Method getTargetSize

plugins/siege-engine.cpp:356–356

    bool hasTarget() { return is_range_valid(target); }
    bool onTarget(df::coord pos) { return is_in_range(target, pos); }
    df::coord getTargetSize() { return target.second - target.first; }

    bool isInRange(int dist) {
        return dist >= fire_range.first && dist <= fire_range.second;