cubes-opengl

Simple OpenGL demo with multiplayer feature. Player controls single cube with mechanics inspired by "Katamari Damacy".

Details:

• Internally demo consist of client and server
• Both communicate over UDP using Snapshots Interpolation model*
• Server dumps simulation state 10 times per second (10pps)
• State is bound and quantizied before sending
• Client renders recived data and sends user input to server (smilar to Quake 2 model)

Build

Works on Windows and Linux :)

git clone https://github.com/dzeromsk/cubes-openg.git
mkdir cubes-openg/build
cd cubes-openg/build
cmake -GNinja ..
ninja

Examples

Start screen

You can connect to existing server or start new one.

Player view

Player controls large cube using WSAD.

Multiplayer

Player count is limited only by server troughput.

Debug view

Press F12 to open second udp connection and recive raw data (no interpolation and quantization) from server.

References

• http://gafferongames.com/networked-physics/the-physics-simulation/
• http://gafferongames.com/networked-physics/snapshots-and-interpolation/
• http://number-none.com/product/Packing%20Integers/
• http://number-none.com/product/Scalar%20Quantization/
• http://number-none.com/product/Transmitting%20Vectors/
• http://number-none.com/product/Adaptive%20Compression%20Across%20Unreliable%20Networks/
• http://number-none.com/product/Piecewise%20Linear%20Data%20Models/
• http://fabiensanglard.net/quake2/
• http://fabiensanglard.net/quakeSource/