fdsatrew

Thanks you alot. Now my capability work without cast exception. Solution: use implementation link as example.

CAN SOMEONE PLEASE GIVE WORKING CAPABILITY EXAMPLE ON 1.10.2?

It's called in CommonProxy because if remove this method body game crash with NPE. If i try to follow docs with creating and passing this class as argument to my capability registration i got compile error "The method register(Class<T>, Capability.IStorage<T>, Class<? extends T>) in the type CapabilityManager is not applicable for the arguments (Class<IPlayerCapability>, PlayerCapability.PlayerStorage, Class<PlayerFactory>)" import java.util.concurrent.Callable; import fdsatrew.capability.api.IPlayerCapability; class PlayerFactory implements Callable<IPlayerCapability> { @Override public IPlayerCapability call() throws Exception { return new PlayerCapability(); } } If i change my "PlayerFactory" class body to import java.util.concurrent.Callable; import fdsatrew.capability.api.IPlayerCapability; public class PlayerFactory implements Callable<IPlayerCapability>, IPlayerCapability { @Override public IPlayerCapability call() throws Exception { return new PlayerCapability(); } } Compile error are gone, but if i press my custom key same error appear [spoiler=Error] [17:12:27] [server thread/FATAL]: Error executing task java.util.concurrent.ExecutionException: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:26) [util.class:?] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) [MinecraftServer.class:?] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) [integratedServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_102] Caused by: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at fdsatrew.GuiHandler.getServerGuiElement(GuiHandler.java:16) ~[GuiHandler.class:?] at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:251) ~[NetworkRegistry.class:?] at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:87) ~[FMLNetworkHandler.class:?] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2723) ~[EntityPlayer.class:?] at fdsatrew.network.handlers.PlayerInventoryPacketHandler$1.run(PlayerInventoryPacketHandler.java:27) ~[PlayerInventoryPacketHandler$1.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:25) ~[util.class:?] ... 5 more

There are still no solution :c

Ok. I change my code to next, but error keep same because nothing globally changes... Maybe error in my events? Docs says i need PlayerClone event too, but it's for saving capability data after player respawn... @SubscribeEvent public void AttachCapability(AttachCapabilitiesEvent.Entity e) { if (!e.getEntity().hasCapability(PlayerProvider.PLAYER_CAPABILITY, null) && e.getEntity() instanceof EntityPlayer) { e.addCapability(Capabilities.PLAYER_CAPABILITY_ID, new PlayerProvider()); } } I read this docs and i don't see any errors in my code. Update: I add debug message to my attachcapability event and it's works... @SubscribeEvent public void AttachCapability(AttachCapabilitiesEvent.Entity e) { if (!e.getEntity().hasCapability(PlayerProvider.PLAYER_CAPABILITY, null) && e.getEntity() instanceof EntityPlayer) { e.addCapability(Capabilities.PLAYER_CAPABILITY_ID, new PlayerProvider()); System.out.println("Attach Capability"); } } [21:38:46] [Client thread/INFO] [sTDOUT]: [fdsatrew.Main:AttachCapability:66]: Attach Capability

[11:15:45] [server thread/INFO] [sTDOUT]: [fdsatrew.GuiHandler:getServerGuiElement:18]: IPlayerCapability false @Override public Object getServerGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if (player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null) instanceof IPlayerCapability) { System.out.println("IPlayerCapability true"); } else { System.out.println("IPlayerCapability false"); } if (player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { if (guiId == Main.GUI_CUSTOM_INV) { return new ContainerCustomPlayer(player, player.inventory, player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null).inventory); } else { return null; } } return null; } I think we found error, but how attach capability correct?

And whats wrong with my interface? https://github.com/MinecraftForge/MinecraftForge/blob/1.10.x/src/test/java/net/minecraftforge/test/NoBedSleepingTest.java https://github.com/MinecraftForge/MinecraftForge/blob/1.9/src/test/java/net/minecraftforge/test/TestCapabilityMod.java Do same thing...

You can see PlayerProvider code at first post under "Capability code itself". I don't know how to name it correct because i see alot of threads here and in other forums when i learn capability system...

