Duck Bowling

A physics based game where you play as a duck destroying various ceramic items. It is intended mainly as a tech demo for my OpenGL renderer, which most of the development time was spent on.

Building:

This should work on Linux. You will most likely also have to install some additional dependencies if you get linking errors (e.g. on fedora: sudo dnf install mesa-libGLU-devel alsa-lib-devel). Building:

git clone  https://github.com/snej55/mix_simulator.git
cd mix_simulator

# build it
cmake -S . -B build
cmake --build build/ -j$(nproc)

# to run
./build/main

Running on MacOS:

brew install zibuyin/duckbowling/duckbowling
duckbowling

Renderer Features:

• Physically based rendering
• IBL (Image Based Lighting)
• Skeletal animation
• GLTF Model loading
• Hybrid renderer (deferred shading / forward rendering)
• HDR (ACES & Khronos PBR Neutral)
• Bloom (PBR)
• SSAO (Screen Space Ambient Occlusion)
• Anti-aliasing (FXAA)
• JSON Scene loading
• Frustum Culling (AABB bounding volumes)
• Freetype2 font rendering
• Physics engine (Jolt)
• Spatial audio (SoLoud)
• Cascading Shadow Maps
• Flow field pathfinding (static quadtree generation)

Credits / Libraries in use:

• ambientcg.com (PBR materials)
• polyhaven.com (HDRI maps)
• Free sfx: kenny.nl, mixkit.co
• cmftStudio: (IBL irradiance maps)
• GLFW (windowing library)
• GLAD (OpenGL bindings)
• GLM (Matrix operations)
• JoltPhysics (Physics engine)
• SoLoud (Spatial audio)
• Assimp (Model loading)
• STB_Image (Texture loading)
• Freetype2 (TTF font rendering)
• nlohmann json (JSON loading)
• mikktspace.h (calculate TBN matrix tangents)
• @zibuyin (MacOS build)

TODO:

Details

• Finish IBL
• Skeletal animation
• PBR Textures
• PBR Material loading
• Deferred rendering
• Mesh sorting (render opaque meshes deferred and transparent/translucent using forward)
• Duplicate material checks? Batch render meshes using material index vertex data?
• Animate transparent meshes
• Fog
• Implement static entities
• Fix transparent mesh culling
• SSAO
• Add FXAA anti-aliasing
• Global materials
• JSON Scene loading
• Frustum culling
• Space partitioning
• Bounding volume generation
• Main game class
• Level editor
• Add lights to level editor
• Rag dolls?
• Fix arena deletion order (child -> parent -> root)
• Add Jolt Physics
• Point lights
• Add shader compilation test
• Add lens dirt
• Find lens dirt texture
• Area lights
• Optimize static shader uniforms
• Add player character + controls/kinematic body
• Create player models
• Implement freetype2 font rendering
• Screen coordinates shape rendering
• Add UI framebuffer
• Add cascading shadow maps
• Smooth cascade transition
• Add credits
• Make camera follow player
• Add alpha to shape rendering
• Add settings
• Add in game font
• Find new HDRI
• Make some music
• Add physics sfx using jolt contact listeners
• Add sliding sfx
• Add different sfx for different materials
• Generate flow field quadtree
• Paralax mapping with tesselation shader?
• Quad tree generation
• Flow field pathfinding
• Make some models
• Generate shards in blender
• Preload jolt convex hulls
• Shatter logic
• Test shadows with complex shapes
• Flow field generation
• Clean up data folder
• Convex hull preloading (export jolt bodies as binaries)
• Particle vfx
• Load all assets at the start
• Fix sounds
• Fix pathfinding when player is same tile
• Different screen resolutions
• Screenshake
• Variance shadow mapping?
• Add settings page to menu
• Score
• Spikes?
• Star particles?
• Dash
• Collision particles
• Shockwave postprocessing
• Perlin noise fog?
• Make camera scroll change focal length
• Multithreaded assets loading (partially)
• Cloudy skybox
• Different fog intensities
• Add invisible walls around whole thing
• Try some cool post processing fx (cross stitching?)
• Duck puns on first menu
• Level transitions
• Add tonemapping options to settings
• Lens dirt!

Game loop (today):

• Create decor
• Maze generation?
• Walls around level
• New HDRI
• Limit player flying
• Find rubber duck model
• Particles

Blender items:

• Mug
• Bud vase
• Pot
• Cider jug (remake)
• Wrecking ball
• Pestle
• Anaphora
• Ewer
• Player character (rubber duck)
• Add all the shards

Debugging/Release todo:

• Polish shadows
• Fix camera jitter when falling
• Fix minimizing bug on Windows
• Fix mouse position scaling with menu button on Windows
• Fix MacOS build
• Centre models around WS origin
• Compile release version
• Test linux build
• Fix window title