+/* map_objects.c */
+
#include "map_objects.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include "readwrite.h"
-#include "misc.h"
-#include "main.h"
-
-static struct MapObj * get_next_map_obj (void *, char *, size_t, struct MapObj *);
-
-extern void init_map_object_defs (struct World * world, char * filename) {
-// Initialize map object definitions from file at path "filename".
- world->item_def = 0;
- world->monster_def = 0;
- FILE * file = fopen(filename, "r");
- uint16_t linemax;
- textfile_sizes (file, &linemax, NULL);
- struct MapObjDef mod;
- struct ItemDef id;
- struct MonsterDef md;
- struct ItemDef * * p_p_id = &world->item_def;
- struct MonsterDef * * p_p_md = &world->monster_def;
- char * defline = malloc(linemax);
- char * line_p;
- char m_or_i;
- while (fgets (defline, linemax, file)) {
- mod.next = 0;
- mod.id = atoi(defline);
- line_p = strchr(defline, ' ') + 1;
- m_or_i = * line_p;
- mod.mapchar = * (line_p + 2);
- if ('i' == m_or_i)
- line_p = line_p + 5;
- else {
- md.hitpoints_start = atoi (line_p + 4);
- line_p = strchr (line_p + 4, ' ') + 1; }
- mod.desc = calloc (strlen (line_p), sizeof(char));
- memcpy (mod.desc, line_p, strlen(line_p) - 1);
- if ('i' == m_or_i) {
- id.map_obj_def = mod;
- * p_p_id = malloc (sizeof (struct ItemDef));
- * * p_p_id = id;
- p_p_id = (struct ItemDef * *) * p_p_id; }
- else {
- md.map_obj_def = mod;
- * p_p_md = malloc (sizeof (struct MonsterDef));
- * * p_p_md = md;
- p_p_md = (struct MonsterDef * *) * p_p_md; } }
- free(defline);
- fclose(file); };
-
-extern void write_map_objects_monsterdata (void * start, FILE * file) {
-// Write to file data specific to map objects of type monster.
- struct Monster * m = (struct Monster *) start;
- fputc(m->hitpoints, file); }
-
-extern void write_map_objects (void * start, FILE * file, void (* w_typedata) (void *, FILE *) ) {
-// Write into file the map object chain starting at start, use write_type() for object-type specific data.
- struct MapObj * map_obj;
- for (map_obj = start; map_obj != 0; map_obj = map_obj->next) {
- write_uint16_bigendian(map_obj->pos.y + 1, file);
- write_uint16_bigendian(map_obj->pos.x + 1, file);
- fputc(map_obj->type, file);
- if (w_typedata)
- w_typedata (map_obj, file); }
- write_uint16_bigendian(0, file); }
-
-extern void read_map_objects_monsterdata (void * start, FILE * file) {
-// Read from file data speciifc to map objects of type monster.
- struct Monster * m = (struct Monster *) start;
- m->hitpoints = fgetc(file); }
-
-static struct MapObj * get_next_map_obj (void * start, char * first, size_t size, struct MapObj * map_obj) {
-// Return pointer to map object of "size". If first in chain ("first" pointing to !0), point "start" to it.
- if (* first) {
- struct MapObj * * z = start;
- map_obj = malloc(size);
- * z = map_obj;
- * first = 0; }
- else {
- map_obj->next = malloc(size);
- map_obj = map_obj->next; }
- return map_obj; }
-
-extern void read_map_objects (void * start, FILE * file, size_t size, void (* r_typedata) (void *, FILE *) ) {
-// Read from file chain of map objects starting at start, use r_typedata() for object-type specific data.
- struct MapObj * map_obj;
- uint16_t test;
- char first = 1;
- while (1) {
- test = read_uint16_bigendian(file);
- if (0 == test)
- break;
- map_obj = get_next_map_obj(start, &first, size, map_obj);
- map_obj->pos.y = test - 1;
- map_obj->pos.x = read_uint16_bigendian(file) - 1;
- map_obj->type = fgetc(file);
- if (r_typedata)
- r_typedata (map_obj, file); }
- if (!first)
- map_obj->next = 0; }
-
-extern void build_map_objects_monsterdata (struct MapObjDef * map_obj_def, void * start) {
-// Build data specific to map objects of type monster.
- struct Monster * m = (struct Monster *) start;
- m->map_obj.type = map_obj_def->id;
- struct MonsterDef * md = (struct MonsterDef *) map_obj_def;
- m->hitpoints = md->hitpoints_start; }
-
-extern void build_map_objects_itemdata (struct MapObjDef * map_obj_def, void * start) {
-// Build data speciifc to map objects of type data.
- struct Item * i = (struct Item *) start;
- i->map_obj.type = map_obj_def->id; }
-
-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 *)) {
-// Build chain of n map objects starting at start, use f() for object-specific data.
- unsigned char i;
- struct MapObj * mo;
- char first = 1;
- struct MapObjDef * mod = get_map_obj_def (world, def_id);
- for (i = 0; i < n; i++) {
- mo = get_next_map_obj(start, &first, size, mo);
- mo->pos = find_passable_pos(world->map);
- b_typedata (mod, mo); }
- if (!first)
- mo->next = 0;
- return &mo->next; }
-
-extern struct MapObjDef * get_map_obj_def (struct World * world, char def_id) {
-// Get pointer to the map object definition with id "def_id".
- struct MapObjDef * d = NULL;
- for (d = (struct MapObjDef *) world->monster_def; d->id != def_id && 0 != d->next; d = d->next);
- if (d->id != def_id)
- for (d = (struct MapObjDef *) world->item_def; d->id != def_id && 0 != d->next; d = d->next);
- return d; }
+#include <stdlib.h> /* for free(), atoi() */
+#include <stdint.h> /* for uint8_t */
+#include <stdio.h> /* for FILE typedef */
+#include <string.h> /* for strchr(), strlen(), memcpy(), strtok() */
+#include "readwrite.h" /* for textfile_sizes(), try_fopen(), try_fclose(),
+ * try_fgets()
+ */
+#include "misc.h" /* for try_malloc(), find_passable_pos() */
+#include "main.h" /* for world global */
+#include "rexit.h" /* for err_exit() */
+#include "yx_uint16.h" /* for yx_uint16 struct, yx_uint16_cmp() */
+
+
+
+/* Write representation of "mo" and all of the map objects it owns to "file". */
+static void write_map_object(FILE * file, struct MapObj * mo);
+
+/* Return pointer to map object of "id" in chain starting at "ptr". */
+static struct MapObj * get_map_object(struct MapObj * ptr, uint8_t id);
+
+
+
+static void write_map_object(FILE * file, struct MapObj * mo)
+{
+ char * f_name = "write_map_object()";
+ struct MapObj * mo_ptr = mo->owns;
+ uint8_t i = 0;
+ for (; NULL != mo_ptr; mo_ptr = mo_ptr->next, i++);
+ uint8_t size = 3+1 + 3+1 + 3+1 + 5+1 + 5 + ((1+3)*i) + 1 + 1;
+ char line[size];
+ sprintf(line, "%d %d %d %d %d %d %d %d",
+ mo->id, mo->type, mo->lifepoints, mo->pos.y, mo->pos.x,
+ mo->command, mo->arg, mo->progress);
+ for (mo_ptr = mo->owns; NULL != mo_ptr; mo_ptr = mo_ptr->next)
+ {
+ sprintf(line + strlen(line), " %d", mo_ptr->id);
+ }
+ line[strlen(line) + 1] = '\0';
+ line[strlen(line)] = '\n';
+ try_fwrite(line, strlen(line), 1, file, f_name);
+ for (mo_ptr = mo->owns; NULL != mo_ptr; mo_ptr = mo_ptr->next)
+ {
+ write_map_object(file, mo_ptr);
+ }
+}
+
+
+
+static struct MapObj * get_map_object(struct MapObj * ptr, uint8_t id)
+{
+ while (1)
+ {
+ if (NULL == ptr || id == ptr->id)
+ {
+ return ptr;
+ }
+ struct MapObj * owned_object = get_map_object(ptr->owns, id);
+ if (NULL != owned_object)
+ {
+ return ptr;
+ }
+ ptr = ptr->next;
+ }
+}
+
+
+
+extern void init_map_object_defs(char * filename)
+{
+ char * f_name = "init_map_object_defs()";
+ FILE * file = try_fopen(filename, "r", f_name);
+ uint16_t linemax = textfile_sizes(file, NULL);
+ struct MapObjDef ** last_mod_ptr_ptr = &world.map_obj_defs;
+ char * delim = " ";
+ char line[linemax + 1];
+ while (try_fgets(line, linemax + 1, file, f_name))
+ {
+ struct MapObjDef * mod;
+ mod = try_malloc(sizeof(struct MapObjDef), f_name);
+ mod->next = NULL;
+ mod->id = atoi(strtok(line, delim));
+ mod->corpse_id = atoi(strtok(NULL, delim));
+ mod->char_on_map = * strtok(NULL, delim);
+ mod->lifepoints = atoi(strtok(NULL, delim));
+ char * name = strtok(NULL, "\n");
+ mod->name = try_malloc(strlen(name) + 1, f_name);
+ memcpy(mod->name, name, strlen(name) + 1);
+ * last_mod_ptr_ptr = mod;
+ last_mod_ptr_ptr = &mod->next;
+ }
+ try_fclose(file, f_name);
+}
+
+
+
+extern void free_map_object_defs(struct MapObjDef * mod_start)
+{
+ if (NULL == mod_start)
+ {
+ return;
+ }
+ free_map_object_defs(mod_start->next);
+ free(mod_start->name);
+ free(mod_start);
+}
+
+
+
+extern void write_map_objects(FILE * file)
+{
+ struct MapObj * mo = world.map_objs;
+ while (NULL != mo)
+ {
+ write_map_object(file, mo);
+ mo = mo->next;
+ }
+}
+
+
+
+extern void read_map_objects(FILE * file, char * line, int linemax)
+{
+ char * f_name = "read_map_objects()";
+ struct MapObj ** mo_ptr_ptr = &world.map_objs;
+ char * delim = " ";
+ struct MapObj * mo;
+ fpos_t pos;
+ exit_err(-1 == fgetpos(file, &pos), f_name);
+ while (try_fgets(line, linemax + 1, file, f_name))
+ {
+ mo = try_malloc(sizeof(struct MapObj), f_name);
+ mo->next = NULL;
+ mo->id = atoi(strtok(line, delim));
+ mo->type = atoi(strtok(NULL, delim));
+ mo->lifepoints = atoi(strtok(NULL, delim));
+ mo->pos.y = atoi(strtok(NULL, delim));
+ mo->pos.x = atoi(strtok(NULL, delim));
+ mo->command = atoi(strtok(NULL, delim));;
+ mo->arg = atoi(strtok(NULL, delim));;
+ mo->progress = atoi(strtok(NULL, delim));;
+ mo->owns = NULL;
+ if (mo->id > world.map_obj_count)
+ {
+ world.map_obj_count = mo->id;
+ }
+ * mo_ptr_ptr = mo;
+ mo_ptr_ptr = &mo->next;
+ }
+ exit_err(-1 == fsetpos(file, &pos), f_name);
