06823: polepos (example): Analog devices values are not saved when using a digital input.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06823	DIP/Input	Minor	Always	Jan 3, 2018, 17:53	Feb 22, 2018, 14:57

Tester	StHiryu	View Status	Public	Platform	MAME (Unofficial Binary)
Assigned To		Resolution	Open	OS	Windows Vista/7/8 (64-bit)
Status [?]	Confirmed			Driver
Version	0.193	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06823: polepos ( example): Analog devices values are not saved when using a digital input.
Description	Not sure it's a bug but it's interesting: Playing several racing games whose use analog controls for steering and increasing/decreasing speed, I've noticed when you load a state saved, it's likely the analog input is not saved.
Steps To Reproduce	Example using polepos rom (but it happens in another games like outrun, hangon, shangon or toutrun): 1-Play one race lap (after qualification lap) and reach maximun speed of 313KM when completing first lap. 2-Pause the game with P, and save state with Mays+F7 using the key assigned to the acceleration pedal holding it all the time, continue playing. 3-Load the state with the key and keep pressing it. You'll notice the car speed is under 313KM (About 298KM).
Additional Information	This doesn't occur with digital controls: If you do the same procedure with the outrun game at megadrive or master system roms, the speed doesn't vary when you load the state. Provided image with analog configuration and youtube video: 1-Changed P1 Pedal 1 Analog Inc to the keyboard X key. 2-Saved state in min 0:03 with X key, when Time is 47 and speed is 313km. 3-Load state at min 0:10 with X key holding it all the time, Time is 47 but speed decreases to 307km, it's like the key is temporarily off
Github Commit

Flags
Regression Version
Affected Sets / Systems	polepos (example)

Attached Files	poleposKeyConf.jpg (134,983 bytes) Jan 5, 2018, 19:32 Uploaded by StHiryu Analog Key Configuration

No.14622 Tafoid Administrator Jan 5, 2018, 18:37	I don't really see it adjusting the speed at all here in my testing of using a mouse and keyboard (I don't have actual steering wheel/pedals) so I'm not certain there may be some input lag somewhere.
No.14624 StHiryu Tester Jan 5, 2018, 19:42 edited on: Jan 6, 2018, 01:39	Updated the report with a video where you can see it clearly, and a image with the analog configuration (Finally for the video I updated the pedal 1 analog inc to the "x" key, since I can`t save a state with the Ctrl key).
No.14633 B2K24 Senior Tester Jan 8, 2018, 05:12	Does this happen with the official binary using your current exact hardware?
No.14634 StHiryu Tester Jan 8, 2018, 17:07	Yes, I've just tried with the official binary. The same problem.
No.14668 B2K24 Senior Tester Jan 15, 2018, 08:27	An interesting observation here but I don't foresee a redesign or change of the current SS system to address this particular issue.
No.14669 hap Developer Jan 15, 2018, 21:12	It's a known problem, I've observed it in Outrun and Ridge Racer before. It also affects PORT_TOGGLE, for example the gear shifter in outrun or the magnet sensors in chess computers.
No.14766 StHiryu Tester Feb 20, 2018, 23:58 edited on: Feb 22, 2018, 14:58	Update: After getting a new analog joypad I made some tests with hang-on and outrun, and those are my conclusions: -In first place I`ve mapped the accelerator pedal to the analog stick and a digital button. -The issue is not load/save state related only, it happens after pausing the gameplay too. -Accelerate with the analog stick to the max speed, hold it and push pause, wait one second and hit pause again, the speed is not decreased. -However, if you do the same with the digital button after pausing, you'll always see the meter losing speed for a while. It's likely the emulator expects a value from a range, and can't recognise the value from the digital input.