Game Engine Architecture
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The document outlines the architecture of a game engine, detailing its main classes such as view controller, scene manager, and nodes for rendering. It covers various components including resources like textures and sounds, and explains the roles of different nodes (e.g., buffer, sprite, camera) in the rendering pipeline. Additionally, it mentions game-related features like physics simulation and monetization strategies.
Game Engine Architecture
- 3. MAIN CLASSES
- 4. VIEW CONTROLLER, VIEW • Update loop • Render loop • Events
- 5. SCENE MANAGER • Called on update and render cycles • Swaps scenes • Handles events
- 6. SCENE • Content into scenes • Nodes to be rendered • Per-frame processing
- 7. NODE • Basic elements • Tree hierarchy • Applies selected properties from its parent
- 8. RESOURCES
- 9. TEXTURES • Graphical data • Avoid multiple memory usage • Preloading
- 10. FONTS • Image, or • Pre-generated bitmap from vector font
- 11. SOUNDS • Short sound effects • Instant play • Simultaneous play • Uncompressed data • Preloading
- 12. SHADERS • Programs for GPUs • Visual effects • Less CPU usage
- 13. MATERIALS • Lighting properties • Shader Program selection • Used by Buffer Nodes
- 14. VERTEX AND INDEX BUFFER • Vertex data • Index data • Points, lines, or triangles • Owned by Buffer Nodes
- 15. NODES
- 16. BUFFER NODE • Draws aVertex Buffer • Index Buffer is optional
- 17. SPRITE NODE • Textured sprite • Rectangular 2D image • Clipping
- 18. LABEL NODE • Draws a string • Uses Font resource • Align modes • Word-wrap • Clipping
- 19. EMITTER NODE • Particle systems • Visual effects • Own coordinate-system • Source of particles
- 20. CAMERA NODE • Represents the viewer’s point of view • Used by the Render Pipeline
- 21. LIGHT NODE • Ambient, directional, point source • Lighting is enabled by the used Material • Limited count
- 22. SOUND NODE • Plays a sound • 3D or stereo sound effect by its position • Attach to graphical representation
- 23. MUSIC NODE • Plays the background music • Single • Compressed data • Buffered play • Looping
- 24. RENDER PIPELINE
- 25. RENDER PIPELINE • Executed on render cycle • For the presented scene • Single or multiple steps
- 26. RENDER STEP • Selects destination buffer • Specifies root source node (generally the scene) • Uses a camera for the point of view
- 27. OTHER COMPONENTS
- 28. GAME RELATED • 2D or 3D physics simulation • Game Center or similar gaming network
- 29. MONETIZATION, MEDIA • In-app purchases • Advertising • Social media interactions