}
static void exit_stair_message(dungeon_feature_type stair, bool /* going_up */)
{
    if (grid_is_rock_stair(stair))
        mpr("The hatch slams shut behind you.");
}
static void climb_message(dungeon_feature_type stair, bool going_up)
{
    if (grid_is_rock_stair(stair))
    {
        if (going_up)
            mpr("A mysterious force pulls you upwards.");
        else
            mpr("You slide downwards.");
    }
    else
        mpr(going_up? "You climb upwards." : "You climb downwards.");

    // Checks are done, the character is committed to moving between levels.
    exit_stair_message(stair_find, true);
    

    mpr("Entering...");

        mpr("You climb upwards.");

        climb_message(stair_find, true);

    // All checks are done, the player is on the move now.
    exit_stair_message(stair_find, false);
    

    if (!force_stair)
        mpr("Entering...");

        mpr("You climb downwards.");

        climb_message(stair_find, false);

        return ("rock staircase leading down");

        return ("escape hatch in the floor");
    case DNGN_ROCK_STAIRS_UP:
        return ("escape hatch in the ceiling");

    case DNGN_ROCK_STAIRS_UP:
        return ("rock staircase leading up");

KFEAT: 2 = rock staircase leading down
KFEAT: 4 = rock staircase leading down

KFEAT: 2 = >
KFEAT: 4 = >

KFEAT:   A = rock staircase leading down

KFEAT:   A = >

KFEAT:   X = rock staircase leading up / rock staircase leading down

KFEAT:   X = < / >

A plain door. You can close it by standing next to it and pressing 'c'.

A wooden door. You can close it by standing next to it and pressing 'c'.

A plain door. To open it, try simply walking into it, or press 'o'.

A wooden door. To open it, try simply walking into it, or press 'o'.

A rock staircase leading down

An escape hatch in the floor

A spring-loaded one-way escape hatch set in the dungeon floor,
allowing the adventurer beset by adversaries to exchange the perils of
this level for the perils of the next.

A stone staircase leading down

An escape hatch in the ceiling

A spring-loaded one-way escape hatch set in the ceiling.

A rock staircase leading up

A stone staircase leading down

            grd[you.x_pos][you.y_pos] =
                static_cast<dungeon_feature_type>( atoi(specs) );

        {
            if (const int feat = atoi(specs))
                grd[you.x_pos][you.y_pos] =
                    static_cast<dungeon_feature_type>( feat );
        }

            {
                mprf(MSGCH_DIAGNOSTICS, "Setting (%d,%d) to %s (%d)",
                     you.x_pos, you.y_pos, specs, feat);

            }