Did you encounter any difficulties in your development because of Haskell? Well, Haskell is different compared with other languages like C. I thought collision detection would be easier if i could use some local or global variables, but i managed to get around it. Was lazy evaluation ever a problem? I found some space leaks in the game, so i had to profile and enforce strictness in some areas. Why did you choose Yampa to program the game entities? Did this give you a particular advantage? Me and Sean Seefried thought it that would be interesting to use FRP in the game. I thought the design of the Space Invaders game in the paper "The Yampa Arcade" would work for this game and it did. We could use Yampa's parallel switchers to simulate game entities simultaneously without much trouble. I felt that Yampa offered good encapsulation. State information could be kept inside the signal function used to define the game entity and they were updated within that function. So with a well designed interface we could add game entities without major changes to the rest of the program. Isn't your frame rate a bit low? Yeah, it does run slower than Quake 3 which would run on my Pentium II 350 and voodoo3 , currently i doubt my game could do the same. I'm sure there are optimisations that could be used to improve the games performance. On my machine with an Athlon 1900+ and a Geforce 4mx the game runs at 60fps in "leveleg". If you find that the framerate doesn't go above 60fps, its because its capped at 60. HopenGL I didn't find any missing features. Perhaps a listing of functions that have changed significantly from the original API could be made? ( I've forgotten which functions that I had trouble looking for though, but it wasn't because their gl prefixes were removed) regards, Mun On Tue, 22 Nov 2005, Joel Reymont wrote:
Mun,
I hope this ushers the era of Haskell games! I, for one, was certainly looking for something like this.
Did you encounter any difficulties in your development because of Haskell?
Was lazy evaluation ever a problem?
Why did you choose Yampa to program the game entities? Did this give you a particular advantage?
Isn't your frame rate a bit low?
Thanks, Joel
On Nov 22, 2005, at 6:05 AM, Mun Hon Cheong wrote:
Frag is a 3D First Person Shooting game.
Features:
*Yampa, a domain-specific embedded language for the programming of hybrid systems that using the concepts of Functional Reactive Programming (FRP) was used to program the game entities.