Fixed NPE in wearable packet

src/main/java/com/darkona/adventurebackpack/block/TileAdventureBackpack.java

@@ -328,7 +328,7 @@ public void removeSleepingBag(World world)
     public int[] getAccessibleSlotsFromSide(int side)
     {
         if (GeneralReference.isDimensionAllowed(worldObj.provider.dimensionId))
-            return MAIN_INVENTORY_SLOTS;
+            return MAIN_INVENTORY_SLOTS.clone();
 
         return null;
     }

src/main/java/com/darkona/adventurebackpack/client/gui/GuiOverlay.java

@@ -182,8 +182,8 @@ public void onRenderExperienceBar(RenderGameOverlayEvent.Post event)
                 }
                 if (Wearing.isWearingBackpack(player))
                 {
-                    int u[] = {10, 10};
-                    int v[] = {0, 0};
+                    int[] u = {10, 10};
+                    int[] v = {0, 0};
                     int[] xStart = {xPos, xPos + textureWidth + 1};
                     int[] yStart = {yPos, yPos};
                     short tank = -1;

src/main/java/com/darkona/adventurebackpack/client/gui/ModGuiConfig.java

@@ -25,7 +25,7 @@ public ModGuiConfig(GuiScreen guiScreen)
 
     private static List<IConfigElement> getConfigElements()
     {
-        List<IConfigElement> configElements = new ArrayList<IConfigElement>();
+        List<IConfigElement> configElements = new ArrayList<>();
 
         List<String> topCategories = Arrays.asList("gameplay", "graphics", "sound", "items", "worldgen", "experimental");
         for (String categoryName : topCategories)

src/main/java/com/darkona/adventurebackpack/inventory/ContainerAdventure.java

@@ -67,7 +67,7 @@ public void detectAndSendChanges()
                 requestedUpdate = false;
             }
 
-            if ((detectItemChanges() | detectFluidChanges()))
+            if (detectItemChanges() | detectFluidChanges())
             {
                 requestedUpdate = true;
             }

src/main/java/com/darkona/adventurebackpack/inventory/ContainerBackpack.java

@@ -63,15 +63,8 @@ private void makeSlots(InventoryPlayer invPlayer)
         int startX = 62;
         int startY = 7;
         for (int row = 0; row < BACK_INV_ROWS; row++) // 6*8 inventory, 48 Slots (#1-#48) [36-83]
-        {
             for (int col = 0; col < BACK_INV_COLUMNS; col++)
-            {
-                int offsetX = startX + (18 * col);
-                int offsetY = startY + (18 * row);
-
-                addSlotToContainer(new SlotBackpack((IInventoryBackpack) inventory, (row * BACK_INV_COLUMNS + col), offsetX, offsetY));
-            }
-        }
+                addSlotToContainer(new SlotBackpack(inventory, (row * BACK_INV_COLUMNS + col), (startX + 18 * col), (startY + 18 * row)));
 
         addSlotToContainer(new SlotTool(inventory, TOOL_UPPER, 44, 79)); // #49 [84]
         addSlotToContainer(new SlotTool(inventory, TOOL_LOWER, 44, 97)); // #50 [85]
@@ -82,17 +75,10 @@ private void makeSlots(InventoryPlayer invPlayer)
         addSlotToContainer(new SlotFluid(inventory, BUCKET_OUT_RIGHT, 226, 37)); // #54 [89]
 
         startX = 215;
-        startY = -2500;
-        //startY = LoadedMods.DEV_ENV ? 125 : -2500;
+        startY = -2500; //startY = LoadedMods.DEV_ENV ? 125 : -2500;
         for (int row = 0; row < MATRIX_DIMENSION; row++) // craftMatrix, usually 9 slots, [90-98]
-        {
             for (int col = 0; col < MATRIX_DIMENSION; col++)
-            {
-                int offsetX = startX + (18 * col);
-                int offsetY = startY + (18 * row);
-                addSlotToContainer(new SlotCraftMatrix(craftMatrix, (row * MATRIX_DIMENSION + col), offsetX, offsetY));
-            }
-        }
+                addSlotToContainer(new SlotCraftMatrix(craftMatrix, (row * MATRIX_DIMENSION + col), (startX + 18 * col), (startY + 18 * row)));
 
