1 files changed, 86 insertions, 0 deletions
diff --git a/src/obj.h b/src/obj.h
new file mode 100644
index 0000000..240b4a9
--- /dev/null
+++ b/src/obj.h
@@ -0,0 +1,86 @@
+/*
+ *   NetCosm - a MUD server
+ *   Copyright (C) 2016 Franklin Wei
+ *
+ *   This program 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.
+ *
+ *   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "globals.h"
+
+#include "room.h"
+
+/* Objects belong to an object class. Objects define their object
+ * class through the class name, which is converted to a class ID
+ * internally.
+ */
+
+struct object_t;
+
+typedef struct child_data user_t; // see server.h for the definition
+
+struct obj_class_t {
+    const char *class_name;
+
+    /* write an object's user data to disk */
+    void (*hook_serialize)(int fd, struct object_t*);
+
+     /* read an object's user data */
+    void (*hook_deserialize)(int fd, struct object_t*);
+
+    /* called when an object is taken;
+     * true = can take
+     * false = can't take
+     * no function (NULL) = can take */
+    bool (*hook_take)(struct object_t*, user_t *user);
+
+    /* called when dropping an object;
+     * true: can drop
+     * false: can't drop
+     * NULL: can drop
+     */
+    bool (*hook_drop)(struct object_t*, user_t *user);
+    void* (*hook_clone)(void*); /* clone the user data pointer */
+    void (*hook_destroy)(struct object_t*);
+    const char* (*hook_desc)(struct object_t*, user_t*);
+};
+
+struct object_t {
+    char *name; /* no articles: "a", "an", "the", needs to be free()able */
+
+    struct obj_class_t *class;
+
+    bool list;
+
+    void *userdata;
+};
+
+/* returns a new object of class 'c' */
+struct object_t *obj_new(const char *c);
+
+/* serialize an object */
+void obj_write(int fd, struct object_t *obj);
+
+/* deserialize an object */
+struct object_t *obj_read(int fd);
+
+/* make a duplicate of an object
+ * used for "moving" an object */
+struct object_t *obj_dup(struct object_t *obj);
+
+void obj_free(void*);
+
+/* shut down the obj_* module */
+void obj_shutdown(void);