static bool is_safe(int x, int y)

static bool is_safe_move(int x, int y)

        // If this is an invisible critter, say we're safe to get here, but 
        // turn off travel - the result should be that the player bashes into
        // the monster and stops travelling right there. Same treatment applies
        // to mimics.
        if (!player_monster_visible(&menv[mon]) || 
                mons_is_mimic( menv[mon].type ))

        // Stop before wasting energy on plants and fungi.
        if (player_monster_visible(&menv[mon])
            && mons_class_flag( menv[mon].type, M_NO_EXP_GAIN ))

            you.running.stop();
            return true;

            return (false);

        // Stop before wasting energy on plants and fungi.
        if (mons_class_flag( menv[mon].type, M_NO_EXP_GAIN ))
            return false;

        return true;

        return (true);

    return !is_damaging_cloud(ctype);

    return (!is_damaging_cloud(ctype));

                    if (is_safe(x, y) && move_x && move_y)

                    if (is_safe_move(x, y) && move_x && move_y)

    interrupt_activity( AI_MESSAGE, channel_to_str(channel) + ":" + inf );

    if (channel != MSGCH_DIAGNOSTICS && channel != MSGCH_EQUIPMENT)
        interrupt_activity( AI_MESSAGE, channel_to_str(channel) + ":" + inf );

        "interrupt_travel = interrupt_butcher, statue, hungry, burden, monster",

        "interrupt_travel = interrupt_butcher, statue, hungry, "
                            "burden, monster, hit_monster",

    struct monsters *defender = &menv[monster_attacked];

    monsters *defender = &menv[monster_attacked];

    // We're trying to hit a monster, break out of travel/explore now.
    interrupt_activity(AI_HIT_MONSTER, defender);
    

    AI_HIT_MONSTER,                 // Player hit monster (invis or
                                    // mimic) during travel/explore.

#ifdef DEBUG_DIAGNOSTICS
    mprf(MSGCH_DIAGNOSTICS, "Activity interrupt: %s",
         activity_interrupt_name(ai));
#endif
    

    "monster", "monster_attack", "teleport"

    "monster", "monster_attack", "teleport", "hit_monster"