libGDX 1.14.2 · com.badlogic.gdx.physics.box2d.World

Modifier and Type	Field and Description
protected final long	addr the address of the world instance
protected final LongMap<Body>	bodies all known bodies
private final Contact	contact
private long[]	contactAddrs
protected ContactFilter	contactFilter Contact filter
protected ContactListener	contactListener Contact listener
private final Array<Contact>	contacts
protected final LongMap<Fixture>	fixtures all known fixtures
protected final Pool<Body>	freeBodies pool for bodies
private final Array<Contact>	freeContacts
protected final Pool<Fixture>	freeFixtures pool for fixtures
pack-priv final Vector2	gravity
private final ContactImpulse	impulse
protected final LongMap<Joint>	joints all known joints
private final Manifold	manifold
private QueryCallback	queryCallback
private RayCastCallback	rayCastCallback
private Vector2	rayNormal
private Vector2	rayPoint
pack-priv final float[]	tmpGravity Get the global gravity vector.
private boolean	useDefaultContactFilter

Access	Constructor and Description
public	World(Vector2 the world gravity vector. gravity, boolean improve performance by not simulating inactive bodies. doSleep) Construct a world object.

Method Summary

Modifier and Type	Method and Description
private void	beginContact(long contactAddr)
public void	clearForces() Manually clear the force buffer on all bodies.
private boolean	Returns: whether the things collided contactFilter(long fixtureA, long fixtureB) Internal method called from JNI in case a contact happens
public Body	createBody(BodyDef def) Create a rigid body given a definition.
public Joint	createJoint(JointDef def) Create a joint to constrain bodies together.
private long	createProperJoint(JointDef def)
pack-priv void	deactivateBody(Body body) Internal method for body deactivation with notifying custom contact listener
public void	destroyBody(Body body) Destroy a rigid body given a definition.
pack-priv void	destroyFixture(Body body, Fixture fixture) Internal method for fixture destruction with notifying custom contact listener
public void	destroyJoint(Joint joint) Destroy a joint.
public void	dispose() Implements com.badlogic.gdx.utils.Disposable.dispose. Releases all resources of this object.
private void	endContact(long contactAddr)
public boolean	getAutoClearForces() Get the flag that controls automatic clearing of forces after each time step.
public void	getBodies(Array<Body> an Array in which to place all bodies currently in the simulation bodies)
public int	getBodyCount() Get the number of bodies.
public int	getContactCount() Get the number of contacts (each may have 0 or more contact points).
public Array<Contact>	Returns: the contact list getContactList() Returns the list of `Contact` instances produced by the last call to `step(float, int, int)`.
public int	getFixtureCount() Get the number of fixtures.
public void	getFixtures(Array<Fixture> an Array in which to place all fixtures currently in the simulation fixtures)
public Vector2	getGravity()
public int	getJointCount() Get the number of joints.
public void	getJoints(Array<Joint> an Array in which to place all joints currently in the simulation joints)
public int	getProxyCount() Get the number of broad-phase proxies.
private boolean	Returns: whether the native default ContactFilter should be used getUseDefaultContactFilter() Internal method called from JNI
public static native float	getVelocityThreshold() Returns: the global box2d velocity threshold.
public boolean	isLocked() Is the world locked (in the middle of a time step).
private native void	jniClearForces(long addr)
private native long	jniCreateBody(long addr, int type, float positionX, float positionY, float angle, float linearVelocityX, float linearVelocityY, float angularVelocity, float linearDamping, float angularDamping, boolean allowSleep, boolean awake, boolean fixedRotation, boolean bullet, boolean active, float inertiaScale)
private native long	jniCreateDistanceJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float length, float frequencyHz, float dampingRatio)
private native long	jniCreateFrictionJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float maxForce, float maxTorque)
private native long	jniCreateGearJoint(long addr, long bodyA, long bodyB, boolean collideConnected, long joint1, long joint2, float ratio)
private native long	jniCreateMotorJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float linearOffsetX, float linearOffsetY, float angularOffset, float maxForce, float maxTorque, float correctionFactor)
private native long	jniCreateMouseJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float targetX, float targetY, float maxForce, float frequencyHz, float dampingRatio)
private native long	jniCreatePrismaticJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float localAxisAX, float localAxisAY, float referenceAngle, boolean enableLimit, float lowerTranslation, float upperTranslation, boolean enableMotor, float maxMotorForce, float motorSpeed)
