collision_world.hpp

Go to the documentation of this file.

 
#pragma once
 
#include "body.hpp"
#include "shape.hpp"
#include "voxel_shape_data.hpp"
 
#include <span>
 
namespace physics {
 
struct CollisionWorldView {
  std::span<const BodySlot> bodies;
  std::span<const ShapeSlot> shapes;
  std::span<const VoxelShapeSlot> voxel_shapes;
 
  [[nodiscard]]
  auto body(BodyID id) const -> const Body* {
    if (id.slot >= bodies.size()) {
      return nullptr;
    }
 
    const BodySlot& slot = bodies[id.slot];
    return slot.occupied && slot.generation == id.generation ? &slot.body : nullptr;
  }
 
  [[nodiscard]]
  auto shape(ShapeID id) const -> const Shape* {
    if (id.slot >= shapes.size()) {
      return nullptr;
    }
 
    const ShapeSlot& slot = shapes[id.slot];
    return slot.occupied && slot.generation == id.generation ? &slot.shape : nullptr;
  }
 
  [[nodiscard]]
  auto voxelData(VoxelDataID id) const -> const VoxelShapeData* {
    if (id.slot >= voxel_shapes.size()) {
      return nullptr;
    }
 
    const VoxelShapeSlot& slot = voxel_shapes[id.slot];
    return slot.generation == id.generation && slot.data.has_value() ? &slot.data.value() : nullptr;
  }
};
 
}