Function is_leaky

plugins/aquifer.cpp:63–69

}

bool is_leaky(int16_t x, int16_t y, int16_t z) {
        return is_open(x, y, z-1) ||
            is_open(x,   y-1, z) ||
            is_open(x-1, y,   z) ||
            is_open(x+1, y,   z) ||
            is_open(x,   y+1, z);
}

bool is_leaky(const df::coord & pos) {
    return is_leaky(pos.x, pos.y, pos.z);