[SOLVED]FallAndSink question[zscript]

[Laskow]

Hello. I'm facing a strange phenomenon related to FallandSink. The goal is making a non-monster actor that can be damaged and float on the water.

This code works for all monster actors as well, so I thought it also works for frozen actors, then it didn't work like monsters.

It's strange that the frozen actor keeps height and floats on the water when it's far from the player, but when the player closes to the frozen actor, suddenly it starts bobbing. I have no idea why its behavior changes by the player's position from the actor.
Probably the float bob isn't the reason for this problem. If the cause is FLOATBOB or FloatBobStrength, then it must bob continually.

I've never seen overridden FallandSink code as far as I know, so any help or hint appreciated!


[EDIT] Aha... I found the bobbing speed is affected by FloatSpeed's value. Still don't know why the frozen actor bobs only when the player closes to it. Not sure though, the frozen actor starts bobbing within approximately 100 units of the center of the frozen actor.

[Laskow]

Agh, another hard-coded underwater physics... The cause is this code in p_mobj.cpp.

https://github.com/ZDoom/gzdoom/blob/ma ... .cpp#L2401

[Nash]

That's some very oddly-specific hardcoded behavior. I wonder why was that added...

[Professor Hastig]

That fragment is the original implementation for the MF_FLOAT flag, but it looks like it never got any handling added for dealing with the case where a dead item is suspended in mid-air/water and no gravity being applied.