X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmap_objects.h;h=fb33fe504fd0072b79442b982d3dfab32caf2282;hb=dd29efee173dfad19a4ea5fa16f35aabb17c4642;hp=f39df0daedf99ff059778a2f21cd035bb4c727d3;hpb=2e690e2500e66535018bb6e01222442c074cb298;p=plomrogue

diff --git a/src/map_objects.h b/src/map_objects.h
index f39df0d..fb33fe5 100644
--- a/src/map_objects.h
+++ b/src/map_objects.h
@@ -1,49 +1,124 @@
+/* map_objects.h
+ *
+ * Structs for objects on the map and their type definitions, and routines to
+ * initialize these and load and save them from/to files.
+ */
+
 #ifndef MAP_OBJECTS_H
 #define MAP_OBJECTS_H
 
-#include <stdio.h>
-#include "yx_uint16.h"
 
+
+#include <stdio.h> /* for FILE typedef */
+#include "yx_uint16.h" /* for yx_uint16 coordinates */
 struct World;
 
-struct Player {
-  struct yx_uint16 pos;
-  unsigned char hitpoints; };
-
-struct MapObj {
-  void * next;
-  char type;
-  struct yx_uint16 pos; };
-
-struct MapObjDef {
-  struct MapObjDef * next;
-  char id;
-  char mapchar;
-  char * desc; };
-
-struct Item {
-  struct MapObj map_obj; };
-
-struct Monster {
-  struct MapObj map_obj;
-  unsigned char hitpoints; };
-
-struct ItemDef {
-  struct MapObjDef map_obj_def; };
-
-struct MonsterDef {
-  struct MapObjDef map_obj_def;
-  unsigned char hitpoints_start; };
-
-extern void init_map_object_defs (struct World *, char *);
-extern void write_map_objects_monsterdata (void *, FILE *);
-extern void write_map_objects (void * start, FILE *, void (*) (void *, FILE *) );
-extern void read_map_objects_monsterdata (void *, FILE *);
-extern void read_map_objects (void *, FILE *, size_t, void (*) (void *, FILE *) );
-extern void build_map_objects_monsterdata (struct MapObjDef *, void *);
-extern void build_map_objects_itemdata (struct MapObjDef *, void *);
-extern void * build_map_objects (struct World *, void *, char, unsigned char, size_t,
-                                 void (*) (struct MapObjDef *, void *));
-extern struct MapObjDef * get_map_obj_def (struct World *, char);
+
+
+/* Player is non-standard: single and of a hard-coded type. */
+struct Player
+{
+    struct yx_uint16 pos;
+    unsigned char hitpoints;
+};
+
+
+
+/* Structs for standard map objects. */
+
+struct MapObj
+{
+    void * next;
+    char type;            /* Map object type identifier (see MapObjDef.id). */
+    struct yx_uint16 pos; /* Coordinate of object on map. */
+};
+
+struct Item
+{
+    struct MapObj map_obj;
+};
+
+struct Monster
+{
+    struct MapObj map_obj;
+    unsigned char hitpoints;
+};
+
+
+
+/* Structs for map object *type* definitions. Values common to all members of
+ * a single monster or item type are harvested from these.
+ */
+
+struct MapObjDef
+{
+    struct MapObjDef * next;
+    char id;      /* Unique identifier of the map object type to describe. */
+    char mapchar; /* Map object symbol to appear on map.*/
+    char * desc;  /* String describing map object in the game log. */
+};
+
+struct ItemDef
+{
+    struct MapObjDef map_obj_def;
+};
+
+struct MonsterDef
+{
+    struct MapObjDef map_obj_def;
+    unsigned char hitpoints_start; /* Hitpoints each monster starts with. */
+};
+
+
+
+/* Initialize map object type definitions from file at path "filename". */
+extern void init_map_object_defs(struct World * world, char * filename);
+
+
+
+/* Build into memory starting at "start" chain of "n" map objects of type
+ * "def_id", pass either "build_map_objects_itemdata" or
+ * "build_map_objects_monsterdata" as "b_typedata"() to build data specific
+ * to monsters or items (or more forms if they ever get invented).
+ *
+ * TODO: function should decide by itself what "b_typedata"() to call based
+ * on monster-or-item info in MapObjDef struct or from a table mapping type
+ * identifiers to these.
+ */
+extern void * build_map_objects(struct World * world, void * start, char def_id,
+                                 unsigned char n, size_t size,
+                                 void (* b_typedata) (struct MapObjDef *,
+                                                      void *));
+extern void build_map_objects_itemdata(struct MapObjDef * map_obj_def,
+                                       void * start);
+extern void build_map_objects_monsterdata(struct MapObjDef * map_obj_def,
+                                          void * start);
+
+
+
+/* Write to/read from file chain of map objects starting/to start in memory at
+ * "start", use "w_typedata"()"/"r_typedata" for data specific to monsters
+ * (pass "write_map_objects_monsterdata"/"read_map_objects_itemdata") or items
+ * (currently they have no data specific only to them, so pass NULL). Use "size"
+ * in read_map_objects() to pass the size of structs of the affected map object
+ * type.
+ *
+ * TODO: the size of these structs should not need to be passed but instead be
+ * available via the type id of the affected map object type. The TODO above
+ * towards the function deciding its helper function by itself also applies.
+ */
+extern void write_map_objects(void * start, FILE * file,
+                              void (* w_typedata) (void *, FILE *) );
+extern void read_map_objects(void * start, FILE * file, size_t size,
+                             void (* w_typedata) (void *, FILE *) );
+extern void write_map_objects_monsterdata(void * start, FILE * file);
+extern void read_map_objects_monsterdata( void * start, FILE * file);
+
+
+
+/* Get pointer to the map object definition of identifier "def_id". */
+extern struct MapObjDef * get_map_obj_def(struct World * world, char def_id);
+
+
 
 #endif