roguish/collider.hpp

#pragma once
#include <vector>
#include <unordered_map>
#include "map.hpp"
#include "dinkyecs.hpp"
#include "point.hpp"

typedef std::vector<DinkyECS::Entity> EntityList;

typedef std::unordered_map<Point, DinkyECS::Entity, PointHash> PointEntityMap;

struct FoundEntities {
  bool found;
  EntityList nearby;
};

class spatial_map {
  public:
    spatial_map() {}

    void insert(Point pos, DinkyECS::Entity obj);
    void move(Point from, Point to, DinkyECS::Entity ent);
    void remove(Point pos);
    bool occupied(Point pos) const;
    FoundEntities neighbors(Point position, bool diag=false) const;

  private:
    PointEntityMap table;
};