         addSlotToContainer(new SlotCraftResult(this, invPlayer.player, craftMatrix, craftResult, 0, 226, 97)); // craftResult [99]
         syncCraftMatrixWithInventory(true);
@@ -241,12 +227,9 @@ protected void dropContentOnClose()
     public void onCraftMatrixChanged(IInventory inventory)
     {
         if (ConfigHandler.tinkerToolsMaintenance && TinkersUtils.isToolOrWeapon(craftMatrix.getStackInSlot(4)))
-        {
             craftResult.setInventorySlotContents(0, TinkersUtils.getTinkersRecipe(craftMatrix));
-            return;
-        }
-
-        craftResult.setInventorySlotContents(0, CraftingManager.getInstance().findMatchingRecipe(craftMatrix, player.worldObj));
+        else
+            craftResult.setInventorySlotContents(0, CraftingManager.getInstance().findMatchingRecipe(craftMatrix, player.worldObj));
     }
 
     protected void syncCraftMatrixWithInventory(boolean preCraft)

src/main/java/com/darkona/adventurebackpack/inventory/SlotBackpack.java

@@ -1,5 +1,6 @@
 package com.darkona.adventurebackpack.inventory;
 
+import net.minecraft.inventory.IInventory;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 
@@ -29,7 +30,7 @@ public class SlotBackpack extends SlotAdventure
             // Project Red Exploration Backpacks
             "mrtjp.projectred.exploration.ItemBackpack",};
 
-    SlotBackpack(IInventoryBackpack inventory, int slotIndex, int posX, int posY)
+    SlotBackpack(IInventory inventory, int slotIndex, int posX, int posY)
     {
         super(inventory, slotIndex, posX, posY);
     }

src/main/java/com/darkona/adventurebackpack/inventory/SlotFluid.java

@@ -42,40 +42,11 @@ static boolean isFilled(ItemStack stack)
         return FluidContainerRegistry.isFilledContainer(stack);
     }
 
-    static boolean isBucket(ItemStack stack)
-    {
-        return FluidContainerRegistry.isBucket(stack);
-    }
-
-    static boolean isEmptyBucket(ItemStack stack)
-    {
-        return FluidContainerRegistry.isBucket(stack) && isEmpty(stack);
-    }
-
-    static boolean isFilledBucket(ItemStack stack)
-    {
-        return FluidContainerRegistry.isBucket(stack) && isFilled(stack);
-    }
-
     static boolean isEqualFluid(ItemStack container, FluidTank tank)
     {
         return getFluidID(container) == getFluidID(tank);
     }
 
-    static String getFluidName(ItemStack stack)
-    {
-        if (stack == null || isEmpty(stack))
-            return "";
-        return FluidContainerRegistry.getFluidForFilledItem(stack).getFluid().getName();
-    }
-
-    static String getFluidName(FluidTank tank)
-    {
-        if (tank == null || tank.getFluidAmount() <= 0)
-            return "";
-        return tank.getFluid().getFluid().getName();
-    }
-
     static int getFluidID(ItemStack stack)
     {
         if (stack == null || isEmpty(stack))

src/main/java/com/darkona/adventurebackpack/network/PlayerActionPacket.java

@@ -3,6 +3,7 @@
 import io.netty.buffer.ByteBuf;
 
 import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
 import cpw.mods.fml.common.network.simpleimpl.IMessage;
 import cpw.mods.fml.common.network.simpleimpl.IMessageHandler;
 import cpw.mods.fml.common.network.simpleimpl.MessageContext;
@@ -32,21 +33,22 @@ public IMessage onMessage(ActionMessage message, MessageContext ctx)
         {
             EntityPlayerMP player = ctx.getServerHandler().playerEntity;
 
-            if (player != null)
+            if (player != null && !player.isDead)
             {
                 if (message.type == SPIDER_JUMP)
                 {
-                    if (player.ridingEntity != null && player.ridingEntity instanceof EntityFriendlySpider)
+                    if (player.ridingEntity instanceof EntityFriendlySpider)
                     {
                         ((EntityFriendlySpider) player.ridingEntity).setJumping(true);
                     }
                 }
 
                 if (message.type == JETPACK_IN_USE || message.type == JETPACK_NOT_IN_USE)
                 {
-                    if (Wearing.isWearingJetpack(player))
+                    ItemStack jetpack = Wearing.getWearingJetpack(player);
+                    if (jetpack != null)
                     {
-                        InventoryCoalJetpack inv = new InventoryCoalJetpack(Wearing.getWearingJetpack(player));
+                        InventoryCoalJetpack inv = new InventoryCoalJetpack(jetpack);
                         inv.setInUse(message.type == JETPACK_IN_USE);
                         inv.markDirty();
                     }
@@ -77,10 +79,7 @@ public static class ActionMessage implements IMessage
     {
         private byte type;
 
