1. Software Engineering for Computer Games Computer games and game engines – crash course

2. Game engine Computer game = infrastructure + content Game engine = infrastructure layer of game development process

3. Game engine Same infrastructure, several games  Example: Unreal engine (http://www.unrealtechnology.com)http://www.unrealtechnology.com Dozens of games developed using Unreal Big business: Unreal license can cost US$750,000

4. Game engine – Unreal Unreal games (a few examples):

5. Game engine “Technical” issues encapsulated in infrastructure “Artistic” issues (i.e. content) released from technicalities

6. Game engine generic useful Usefulness versus Genericity

7. Game engine – 2D engines 2D games are (just) slightly simpler to develop and implement, including technical issues 2D game engines have (just) slightly less problems with which to deal

8. 2D game engine – example Gamemaker by Mark Overmars http://www.gamemaker.nl Written in Delphi v.7 About 40 thousand lines of code Project started in 1999 First public release took about 4 months Present version: 6.1

9. 2D game engine - example Hints:  Follow the simple game construction example in the next slides  From that, infer some basic features your game engine must present  Check the material at http://www.gamemaker.nl http://www.gamemaker.nl  Build your requirements

10. 2D game engine – example WARNING:  Your project cannot be too complex – otherwise you will not complete the required steps in time  Your project cannot be too simple – it MUST keep the whole team busy, and it MUST be such that a smaller team could not complete it

11. Gamemaker A maze game

12. Gamemaker Graphic elements (“sprites”) – wall

13. Gamemaker Graphic elements (“sprites”) – goal

14. Gamemaker Graphic elements (“sprites”) – agent

15. Gamemaker Objects – wall (no associated event)

16. Gamemaker Objects – goal

17. Gamemaker Objects – agent(I): move according to arrows

18. Gamemaker Objects – agent(II): grid alignment

19. Gamemaker Objects – agent(III): stop when hitting wall

20. Gamemaker Rooms:

21. Gamemaker Rooms:

22. Game engines Additional information:  Game Engine Anatomy 101 – http://www.extremetech.com/article2/0,3973,594,00.asp http://www.extremetech.com/article2/0,3973,594,00.asp  Your lecturer  Your teaching assistants  http://www.ime.usp.br/~lidet http://www.ime.usp.br/~lidet