Flying saucers vehicles from RCT2 expansions show wrong sprite angle (original bug)

[deurklink]

Operating System

Windows 11 64 bit

OpenRCT2 build

v0.4.32

Base game

RollerCoaster Tycoon 2

Area(s) with this issue?

This bug is a graphical glitch or error, The bug also exists in the original game (RCT2/RCTC)

Describe the issue

Triceratops, Snowmobile and Cyclops dodgems show wrong angle sprite when moving. It's most apparent when you put them on a regular track using plugins, they will appear to be drifting when moving along the track.

Steps to reproduce

Use attached save file to see the vehicles moving along the track.
Flying saucer sprites.zip

(the vehicles in save file have been modified to all have the same speed so they are easier to compare)

Attachments

No response

[ZeeMaji]

I did recall finding this a long time ago, and that it was deemed as something to not fix as some parks (particularly dkmp parks) have used these for decorations before and would break if the rotation error was fixed. This also affects a few other WWTT objects, not sure which ones exactly as I haven't looked but I know it also affects the hippo & killer whale submarines at minimum.

[deurklink]

While these have definitely been used as decoration, those cases (in dkmp parks at least) are very rare. And in the places where they have been used as decoration, they are often rotated a bit anyway, so I doubt anyone would notice a slight angle difference. At least in my parks, I wouldn't. In my opinion, having these vehicles be more viable for usage on a track without them look like they are drifting outweighs keeping the angle exactly the same in parks where the vehicles have been used as decoration.

[tbarford]

I agree with dk

[astraylife1]

I agree as well. Fixing errors and progress > niche old saves

[Liampie]

I don't think NE's back catalogue will be affected. Seems like a good thing to fix.

[ZeeMaji]

This should probably be moved to the objects repo, as this is an error in the objects.

I have looked into fixing the submarines, the hippo submarines were fixable fairly simply.

However, the killer whale submarines are going to be a bit tricky as they just seem to completely lack the proper orthogonal angles in their images table, I dumped the objects and none of the sprites in them correspond to any of the proper angles, nor did copying the fix for the hippos leads to much beyond fixing the diagonals. nevermind, mix found this:

Technically I think you could maybe make orthogonal sprites from the restraint animation sprites, as for some reason those are facing the right angle. It'll be a little tricky though.