Analyze PIN2DMD dump files (such as can be generated from https://playfield.dev) and extract game information from them.
Motivation for the project is to one day analyze a live stream from a game to automatically capture statistics, in the spirit of https://github.com/ferocia/kartalytics.
A test dump file from Demolition Man is provided in data to experiment with.
There is rails app in dmd-analyzer that can receive events and store in a
database.
Proof of concept code for Demolition Man can analyze a variety of events and track scores for any number of players.
Only works on an emulator dump though, I can't get a reliable feed of the real DMD to process :(
In theory, PIN2DMD has a debug interface over microUSB that can deliver frames. In practice, while I can get some frames out of it, I can't get it to stream reliably: it would give "broken" frames, and would persistently crash after a few seconds of operation. Details in this issue..
Possible next steps:
- Investigate the firmware of PIN2DMD? (Need to pay the authors for this.)
- Find another way to tap the DMD?
- Try using a different language to eliminate possibility of issue with Ruby's libusb wrapper?
These are pretty far out of my comfort zone and I haven't pursued them yet.
These can be created at https://playfield.dev by clicking the DMD DUMP button
in the top right of the UI.
> bin/inspect-dump data/test-dump-1.raw.gz | head -n 20
I, [2022-07-31T13:20:08.073870 #29891] INFO -- : Loading data/test-dump-1.raw.gz
I, [2022-07-31T13:20:08.578854 #29891] INFO -- : Loaded data/test-dump-1.raw.gz
I, [2022-07-31T13:20:08.578941 #29891] INFO -- : Frames: 437
I, [2022-07-31T13:20:08.613364 #29891] INFO -- : Frame 0, timestamp 2294275:
▄▄
▗▟████▙ ▟ ▗▄ ▄▖
▗█▛▀ ▜█▌ ▟▛ ▗█▛ ▟█▘
▗█▛ ▐▖ ▐█▙ ▟█▌ ▄ ▄ ██▘ ▐█▛ ▄
█▛ ▟▌ ▟██ ▗██ ▟▛▐█▌ ▐█▛ ██▘ ▐█▌
▐█ █▌ ██▌▗██▌ ▟▛ ▝█▘ ▗██▘ ▟█▛ ▝█▘
▗ █▌ ▐█▘▐██▚███▘▟▛ ▟█▛ ▗██▘
▗█▘ █ ▗██ ███████▟█▘ ▐██ ██▌
█▌ █▖▗██▘▐████████▘▗▟█▌ ▗██▌ ▟██ ▄██ ▗▟██▄██ ▗▟█▖ ▟█▖ ▄█▙ ▟
█▌ ▝██▛▘ ███▛▐███▛▗███▘ ▟██ ▗██▌ ▟██▛ ▗██▘▐██▌▗███▙████▟███▌ ▟█
▐█ ▟██▛ ████ ▟██▛ ▟██▌▗██▛ ▐███ ▗██▛ ▐██ █▛▟██▛▐███▚██▘▟█▘
▟█▖ ▗██▛ ███▌▐███ ▟███▗███▘▗███▌▗███ ██▌▟█▐███ ███▘██▛▗█▘
███▌ ▗██▛ ███ ██▌▟███▙███▛▗████▗███▌ ▟██▗█▘███▘▐██▘▐██▘▟█▙▗
██▛ ▗██▘ ██▌ ████▘███▛▝███▛▐███▘██ ▟██▙█▘▐██▘ ██▛ ▐██▟▛▜▛▟
█▛ ▗█▀ ▝█ ▝█▛▘ ▝█▛ ▜█▛ ▜▛▘ ▝██▘▝█▛▘ ██▛ ▐█▛ ▜█▀ ▝██
A mask can be created to identify frames of a particular type, for further analysis later.
