Is it possible to make wifi/hotspot multiplayer game?
On dvice turn on hotspot, and other turn on wifi and connect to hotspot and exchange data directly, without internet connection
It should be possible, but you'll still need to host a websocket server on the local network. Probably via node.js or python. You don't need a hotspot, just both devices on the same network.
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Thank you wacky toaster.
Is there any example file about it?
Not that I'm aware of. I've also never done it myself.
You can probably try and take a look at the official one, though that will cost you 20 bucks. I guess there's a how to set up included.
construct.net/en/game-assets/tools/multiplayer-signalling-server-2