What you mean? I use my capability now just for saving/loading slots in my inventory [spoiler=Container] public class ContainerCustomPlayer extends Container { /** Avoid magic numbers! This will greatly reduce the chance of you making errors in 'transferStackInSlot' method */ private static final int ARMOR_START = InventoryCustomPlayer.INV_SIZE, ARMOR_END = ARMOR_START+3, INV_START = ARMOR_END+1, INV_END = INV_START+26, HOTBAR_START = INV_END+1, HOTBAR_END = HOTBAR_START+8; public ContainerCustomPlayer(EntityPlayer player, InventoryPlayer inventoryPlayer, InventoryCustomPlayer inventoryCustom) { int i; // Add CUSTOM slots - we'll just add two for now, both of the same type. // Make a new Slot class for each different item type you want to add this.addSlotToContainer(new SlotCustom(inventoryCustom, 0, 80, ); this.addSlotToContainer(new SlotCustom(inventoryCustom, 1, 80, 26)); // Add ARMOR slots; note you need to make a public version of SlotArmor // just copy and paste the vanilla code into a new class and change what you need this.addSlotToContainer(new SlotArmor(player, inventoryPlayer, inventoryPlayer.getSizeInventory() - 1, 8, 8, EntityEquipmentSlot.HEAD)); this.addSlotToContainer(new SlotArmor(player, inventoryPlayer, inventoryPlayer.getSizeInventory() - 2, 8, 26, EntityEquipmentSlot.CHEST)); this.addSlotToContainer(new SlotArmor(player, inventoryPlayer, inventoryPlayer.getSizeInventory() - 3, 8, 44, EntityEquipmentSlot.LEGS)); this.addSlotToContainer(new SlotArmor(player, inventoryPlayer, inventoryPlayer.getSizeInventory() - 4, 8, 62, EntityEquipmentSlot.FEET)); // Add vanilla PLAYER INVENTORY - just copied/pasted from vanilla classes for (i = 0; i < 3; ++i) { for (int j = 0; j < 9; ++j) { this.addSlotToContainer(new Slot(inventoryPlayer, j + i * 9 + 9, 8 + j * 18, 84 + i * 18)); } } // Add ACTION BAR - just copied/pasted from vanilla classes for (i = 0; i < 9; ++i) { this.addSlotToContainer(new Slot(inventoryPlayer, i, 8 + i * 18, 142)); } } /** * This should always return true, since custom inventory can be accessed from anywhere */ @Override public boolean canInteractWith(EntityPlayer player) { return true; } int convertEntityEquipmentSlot(EntityEquipmentSlot es) { switch(es) { case HEAD: return 3; case CHEST: return 2; case LEGS: return 1; case FEET: return 0; default: return 0; } } /** * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that. * Basically the same as every other container I make, since I define the same constant indices for all of them */ public ItemStack transferStackInSlot(EntityPlayer player, int par2) { ItemStack itemstack = null; Slot slot = (Slot) this.inventorySlots.get(par2); if (slot != null && slot.getHasStack()) { ItemStack itemstack1 = slot.getStack(); itemstack = itemstack1.copy(); // Either armor slot or custom item slot was clicked if (par2 < INV_START) { // try to place in player inventory / action bar if (!this.mergeItemStack(itemstack1, INV_START, HOTBAR_END + 1, true)) { return null; } slot.onSlotChange(itemstack1, itemstack); } // Item is in inventory / hotbar, try to place either in custom or armor slots else { // if item is our custom item if (itemstack1.getItem() instanceof BaseItem) { if (!this.mergeItemStack(itemstack1, 0, InventoryCustomPlayer.INV_SIZE, false)) { return null; } } // if item is armor else if (itemstack1.getItem() instanceof ItemArmor) { int type = convertEntityEquipmentSlot(((ItemArmor) itemstack1.getItem()).armorType); if (!this.mergeItemStack(itemstack1, ARMOR_START + type, ARMOR_START + type + 1, false)) { return null; } } // item in player's inventory, but not in action bar else if (par2 >= INV_START && par2 < HOTBAR_START) { // place in action bar if (!this.mergeItemStack(itemstack1, HOTBAR_START, HOTBAR_START + 1, false)) { return null; } } // item in action bar - place in player inventory else if (par2 >= HOTBAR_START && par2 < HOTBAR_END + 1) { if (!this.mergeItemStack(itemstack1, INV_START, INV_END + 1, false)) { return null; } } } if (itemstack1.stackSize == 0) { slot.putStack((ItemStack) null); } else { slot.onSlotChanged(); } if (itemstack1.stackSize == itemstack.stackSize) { return null; } slot.onPickupFromSlot(player, itemstack1); } return itemstack; } } [spoiler=Gui] public class GuiCustomPlayerInventory extends GuiContainer { /** x size of the inventory window in pixels. Defined as float, passed as int */ private float xSize_lo; /** y size of the inventory window in pixels. Defined as float, passed as int. */ private float ySize_lo; /** Normally I use '(ModInfo.MOD_ID, "textures/...")', but it can be done this way as well */ private static final ResourceLocation iconLocation = new ResourceLocation("tutorial:textures/gui/custom_inventory.png"); /** Could use IInventory type to be more generic, but this way will save an import... */ private final InventoryCustomPlayer inventory; /** The old x position of the mouse pointer */ private float oldMouseX; /** The old y position of the mouse pointer */ private float oldMouseY; public GuiCustomPlayerInventory(EntityPlayer player, InventoryPlayer inventoryPlayer, InventoryCustomPlayer inventoryCustom) { super(new ContainerCustomPlayer(player, inventoryPlayer, inventoryCustom)); this.inventory = inventoryCustom; // if you need the player for something later on, store it in a local variable here as well } /** * Draw the foreground layer for the GuiContainer (everything in front of the items) */ protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) { this.fontRendererObj.drawString(I18n.format("container.crafting", new Object[0]), 97, 8, 4210752); } /** * Draws the screen and all the components in it. */ public void drawScreen(int mouseX, int mouseY, float partialTicks) { super.drawScreen(mouseX, mouseY, partialTicks); this.oldMouseX = (float)mouseX; this.oldMouseY = (float)mouseY; } /** * Draws the background layer of this container (behind the items). */ protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) { GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F); this.mc.getTextureManager().bindTexture(INVENTORY_BACKGROUND); int i = this.guiLeft; int j = this.guiTop; this.drawTexturedModalRect(i, j, 0, 0, this.xSize, this.ySize); drawEntityOnScreen(i + 51, j + 75, 30, (float)(i + 51) - this.oldMouseX, (float)(j + 75 - 50) - this.oldMouseY, this.mc.thePlayer); } /** * Draws an entity on the screen looking toward the cursor. */ public static void drawEntityOnScreen(int posX, int posY, int scale, float mouseX, float mouseY, EntityLivingBase ent) { GlStateManager.enableColorMaterial(); GlStateManager.pushMatrix(); GlStateManager.translate((float)posX, (float)posY, 50.0F); GlStateManager.scale((float)(-scale), (float)scale, (float)scale); GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F); float f = ent.renderYawOffset; float f1 = ent.rotationYaw; float f2 = ent.rotationPitch; float f3 = ent.prevRotationYawHead; float f4 = ent.rotationYawHead; GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F); RenderHelper.enableStandardItemLighting(); GlStateManager.rotate(-135.0F, 0.0F, 1.0F, 0.0F); GlStateManager.rotate(-((float)Math.atan((double)(mouseY / 40.0F))) * 20.0F, 1.0F, 0.0F, 0.0F); ent.renderYawOffset = (float)Math.atan((double)(mouseX / 40.0F)) * 20.0F; ent.rotationYaw = (float)Math.atan((double)(mouseX / 40.0F)) * 40.0F; ent.rotationPitch = -((float)Math.atan((double)(mouseY / 40.0F))) * 20.0F; ent.rotationYawHead = ent.rotationYaw; ent.prevRotationYawHead = ent.rotationYaw; GlStateManager.translate(0.0F, 0.0F, 0.0F); RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager(); rendermanager.setPlayerViewY(180.0F); rendermanager.setRenderShadow(false); rendermanager.doRenderEntity(ent, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false); rendermanager.setRenderShadow(true); ent.renderYawOffset = f; ent.rotationYaw = f1; ent.rotationPitch = f2; ent.prevRotationYawHead = f3; ent.rotationYawHead = f4; GlStateManager.popMatrix(); RenderHelper.disableStandardItemLighting(); GlStateManager.disableRescaleNormal(); GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit); GlStateManager.disableTexture2D(); GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit); } } [spoiler=Inventory] public class InventoryCustomPlayer implements IInventory { /** The name your custom inventory will display in the GUI, possibly just "Inventory" */ private final String name = "Custom Inventory"; /** The key used to store and retrieve the inventory from NBT */ private final String tagName = "CustomInvTag"; /** Define the inventory size here for easy reference */ // This is also the place to define which slot is which if you have different types, // for example SLOT_SHIELD = 0, SLOT_AMULET = 1; public static final int INV_SIZE = 2; /** Inventory's size must be same as number of slots you add to the Container class */ private ItemStack[] inventory = new ItemStack[iNV_SIZE]; public InventoryCustomPlayer() { // don't need anything here! } @Override public int getSizeInventory() { return inventory.length; } @Override public ItemStack getStackInSlot(int slot) { return inventory[slot]; } @Override public ItemStack decrStackSize(int slot, int amount) { ItemStack stack = getStackInSlot(slot); if (stack != null) { if (stack.stackSize > amount) { stack = stack.splitStack(amount); this.markDirty(); } else { setInventorySlotContents(slot, null); } } return stack; } @Override public void setInventorySlotContents(int slot, ItemStack itemstack) { if(slot < 0 || slot >= getSizeInventory()) return; this.inventory[slot] = itemstack; if (itemstack != null && itemstack.stackSize > this.getInventoryStackLimit()) { itemstack.stackSize = this.getInventoryStackLimit(); } this.markDirty(); } /** * Our custom slots are similar to armor - only one item per slot */ @Override public int getInventoryStackLimit() { return 1; } @Override public boolean isUseableByPlayer(EntityPlayer entityplayer) { return true; } /** * This method doesn't seem to do what it claims to do, as * items can still be left-clicked and placed in the inventory * even when this returns false */ @Override public boolean isItemValidForSlot(int slot, ItemStack itemstack) { // If you have different kinds of slots, then check them here: // if (slot == SLOT_SHIELD && itemstack.getItem() instanceof ItemShield) return true; // For now, only ItemUseMana items can be stored in these slots return itemstack.getItem() instanceof BaseItem; } @Override public String getName() { // TODO Auto-generated method stub return name; } @Override public boolean hasCustomName() { // TODO Auto-generated method stub return name.length() > 0; } @Override public ITextComponent getDisplayName() { return (ITextComponent)(this.hasCustomName() ? new TextComponentString(this.getName()) : new TextComponentTranslation(this.getName(), new Object[0])); } @Override public ItemStack removeStackFromSlot(int index) { if (inventory[index] != null) { ItemStack itemstack = inventory[index]; inventory[index] = null; return itemstack; } else { return null; } } @Override public void markDirty() { for (int i = 0; i < getSizeInventory(); ++i) { if (getStackInSlot(i) != null && getStackInSlot(i).stackSize == 0) { inventory[i] = null; } } } @Override public void openInventory(EntityPlayer player) {} @Override public void closeInventory(EntityPlayer player) {} @Override public int getField(int id) { return 0; } @Override public void setField(int id, int value) {} @Override public int getFieldCount() { return 0; } @Override public void clear() { for (int i = 0; i < getSizeInventory(); ++i) { inventory[i] = null; } } } P.S. Alot of code here are placeholder until i solve my error

