+/* 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 ChainMapObject * get_next_cmo (void *, char *, size_t, struct ChainMapObject *);
-
-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 tto map objects of type monster.
- struct Monster * monster = (struct Monster *) start;
- fputc(monster->hitpoints, file); }
-
-extern void write_map_objects (void * start, FILE * file, void (* f) (void *, FILE *) ) {
-// Write into file the map object chain starting at start, use f() for object-type specific data.
- struct ChainMapObject * cmo;
- for (cmo = start; cmo != 0; cmo = cmo->next) {
- write_uint16_bigendian(cmo->pos.y + 1, file);
- write_uint16_bigendian(cmo->pos.x + 1, file);
- fputc(cmo->name, file);
- f (cmo, 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 * monster = (struct Monster *) start;
- monster->hitpoints = fgetc(file); }
-
-static struct ChainMapObject * get_next_cmo (void * start, char * still_at_start, size_t size, struct ChainMapObject * cmo) {
-// Return pointer to map object of size "size". If first in chain ("still_at_start"), make "start" point to it.
- if (*still_at_start) {
- struct ChainMapObject * * z = start;
- cmo = malloc(size);
- * z = cmo;
- *still_at_start = 0; }
- else {
- cmo->next = malloc(size);
- cmo = cmo->next; }
- return cmo; }
-
-extern void read_map_objects (void * start, FILE * file, size_t size, void (* f) (void *, FILE *) ) {
-// Read from file chain of map objects starting at start, use f() for object-type specific data.
- struct ChainMapObject * cmo;
- uint16_t test;
- char still_at_start = 1;
- while (1) {
- test = read_uint16_bigendian(file);
- if (0 == test)
- break;
- cmo = get_next_cmo(start, &still_at_start, size, cmo);
- cmo->pos.y = test - 1;
- cmo->pos.x = read_uint16_bigendian(file) - 1;
- cmo->name = fgetc(file);
- f (cmo, file); }
- if (!still_at_start)
- cmo->next = 0; }
-
-extern void build_map_objects_monsterdata (void * start) {
-// Build data specific to map objects of type monster.
- struct Monster * monster = (struct Monster *) start;
- monster->cmo.name = 'A' + (rrand(0, 0) % 8);
- monster->hitpoints = 5; }
-
-extern void build_map_objects_itemdata (void * start) {
-// Build data speciifc to map objects of type data.
- struct Item * item = (struct Item *) start;
- item->cmo.name = '#' + (rrand(0, 0) % 4); }
-
-extern void build_map_objects (void * start, unsigned char n, size_t size, void (* f) (void *), struct Map * map) {
-// Build chain of n map objects starting at start, use f() for object-specific data.
- unsigned char i;
- struct ChainMapObject * cmo;
- char still_at_start = 1;
- for (i = 0; i < n; i++) {
- cmo = get_next_cmo(start, &still_at_start, size, cmo);
- cmo->pos = find_passable_pos(map);
- f (cmo); }
- if (!still_at_start)
- cmo->next = 0; }
-
-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->cmo.pos);
- if (yx_uint16_cmp (t, world->player->pos)) {
- update_log (world, "\nThe monster hits you.");
- 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->cmo.next) {
- if (other_monster == monster)
- continue;
- if (yx_uint16_cmp (t, other_monster->cmo.pos)) {
- update_log (world, "\nMonster bumps into monster.");
- return; } }
- if (is_passable(world->map, t))
- monster->cmo.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;
- for (monster = world->monster; monster != 0; monster = monster->cmo.next)
- if (yx_uint16_cmp (t, monster->cmo.pos)) {
- update_log (world, "\nYou hit the monster.");
- monster->hitpoints--;
- if (0 == monster->hitpoints) {
- update_log (world, "\nYou kill the monster.");
- if (world->monster == monster)
- world->monster = world->monster->cmo.next;
- else {
- struct Monster * m_prev;
- for (m_prev = world->monster; m_prev->cmo.next != monster; m_prev = m_prev->cmo.next);
- m_prev->cmo.next = monster->cmo.next; }
- free(monster); }
- turn_over (world, d);
- return; }
- char * msg = calloc(25, sizeof(char));
- 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); }
+#include <stdlib.h> /* for free(), atoi() */
+#include <stdint.h> /* for uint8_t, uint16_t */
+#include <stdio.h> /* for FILE typedef */
+#include <string.h> /* for 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 exit_err() */
+#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 = 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 = " ";
+ fpos_t pos;
+ exit_err(-1 == fgetpos(file, &pos), f_name);
+ while (try_fgets(line, linemax + 1, file, f_name))
+ {
+ struct MapObj * 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;
+ * 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)
+ {
+ struct MapObj * 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, 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++;
+ 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 ** mo_ptr_ptr = &world.map_objs;
+ for (; NULL != * mo_ptr_ptr; mo_ptr_ptr = &(*mo_ptr_ptr)->next);
+ * mo_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 ** mo_ptr_ptr = target;
+ for (; NULL != * mo_ptr_ptr; mo_ptr_ptr = &(*mo_ptr_ptr)->next);
+ * mo_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;
+ for (; 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; set_object_position(owned, pos), owned = owned->next);
+}
projects / plomrogue / blobdiff