d2World Class Reference

Represents a 2D physics world. More...

#include <d2World.h>

Public Member Functions
	d2World (const d2Vec2 &gravity)
	Constructor that initializes the world with specified gravity.
	~d2World ()
	Destructor to clean up resources.
d2Body *	CreateBody (const d2Shape &shape, d2Vec2 position, real mass)
	Create a new rigid body with given shape, position, and mass.
void	DestroyBody (d2Body *body)
	Destroy a body.
d2Constraint *	CreateJoint (d2Body *bodyA, d2Body *bodyB, d2Vec2 anchorPoint)
	Create a joint between two bodies.
void	DestroyJoint (d2Constraint *joint)
	Destroy a joint.
d2Constraint *&	GetConstraints ()
	Get a reference to the list of constraints.
int32	GetConstraintCount () const
	Get the number of constraints in the world.
void	AddForce (const d2Vec2 &force)
	Add an external force to be applied to m_bodiesList.
void	AddTorque (real torque)
	Add an external torque to be applied to m_bodiesList.
void	Step (real dt, int32 posIterations=3)
	Update the world simulation by a specified time step.
void	Solve (real dt)
	Solve the world simulation by a specified time step.
void	CheckCollisions ()
	Check for collisions between m_bodiesList.
d2Body *	GetBodies () const
	Get pointer to the array of m_bodiesList.
int32	GetBodyCount () const
	Get the number of m_bodiesList in the world.
void	SetDebugDraw (d2Draw *debugDraw)
	Set the debug draw object.
void	DrawShape (const d2Body *body, const bool &mesh, const d2Color &color)
	Draw a shape.
void	DebugDraw ()
	Debug draw the world.
	d2World (const d2World &other)=delete
d2World &	operator= (const d2World &other)=delete

Public Attributes
d2Vec2	m_gravity {0.0f, -9.8f }
d2Broadphase *	broadphase
d2BlockAllocator	m_blockAllocator
d2Body *	m_bodiesList { nullptr }
int32	m_bodyCount { 0 }
d2Constraint *	m_constraints { nullptr }
int32	m_constraintCount { 0 }
d2Draw *	m_debugDraw { nullptr }

Detailed Description

Represents a 2D physics world.

Constructor & Destructor Documentation

d2World() [1/2]

d2World::d2World ( const d2Vec2 & gravity )

explicit

Constructor that initializes the world with specified gravity.

Parameters

gravity

The gravitational acceleration.

~d2World()

d2World::~d2World

(

)

Destructor to clean up resources.

d2World() [2/2]

d2World::d2World ( const d2World & other )

delete

Member Function Documentation

AddForce()

void d2World::AddForce

(

const d2Vec2 &

force

)

Add an external force to be applied to m_bodiesList.

Parameters

force

The force to be applied.

AddTorque()

void d2World::AddTorque

(

real

torque

)

Add an external torque to be applied to m_bodiesList.

Parameters

torque

The torque to be applied.

CheckCollisions()

void d2World::CheckCollisions

(

)

Check for collisions between m_bodiesList.

CreateBody()

d2Body * d2World::CreateBody	(	const d2Shape &	shape,
		d2Vec2	position,
		real	mass )

Create a new rigid body with given shape, position, and mass.

Parameters

shape	The shape of the body.
position	The initial position of the body.
mass	The mass of the body.

Returns

Pointer to the created body.

CreateJoint()

d2Constraint * d2World::CreateJoint	(	d2Body *	bodyA,
		d2Body *	bodyB,
		d2Vec2	anchorPoint )

Create a joint between two bodies.

Parameters

bodyA	The first body.
bodyB	The second body.
anchorPoint	The anchor point for the joint.

Returns

Pointer to the created joint.

DebugDraw()

void d2World::DebugDraw

(

)

Debug draw the world.

DestroyBody()

void d2World::DestroyBody

(

d2Body *

body

)

Destroy a body.

Parameters

body	The body to destroy.

Warning

This will automatically remove the body from the world, along with its shape.

DestroyJoint()

void d2World::DestroyJoint

(

d2Constraint *

joint

)

Destroy a joint.

Parameters

joint

The joint to destroy.

Warning

This will automatically remove the joint from the world.

DrawShape()

void d2World::DrawShape	(	const d2Body *	body,
		const bool &	mesh,
		const d2Color &	color )

Draw a shape.

GetBodies()

d2Body * d2World::GetBodies ( ) const

inline

Get pointer to the array of m_bodiesList.

Returns

Pointer to the array of m_bodiesList.

GetBodyCount()

int32 d2World::GetBodyCount ( ) const

inline

Get the number of m_bodiesList in the world.

Returns

The number of m_bodiesList in the world.

GetConstraintCount()

int32 d2World::GetConstraintCount ( ) const

inline

Get the number of constraints in the world.

Returns

The number of constraints in the world.

GetConstraints()

d2Constraint *& d2World::GetConstraints ( )

inline

Get a reference to the list of constraints.

Returns

Reference to the list of constraints.

operator=()

d2World & d2World::operator= ( const d2World & other )

delete

SetDebugDraw()

void d2World::SetDebugDraw

(

d2Draw *

debugDraw

)

Set the debug draw object.

Parameters

debugDraw

The debug draw object.

Solve()

void d2World::Solve

(

real

dt

)

Solve the world simulation by a specified time step.

Parameters

dt	The time step for the solve.

Step()

void d2World::Step	(	real	dt,
		int32	posIterations = 3 )

Update the world simulation by a specified time step.

Parameters

dt	The time step for the update.
posIterations	The number of position iterations for the update.

Member Data Documentation

broadphase

d2Broadphase* d2World::broadphase

Broad-phase collision detection algorithm.

m_blockAllocator

d2BlockAllocator d2World::m_blockAllocator

Memory m_blockAllocator for small objects.

m_bodiesList

d2Body* d2World::m_bodiesList { nullptr }

Array of m_bodiesList in the world.

m_bodyCount

int32 d2World::m_bodyCount { 0 }

Number of m_bodiesList in the world.

m_constraintCount

int32 d2World::m_constraintCount { 0 }

Number of constraints in the world.

m_constraints

d2Constraint* d2World::m_constraints { nullptr }

List of constraints in the world.

m_debugDraw

d2Draw* d2World::m_debugDraw { nullptr }

Debug draw object.

m_gravity

d2Vec2 d2World::m_gravity {0.0f, -9.8f }

Acceleration due to gravity.

---

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

• dura2d/d2World.h