I remove cast to my class and got same error: [spoiler=Error] 09:42:26] [server thread/FATAL]: Error executing task java.util.concurrent.ExecutionException: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:26) [util.class:?] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) [MinecraftServer.class:?] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) [integratedServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_102] Caused by: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at fdsatrew.GuiHandler.getServerGuiElement(GuiHandler.java:17) ~[GuiHandler.class:?] at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:251) ~[NetworkRegistry.class:?] at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:87) ~[FMLNetworkHandler.class:?] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2723) ~[EntityPlayer.class:?] at fdsatrew.network.handlers.PlayerInventoryPacketHandler$1.run(PlayerInventoryPacketHandler.java:27) ~[PlayerInventoryPacketHandler$1.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:25) ~[util.class:?] ... 5 more [spoiler=Gui Handler] package fdsatrew; import fdsatrew.capability.PlayerProvider; import fdsatrew.player.gui.GuiCustomPlayerInventory; import fdsatrew.player.inventory.ContainerCustomPlayer; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.world.World; import net.minecraftforge.fml.common.network.IGuiHandler; public class GuiHandler implements IGuiHandler { @Override public Object getServerGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if (player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { if (guiId == Main.GUI_CUSTOM_INV) { return new ContainerCustomPlayer(player, player.inventory, player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null).inventory); } else { return null; } } return null; } @Override public Object getClientGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if (player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { if (guiId == Main.GUI_CUSTOM_INV) { return new GuiCustomPlayerInventory(player, player.inventory, player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null).inventory); } else { return null; } } return null; } }