-        public ActionMessage()
-        {
-
-        }
+        public ActionMessage() {}
 
         public ActionMessage(byte type)
         {

src/main/java/com/darkona/adventurebackpack/network/WearableModePacket.java

@@ -3,6 +3,7 @@
 import io.netty.buffer.ByteBuf;
 
 import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
 import cpw.mods.fml.common.network.ByteBufUtils;
 import cpw.mods.fml.common.network.simpleimpl.IMessage;
 import cpw.mods.fml.common.network.simpleimpl.IMessageHandler;
@@ -31,24 +32,34 @@ public Message onMessage(Message message, MessageContext ctx)
         {
             EntityPlayerMP player = ctx.getServerHandler().playerEntity;
 
-            if (player != null)
+            if (player != null && !player.isDead)
             {
-                if ((message.type == COPTER_ON_OFF || message.type == COPTER_TOGGLE))
-                    ServerActions.toggleCopterPack(player, Wearing.getWearingCopter(player), message.type);
-
+                if (message.type == COPTER_ON_OFF || message.type == COPTER_TOGGLE)
+                {
+                    ItemStack copter = Wearing.getWearingCopter(player);
+                    // for concurrency reasons, at the time of death with OpenBlocks mod, the copter may already be
+                    // in the grave, and Wearing#getWearingCopter will return null (c) Relvl
+                    if (copter != null)
+                        ServerActions.toggleCopterPack(player, copter, message.type);
+                }
                 if (message.type == JETPACK_ON_OFF)
-                    ServerActions.toggleCoalJetpack(player, Wearing.getWearingJetpack(player));
-
-                if (message.type == CYCLING_ON_OFF)
-                    ServerActions.toggleToolCycling(player, Wearing.getWearingBackpack(player));
-
-                if (message.type == NIGHTVISION_ON_OFF)
-                    ServerActions.toggleNightVision(player, Wearing.getWearingBackpack(player));
+                {
+                    ItemStack jetpack = Wearing.getWearingJetpack(player);
+                    if (jetpack != null) // so now we are well-defended
+                        ServerActions.toggleCoalJetpack(player, jetpack);
+                }
+                if (message.type == CYCLING_ON_OFF || message.type == NIGHTVISION_ON_OFF)
+                {
+                    ItemStack backpack = Wearing.getWearingBackpack(player);
+                    if (backpack != null) // null shall not pass!
+                    {
+                        if (message.type == CYCLING_ON_OFF)
+                            ServerActions.toggleToolCycling(player, backpack);
+                        if (message.type == NIGHTVISION_ON_OFF)
+                            ServerActions.toggleNightVision(player, backpack);
+                    }
+                }
             }
-        }
-        if (ctx.side.isClient())
-        {
-
         }
         return null;
     }
@@ -58,10 +69,7 @@ public static class Message implements IMessage
         private byte type;
         private String playerID;
 
-        public Message()
-        {
-
-        }
+        public Message() {}
 
         public Message(byte type, String playerID)
         {

src/main/java/com/darkona/adventurebackpack/reference/BackpackTypes.java

@@ -131,7 +131,7 @@ public enum BackpackTypes
 
         this.meta = (byte) meta;
         this.skinName = skin.isEmpty() ? generateSkinName() : skin;
-        this.props = Sets.immutableEnumSet((Arrays.asList(props)));
+        this.props = Sets.immutableEnumSet(Arrays.asList(props));
     }
 
     BackpackTypes(int meta, Props... props)

src/main/java/com/darkona/adventurebackpack/util/FluidUtils.java

@@ -20,7 +20,7 @@ public static boolean isContainerForFluid(ItemStack container, Fluid fluid)
                 if (data.fluid != null && data.fluid.getFluid() != null
                         && data.fluid.getFluid().getID() == fluid.getID()
                         && (data.emptyContainer.getItem().equals(container.getItem())
-                        || data.filledContainer.getItem().equals(container.getItem())))
+                            || data.filledContainer.getItem().equals(container.getItem())))
                 {
                     return true;
                 }

src/main/java/com/darkona/adventurebackpack/util/TinkersUtils.java

@@ -117,7 +117,6 @@ public static boolean isToolOrWeapon(@Nullable ItemStack stack)
         String cn = stack.getItem().getClass().getName();
         return cn.startsWith(PACKAGE_TCONSTRUCT)
                 && (cn.startsWith(PACKAGE_TOOLS) || cn.startsWith(PACKAGE_WEAPONS) || cn.startsWith(PACKAGE_AMMO));
-
     }
 
     public static boolean isTool(@Nonnull ItemStack stack)