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python and pygame wasm for everyone ( packager + test server + simulator )

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pygame-web/pygbag

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Python WebAssembly for everyone ( packager + test server )

Intro :https://github.com/pygame-web

Community Documentation :https://pygame-web.github.io

Runs python code directly in modern web browsers, including mobile versions.

Quick Start:

"your.app.folder" must contain a main.py and its loop must be async aware eg:

importasyncio# Try to declare all your globals at once to facilitate compilation later.COUNT_DOWN=3# Do init here# Load any assets right now to avoid lag at runtime or network errors.asyncdefmain():globalCOUNT_DOWN# avoid this kind declaration, prefer the way aboveCOUNT_DOWN=3whileTrue:# Do your rendering here, note that it's NOT an infinite loop,# and it is fired only when VSYNC occurs# Usually 1/60 or more times per seconds on desktop# could be less on some mobile devicesprint(f"""            Hello[{COUNT_DOWN}] from Python""")# pygame.display.update() should go right next lineawaitasyncio.sleep(0)# Very important, and keep it 0ifnotCOUNT_DOWN:returnCOUNT_DOWN=COUNT_DOWN-1# This is the program entry point:asyncio.run(main())# Do not add anything from here, especially sys.exit/pygame.quit# asyncio.run is non-blocking on pygame-wasm and code would be executed# right before program start main()

Usage:

pip3 install pygbag --user --upgradepygbag your.app.folder

Command help:

pygbag --help your.app.folder

Example :

user@pp /data/git/pygbag $ py -m pygbag --help test/main.py *pygbag 0.8.2*115: cache 0.7.2 mismatch, want 0.8.2, cleaning ...Serving python files from [/data/git/pygbag/test/build/web]with no security/performance in mind, i'm just a test tool : don't rely on meusage: __main__.py [-h] [--bind ADDRESS] [--PYBUILD PYBUILD] [--app_name APP_NAME] [--ume_block UME_BLOCK] [--can_close CAN_CLOSE] [--cache CACHE] [--package PACKAGE] [--title TITLE] [--version VERSION] [--build] [--html] [--no_opt] [--archive] [--icon ICON] [--cdn CDN] [--template TEMPLATE] [--ssl SSL]                   [--port [PORT]] [--disable-sound-format-error]options:  -h, --help            show this help message and exit  --bind ADDRESS        Specify alternate bind address [default: localhost]  --PYBUILD PYBUILD     Specify python version [default:3.11]  --app_name APP_NAME   Specify user facing name of application [default:test]  --ume_block UME_BLOCK                        Specify wait for user media engagement before running [default:1]  --can_close CAN_CLOSE                        Specify if window will ask confirmation for closing [default:0]  --cache CACHE         md5 based url cache directory  --package PACKAGE     package name, better make it unique  --title TITLE         App nice looking name  --version VERSION     override prebuilt version path [default:0.8.2]  --build               build only, do not run test server  --html                build as html with embedded assets (pygame-script)  --no_opt              turn off assets optimizer  --archive             make build/web.zip archive for itch.io  --icon ICON           icon png file 32x32 min should be favicon.png  --cdn CDN             web site to cache locally [default:https://pygame-web.github.io/archives/0.8/]  --template TEMPLATE   index.html template [default:default.tmpl]  --ssl SSL             enable ssl with server.pem and key.pem  --port [PORT]         Specify alternate port [default: 8000]  --disable-sound-format-error   audio files with a common unsupported format found in the assets won't raise an exception

unlisted developper options:

--git               force cdn use of pygbag current git github CI build--dev               change port to 8666 and use local build served on 8000

Now navigate tohttp://localhost:8000 with a modern internet browser.

Usehttp://localhost:8000?-i for getting a terminal with repland a sized down canvas (http://localhost:8000#debug also does the same )

For pygame-script go tohttp://localhost:8000/test.html( for a game folder named "test" with option --html )

V8 based browsers are preferred ( chromium/brave/chrome ... )starting with 81.0.4044 ( android 4.4 ).Because they set baseline restrictions on WebAssembly loading.Using them while testing ensure proper operation on all browsers


NOTES:

  • pygbag only provides support for pygame-ce ( pygame community edition )

  • safari/chrome mobile will not run until version ios 15.x. Regarding iOS: This project is tested with BrowserStack when possible.

  • first load will be slower, because setting up local cache from cdn to avoiduseless network transfer for getting pygame and cpython prebuilts.

  • each time there's a major change in the code/assets/templateyou must runpygbag your.app.folder butcache will not be destroyed to save bandwidth.

  • if you want to reset prebuilts cache, remove the build/web-cache folder inyour.app.folder

  • pyodide wheels (non-standard wasm) aren't compatible ootb with pygbag runtime

HISTORY:

  • pygbag's concepts took roots in a 2016 Panda3D community experiment.

BUILDING:

Pygbag is not only a python module and its python runtimes are stored online !Rebuilding all the toolchain can be quite hard.

https://github.com/pygame-web/python-wasm-sdk <= build CPython (not pyodide)

The default is to build only pygame, but feel free to fork and add yours.

So read/use pygbag CI to see how to build pygame + the C loader (pymain) andhow it is linked it to libpython.For modules loading since 0.6 the default is to use wasm dynamic libraries.wasm wheels info here

https://github.com/pygame-web/pygbag

Default prebuilts CPython + pygame-ce used by pygbag are stored via github pagesfrom the repohttps://github.com/pygame-web/archives under versioned folders.

TEST INTERACTIVE REPL 3.11 (default)

TEST INTERACTIVE REPL 3.12 (next)

ADDING STATIC/DYNAMIC MODULES:

see in package.d directory and use vendor/vendor.sh

SUPPORT FOR STATIC/DYNAMIC MODULES:

see in package.d/<vendor>/README.md for module <vendor> specific support

vendor readme (if applicable)

GENERIC PYGBAG SUPPORT OR PYGAME MODULE:

for generic help around pygbag

GENERIC CPYTHON WASM:

python.org forum

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