Writing and Debugging a Web-Based Multi-Player Game
summary
Built a web game server in Go that runs a 60 Hz simulation on a headless process, uses WebSockets/WebGL clients, and separates simulation, player management, and network I/O into per-player goroutines communicating over buffered channels. Tools include the Go profiler, json.Marshaler implementations for compact output, and gob binary encoding as an alternative; payloads shrink (example point JSON from ~47 to ~39 bytes), bandwidth roughly halves, and games scale to roughly 16–64 players per instance.
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chapters (12)
- 0:00Console to web robot game
- 2:43Concurrency in games
- 3:25Simple robot battle design
- 6:15Game server in Go
- 8:00Simulation vs serialization
- 10:49Player serialization challenges
- 11:57Optimizing spectator payload
- 14:26Bandwidth with float32 and interfaces
- 17:15Go interfaces for encoding
- 20:03Binary encoding with gob
- 21:50Web robot battle demo
- 27:10Q&A on performance
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