Introduction to Game Development
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The document introduces game development concepts, covering technical definitions, market insights, and the mechanics behind game design. It discusses the roles of 3D and 2D graphics, optimization techniques for performance, and the components of game engines. Additionally, it touches on programming aspects, game monetization strategies, and the game publishing process.
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Introduction to Game Development
- 1. Introduction to Game Development SHAHNAWAZ ALAM
- 2. About Me Shahnawaz Alam Developer, TCS Research (Kolkata) Hobbyist Game Programmer
- 3. Introduction to Games What do you mean by Game, technically? Game Trivia : Science, Art and Business. Difference between Application Software, Movie and Game?
- 4. Game Facts Avatar vs GTA 5 (Equal Revenue Generator). Video Game market is highest in entertainment industry (More than Film Industry). Games are simply complex.
- 5. Game: Behind the scene Game works in loop (Programmatically) Initialization //Initializing game assets and components Loop //Loop with condition Updates() //Updates the game parameters and component values Render() //Draw frames on display (using on board graphics or GPU) Loop ends //Loop ends with condition failing Destroy //Destroying game objects to free the allocated memory
- 6. Cont. Game: Behind the scene Every element is a GameObject in a scene possessing different functionality and components. Games are rendered in frame per second depending upon the computing power of the device (Higher the GPU clock and graphics memory better the frame rate thus better performance). We can visualize the scene using any one of the 2 views : Perspective and Orthogonal view. Direct3D and/or OpenGL APIs are required for communication between game and graphics card, it is highly optimized for millions of computing per second.
- 7. 3D vs 2D Games 3D games are made up of 3D Models while 2D ones with Sprites. 3D games have depth visualization using 3D perspective projection.
- 8. Concept of Polygon, Texture and Sprites (Visual aspects of game) Polygons are made up of vertex(smallest unit of graphics). They (Generally triangle) make up the 3D Models creating a mesh. Texture is a 2D image scaled down for optimization of game. Textures are applied on 3D objects for visuals. Sprites are also scaled down version of a 2D image but they are only used for 2D assets.
- 9. Computing Graphics Vertex stores the xyz location in 3D space and pixel-light value. Complex mathematical calculations which are part of physics engine are executed by GPU only and not by CPU (Direct3D/OpenGL helps here). GPU also computes the Projection Matrix of 3D objects(3D vertex array) from scene to form a 2D frame to be displayed on screen.
- 10. Game Optimizations There are two types of optimizations possible CPU Optimization 1. “draw call counts” - CPU computes the light, shader parameters and creates drawing commands for GPU for every object created in frame. 2. Lower the draw call counts better the performance. GPU Optimization 1. Use minimum number of triangles (vertices) per frame. 2. Try to keep number of UV mappings (2D image representation of a 3D model's surface) less.
- 11. Game Programming Graphics programming (including shader development) Animation Physics simulation AI and Gameplay Audio Networking
- 12. Game Engines Game Engines, a framework which has inbuilt physics engine and rendering mechanism. Simplification of complex game making procedure in optimized way. Rendering systems are built upon API such as OpenGL and Direct3D which provide software abstraction of the graphics card. Some of the advanced game engines are Unity3D, UDK etc.
- 13. Game Mathematics There are various applications of mathematics in game programming, Single and Multiple Point Collision Detection, Computational Geometry, Matrix Transformations, 3D Rotation are to name few.
- 14. Game Physics It involves laws of physics into the game for making it appear more realistic to the observer. Physics plays a vital role in process of game creation, though majorly engines have inbuilt physics engines, sometimes tweaking the physics is necessary for some special effects. Physics Simulations (Rigid Body), Particle Systems, and Projectiles are a major part of the physics.
- 15. Platforms Major targeted platforms Personal Computers Consoles (Xbox, PS) Mobiles (iOS, Android, WP) Web
- 16. Game Monetization Advertisements In-App Purchase Sell your game
- 17. Game Ratings and Censorship Game rating system is a system used for the classification of video games into suitability-related groups. Entertainment Software Rating Board (ESRB) – for USA, Canada etc. Pan European Game Information (PEGI) – for European countries.
- 18. Game Publishing Publishing games can be done in two ways - either by self or via publishing companies. Self publishing is majorly done on mobile platforms (iOS, Windows Phone, Android, Mozilla etc.)
- 19. Thank you Any Questions? Contact me email: [email protected] facebook: shaan.shahnawazalam