Introduction to Game Programming

Things you need to know

George Georgiev

http://academy.telerik.com

Technical Trainer

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George AtanasovFront-End Developer

Table of Contents Understanding Game programming

What is it?

Specifics

Tools and languages

C++ - The industry standard language C++ & Game programming

Why not C# ?

2

Game ProgrammingElements, Specifics, Tools

What is Game Programming?

Game programming handles: Loading game resources

User input

Game events

Scripting

Game objects interaction

AI characters

Game sounds and visualization

Results, such as winning or losing4

What is Game Programming (2)

Game programming consists of: “Game logic” programming

Graphics programming

AI programming (not necessarily)

Audio programming (not necessarily)

Physics programming (not necessarily)

5

What is Game Programming (3)

Game programming IS NOT Game Development It is only a part of it

Game programming is cool! You can play your game and

pretend you’re debugging it

6

Specifics of Game Programming

Game programming specifics The “Game loop”

Starting from scratch

Usage of many programming concepts

System requirements

7

Specifics of Game Programming (2)

A basic “Game loop” in pseudocode

while( user doesn't exit ) check for user input run AI move enemies resolve collisions

draw graphics play sounds end while

8

Specifics of Game Programming (3)

What else is special about game programming? No strict requirements

No one expects complete accuracy

Need to balance “challenges” with “rewards”

Being fail-safe is not a priority

Small optimizations count

Greedy optimizations count9

Tools Programming languages

C / C++

C#

Java

Scripting languages Custom-made languages (very

common)

Lua

Python10

Tools (2) Libraries and APIs

Single-purpose Graphics – Direct3D, OpenGL, OGRE

Physics – Bullet Physics Library, ODE

Multi-purpose DirectX

XNA

Irrlicht Engine

Unreal Engine11

Tools (3) Benchmarking tools

Mainly framerate tracking software Fraps

Alternative development approaches Game development software

Game maker

3D modeling software with scripting capabilities

The Internet… 12

C++The industry standard language

What is C++? The most widely used and popular programming language Object-oriented

Mid-level

Compiles to binary

Fast

Low memory usage

14

C++ & Game programming

The industry standard language Most popular games are written in

C++

A lot of APIs are written in and for C / C++

Runs almost on everything

The C++ community is huge

Not a dying language

15

Why aren't we using C# ?

Too young as a language Can’t compare to C++’s community

Not designed to be as fast as C++ 10% faster counts in game

programming

Too high-level and style-demanding Game programming requires freedom

C# without .NET is like C++ without the “++”

The lower you go, the more you know We (you) are here to learn

16

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