/**
* Set the terrain type for a square.
*
* This should be the only function that sets terrain, apart from the savefile
* loading code.
*/
void square_set_feat(struct chunk *c, int y, int x, int feat)
{
int current_feat = c->squares[y][x].feat;
assert(c);
assert(y >= 0 && y < c->height);
assert(x >= 0 && x < c->width);
/* Track changes */
if (current_feat) c->feat_count[current_feat]--;
if (feat) c->feat_count[feat]++;
/* Make the change */
c->squares[y][x].feat = feat;
/* Make the new terrain feel at home */
if (character_dungeon) {
/* Remove traps if necessary */
if (!square_player_trap_allowed(c, y, x))
square_destroy_trap(c, y, x);
square_note_spot(c, y, x);
square_light_spot(c, y, x);
} else {
/* Make sure no incorrect wall flags set for dungeon generation */
sqinfo_off(c->squares[y][x].info, SQUARE_WALL_INNER);
sqinfo_off(c->squares[y][x].info, SQUARE_WALL_OUTER);
sqinfo_off(c->squares[y][x].info, SQUARE_WALL_SOLID);
}
}
/**
* Make a new trap of the given type. Return TRUE if successful.
*
* We choose a player trap at random if the index is not legal. This means that
* things which are not player traps must be picked by passing a valid index.
*
* This should be the only function that places traps in the dungeon
* except the savefile loading code.
*/
void place_trap(struct chunk *c, int y, int x, int t_idx, int trap_level)
{
struct trap *new_trap;
/* We've been called with an illegal index; choose a random trap */
if ((t_idx <= 0) || (t_idx >= z_info->trap_max)) {
/* Require the correct terrain */
if (!square_player_trap_allowed(c, y, x)) return;
t_idx = pick_trap(c->squares[y][x].feat, trap_level);
}
/* Failure */
if (t_idx < 0) return;
/* Allocate a new trap for this grid (at the front of the list) */
new_trap = mem_zalloc(sizeof(*new_trap));
new_trap->next = c->squares[y][x].trap;
c->squares[y][x].trap = new_trap;
/* Set the details */
new_trap->t_idx = t_idx;
new_trap->kind = &trap_info[t_idx];
new_trap->fy = y;
new_trap->fx = x;
trf_copy(new_trap->flags, trap_info[t_idx].flags);
/* Toggle on the trap marker */
sqinfo_on(c->squares[y][x].info, SQUARE_TRAP);
/* Redraw the grid */
square_light_spot(c, y, x);
}
