Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07801 Gameplay Major Always Nov 24, 2020, 20:58 Jul 14, 2021, 19:44
Tester GeekyFerret View Status Public Platform MAME (Official Binary)
Assigned To Ryan Holtz Resolution Fixed OS Windows 10 (64-bit)
Status [?] Resolved Driver
Version 0.226 Fixed in Version 0.234 Build 64-bit
Fixed in Git Commit 67a24b1 Github Pull Request #
Summary 07801: motoraid, motoraiddx: Track collision issues
Description In all of the tracks, the collision detection is broken in certain parts of the track. This causes you to fall through the ground or get flung into the air. This can be seen in the first track if you stay next to the right wall the entire time. The issue is more severe in the later tracks to the point where the game is almost unplayable.
Steps To Reproduce
Additional Information
Github Commit
Regression Version
Affected Sets / Systems motoraid, motoraiddx
Attached Files
related to 07264Closed  motoraid, motoraiddx: Calculation/Camera issues 
User avatar
Nov 29, 2020, 03:39
edited on: Nov 30, 2020, 20:54
I have posted this before under 07264 over a year ago but got closed because I couldn't properly trace the regression and gave up. The problem with Motor Raid is the game is currently marked as working AND the issue didn't happen in 0.196 (hence why the game was initially marked as working). My initial guess was the regression was somewhere in between 0.197 or 0.198 where some changes to the TGP core were made to remove Virtua Racing's simulation with emulation of the internal rom.

P.S. If you are wondering why I mentioned Virtua Racing, then it's because Model 1 and Model 2/2A use the TGP for 3d related physics/calculations/collision detection.
User avatar
Dec 1, 2020, 17:55
We may end up re-flagging this as not working so people are not disappointed.
User avatar
Dec 3, 2020, 02:15
edited on: Dec 3, 2020, 02:49
Regression version confirmed to be 0.197. My initial predictions may have been correct as this was the version with the MB86233/4 rewrite. Rather a bit sad to see Motor Raid only working good in Mame for one version but the rewrite was most likely for the better.
User avatar
Senior Tester
Dec 3, 2020, 18:31
yes, we already knew it was the TGP rewrite
User avatar
Senior Tester
Jul 14, 2021, 18:55
This is fixed for the upcoming mame 0.234