Method initialise_fire

crawl-ref/source/beam.cc:603–705

}

void bolt::initialise_fire()
{
    // Fix some things which the tracer might have set.
    extra_range_used   = 0;
    in_explosion_phase = false;
    use_target_as_pos  = false;
    enchant_chaining_done = false;
    hit_count.clear();

    if (special_explosion != nullptr)
    {
        ASSERT(!is_explosion);
        ASSERT(special_explosion->is_explosion);
        ASSERT(special_explosion->special_explosion == nullptr);
        special_explosion->in_explosion_phase = false;
        special_explosion->use_target_as_pos  = false;
    }

    if (chose_ray)
    {
        ASSERT_IN_BOUNDS(ray.pos());

        if (source == coord_def())
            source = ray.pos();
    }

    if (target == source)
    {
        range             = 0;
        aimed_at_feet     = true;
        aimed_at_spot     = true;
        use_target_as_pos = true;
    }

    if (flavour == BEAM_VISUAL)
        affects_nothing = true;

    ASSERT_IN_BOUNDS(source);
    ASSERT_RANGE(flavour, BEAM_NONE + 1, BEAM_FIRST_PSEUDO);
    ASSERT(!drop_item || ranged_atk);
    ASSERTM(range >= 0, "beam '%s', source '%s', has range -1",
            name.c_str(),
            (source_id == MID_PLAYER ? "player" :
                          monster_by_mid(source_id) ?
                             monster_by_mid(source_id)->name(DESC_PLAIN, true) :
                          "unknown").c_str());
    ASSERT(!aimed_at_feet || source == target);

    real_flavour = flavour;

    message_cache.clear();

    // seen might be set by caller to suppress this.
    if (!seen && you.see_cell(source) && range > 0 && visible())
    {
        seen = true;
        const monster* mon = monster_at(source);