+ while (try_fgets(line, linemax + 1, file, f_name))
+ {
+ uint8_t id = atoi(strtok(line, delim));
+ uint8_t i;
+ for (i = 0; i < 7; i++)
+ {
+ strtok(NULL, delim);
+ }
+ char * owned = strtok(NULL, "\n");
+ if (NULL != owned)
+ {
+ mo = get_map_object(world.map_objs, id);
+ char * owned_id = "";
+ owned_id = strtok(owned, delim);
+ while (NULL != owned_id)
+ {
+ own_map_object(&mo->owns, &world.map_objs,
+ (uint8_t) atoi(owned_id));
+ owned_id = strtok(NULL, delim);
+ }
+ }
+ }
+}
+
+
+
+extern void add_map_object(uint8_t type)
+{
+ char * f_name = "add_map_object()";
+ struct MapObjDef * mod = get_map_object_def(type);
+ struct MapObj * mo = try_malloc(sizeof(struct MapObj), f_name);
+ mo->id = world.map_obj_count;
+ world.map_obj_count++;
+ mo->type = mod->id;
+ mo->lifepoints = mod->lifepoints;
+ while (1)
+ {
+ struct yx_uint16 pos = find_passable_pos(world.map);
+ struct MapObj * mo_ptr;
+ uint8_t clear = 1;
+ for (mo_ptr = world.map_objs; mo_ptr != NULL; mo_ptr = mo_ptr->next)
+ {
+ if (yx_uint16_cmp(&pos, &mo_ptr->pos) && 0 != mo_ptr->lifepoints)
+ {
+ clear = 0;
+ break;
+ }
+ }
+ if (1 == clear)
+ {
+ mo->pos = pos;
+ break;
+ }
+ }
+ mo->progress = 0;
+ mo->command = 0;
+ mo->arg = 0;
+ mo->owns = NULL;
+ mo->next = NULL;
+ struct MapObj ** last_ptr_ptr = &world.map_objs;
+ struct MapObj * mo_ptr;
+ while (NULL != * last_ptr_ptr)
+ {
+ mo_ptr = * last_ptr_ptr;
+ last_ptr_ptr = & mo_ptr->next;
+ }
+ * last_ptr_ptr = mo;
+}
+
+
+
+extern void add_map_objects(uint8_t type, uint8_t n)
+{
+ uint8_t i;
+ for (i = 0; i < n; i++)
+ {
+ add_map_object(type);
+ }
+}
+
+
+
+extern void free_map_objects(struct MapObj * mo_start)
+{
+ if (NULL == mo_start)
+ {
+ return;
+ }
+ free_map_objects(mo_start->owns);
+ free_map_objects(mo_start->next);
+ free(mo_start);
+}
+
+
+
+extern void own_map_object(struct MapObj ** target, struct MapObj ** source,
+ uint8_t id)
+{
+ struct MapObj * mo;
+ if (id == (*source)->id)
+ {
+ mo = * source;
+ * source = mo->next;
+ }
+ else
+ {
+ struct MapObj * penult = * source;
+ while (1)
+ {
+ if (id == penult->next->id)
+ {
+ break;
+ }
+ penult = penult->next;
+ }
+ mo = penult->next;
+ penult->next = mo->next;
+ }
+ struct MapObj ** last_ptr_ptr = target;
+ struct MapObj * mo_ptr;
+ while (NULL != * last_ptr_ptr)
+ {
+ mo_ptr = * last_ptr_ptr;
+ last_ptr_ptr = & mo_ptr->next;
+ }
+ * last_ptr_ptr = mo;
+ mo->next = NULL;
+}
+
+
+
+extern struct MapObj * get_player()
+{
+ return get_map_object(world.map_objs, 0);
+}
+
+
+
+extern struct MapObjDef * get_map_object_def(uint8_t id)
+{
+ struct MapObjDef * mod = world.map_obj_defs;
+ while (id != mod->id)
+ {
+ mod = mod->next;
+ }
+ return mod;
+}
+
+
+
+extern void set_object_position(struct MapObj * mo, struct yx_uint16 pos)
+{
+ mo->pos = pos;
+ struct MapObj * owned = mo->owns;
+ for (; owned != NULL; owned = owned->next)
+ {
+ set_object_position(owned, pos);
+ }
+}
projects / plomrogue / blobdiff