glos

🔔 development continued in glosi

experimental 3d multiplayer game framework using simple data layer 2 and opengl es3 in c++ 23

intention

• multiplayer framework
  • synchronized client input signals
  • clients render at the rate of the slowest client
  • server synchronizes clients signals
• grid of cells that partition world space
  • update and collision detection of objects
  • multithreaded
• game where most objects are visible on screen
  • cull grid cells and objects to render within frustum (todo)
• importing blender exported obj files
• explore legacy opengl rendering
• intuitive programming of game objects and logic
• game code written in src/application/
• collision detection (that is "good enough" for games)
  • sphere vs sphere
  • sphere vs convex volume
  • convex volume vs convex volume
• collision reaction
  • sphere vs sphere
  • sphere vs convex volume (todo)
  • convex volume vs convex volume (todo)

ubuntu packages used

• libgl-dev: opengl
• libglm-dev: opengl math
• libtbb-dev: parallel unsequenced for_each
• sdl2 related packages
• see make.sh for details

howto run

• using script (recommended): ./make.sh && ./glos
• using cmake: mkdir build && cd build && cmake .. && make && cd .. && build/glos

sample game

• multiplayer enabled proof of concept
  • threaded_grid must be false for deterministic behavior
• shoot asteroids and pick up power ups for the gun
• developed to test the framework
• source in src/application/ and assets/
• howto keys
  • w: thrust
  • a: rotate left
  • d: rotate right
  • j: fire
  • k, l: cameras
  • F1: print cells
  • F2: collisions on/off (this will make clients out-of-sync)
  • F3: render on/off
  • F4: cycle through shaders
  • F5: render normals on/off
  • F6: render bounding spheres on/off
  • F7: hud on/off
  • F8: render grid cells on/off

todo

• another sample game in a 3D sandbox-like environment
• and much more in todo.txt