How do I set blocks

how do I set block without using $level->setBlock bc that lags

 

Force a player to break the block. There is no other way. Level::sendBlocks() would help.

 

I
There is muqsit used a faster way

 

Async tasks?

 

If you're talking about the method used in WorldStyler... it still comes at a cost. It isn't that efficient for micro block updates. You could use:

• Level->setBlock(Vector3, Block, false, false) — skips light updates and neighbouring block updates
• Level->setBlockIdAt() + Level->setBlockDataAt() — updates block data in chunk and updates level cache. this is what explosions use too. but note that that's not a free-of-cost block setter, it ignores various block and light updates and directly modifies the block data in the chunk. also don't forget to floor the coordinates before passing it as the parameters.