private native long	jniCreatePulleyJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float groundAnchorAX, float groundAnchorAY, float groundAnchorBX, float groundAnchorBY, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float lengthA, float lengthB, float ratio)
private native long	jniCreateRevoluteJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float referenceAngle, boolean enableLimit, float lowerAngle, float upperAngle, boolean enableMotor, float motorSpeed, float maxMotorTorque)
private native long	jniCreateRopeJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float maxLength)
private native long	jniCreateWeldJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float referenceAngle, float frequencyHz, float dampingRatio)
private native long	jniCreateWheelJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float localAxisAX, float localAxisAY, boolean enableMotor, float maxMotorTorque, float motorSpeed, float frequencyHz, float dampingRatio)
private native void	jniDeactivateBody(long addr, long bodyAddr)
private native void	jniDestroyBody(long addr, long bodyAddr)
private native void	jniDestroyFixture(long addr, long bodyAddr, long fixtureAddr)
private native void	jniDestroyJoint(long addr, long jointAddr)
private native void	jniDispose(long addr)
private native boolean	jniGetAutoClearForces(long addr)
private native int	jniGetBodyCount(long addr)
private native int	jniGetContactCount(long addr)
private native void	jniGetContactList(long addr, long[] contacts)
private native void	jniGetGravity(long addr, float[] gravity)
private native int	jniGetJointcount(long addr)
private native int	jniGetProxyCount(long addr)
private native boolean	jniIsLocked(long addr)
private native void	jniQueryAABB(long addr, float lowX, float lowY, float upX, float upY)
private native void	jniRayCast(long addr, float aX, float aY, float bX, float bY)
private native void	jniSetAutoClearForces(long addr, boolean flag)
private native void	jniSetContiousPhysics(long addr, boolean flag)
private native void	jniSetGravity(long addr, float gravityX, float gravityY)
private native void	jniSetWarmStarting(long addr, boolean flag)
private native void	jniStep(long addr, float timeStep, int velocityIterations, int positionIterations)
private native long	newWorld(float gravityX, float gravityY, boolean doSleep)
private void	postSolve(long contactAddr, long impulseAddr)
private void	preSolve(long contactAddr, long manifoldAddr)
public void	QueryAABB(QueryCallback a user implemented callback class. callback, float the x coordinate of the lower left corner lowerX, float the y coordinate of the lower left corner lowerY, float the x coordinate of the upper right corner upperX, float the y coordinate of the upper right corner upperY) Query the world for all fixtures that potentially overlap the provided AABB.
public void	rayCast(RayCastCallback a user implemented callback class. callback, Vector2 the ray starting point point1, Vector2 the ray ending point point2) Ray-cast the world for all fixtures in the path of the ray.
public void	rayCast(RayCastCallback a user implemented callback class. callback, float the ray starting point X point1X, float the ray starting point Y point1Y, float the ray ending point X point2X, float the ray ending point Y point2Y) Ray-cast the world for all fixtures in the path of the ray.
private boolean	reportFixture(long addr)
private float	reportRayFixture(long addr, float pX, float pY, float nX, float nY, float fraction)
public void	setAutoClearForces(boolean flag) Set flag to control automatic clearing of forces after each time step.
public void	setContactFilter(ContactFilter filter) Register a contact filter to provide specific control over collision.
public void	setContactListener(ContactListener listener) Register a contact event listener.
public void	setContinuousPhysics(boolean flag) Enable/disable continuous physics.
public void	setDestructionListener(DestructionListener listener) Register a destruction listener.
public void	setGravity(Vector2 gravity) Change the global gravity vector.
private void	setUseDefaultContactFilter(boolean use) Sets flag to tell the native code not to call the Java World class if use is true
public static native void	setVelocityThreshold(float the threshold, default 1.0f threshold) Sets the box2d velocity threshold globally, for all World instances.
public void	setWarmStarting(boolean flag) Enable/disable warm starting.
public void	step(float the amount of time to simulate, this should not vary. timeStep, int for the velocity constraint solver. velocityIterations, int for the position constraint solver. positionIterations) Take a time step.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

addr	back to summary
protected final long addr the address of the world instance

bodies	back to summary
protected final LongMap<Body> bodies all known bodies

contact	back to summary
private final Contact contact

contactAddrs	back to summary
private long[] contactAddrs

contactFilter	back to summary
protected ContactFilter contactFilter Contact filter

