03728: hypreac2: At chi disambiguation, cannot declare an inside chi.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03728	Gameplay	Major	N/A	Feb 11, 2010, 23:01	Feb 15, 2010, 12:20

Tester	nightsoil	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows Vista/7 (32-bit)
Status [?]	Confirmed			Driver	seta/ssv.cpp
Version	0.135	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03728: hypreac2: At chi disambiguation, cannot declare an inside chi.
Description	In just about any mahjong game, if you call chi when more than one chi is possible, the game will prompt you to disambiguate. In the screenshot, Clarissa has discarded a Seven Bamboo, which I called for a chi. Looking at my hand, you can see that by the rules of mahjong I can make a chi 5-6-7, 6-7-8, or 7-8-9. I tried to make the 6-7-8 chi, and the game wouldn't let me: it just made the "illegal move" buzzer sound.
Steps To Reproduce
Additional Information	This is not the only bug in the gameplay. If I remember correctly, a Seven Pairs hand I once got was scored as 1 han 25 fu (!). Unless these are emulation bugs, I would suspect that the programmer was suffering from a hangover.
Github Commit

Flags
Regression Version
Affected Sets / Systems	hypreac2

Attached Files	0000.png (34,616 bytes) Feb 11, 2010, 23:02
	0001.png (27,738 bytes) Feb 14, 2010, 11:18
	hypreac2.inp (19,625 bytes) Feb 15, 2010, 11:58
	joystick.png (34,264 bytes) Feb 15, 2010, 12:19
	joystick2.png (35,408 bytes) Feb 15, 2010, 12:20

No.05713 Fujix Administrator Feb 14, 2010, 11:20 edited on: Feb 15, 2010, 05:36	Confirmed the problem. I uploaded my screenshot. It is accepting large characters for Chi (in 0001.png, F, J and K). F is for 3-4-5, J and K are for 5-6-7. There is no option for 4-5-6.
No.05714 Haze Senior Tester Feb 14, 2010, 12:08	somebody could do with tracing the code that works this out. For most CPUs I'd write it off as 'Not a Bug' but this is V60, and it's possibly there are subtle bugs in the flag handling etc. I guess it could also be a memory mirroring issue like the one that used to affect Monster Slider on the same HW. Somebody handy with the debugger should isolate the code that's doing this and look at it, but obviously being a mahjong game the number of people likely to understand it is limited.
No.05715 nightsoil Tester Feb 15, 2010, 05:01	Useful reference on mahjong rules with emphasis on MAME games: http://www.mahjonginmame.com In my opinion, this should be required reading for anyone doing serious work on mahjong games.
No.05717 Haze Senior Tester Feb 15, 2010, 11:49	I'm not going to learn how to play Mahjong games to look at the bugs, sorry. Find some devs who understand them to look.
No.05719 Fujix Administrator Feb 15, 2010, 12:18 edited on: Feb 15, 2010, 13:26	Uploaded an inp file. At the end of the inp recording, the game offers CHI (borrowing an opponent's discarded tile) options only G key and M key. By G key, it will be 5-6-7 and 7-8-9 for M key. But in general, we should make a combination "6-7-8". BTW, when I changed the input mode to "Joystick" in the DIP menu, I can choose the first tile to contain (tiles with high-lite small characters), the tile becomes blue and the options are narrowed down. And in the "Keyboard" mode, I found the tile becomes blue for one frame after selecting the first tile, then rejected immediately.