For example I want remove item from 5th slot of toolbar. How I can do this?

4 minutes ago, diesieben07 said:

InventoryPlayer is the player inventory, you can access it via EntityPlayer::inventory. Then just call setInventorySlotContents to change the contents of a slot.

Could you write me example of this code? I'm new to modding

4 minutes ago, diesieben07 said:

If you need an example of how to access a field and how to call a method you are not "new to modding", you are new to Java, in which case you need to go and learn Java before making a mod.

I was not sure that I would succeed and therefore asked for help. But this code works !

((EntityPlayer) entity).inventory.setInventorySlotContents(5, null);

Thank you!

Which version of Minecraft are you using?

 

In 1.11+, ItemStacks can no longer be null; the default value is now the empty ItemStack (ItemStack#isEmpty). The ItemStack.EMPTY field contains an ItemStack that's always empty.

Just now, Choonster said:

Which version of Minecraft are you using?

 

In 1.11+, ItemStacks can no longer be null; the default value is now the empty ItemStack (ItemStack#isEmpty). The ItemStack.EMPTY field contains an ItemStack that's always empty.

1.7.10