tag:blogger.com,1999:blog-1945099544736981682011-04-21T13:49:08.717-07:00Rob Hendersonhttp://www.blogger.com/profile/09721662095088057566noreply@blogger.comBlogger31100tag:blogger.com,1999:blog-194509954473698168.post-9027897609598929382008-04-06T04:37:00.000-07:002008-04-06T06:21:31.203-07:00Okay, slight change of plan. I'll be using <a href="http://hge.relishgames.com/doc/index.html">HGE</a>, not the Irrlicht engine, as the base for my game. Basically, I will be making a 2D game, but I need sprite rotation/scaling, alpha blending and additive blending. HGE is perfect for my needs - I'd like to say thanks to Haaf for developing this great piece of free software!<br /><br />I also found a great comprehensive listing of game engines, both free and commercial, at the <a href="http://wiki.gamedev.net/index.php/Game_Engines">Game Programming Wiki</a>.<br /><br />So, I've made a minimal wrapper of HGE and hooked it up to Lisp via the CFFI. It works, but it's far from ideal. This biggest problem is lack of robustness: when an error occurs on the Lisp side, the C++ side crashes too, and I have to restart the entire game engine. To achieve real interactive development, I want to be able to modify the Lisp code in arbitrary ways, and to see the results instantly without having to wait for Direct3D to reinitialise and all that.<br /><br />My current plan is to run the C++ engine and the Lisp game in separate operating system processes, and have them communicate by sending messages to one another. This should hopefully improve matters - we'll see how it goes...<br /><br />Thanks for everyone's comments by the way. I'm aware that CLisp is not ideal, but I've had to rule out commercial Lisps such as Corman/LispWorks because I intend to release this project as free software. I want to be able to freely distribute the Lisp system. On the other hand, I also intend to make the project portable between ANSI Common Lisp implementations.<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/194509954473698168-902789760959892938?l=lispgame.blogspot.com' alt='' /></div>Rob Hendersonhttp://www.blogger.com/profile/09721662095088057566noreply@blogger.com4tag:blogger.com,1999:blog-194509954473698168.post-23741542346630941612008-04-02T15:38:00.000-07:002008-04-02T16:06:12.897-07:00Right - I've chosen CLisp for the lisp implementation. It'll do for now - later I might try out ECL and GNU Common Lisp. The following helped me (as a reference point for getting SLIME to work): <a href="http://www.gigamonkeys.com/lispbox/">http://www.gigamonkeys.com/lispbox/.</a> Also, I've installed and tested ASDF and the CFFI.<br /><br />I'll be using the <a href="http://irrlicht.sourceforge.net/index.html">Irrlicht Engine</a> for graphics, as it has the features I need, and good documentation :)<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/194509954473698168-2374154234663094161?l=lispgame.blogspot.com' alt='' /></div>Rob Hendersonhttp://www.blogger.com/profile/09721662095088057566noreply@blogger.com6tag:blogger.com,1999:blog-194509954473698168.post-68577477937238190532008-04-02T03:55:00.000-07:002008-04-02T04:07:38.022-07:00As I've got a bit of free time this week, I'd like to make a game in Common Lisp. The target platform will be Windows XP. I'll keep a record of the development here.<br /><br />Okay, first I need to download Emacs and a Lisp system that runs on windows...<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/194509954473698168-6857747793723819053?l=lispgame.blogspot.com' alt='' /></div>Rob Hendersonhttp://www.blogger.com/profile/09721662095088057566noreply@blogger.com3