is there any way to detect that I am holding an item or blockitem? and if I stop holding it?

 

How get held item:

Item heldItem = Minecraft.getInstance().player.getHeldItemMainhand().getItem();

 

Edited September 26, 20195 yr by Brbcode

Everything you hold is an ItemStack of some Item. If you want to know if it is a BlockItem you have to instanceof the stack's item.

 

I don't know that there is an event for when the player changes their held item, however. 

20 minutes ago, Draco18s said:

ItemStack

Honestly, I am not sure how to handle the item stack, can I create my custom item stack and register it?,

I have found a method called "interactWithEntity(PlayerEntity playerIn, LivingEntity entityIn, Hand hand)" so it seem that is the correct way to archive my goal.

 

Entities can be another way I think...

 

41 minutes ago, Brbcode said:

Honestly, I am not sure how to handle the item stack,

...what?

 

41 minutes ago, Brbcode said:

can I create my custom item stack and register it?,

No. ItemStack is a sealed class.

 

41 minutes ago, Brbcode said:

I have found a method called "interactWithEntity(PlayerEntity playerIn, LivingEntity entityIn, Hand hand)" so it seem that is the correct way to archive my goal.

I don't see how this is even remotely close to what you asked for.

13 minutes ago, diesieben07 said:

What exactly are you trying to achieve (from the perspective of someone using your mod, not how you want to program it)?

My custom mod is like a barrier that only works with fluids letting the player go through it. To build water elevators more easy.

So I want change the render of my block to invisible or visible in function if player holds in his hand the item or not.

22 hours ago, diesieben07 said:

Your block will need a tile entity and a TileEntityRenderer (use TileEntityRendererFast if at all possible). Then in there you check if Minecraft#renderViewEntity is holding your item.

 I still have to finish how to show the texture, I don't know how yet but you have given me a good hint, Thank you.