1 ;;; guile-irrlicht --- FFI bindings for Irrlicht Engine
2 ;;; Copyright (C) 2020 Javier Sancho <jsf@jsancho.org>
4 ;;; This file is part of guile-irrlicht.
6 ;;; Guile-irrlicht is free software; you can redistribute it and/or modify
7 ;;; it under the terms of the GNU Lesser General Public License as
8 ;;; published by the Free Software Foundation; either version 3 of the
9 ;;; License, or (at your option) any later version.
11 ;;; Guile-irrlicht is distributed in the hope that it will be useful, but
12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 ;;; General Public License for more details.
16 ;;; You should have received a copy of the GNU Lesser General Public
17 ;;; License along with guile-irrlicht. If not, see
18 ;;; <http://www.gnu.org/licenses/>.
21 (define-module (irrlicht foreign)
22 #:use-module (system foreign)
23 #:use-module (irrlicht base)
24 #:export (get-irrlicht-proc
27 ;; We use a hash table to store foreign irrlicht methods related with their
29 ;; This is needed because we need to "simulate" C++ inheritance
30 (define remote-proc-table (make-hash-table))
32 (define (get-irrlicht-proc proc-name . objects)
33 (let* ((name (if (null? objects)
35 (let ((classes (map irr-class objects)))
36 (string-join (cons (car classes) (cons proc-name (cdr classes))) "_"))))
37 (proc (hash-ref remote-proc-table name)))
39 (load-extension "libguile-irrlicht" "init_guile_irrlicht")
40 (let ((new-proc (eval-string name)))
41 (hash-set! remote-proc-table name new-proc)
46 (define (null-object? object)
47 (eq? (irr-pointer object) %null-pointer))