[WIP] Improved Ship Physics

[SilentPrey]

Well, the stock scene.dat file from SH3 has smaller waves than what I usually use. The main point of interest is that in SH3 a sub will pitch and roll as you submerge, even to periscope depth or deeper. I took a type VIIb down to 25 or 30 m and there was still a little movement. I couldn't go deeper as the water was shallow. With the same scene.dat file in SH4 (using a S-18) the boat ceases to pitch or roll, very soon after you dive. It seems to stop between 26 and 30 ft., and after that, it is like being on rails. This is true, even when the waves are very large, and the shears/tower are periodically exposed - very unrealistic.

It sounds like Ubi didn't convert from metric to imperial and just used 25-30 for both when setting max depth for wave effect. In meters it's right, in feet it's far too shallow.