contactListener	back to summary
protected ContactListener contactListener Contact listener

contacts	back to summary
private final Array<Contact> contacts

fixtures	back to summary
protected final LongMap<Fixture> fixtures all known fixtures

freeBodies	back to summary
protected final Pool<Body> freeBodies pool for bodies

freeContacts	back to summary
private final Array<Contact> freeContacts

freeFixtures	back to summary
protected final Pool<Fixture> freeFixtures pool for fixtures

gravity	back to summary
pack-priv final Vector2 gravity

impulse	back to summary
private final ContactImpulse impulse

joints	back to summary
protected final LongMap<Joint> joints all known joints

manifold	back to summary
private final Manifold manifold

queryCallback	back to summary
private QueryCallback queryCallback

rayCastCallback	back to summary
private RayCastCallback rayCastCallback

rayNormal	back to summary
private Vector2 rayNormal

rayPoint	back to summary
private Vector2 rayPoint

tmpGravity	back to summary
pack-priv final float[] tmpGravity Get the global gravity vector.

useDefaultContactFilter	back to summary
private boolean useDefaultContactFilter

World	back to summary
public World(Vector2 gravity, boolean doSleep) Construct a world object. Parameters gravity:Vector2 the world gravity vector. doSleep:boolean improve performance by not simulating inactive bodies.

Method Detail

beginContact	back to summary
private void beginContact(long contactAddr)

clearForces back to summary

clearForces	back to summary
public void clearForces() Manually clear the force buffer on all bodies. By default, forces are cleared automatically after each call to Step. The default behavior is modified by calling SetAutoClearForces. The purpose of this function is to support sub-stepping. Sub-stepping is often used to maintain a fixed sized time step under a variable frame-rate. When you perform sub-stepping you will disable auto clearing of forces and instead call ClearForces after all sub-steps are complete in one pass of your game loop. `setAutoClearForces(boolean)`

public void clearForces()

Manually clear the force buffer on all bodies. By default, forces are cleared automatically after each call to Step. The default behavior is modified by calling SetAutoClearForces. The purpose of this function is to support sub-stepping. Sub-stepping is often used to maintain a fixed sized time step under a variable frame-rate. When you perform sub-stepping you will disable auto clearing of forces and instead call ClearForces after all sub-steps are complete in one pass of your game loop. setAutoClearForces(boolean)

contactFilter	back to summary
private boolean contactFilter(long fixtureA, long fixtureB) Internal method called from JNI in case a contact happens Returns:boolean whether the things collided

contactFilter

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private boolean contactFilter(long fixtureA, long fixtureB)

Internal method called from JNI in case a contact happens

Returns:boolean: whether the things collided

createBody back to summary

createBody	back to summary
public Body createBody(BodyDef def) Create a rigid body given a definition. No reference to the definition is retained. Bodies created by this method are pooled internally by the World object. They will be freed upon calling `World#destroyBody(Body)` See Also `Pool`

public Body createBody(BodyDef def)

Create a rigid body given a definition. No reference to the definition is retained. Bodies created by this method are pooled internally by the World object. They will be freed upon calling World#destroyBody(Body)

See Also: Pool

createJoint	back to summary
public Joint createJoint(JointDef def) Create a joint to constrain bodies together. No reference to the definition is retained. This may cause the connected bodies to cease colliding.

createProperJoint	back to summary
private long createProperJoint(JointDef def)

deactivateBody	back to summary
pack-priv void deactivateBody(Body body) Internal method for body deactivation with notifying custom contact listener

destroyBody	back to summary
public void destroyBody(Body body) Destroy a rigid body given a definition. No reference to the definition is retained. This function is locked during callbacks.

destroyFixture	back to summary
pack-priv void destroyFixture(Body body, Fixture fixture) Internal method for fixture destruction with notifying custom contact listener

destroyJoint	back to summary
public void destroyJoint(Joint joint) Destroy a joint. This may cause the connected bodies to begin colliding.

dispose	back to summary
public void dispose() Implements com.badlogic.gdx.utils.Disposable.dispose. Doc from com.badlogic.gdx.utils.Disposable.dispose. Releases all resources of this object.

dispose

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public void dispose()

Implements com.badlogic.gdx.utils.Disposable.dispose.

Doc from com.badlogic.gdx.utils.Disposable.dispose.

