engine::AABBCollider Class Reference

Classes
struct	SweptResult

Public Member Functions
	AABBCollider (std::shared_ptr< AABB > aabb, float stepHeight=0.0f)
void	setWorld (std::shared_ptr< World > world)
	Sets the world for this collider.
void	setAABB (std::shared_ptr< AABB > aabb)
	Sets the AABB that will be checked for collisions against the world.
CollisionInfo	collide (glm::vec3 &moveStep, const glm::vec3 &position, float dt)
	Checks if the AABB collides with any blocks in the world.

Protected Member Functions
void	updateAABBCache (const glm::vec3 &velocity, const glm::vec3 &position)
SweptResult	swept (const glm::vec3 &velocity, const AABB &other) const
float	swept1D (int axis, float velocity, const AABB &other)
float	tryStepUp (const glm::vec3 &horizontalMove, const SweptResult &bestRes)
	Attempts to step up when hitting a horizontal obstacle.

Protected Attributes
std::shared_ptr< World >	m_world = nullptr
std::shared_ptr< AABB >	m_aabb
float	m_stepHeight
float	m_height
std::vector< AABB >	m_aabbCache
glm::ivec3	m_lastPosition
glm::vec3	m_cacheDirection
float	m_stepUpCooldown = 0.0f

Static Protected Attributes
static constexpr glm::vec3	s_checkBox {1.5f}
	The box around the AABB that will be generated, thus checked for collisions against the world.
static constexpr float	s_epsGap = std::numeric_limits<float>::epsilon() * 64.0f

Member Function Documentation

collide()

CollisionInfo AABBCollider::collide	(	glm::vec3 &	moveStep,
		const glm::vec3 &	position,
		float	dt
	)

Checks if the AABB collides with any blocks in the world.

Parameters

moveStep	The move delta or velocity of the AABB. The components will be modified to reflect the collision response.
position	The position of the AABB feet. Based on this surrounding AABBs will be generated.
dt	The delta time since the last collision check.

tryStepUp()

float AABBCollider::tryStepUp ( const glm::vec3 &  horizontalMove, const SweptResult &  bestRes  )

protected

Attempts to step up when hitting a horizontal obstacle.

Parameters

horizontalMove	The horizontal movement vector on the colliding axis
collidingBB	The AABB that was collided with

Returns

The step height if stepping is possible, -1.0f otherwise

Member Data Documentation

s_checkBox

constexpr glm::vec3 engine::AABBCollider::s_checkBox {1.5f}

staticconstexprprotected

The box around the AABB that will be generated, thus checked for collisions against the world.

Note

This box is generated by taking the AABB and adding the amount of blocks in given direction to all sides.

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The documentation for this class was generated from the following files:

• src/physics/AABBCollider.h
• src/physics/AABBCollider.cpp