How do I make a swimmable part without using terrain water?

[Aorda]

This problem was mentioned three years ago. A very easy solution is using the ZonePlus module. You can construct a new zone for each swimabble part and trigger the swimming state once the localPlayerEntered event fires.

How to create terrain water behavior, without terrain water

The code I wrote is very basic. The part is considered “sea level”, which means the player will be able to swim anywhere under the part’s Y coordinate. The whole purpose of the script is to create an infinite sea, something that terrain didn’t allow and came nowhere near in performance. However, for your purpose, the script can be modified by using the ZonePlus module. What you would do is remove the parts that use the “water part” and make use of the “localPlayerEntered” event of ZonePlus.

P.S. It might be a good idea to ditch the BodyVelocity construction in favour of LinearVelocity as it has been quite some time since it has been deprecated.