#include "readwrite.h" /* for [read/write]_uint[8/16/23][_bigendian]() */
#include "misc.h" /* for textfile_sizes(), find_passable_pos() */
#include "main.h" /* for World struct */
+#include "rexit.h" /* for err_exit() */
/* Return pointer to newly allocated map object struct of size "size". If first
* in map object chain ("first" pointing to !0), point "start" to it.
+ *
+ * Returns NULL instead of MapObj pointer if malloc() failed.
*/
static struct MapObj * get_next_map_obj(void * start, char * first,
size_t size, struct MapObj * map_obj);
extern void init_map_object_defs(struct World * world, char * filename)
{
- world->item_def = 0;
- world->monster_def = 0;
+ char * err_o = "Trouble in init_map_object_defs() with fopen().";
+ char * err_s = "Trouble in init_map_object_defs() with textfile_sizes().";
+ char * err_m = "Trouble in init_map_object_defs() with malloc()/calloc().";
+ char * err_c = "Trouble in init_map_object_defs() with fclose().";
+
FILE * file = fopen(filename, "r");
+ exit_err(NULL == file, world, err_o);
uint16_t linemax;
- textfile_sizes (file, &linemax, NULL);
+ exit_err(textfile_sizes(file, &linemax, NULL), world, err_s);
+
struct MapObjDef mod;
struct ItemDef id;
struct MonsterDef md;
+ world->item_def = 0;
+ world->monster_def = 0;
struct ItemDef * * p_p_id = &world->item_def;
struct MonsterDef * * p_p_md = &world->monster_def;
- char * defline = malloc(linemax);
+ char defline[linemax + 1];
char * line_p;
char * delim = " ";
- while (fgets(defline, linemax, file))
+ while (fgets(defline, linemax + 1, file))
{
mod.next = 0;
mod.id = atoi(strtok(defline, delim));
line_p = strtok(NULL, delim);
}
mod.desc = calloc(strlen(line_p), sizeof(char));
+ exit_err(NULL == mod.desc, world, err_m);
memcpy(mod.desc, line_p, strlen(line_p) - 1);
if ('i' == mod.m_or_i)
{
id.map_obj_def = mod;
* p_p_id = malloc(sizeof(struct ItemDef));
+ exit_err(NULL == p_p_id, world, err_m);
* * p_p_id = id;
p_p_id = (struct ItemDef * *) * p_p_id;
}
{
md.map_obj_def = mod;
* p_p_md = malloc(sizeof(struct MonsterDef));
+ exit_err(NULL == p_p_md, world, err_m);
* * p_p_md = md;
p_p_md = (struct MonsterDef * *) * p_p_md;
}
}
- free(defline);
- fclose(file);
+
+ exit_err(fclose(file), world, err_c);
+}
+
+
+
+extern void free_item_defs(struct ItemDef * id_start)
+{
+ if (0 != id_start->map_obj_def.next)
+ {
+ free_item_defs((struct ItemDef *) id_start->map_obj_def.next);
+ }
+ free(id_start->map_obj_def.desc);
+ free(id_start);
+}
+
+
+
+
+extern void free_monster_defs(struct MonsterDef * md_start)
+{
+ if (0 != md_start->map_obj_def.next)
+ {
+ free_monster_defs((struct MonsterDef *) md_start->map_obj_def.next);
+ }
+ free(md_start->map_obj_def.desc);
+ free(md_start);
}
extern uint8_t read_map_objects(struct World * world, void * start, FILE * file)
{
+ char * err = "Trouble in read_map_objects() with get_next_map_obj().";
struct MapObj * map_obj;
struct MapObjDef * mod;
size_t size;
size = sizeof(struct Item);
}
map_obj = get_next_map_obj(start, &first, size, map_obj);
+ exit_err(NULL == map_obj, world, err);
map_obj->type = type;
if ( read_uint16_bigendian(file, &map_obj->pos.y)
|| read_uint16_bigendian(file, &map_obj->pos.x))
extern void * build_map_objects(struct World * world, void * start, char def_id,
uint8_t n)
{
+ char * err = "Trouble in build_map_objects() with get_next_map_obj().";
uint8_t i;
struct MapObj * mo;
char first = 1;
for (i = 0; i < n; i++)
{
mo = get_next_map_obj(start, &first, size, mo);
+ exit_err(NULL == mo, world, err);
mo->pos = find_passable_pos(world->map);
if ('i' == mod->m_or_i)
{
-extern struct MapObjDef * get_map_obj_def (struct World * world, char def_id)
+extern void free_items(struct Item * item)
+{
+ if (0 == item)
+ {
+ return;
+ }
+ free_items((struct Item *) item->map_obj.next);
+ free(item);
+}
+
+
+
+extern void free_monsters(struct Monster * monster)
+{
+ if (0 == monster)
+ {
+ return;
+ }
+ free_monsters((struct Monster *) monster->map_obj.next);
+ free(monster);
+}
+
+
+
+extern struct MapObjDef * get_map_obj_def(struct World * world, char def_id)
{
struct MapObjDef * d = NULL;
for (d = (struct MapObjDef *) world->monster_def;