+/* map_objects.c */
+
#include "map_objects.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include "yx_uint16.h"
-#include "readwrite.h"
-#include "misc.h"
-#include "map.h"
-#include "main.h"
-
-static struct MapObj * get_next_map_obj (void *, char *, size_t, struct MapObj *);
-
-extern void readwrite_map_objects_dummy (void * dummy, FILE * file) {
-// Dummy function for calls of (write|read)_map_objects on map objects without specific attributes.
- ; }
-
-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);
- 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);
- 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.
+#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 get_linemax(), try_fopen(), try_fclose()
+ * [read/write]_uint[8/16/23][_bigendian]()
+ */
+#include "misc.h" /* for try_malloc(), try_calloc(), 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.
+ */
+static struct MapObj * get_next_map_obj(struct World * world,
+ void * start, char * first,
+ size_t size, struct MapObj * map_obj);
+
+
+
+/* Map-object-type-specific helpers to (build|write|read)_map_objects(). */
+static void build_map_objects_itemdata(struct MapObjDef * map_obj_def,
+ void * start);
+static void build_map_objects_monsterdata(struct MapObjDef * map_obj_def,
+ void * start);
+static uint8_t write_map_objects_monsterdata(void * start, FILE * file);
+static uint8_t read_map_objects_monsterdata( void * start, FILE * file);
+
+
+
+static struct MapObj * get_next_map_obj(struct World * world,
+ void * start, char * first,
+ size_t size, struct MapObj * map_obj)
+{
+ char * f_name = "get_next_map_obj()";
+ if (* first)
+ {
+ struct MapObj * * z = start;
+ map_obj = try_malloc(size, world, f_name);
+ * z = map_obj;
+ * first = 0;
+ }
+ else
+ {
+ map_obj->next = try_malloc(size, world, f_name);
+ map_obj = map_obj->next;
+ }
+ return map_obj;
+}
+
+
+
+static void build_map_objects_itemdata(struct MapObjDef * map_obj_def,
+ void * start)
+{
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; }
-
-extern struct yx_uint16 find_passable_pos (struct Map * map) {
-// Return a random passable position on map.
- struct yx_uint16 pos;
- for (pos.y = pos.x = 0; 0 == is_passable(map, pos);) {
- pos.y = rrand(0, 0) % map->size.y;
- pos.x = rrand(0, 0) % map->size.x; }
- return pos; }
-
-extern char is_passable (struct Map * map, struct yx_uint16 pos) {
-// Check if coordinate on (or beyond) map is accessible to actor movement.
- char passable = 0;
- if (0 <= pos.x && pos.x < map->size.x && 0 <= pos.y && pos.y < map->size.y)
- if ('.' == map->cells[pos.y * map->size.x + pos.x])
- passable = 1;
- return passable; }
-
-extern void move_monster (struct World * world, struct Monster * monster) {
-// Move monster in random direction, trigger fighting when hindered by player/monster.
- char d = rrand(0, 0) % 5;
- struct yx_uint16 t = mv_yx_in_dir (d, monster->map_obj.pos);
- char * msg = malloc(100);
- struct MapObjDef * mod = get_map_obj_def (world, monster->map_obj.type);
- char * desc = mod->desc;
- char * desc_other;
- if (yx_uint16_cmp (t, world->player->pos)) {
- sprintf(msg, "\nThe %s hits you.", desc);
- update_log (world, msg);
- world->player->hitpoints--;
- if (0 == world->player->hitpoints)
- update_log (world, "\nYou are dead.");
- return; }
- struct Monster * other_monster;
- for (other_monster = world->monster; other_monster != 0; other_monster = other_monster->map_obj.next) {
- if (other_monster == monster)
- continue;
- if (yx_uint16_cmp (t, other_monster->map_obj.pos)) {
- mod = get_map_obj_def (world, monster->map_obj.type);
- desc_other = mod->desc;
- sprintf(msg, "\n%s bumps into %s.", desc, desc_other);
- update_log (world, msg);
- return; } }
- free (msg);
- if (is_passable(world->map, t))
- monster->map_obj.pos = t; }
-
-extern void move_player (struct World * world, char d) {
-// Move player in direction d, update log and turn over to the enemy.
- struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
- struct Monster * monster;
- struct MapObjDef * mod;
- char * msg = calloc(100, sizeof(char));
- char * desc;
- for (monster = world->monster; monster != 0; monster = monster->map_obj.next)
- if (yx_uint16_cmp (t, monster->map_obj.pos)) {
- mod = get_map_obj_def (world, monster->map_obj.type);
- desc = mod->desc;
- sprintf (msg, "\nYou hit the %s.", desc);
- update_log (world, msg);
- monster->hitpoints--;
- if (0 == monster->hitpoints) {
- sprintf (msg, "\nYou kill the %s.", desc);
- update_log (world, msg);
- if (world->monster == monster)
- world->monster = world->monster->map_obj.next;
- else {
- struct Monster * m_prev;
- for (m_prev = world->monster; m_prev->map_obj.next != monster; m_prev = m_prev->map_obj.next);
- m_prev->map_obj.next = monster->map_obj.next; }
- free(monster); }
- turn_over (world, d);
- return; }
- char * msg_content = "You fail to move";
- char * dir;
- if (NORTH == d) dir = "north";
- else if (EAST == d) dir = "east" ;
- else if (SOUTH == d) dir = "south";
- else if (WEST == d) dir = "west" ;
- if (is_passable(world->map, t)) {
- msg_content = "You move";
- world->player->pos = t; }
- sprintf(msg, "\n%s %s.", msg_content, dir);
- update_log (world, msg);
- free(msg);
- turn_over (world, d); }
-
-extern void player_wait (struct World * world) {
-// Make player wait one turn.
- update_log (world, "\nYou wait.");
- turn_over (world, 0); }
+ i->map_obj.type = map_obj_def->id;
+}
+
+
+
+static void build_map_objects_monsterdata(struct MapObjDef * map_obj_def,
+ void * start)
+{
+ 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;
+}
+
+
+
+static uint8_t write_map_objects_monsterdata(void * start, FILE * file)
+{
+ struct Monster * m = (struct Monster *) start;
+ return write_uint8(m->hitpoints, file);
+}
+
+
+
+static uint8_t read_map_objects_monsterdata (void * start, FILE * file)
+{
+ struct Monster * m = (struct Monster *) start;
+ return read_uint8(file, &m->hitpoints);
+}
+
+
+
+extern void init_map_object_defs(struct World * world, char * filename)
+{
+ char * f_name = "init_map_object_defs()";
+ FILE * file = try_fopen(filename, "r", world, f_name);
+ uint16_t linemax = get_linemax(file, world, f_name);
+ 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[linemax + 1];
+ char * line_p;
+ char * delim = " ";
+ while (fgets(defline, linemax + 1, file))
+ {
+ mod.next = 0;
+ mod.id = atoi(strtok(defline, delim));
+ mod.m_or_i = * strtok(NULL, delim);
+ mod.mapchar = * strtok(NULL, delim);
+ if ('i' == mod.m_or_i)
+ {
+ line_p = strtok(NULL, delim);
+ }
+ else
+ {
+ md.corpse_id = atoi(strtok(NULL, delim));
+ md.hitpoints_start = atoi(strtok(NULL, delim));
+ line_p = strtok(NULL, delim);
+ }
+ mod.desc = try_calloc(strlen(line_p), sizeof(char), world, f_name);
+ memcpy(mod.desc, line_p, strlen(line_p) - 1);
+ if ('i' == mod.m_or_i)
+ {
+ id.map_obj_def = mod;
+ * p_p_id = try_malloc(sizeof(struct ItemDef), world, f_name);
+ * * p_p_id = id;
+ p_p_id = (struct ItemDef * *) * p_p_id;
+ }
+ else
+ {
+ md.map_obj_def = mod;
+ * p_p_md = try_malloc(sizeof(struct MonsterDef), world, f_name);
+ * * p_p_md = md;
+ p_p_md = (struct MonsterDef * *) * p_p_md;
+ }
+ }
+ try_fclose(file, world, f_name);
+}
+
+
+
+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 write_map_objects(struct World * world, void * start,
+ FILE * file)
+{
+ struct MapObj * map_obj;
+ struct MapObjDef * mod;
+ for (map_obj = start; map_obj != 0; map_obj = map_obj->next)
+ {
+ if ( write_uint8(map_obj->type, file)
+ || write_uint16_bigendian(map_obj->pos.y + 1, file)
+ || write_uint16_bigendian(map_obj->pos.x + 1, file))
+ {
+ return 1;
+ }
+ mod = get_map_obj_def(world, map_obj->type);
+ if ('m' == mod->m_or_i)
+ {
+ if (write_map_objects_monsterdata(map_obj, file))
+ {
+ return 1;
+ }
+ }
+ }
+ return write_uint16_bigendian(0, file);
+}
+
+
+
+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;
+ uint8_t type;
+ char first = 1;
+ long pos;
+ uint16_t read_uint16 = 0;
+ while (1)
+ {
+ pos = ftell(file);
+ if (read_uint16_bigendian(file, &read_uint16))
+ {
+ return 1;
+ }
+ if (0 == read_uint16)
+ {
+ break;
+ }
+ fseek(file, pos, SEEK_SET);
+ if (read_uint8(file, &type))
+ {
+ return 1;
+ }
+ mod = get_map_obj_def(world, type);
+ if ('m' == mod->m_or_i)
+ {
+ size = sizeof(struct Monster);
+ }
+ else
+ {
+ size = sizeof(struct Item);
+ }
+ map_obj = get_next_map_obj(world, 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))
+ {
+ return 1;
+ }
+ map_obj->pos.y--;
+ map_obj->pos.x--;
+ if ('m' == mod->m_or_i)
+ {
+ if (read_map_objects_monsterdata(map_obj, file))
+ {
+ return 1;
+ }
+ }
+ }
+ if (!first)
+ {
+ map_obj->next = 0;
+ }
+ return 0;
+}
+
+
+
+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;
+ struct MapObjDef * mod = get_map_obj_def(world, def_id);
+ size_t size = 0;
+ if ('i' == mod->m_or_i)
+ {
+ size = sizeof(struct Item);
+ }
+ else
+ {
+ size = sizeof(struct Monster);
+ }
+ for (i = 0; i < n; i++)
+ {
+ mo = get_next_map_obj(world, start, &first, size, mo);
+ exit_err(NULL == mo, world, err);
+ mo->pos = find_passable_pos(world->map);
+ if ('i' == mod->m_or_i)
+ {
+ build_map_objects_itemdata(mod, mo);
+ }
+ else
+ {
+ build_map_objects_monsterdata(mod, mo);
+ }
+
+ }
+ if (!first)
+ {
+ mo->next = 0;
+ }
+ return &mo->next;
+}
+
+
+
+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;
+ 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;
+}
projects / plomrogue / blobdiff