Any way to override a block automatically set by the world?

[FredTargaryen]

It sounds pretty destructive, and from what I've seen and read it's not possible, but can anyone confirm whether you can do this?

 

Specific case: When a water block is set to ice I would like to occasionally set it to my custom ice block instead.

 

Thanks for reading.

[Ernio]

It really depends - "when water block is set to ice" - by who? You can easily track player placements, but direct world-modifying is pain in the ass.

 

So if you are asking "Can I track any block-change occuring in world?" the answer would be "no" or "not without causing performance issues".

[Draco18s]

The only way I can think of doing this without performance impact would be ASM and inject your own event into the water block class.

 

Note: ASM is not a standard protocol and you will receive no help here for writing it.

[FredTargaryen]

Yes I was thinking of when the world sets water to ice automatically.

I was worried someone would mention ASM; don't think I'm experienced enough to safely use that. Thank you both!