BroadPhaseGrid.hpp

Go to the documentation of this file.

 
#pragma once
 
#include <vector>
 
#include "CollisionBody.hpp"
 
namespace stw
{
class BroadPhaseGrid
{
public:
    BroadPhaseGrid(float minX, float maxX, float minY, float maxY, float cellSize);
 
    void Update(const std::unordered_map<std::uint64_t, CollisionBody*>& bodies);
 
    [[nodiscard]] std::vector<std::pair<std::uint64_t, std::uint64_t>> GetCollisionPairs() const;
 
private:
    std::vector<std::vector<std::vector<CollisionBody*>>> _grid;
    Vector2 _min;
    Vector2 _max;
    float _cellSize;
    std::size_t _gridWidth;
    std::size_t _gridHeight;
 
    static bool HasBeenChecked(
        const std::unordered_multimap<CollisionBody*, CollisionBody*>& checkedCollisions,
        const std::pair<CollisionBody*, CollisionBody*>& bodyPair);
};
}