banWords.add("rape");
        CivGlobal.banWords.add("http");
        CivGlobal.banWords.add("cunt");
       
        iron_rate = CivSettings.getDouble(civConfig, "ore_rates.iron");
        gold_rate = CivSettings.getDouble(civConfig, "ore_rates.gold");
        diamond_rate = CivSettings.getDouble(civConfig, "ore_rates.diamond");
        emerald_rate = CivSettings.getDouble(civConfig, "ore_rates.emerald");
        startingCoins = CivSettings.getDouble(civConfig, "global.starting_coins");
       
        alwaysCrumble.add(CivData.BEDROCK);
        alwaysCrumble.add(CivData.COAL_BLOCK);
        alwaysCrumble.add(CivData.EMERALD_BLOCK);
        alwaysCrumble.add(CivData.LAPIS_BLOCK);
        alwaysCrumble.add(CivData.SPONGE);
        alwaysCrumble.add(CivData.HAY_BALE);
        alwaysCrumble.add(CivData.GOLD_BLOCK);
        alwaysCrumble.add(CivData.DIAMOND_BLOCK);
        alwaysCrumble.add(CivData.IRON_BLOCK);
        alwaysCrumble.add(CivData.REDSTONE_BLOCK);
        alwaysCrumble.add(CivData.ENDER_CHEST);
        alwaysCrumble.add(CivData.BEACON);
       
        LoreEnhancement.init();
        LoreCraftableMaterial.buildStaticMaterials();
 (306)       LoreCraftableMaterial.buildRecipes();
        Template.initAttachableTypes();
       
        if (CivSettings.plugin.hasPlugin("VanishNoPacket")) {
            hasVanishNoPacket = true;
        }
       
        if (CivSettings.plugin.hasPlugin("TitleAPI")) {
            hasTitleAPI = true;
        }

    }

Please help us!
HAVE A GOOD DAY!

 

Is itemstack null? for the spawn method? Are you sure 'stack' for the util is not null?

 

yeah,sure

 

You have found a solution to this problem?! Urgent help!

 

@timtower No, I just have the same problem.