Method collide

examples/example.cc:217–227

  }

  void collide(ex::EventManager &events) {
    for (const std::vector<Candidate> &candidates : grid) {
      for (const Candidate &left : candidates) {
        for (const Candidate &right : candidates) {
          if (left.entity == right.entity) continue;
          if (collided(left, right))
            events.emit<CollisionEvent>(left.entity, right.entity);
        }
      }
    }
  }

  float length(const sf::Vector2f &v) {
    return std::sqrt(v.x * v.x + v.y * v.y);