Function chest_trap

src/trap.c:6293–6499

only called when the player is doing something to the chest directly; returns True if chest is destroyed, False if it remains in play */

/* only called when the player is doing something to the chest directly;
   returns True if chest is destroyed, False if it remains in play */
boolean
chest_trap(
    struct obj *obj,
    int bodypart,
    boolean disarm)
{
    struct obj *otmp = obj, *otmp2;
    char buf[80];
    const char *msg;
    coord cc;

    if (get_obj_location(obj, &cc.x, &cc.y, 0)) /* might be carried */
        obj->ox = cc.x, obj->oy = cc.y;

    otmp->tknown = 0;   /* for xname(); will be set to 1 below */
    otmp->otrapped = 0; /* trap is one-shot; clear flag first in case
                         * chest kills you and ends up in bones file */
    You(disarm ? "set it off!" : "trigger a trap!");
    display_nhwindow(WIN_MESSAGE, FALSE);
    if (Luck > -13 && rn2(13 + Luck) > 7) { /* saved by luck */
        /* trap went off, but good luck prevents damage */
        switch (rn2(13)) {
        case 12:
        case 11:
            msg = "explosive charge is a dud";
            break;
        case 10:
        case 9:
            msg = "electric charge is grounded";
            break;
        case 8:
        case 7:
            msg = "flame fizzles out";
            break;
        case 6:
        case 5:
        case 4:
            msg = "poisoned needle misses";
            break;
        case 3:
        case 2:
        case 1:
        case 0:
            msg = "gas cloud blows away";
            break;
        default:
            impossible("chest disarm bug");
            msg = (char *) 0;
            break;
        }
        if (msg)
            pline("But luckily the %s!", msg);
    } else {
        switch (rn2(20) ? ((Luck >= 13) ? 0 : rn2(13 - Luck)) : rn2(26)) {
        case 25:
        case 24:
        case 23:
        case 22: