c_ptr = &cave[y][x];
/* Feature code (applying "mimic" field) */
- feat = c_ptr->mimic ? f_info[c_ptr->mimic].mimic : f_info[c_ptr->feat].mimic;
+ feat = f_info[c_ptr->mimic ? c_ptr->mimic : c_ptr->feat].mimic;
if (!is_mirror_grid(c_ptr) && (feat != FEAT_QUEST_ENTER) && (feat != FEAT_ENTRANCE))
{