Hello everyone, i'm new in minecraft modding and i write mod where i need custom player inventory. Because of this i follow next tutorial https://github.com/coolAlias/Forge_Tutorials/blob/master/CustomPlayerInventory.java(thanks alot this guy for make this tutorial) and updating it to match my minecraft version and forge version(forge-1.10.2-12.18.1.2011-mdk). Of course everything can't be easy and i got this error when i press my custom key... [spoiler=Error log] [09:03:04] [server thread/INFO]: Saving and pausing game... [09:03:04] [server thread/INFO]: Saving chunks for level 'New World'/Overworld [09:03:04] [server thread/INFO]: Saving chunks for level 'New World'/Nether [09:03:04] [server thread/INFO]: Saving chunks for level 'New World'/The End [09:03:06] [server thread/INFO] [sTDOUT]: [fdsatrew.network.handlers.PlayerInventoryPacketHandler$1:run:21]: Received gui packet with id 0 from Player297 [09:03:06] [server thread/FATAL]: Error executing task java.util.concurrent.ExecutionException: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:26) [util.class:?] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) [MinecraftServer.class:?] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) [integratedServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_102] Caused by: java.lang.ClassCastException: net.minecraftforge.common.capabilities.Capability cannot be cast to fdsatrew.capability.api.IPlayerCapability at fdsatrew.GuiHandler.getServerGuiElement(GuiHandler.java:20) ~[GuiHandler.class:?] at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:251) ~[NetworkRegistry.class:?] at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:87) ~[FMLNetworkHandler.class:?] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2723) ~[EntityPlayer.class:?] at fdsatrew.network.handlers.PlayerInventoryPacketHandler$1.run(PlayerInventoryPacketHandler.java:22) ~[PlayerInventoryPacketHandler$1.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_102] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_102] at net.minecraft.util.Util.runTask(Util.java:25) ~[util.class:?] ... 5 more Here is my code: [spoiler=Main mod init & attach capability event] @EventHandler public void preInit(FMLPreInitializationEvent event) { MinecraftForge.EVENT_BUS.register(this); proxy.preInit(event); NetworkRegistry.INSTANCE.registerGuiHandler(this, new GuiHandler()); network = NetworkRegistry.INSTANCE.newSimpleChannel("fdsatrew"); network.registerMessage(PlayerInventoryPacketHandler.class, PlayerInventoryPacket.class, 0, Side.SERVER); } @SubscribeEvent public void AttachCapability(AttachCapabilitiesEvent.Entity e) { if(!e.getEntity().hasCapability(PlayerProvider.PLAYER_CAPABILITY, null) && e.getEntity() instanceof EntityPlayer) e.addCapability(Capabilities.PLAYER_CAPABILITY_ID, new PlayerProvider()); } [spoiler=Client & Server Proxy] public class CommonProxy { public void preInit(FMLPreInitializationEvent e) { Blocks.init(); Items.init(); Capabilities.init(); } public void init(FMLInitializationEvent e) { } public void postInit(FMLPostInitializationEvent e) { } } public class ClientProxy extends CommonProxy { @Override public void preInit(FMLPreInitializationEvent e) { super.preInit(e); Render.init(); MinecraftForge.EVENT_BUS.register(new KeyHandler()); } } public class ServerProxy extends CommonProxy { } [spoiler=Key Handler] public class KeyHandler { public static KeyBinding openInventoryKey = new KeyBinding("fdsatrew.key.inventory", Keyboard.KEY_H, "key.categories.fdsatrew"); public KeyHandler() { ClientRegistry.registerKeyBinding(openInventoryKey); } @SubscribeEvent public void onKey(KeyInputEvent evt) { if (openInventoryKey.isPressed()) { Main.network.sendToServer(new PlayerInventoryPacket(Main.GUI_CUSTOM_INV)); } } } [spoiler=Gui Handler] public class GuiHandler implements IGuiHandler { private static int guiIndex = 0; public static final int guiCustomInv = guiIndex++; @Override public Object getServerGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if(player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { IPlayerCapability playerCapability = player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null); if (guiId == guiCustomInv) { returnpackage fdsatrew; import fdsatrew.capability.PlayerProvider; import fdsatrew.capability.api.IPlayerCapability; import fdsatrew.player.gui.GuiCustomPlayerInventory; import fdsatrew.player.inventory.ContainerCustomPlayer; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.world.World; import net.minecraftforge.fml.common.network.IGuiHandler; public class GuiHandler implements IGuiHandler { @Override public