By Sanjay Madhav
Game Programming Algorithms and Techniques is a close review of some of the vital algorithms and methods utilized in game programming this present day. Designed for programmers who're acquainted with object-oriented programming and easy facts buildings, this booklet specializes in useful suggestions that see real use within the video game industry.
Sanjay Madhav takes a special platform- and framework-agnostic strategy that might support increase almost any online game, in any style, with any language or framework. He provides the basic suggestions for operating with second and 3D pix, physics, synthetic intelligence, cameras, and masses more.
Each suggestion is illuminated with pseudocode that would be intuitive to any C#, Java, or C++ programmer, and has been subtle and confirmed in Madhav’s online game programming classes on the college of Southern California. assessment questions after each one bankruptcy aid solidify an important strategies ahead of relocating on.
Madhav concludes with an in depth research of 2 entire video games: a second iOS side-scroller (written in Objective-Cusing cocos2d) and a 3D PC/Mac/Linux tower protection video game (written in C# utilizing XNA/ MonoGame). those video games illustrate a few of the algorithms and strategies lined within the prior chapters, and the complete resource code is out there at gamealgorithms.net.
• online game time administration, pace keep watch over, and making sure consistency on varied hardware
• crucial 2nd pics options for contemporary cellular gaming
• Vectors, matrices, and linear algebra for 3D games
• 3D portraits together with coordinate areas, lights and shading, z-buffering, and quaternions
• dealing with today’s large choice of electronic and analog inputs
• Sound structures together with sound occasions, 3D audio, and electronic sign processing
• basics of video game physics, together with collision detection and numeric integration
• Cameras: first-person, stick to, spline, and more
• synthetic intelligence: pathfinding, state-based behaviors, and strategy/planning
• consumer interfaces together with menu structures and heads-up displays
• Scripting and text-based facts documents: while, how, and the place to exploit them
• fundamentals of networked video games together with protocols and community topology
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Extra info for Game Programming Algorithms and Techniques: A Platform-Agnostic Approach
2 Screen tearing caused by updating video data while the CRT is drawing. One solution to this problem is to synchronize it so the game loop renders only during the vertical blank interval. This will fix the split-image problem, but it limits the amount of time the game loop has to render to the color buffer to only that VBLANK period, which isn’t going to be enough time for a modern game. 21 22 CHAPTER 2 2D GRAPHICS It is instead possible to solve screen tearing with a rendering technique called double buffering.
A typical approach is to have an array of images that represents all the possible states of a particular character, regardless of the particular animation. For example, a character that has both a walk and run cycle, each ten frames in length, would have an array of 20 images in total. To keep things simple, these images would be stored sequentially, which would mean frames 0–9 would correspond to the walk cycle and frames 10–19 would correspond to the run cycle. 25 26 CHAPTER 2 2D GRAPHICS But this means we need some way to specify which frames correspond to which animations.
Although the level data could be a hardcoded 2D array of integers, it will work better if the level data is stored in an external file. The most basic file format would be a text file that lists the tile ID of each tile at each location on the screen. So a level that’s 5×5 tiles in size may look like this: // Basic level file format 5,5 0,0,1,0,0 0,1,1,1,0 1,1,2,1,1 0,1,1,1,0 0,0,1,0,0 In this file format, the first line is ignored so the user can write a comment. The second line specifies the length and width of the level, and then the raw tile ID data is listed for each row and column.