I asked which part of the ruleset that I need to add a hitanimation:somthing, so I can correct the problem with underwater explosion appearing on land, when the land terrain tile exploded. Due to weapon damage. That was my original question asked.
Unless this line hitanimation: something is added, the incorrect explosion is shown on land. This is a problem I have tested in my mod. Once this line is added, to any explosion type weapon on my item.rul, the switch worked correctly.
So I was asking where in the ruleset I can find some reference to terrain tiles explosion.
The solution you offered, I am already fully aware of it. It is not related to my question asked.
Thank you for helping, I do appreciate the input. However, I do prefer if one of the developer to answer this, so to avoid too many unnecessary posting just to answer this question.