Object getServerGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if (player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { IPlayerCapability playerCapability = player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null); if (guiId == Main.GUI_CUSTOM_INV) { return new ContainerCustomPlayer(player, player.inventory, playerCapability.inventory); } else { return null; } } return null; } @Override public Object getClientGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) { if (player.hasCapability(PlayerProvider.PLAYER_CAPABILITY, null)) { IPlayerCapability playerCapability = player.getCapability(PlayerProvider.PLAYER_CAPABILITY, null); if (guiId == Main.GUI_CUSTOM_INV) { return new GuiCustomPlayerInventory(player, player.inventory, playerCapability.inventory); } else { return null; } } return null; } } [spoiler=Capability register?] public class Capabilities { public static ResourceLocation PLAYER_CAPABILITY_ID = new ResourceLocation(Main.MODID, "IPlayerCapability"); public static void init() { CapabilityManager.INSTANCE.register(IPlayerCapability.class, PlayerCapability.PlayerStorage.playerStorage, PlayerCapability.class); } } [spoiler=Capability code itself] public class PlayerCapability implements IPlayerCapability { public static class PlayerStorage implements IStorage<IPlayerCapability> { public static final PlayerStorage playerStorage = new PlayerStorage(); @Override public NBTBase writeNBT(Capability<IPlayerCapability> capability, IPlayerCapability instance, EnumFacing side) { NBTTagCompound nbt = new NBTTagCompound(); NBTTagList list = new NBTTagList(); for (int i = 0; i < inventory.getSizeInventory(); ++i) { if (inventory.getStackInSlot(i) != null) { NBTTagCompound stackTag = new NBTTagCompound(); stackTag.setByte("Slot", (byte) i); inventory.getStackInSlot(i).writeToNBT(stackTag); list.appendTag(stackTag); } } nbt.setTag("Items", list); return nbt; } @Override public void readNBT(Capability<IPlayerCapability> capability, IPlayerCapability instance, EnumFacing side, NBTBase nbt) { NBTTagCompound compound = (NBTTagCompound)nbt; NBTTagList list = compound.getTagList("Items", 10); for (int i = 0; i < list.tagCount(); ++i) { NBTTagCompound stackTag = list.getCompoundTagAt(i); int slot = stackTag.getByte("Slot") & 255; inventory.setInventorySlotContents(slot, ItemStack.loadItemStackFromNBT(stackTag)); } } } } public class PlayerProvider implements ICapabilityProvider, INBTSerializable { @CapabilityInject(IPlayerCapability.class) public static final Capability<IPlayerCapability> PLAYER_CAPABILITY = null; private IPlayerCapability playerCapability = PLAYER_CAPABILITY.getDefaultInstance(); @Override public NBTBase serializeNBT() { return PLAYER_CAPABILITY.getStorage().writeNBT(PLAYER_CAPABILITY, playerCapability, null); } @Override public void deserializeNBT(NBTBase nbt) { PLAYER_CAPABILITY.getStorage().readNBT(PLAYER_CAPABILITY, playerCapability, null, nbt); } @Override public boolean hasCapability(Capability<?> capability, EnumFacing facing) { return PLAYER_CAPABILITY != null && capability == PLAYER_CAPABILITY; } @Override public <T> T getCapability(Capability<T> capability, EnumFacing facing) { if (PLAYER_CAPABILITY != null && capability == PLAYER_CAPABILITY) return (T)PLAYER_CAPABILITY; return null; } } public interface IPlayerCapability { static InventoryCustomPlayer inventory = new InventoryCustomPlayer(); } [spoiler=Packet & handler] public class PlayerInventoryPacket implements IMessage { public int id; public PlayerInventoryPacket() { } public PlayerInventoryPacket(int id) { this.id = id; } @Override public void fromBytes(ByteBuf buf) { id = ByteBufUtils.readVarInt(buf, 1); } @Override public void toBytes(ByteBuf buf) { ByteBufUtils.writeVarInt(buf, id, 1); } } public class PlayerInventoryPacketHandler implements IMessageHandler<PlayerInventoryPacket, IMessage> { @Override public IMessage onMessage(final PlayerInventoryPacket message, final MessageContext ctx) { IThreadListener mainThread = (WorldServer) ctx.getServerHandler().playerEntity.worldObj; // or Minecraft.getMinecraft() on the client mainThread.addScheduledTask(new Runnable() { @Override public void run() { EntityPlayerMP player = ctx.getServerHandler().playerEntity; System.out.println(String.format("Received gui packet with id %s from %s", message.id, player.getName())); player.openGui(Main.instance, message.id, player.worldObj, (int)player.posX, (int)player.posY, (int)player.posZ); } }); return null; // no response in this case } } If you could help me with this issue, that would be nice and appreciated. P.S. I want make multiplayer mod as you can see.