I see Julian, so when you said you were looking for an "embedded language for doing quests" that's exactly what you meant... :)
I'm curious how you end up splitting your data structures. Perhaps it's all in C/C++ and then you access then from Scheme? There's an example of you might do that, if you haven't found out already: http://wiki.call-cc.org/Wrapping%20simple%20c%20structs You can also use chicken-bind <http://wiki.call-cc.org/eggref/4/bind> to familiarize yourself with foreign-lambda and friends. Chicken-bind has almost a complete C/C++ parser and can produce foreign-lambdas: $ echo "struct player { int level, health; }" | chicken-bind - -o - ;;; GENERATED BY CHICKEN-BIND FROM - (begin (define player-level (foreign-lambda* integer (((c-pointer (struct "player")) s)) "return(s->level);")) (define player-health (foreign-lambda* integer (((c-pointer (struct "player")) s)) "return(s->health);")) (define make-player (foreign-lambda* (c-pointer (struct "player")) ((integer level) (integer health)) "struct player *tmp_ = (struct player *)C_malloc(sizeof(struct player));\ntmp_->level = level;\ntmp_->health = health;\nreturn(tmp_);;\n"))) ;;; END OF FILE If you don't have it already, you can do `chicken-install bind` and play around. Note that `make-player` above leaks memory. Best of luck! K. On Thu, Jan 24, 2013 at 1:25 AM, Julian Day <jcd...@mail.usask.ca> wrote: > On 23/01/2013 6:09 PM, Kristian Lein-Mathisen wrote: > > Are you planning on using any established game-engines or libraries? >> What will probably become very interesting is where your C++-code ends >> and where your Scheme begins. >> > > Hi Kristian, > > The game is currently pure C and C++. As for libraries, I currently use > xerces (XML), curses (UI), Google Test, and boost/stl. The game itself is > currently in a playable state - the player can win or lose, there's a > generated world to explore, etc., though it's currently pretty bare. > > My plan is to start with reasonably small scope, and use Scheme for the > quest logic. I'd like to have a number of optional side quests beyond the > basic roguelike "dive to the bottom of the dungeon". I could do this in > C++, but I see an opportunity to work in my favourite programming language, > so I'm going to take it. :) > > So I have a crazy idea, how about writing all of it in Scheme? So >> instead of exposing a function to add a message to the UI, you can >> expose functions to draw the UI, and do your game in Scheme. Then as >> you move along and things settle, you can port the slow/critical parts >> to faster C-code if you need to. Just a thought. There are several eggs >> <http://wiki.call-cc.org/**chicken-projects/egg-index-4.**html#graphics<http://wiki.call-cc.org/chicken-projects/egg-index-4.html#graphics>> >> for >> >> graphics available that might suit your drawing needs, like cairo or >> opengl. >> > > Much too late for that, I'm afraid! The game itself is currently just > under 2 MB of code, resource strings, and configuration details. I'm quite > happy with its current state. I'd love to try Scheme as the main language > for a game, but this project's much too far in for that. > > Julian > >
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