Let's suppose I have two stone blocks in the player's inventory. How can I now craft stone pressure plate without a human interaction?

Lets suppose you have two stone blocks, two plank blocks, a stick, and some coal.

What should get crafted?

I need to craft exactly the stone pressure plate and nothing else.

It should get crafted on some event. If that matters, I need it to get crafted on PlayerTickEvent when some conditions are satisfied. And the output should go to the player's inventory, preferably some empty slot in the hotbar.

So the class EntityPlayer has the field inventoryContainer. That's what you're telling me about, right?

I've tried to do some manipulations with slots, however it seems that the server doesn't allow me to do that in such a way or doesn't know what I've done there.

//Take 2 items from the first slot in the hotbar. Just imagine you have 2 stone blocks in your first hotbar slot
ItemStack s1 = player.inventoryContainer.getSlotFromInventory(player.inventory, 0).decrStackSize(1);
ItemStack s2 = player.inventoryContainer.getSlotFromInventory(player.inventory, 0).decrStackSize(1);
//                                                                                       |1|2|
//Now put obtained ItemStacks to the crafting grid. It has the following slot numbering: |3|4|. Craft result slot is number 0
player.inventoryContainer.putStackInSlot(1, s1);
player.inventoryContainer.putStackInSlot(2, s2);

//Finally put the result to the first hotbar slot
player.inventory.addItemStackToInventory(player.inventoryContainer.getSlot(0).decrStackSize(0));

 

Edited May 14, 20187 yr by ZhabaKlava

maybe try looking at ItemBow how to consume items if they're in inventory and then just give player new item ?

I achieved my goal using playerController.windowClick. Thanks