/**
* Update the player's knowledge of the objects on a grid in the current level
*/
void square_know_pile(struct chunk *c, int y, int x)
{
struct object *obj;
if (c != cave) return;
object_lists_check_integrity(c, player->cave);
/* Know every item on this grid, greater knowledge for the player grid */
for (obj = square_object(c, y, x); obj; obj = obj->next) {
object_see(player, obj);
if ((y == player->py) && (x == player->px)) {
object_touch(player, obj);
}
}
/* Remove known location of anything not on this grid */
obj = square_object(player->cave, y, x);
while (obj) {
struct object *next = obj->next;
assert(c->objects[obj->oidx]);
if (!square_holds_object(c, y, x, c->objects[obj->oidx])) {
struct object *original = c->objects[obj->oidx];
square_excise_object(player->cave, y, x, obj);
obj->iy = 0;
obj->ix = 0;
/* Delete objects which no longer exist anywhere */
if (obj->notice & OBJ_NOTICE_IMAGINED) {
delist_object(player->cave, obj);
object_delete(&obj);
original->known = NULL;
delist_object(c, original);
object_delete(&original);
}
}
obj = next;
}
}
/**
* Update the player's knowledge of the objects on a grid in the current level
*/
void floor_pile_know(struct chunk *c, int y, int x)
{
struct object *obj;
if (c != cave) return;
object_lists_check_integrity();
/* Know every item on this grid */
for (obj = square_object(c, y, x); obj; obj = obj->next) {
struct object *known_obj = cave_k->objects[obj->oidx];
/* Make new known objects, fully know sensed ones, relocate old ones */
if (known_obj == NULL) {
/* Make and/or list the new object */
struct object *new_obj;
/* Check whether we need to make a new one or list the old one */
if (obj->known) {
new_obj = obj->known;
} else {
new_obj = object_new();
obj->known = new_obj;
object_set_base_known(obj);
}
cave_k->objects[obj->oidx] = new_obj;
new_obj->oidx = obj->oidx;
/* Attach it to the current floor pile */
new_obj->iy = y;
new_obj->ix = x;
new_obj->number = obj->number;
if (!square_holds_object(cave_k, y, x, new_obj))
pile_insert_end(&cave_k->squares[y][x].obj, new_obj);
} else if (known_obj->kind != obj->kind) {
int iy = known_obj->iy;
int ix = known_obj->ix;
/* Make sure knowledge is correct */
assert(known_obj == obj->known);
/* Detach from any old pile (possibly the correct one) */
if (iy && ix && square_holds_object(cave_k, iy, ix, known_obj))
square_excise_object(cave_k, iy, ix, known_obj);
/* Copy over actual details */
object_set_base_known(obj);
/* Attach it to the current floor pile */
known_obj->iy = y;
known_obj->ix = x;
known_obj->held_m_idx = 0;
if (!square_holds_object(cave_k, y, x, known_obj))
pile_insert_end(&cave_k->squares[y][x].obj, known_obj);
} else if (!square_holds_object(cave_k, y, x, known_obj)) {
int iy = known_obj->iy;
int ix = known_obj->ix;
/* Make sure knowledge is correct */
assert(known_obj == obj->known);
known_obj->number = obj->number;
/* Detach from any old pile */
if (iy && ix && square_holds_object(cave_k, iy, ix, known_obj))
square_excise_object(cave_k, iy, ix, known_obj);
/* Attach it to the current floor pile */
known_obj->iy = y;
known_obj->ix = x;
known_obj->held_m_idx = 0;
pile_insert_end(&cave_k->squares[y][x].obj, known_obj);
}
}
/* Remove known location of anything not on this grid */
obj = square_object(cave_k, y, x);
while (obj) {
struct object *next = obj->next;
assert(c->objects[obj->oidx]);
if (!square_holds_object(c, y, x, c->objects[obj->oidx])) {
struct object *original = c->objects[obj->oidx];
square_excise_object(cave_k, y, x, obj);
obj->iy = 0;
obj->ix = 0;
/* Delete objects which no longer exist anywhere */
if (obj->notice & OBJ_NOTICE_IMAGINED) {
delist_object(cave_k, obj);
object_delete(&obj);
original->known = NULL;
delist_object(c, original);
object_delete(&original);
}
}
obj = next;
}
}
