speficic python wasm info

wiki/python-wasm/README.md

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+# CPython WASM specifics
+
+These code snippets are useful when running your game in a browser with Emscripten.
+
+## Check if game is running in the browser
+
+```py
+if sys.platform == "emscripten":
+    pass
+```
+
+## Detect WebAssembly CPU
+
+```py
+if 'wasm' in __import__('platform').machine():
+    pass
+```
+
+## Main loop example (must be asynchronous) 
+
+```py
+import asyncio
+import pygame
+
+pygame.init()
+
+
+def menu(events):
+    # draw
+    # check events
+    # change state
+    pass
+
+
+def play(events):
+    # draw
+    # check events
+    # change state
+    pass
+
+game_state = menu
+
+async def main():
+    global game_state
+
+    # You can initialise pygame here as well
+
+    while game_state:
+        game_state(pygame.event.get())
+        pygame.display.update()
+        await asyncio.sleep(0)
+
+    # Closing the game (not strictly required)
+    pygame.quit()
+    sys.exit()
+
+if __name__ == "__main__":
+    asyncio.run(main())
+```
+
+Everything else is probably specific to Pygbag. You can find more information/code [here](https://pygame-web.github.io/wiki/pygbag-code/#pygbag-code-specificssamples).
+
+
+[Contribute to this page](https://github.com/pygame-web/pygame-web.github.io/edit/main/wiki/python-wasm/README.md)