> bin/create-mask \
-i data/test-dump-1.raw.gz \
-o masks/dm/ball.json \
--frame 399 \
--mask 28,27,18,5 \
-v
I, [2022-07-31T13:21:11.747669 #29954] INFO -- : Loading data/test-dump-1.raw.gz
I, [2022-07-31T13:21:12.247765 #29954] INFO -- : Loaded data/test-dump-1.raw.gz
I, [2022-07-31T13:21:12.276365 #29954] INFO -- : Extracted frame 399:
▗████ ▄██ ▟████▖ ▟████▖ ▄██ ▟████▖
█████ ███ █████▌ █████▌ ███ █████▌
██▘ ██ ██ ▐█▌ ██ ▐█▌ ██ ██ ▐█▌
██▄▄▖ ██ ██ ▐█▌ ██ ▐█▌ ██ ██ ▐█▌
█████▖ ██ ██ ▐█▌ ██ ▐█▌ ██ ██ ▐█▌
██▀▜█▌ ██ ██ ▐█▌ ██ ▐█▌ ██ ██ ▐█▌
██ ▐█▌ ██ ██ ▐█▌ ██ ▐█▌ ██ ██ ▐█▌
██▄▟█▌▗▄██▄▖██▄▟█▌ ██▄▟█▌▗▄██▄▖██▄▟█▌
▜████▘▐████▌█████▌▖█████▌▐████▌█████▌
▀▀▀▘ ▝▀▀▀▀▘▝▀▀▀▀▗▘▝▀▀▀▀ ▝▀▀▀▀▘▝▀▀▀▀
▄▖ ▄ ▖ ▖ ▗ ▄▄▗▄ ▄▄▗▄▖ ▗▄ ▖ ▗▖▗ ▗
▙▞▐▄▌▌ ▌ ▜ ▙▖▐▄▘▙▖▐▄ ▐▄▘▌ ▙▟ ▚▘
▙▞▐ ▌▙▖▙▖ ▟▖ ▌ ▐ ▌▙▄▐▄▖ ▐ ▙▖▌▐ ▐ ▗
I, [2022-07-31T13:21:12.307175 #29954] INFO -- : Mask [28, 27, 18, 5]:
▄▄▄▄▄▄▄▄▄
█████████
█████████
I, [2022-07-31T13:21:12.337726 #29954] INFO -- : Masked image:
▄▖ ▄ ▖ ▖
▙▞▐▄▌▌ ▌
▙▞▐ ▌▙▖▙▖
> bin/inspect-mask masks/dm/ball.json
I, [2022-07-31T15:48:17.456906 #40472] INFO -- : Mask:
▄▄▄▄▄▄▄▄▄
█████████
█████████
I, [2022-07-31T15:48:17.484671 #40472] INFO -- : Image:
▄▖ ▄ ▖ ▖
▙▞▐▄▌▌ ▌
▙▞▐ ▌▙▖▙▖
Need to repeat this for all digits, finding appropriate frames.
> bin/extract-dm-digit-templates \
-i data/dm-all-digits.raw.gz \
-o masks/dm \
--frame 70 \
--score 1,300,000 \
-v
> bin/extract-dm-scores data/dm-all-digits.raw.gz
INFO [2022-08-06 13:34:14.990]: Loading data/dm-1p-3ball.raw.gz
INFO [2022-08-06 13:34:16.741]: Loaded data/dm-1p-3ball.raw.gz
INFO [2022-08-06 13:34:16.741]: Frames: 1481
INFO [2022-08-06 13:34:16.748] (9): {:type=>:game_start, :t=>4578304}
INFO [2022-08-06 13:34:16.872] (49): {:type=>:update_score, :score=>3330, :t=>5182720}
INFO [2022-08-06 13:34:17.133] (110): {:type=>:update_score, :score=>253330, :t=>5920000}
INFO [2022-08-06 13:34:17.337] (162): {:type=>:ball_save, :t=>6503936}
INFO [2022-08-06 13:34:17.471] (235): {:type=>:update_score, :score=>503330, :t=>7297536}
INFO [2022-08-06 13:34:17.769] (347): {:type=>:drain, :t=>8629248}
INFO [2022-08-06 13:34:17.775] (350): {:type=>:update_score, :score=>1503330, :t=>9166848}
INFO [2022-08-06 13:34:18.029] (400): {:type=>:update_score, :score=>1506660, :t=>9894144}
INFO [2022-08-06 13:34:18.232] (493): {:type=>:update_score, :score=>1756660, :t=>10728704}
INFO [2022-08-06 13:34:18.304] (560): {:type=>:update_score, :score=>2006660, :t=>11261440}
INFO [2022-08-06 13:34:18.467] (592): {:type=>:update_score, :score=>2256660, :t=>11712000}
INFO [2022-08-06 13:34:18.667] (680): {:type=>:drain, :t=>12741376}
INFO [2022-08-06 13:34:18.674] (737): {:type=>:update_score, :score=>3256660, :t=>13652992}
INFO [2022-08-06 13:34:18.715] (747): {:type=>:update_score, :score=>4256660, :t=>13821952}
INFO [2022-08-06 13:34:18.725] (795): {:type=>:update_score, :score=>6256660, :t=>14544128}
INFO [2022-08-06 13:34:18.734] (797): {:type=>:update_score, :score=>6506660, :t=>14574848}
INFO [2022-08-06 13:34:18.967] (850): {:type=>:ball_save, :t=>15148288}
INFO [2022-08-06 13:34:19.110] (931): {:type=>:update_score, :score=>6756660, :t=>15942144}
INFO [2022-08-06 13:34:19.449] (1042): {:type=>:drain, :t=>17242880}
INFO [2022-08-06 13:34:19.456] (1056): {:type=>:update_score, :score=>7756660, :t=>17790720}
INFO [2022-08-06 13:34:19.469] (1417): {:type=>:game_end, :t=>4575163540708794880}
INFO [2022-08-06 13:34:19.471] (1480): Average frame processing time: 1ms
We have the initial stirrings of a test suite.
rspec
Assorted pro-tips for playing using the switches on https://playfield.dev
Ball Launchdoesn't appear to do anything, just start scoring points with playfield switches to "launch".Top Popperis the back sink that starts multiball.- To drain, close
Trough 5 (left), toggleEject, openTrough 5 (left). (Optos --- such as the trough --- are "open" when they are blocked.)