Allow mods structured like modules

[dungeon-master.git] / src / mods.cpp

diff --git a/src/mods.cpp b/src/mods.cpp
index bbbd6c46818095814f8cfa6e7ab525ef282ba774..dea09b633b0e40261e5d25c060b849e95bc3339b 100644 (file)
--- a/src/mods.cpp
+++ b/src/mods.cpp
@@ -1,34 +1,82 @@
+/* Dungeon Master --- RPG Adventure Generator
+   Copyright © 2019 Javier Sancho <jsf@jsancho.org>
+
+   Dungeon Master is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   Dungeon Master is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Dungeon Master. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <dirent.h>
 #include <iostream>
 #include <libguile.h>
+#include "generators.h"
 #include "mods.h"
 #include "paths.h"
 
-SCM register_generator(SCM name, SCM proc)
+
+SCM register_scene_generator (SCM name, SCM type, SCM proc)
 {
-  printf ("Register: %s\n", scm_to_locale_string(name));
-  scm_call_1(proc, scm_from_int(-1));
+  SceneGenerator generator {scm_to_locale_string (name), scm_to_locale_string (type), proc };
+  //register_generator (generator);
+  printf ("Register: %s (%s)\n", generator.name.c_str (), generator.type.c_str ());
+  scm_call_1 (proc, scm_from_int (-1));
   return SCM_UNSPECIFIED;
 }
 
-void init_dungeon_master_module(void *unused)
+void init_dungeon_master_module (void *unused)
 {
-  scm_c_define_gsubr("register-generator", 2, 0, 0, (scm_t_subr)register_generator);
-  scm_c_export("register-generator", NULL);
+  scm_c_define_gsubr ("register-scene-generator", 3, 0, 0, (scm_t_subr) register_scene_generator);
+  scm_c_export ("register-scene-generator", NULL);
 }
 
-void scm_init_dungeon_master_module()
+void scm_init_dungeon_master_module ()
 {
-  scm_c_define_module("dungeon-master", init_dungeon_master_module, NULL);
+  scm_c_define_module ("dungeon-master", init_dungeon_master_module, NULL);
 }
 
-void load_mods()
+void add_to_load_path (std::string path)
 {
-  std::set<std::string> paths = get_dm_paths();
-  for (const std::string &path : paths) {
-    std::cout << path << std::endl;
-  }
-
-  scm_init_guile();
-  scm_init_dungeon_master_module();
-  scm_primitive_load(scm_from_locale_string("mods/default/main.scm"));
+  // Add path to %load-path variable, needed for modules created in mods
+  std::string exp = "(add-to-load-path \"" + path + "\")";
+  scm_c_eval_string (exp.c_str ());
+}
+
+void load_dmaster_mods ()
+{
+  scm_init_guile ();
+  scm_init_dungeon_master_module ();
+
+  std::set<std::string> paths = get_dmaster_paths ();
+  DIR* mods_dir;
+  struct dirent* mod;
+  std::string
+    mods_path,
+    mod_main;
+
+  for (const std::string &path : paths)
+    {
+      mods_path = path + PATH_DELIM + "mods";
+      add_to_load_path (mods_path);
+      mods_dir = opendir (mods_path.c_str ());
+      if (mods_dir != NULL)
+        {
+          while (mod = readdir (mods_dir))
+            {
+              if (strstr (mod->d_name, ".scm") != NULL) {
+                mod_main = mods_path + PATH_DELIM + mod->d_name;
+                scm_primitive_load (scm_from_locale_string (mod_main.c_str ()));
+              }
+            }
+        }
+      closedir (mods_dir);
+    }
 }