Unbreakable blocks

[Pink-Panther]

Hi.

 

I'd like to make a mod where you cannot destroy any existing block but you can place blocks you already have (and destroy them).

The problem is to differentiate two block of the same type by the fact that is was (or wasn't) in the original world.

I looked at blockstate but it seems like it's a dead end (many vanilla block already have their 4 bytes state full).

So I thought about re-registering every vanilla block with .setUnbreakable() but we cannot register the same block two times. 

 

If someone have an idea, I'll be grateful.

 

Thanks for reading.

[Draco18s]

You won't be able to do this without rewriting a majority of Minecraft's internals.

[Pink-Panther]

Damn...

 

A different way would be to store chunks as array of 256 booleans and to check on event if a block is breakable or not.

Do you think this would be too costly performance-wise (with some optimizations ofc) ?

Edited February 7, 2018 by Pink-Panther
to -> too

[Draco18s]

That's pretty much your only option, yes.

[Pink-Panther]

Okay, thx

[jabelar]

I don't think it is really that costly for performance really. You only need to update the "map" when someone places a block and only check the map when someone tries to break a block. And booleans can be stored as a bit map if you need to keep things compressed (cause you probably need to store this as world save data). 

 

EDIT: of course you should keep track of breakable blocks, not unbreakable, since I would expect that the player-placed blocks would be much less than the naturally generated ones.

Edited February 7, 2018 by jabelar

[Pink-Panther]

Thx, I think I will store unbreakable blocks map on disk arranged by regions/chunks. So I'll only load the map when relatives chunks will be loaded and it wont use too much RAM.