Zipree

On server side, how to reduce players item from inventory? I used below codes. It doesn't work. Nothing changed. @Override public IMessage onMessage(CostMessage message, MessageContext ctx) { EntityPlayerMP player = ctx.getServerHandler().player; if (message != null) { ItemStack stack = message.getItemStack(); if (stack == null) return null; InventoryPlayer inv = player.inventory; inv.deleteStack(stack); } return null; } It caused NoSuchMethodException with func_184429_b @Override public IMessage onMessage(CostMessage message, MessageContext ctx) { EntityPlayerMP player = ctx.getServerHandler().player; if (message != null) { ItemStack stack = message.getItemStack(); if (stack == null) return null; InventoryPlayer inv = player.inventory; int amount = stack.getCount(); int p = 0, cnt = stack.getCount(); while (cnt > 0) { int slot = inv.getSlotFor(stack); int cntFrom = inv.getStackInSlot(slot).getCount(); cnt -= cntFrom; if (cnt > 0) { inv.setInventorySlotContents(slot, null); } else if (cnt != 0) { stack.setCount(-cnt); inv.setInventorySlotContents(slot, stack); } } } return null; } Is there any method or way to reduce items from player's inventory by item name & count?

then, how to send a packet to server from guiscreen? is there any network object for guiscreen or from forge? or should i make custom network IO connection?

I have a class which extends GuiScreen I want to change player's inventory in it and sync with server I used below code if(ItemStack.areItemsEqual(iStack, new ItemStack(ModItems.whiteCoin))){ player.inventory.mainInventory.set(slotNum, new ItemStack(ModItems.whiteCoin, itemAmount)); } but it doesn't sync with client and server both. How can i change EntityPlayerSP's inventory and sync data with server?