Releases all resources of this object.

endContact	back to summary
private void endContact(long contactAddr)

getAutoClearForces	back to summary
public boolean getAutoClearForces() Get the flag that controls automatic clearing of forces after each time step.

getBodies	back to summary
public void getBodies(Array<Body> bodies) Parameters bodies:Array<Body> an Array in which to place all bodies currently in the simulation

getBodyCount	back to summary
public int getBodyCount() Get the number of bodies.

getContactCount	back to summary
public int getContactCount() Get the number of contacts (each may have 0 or more contact points).

getContactList back to summary

getContactList	back to summary
public Array<Contact> getContactList() Returns the list of `Contact` instances produced by the last call to `step(float, int, int)`. Note that the returned list will have O(1) access times when using indexing. contacts are created and destroyed in the middle of a time step. Use `ContactListener` to avoid missing contacts Returns:Array<Contact> the contact list

public Array<Contact> getContactList()

Returns the list of Contact instances produced by the last call to step(float, int, int). Note that the returned list will have O(1) access times when using indexing. contacts are created and destroyed in the middle of a time step. Use ContactListener to avoid missing contacts

Returns:Array<Contact>: the contact list

getFixtureCount	back to summary
public int getFixtureCount() Get the number of fixtures.

getFixtures	back to summary
public void getFixtures(Array<Fixture> fixtures) Parameters fixtures:Array<Fixture> an Array in which to place all fixtures currently in the simulation

getGravity	back to summary
public Vector2 getGravity()

getJointCount	back to summary
public int getJointCount() Get the number of joints.

getJoints	back to summary
public void getJoints(Array<Joint> joints) Parameters joints:Array<Joint> an Array in which to place all joints currently in the simulation

getProxyCount	back to summary
public int getProxyCount() Get the number of broad-phase proxies.

getUseDefaultContactFilter	back to summary
private boolean getUseDefaultContactFilter() Internal method called from JNI Returns:boolean whether the native default ContactFilter should be used

getUseDefaultContactFilter

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private boolean getUseDefaultContactFilter()

Internal method called from JNI

Returns:boolean: whether the native default ContactFilter should be used

getVelocityThreshold	back to summary
public static native float getVelocityThreshold() Returns:float the global box2d velocity threshold.

isLocked	back to summary
public boolean isLocked() Is the world locked (in the middle of a time step).

jniClearForces	back to summary
private native void jniClearForces(long addr)

jniCreateBody	back to summary
private native long jniCreateBody(long addr, int type, float positionX, float positionY, float angle, float linearVelocityX, float linearVelocityY, float angularVelocity, float linearDamping, float angularDamping, boolean allowSleep, boolean awake, boolean fixedRotation, boolean bullet, boolean active, float inertiaScale)

jniCreateDistanceJoint	back to summary
private native long jniCreateDistanceJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float length, float frequencyHz, float dampingRatio)

jniCreateFrictionJoint	back to summary
private native long jniCreateFrictionJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float maxForce, float maxTorque)

jniCreateGearJoint	back to summary
private native long jniCreateGearJoint(long addr, long bodyA, long bodyB, boolean collideConnected, long joint1, long joint2, float ratio)

jniCreateMotorJoint	back to summary
private native long jniCreateMotorJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float linearOffsetX, float linearOffsetY, float angularOffset, float maxForce, float maxTorque, float correctionFactor)

jniCreateMouseJoint	back to summary
private native long jniCreateMouseJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float targetX, float targetY, float maxForce, float frequencyHz, float dampingRatio)

jniCreatePrismaticJoint	back to summary
private native long jniCreatePrismaticJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float localAxisAX, float localAxisAY, float referenceAngle, boolean enableLimit, float lowerTranslation, float upperTranslation, boolean enableMotor, float maxMotorForce, float motorSpeed)

jniCreatePulleyJoint	back to summary
private native long jniCreatePulleyJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float groundAnchorAX, float groundAnchorAY, float groundAnchorBX, float groundAnchorBY, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float lengthA, float lengthB, float ratio)

jniCreateRevoluteJoint	back to summary
private native long jniCreateRevoluteJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float referenceAngle, boolean enableLimit, float lowerAngle, float upperAngle, boolean enableMotor, float motorSpeed, float maxMotorTorque)

jniCreateRopeJoint	back to summary
private native long jniCreateRopeJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float maxLength)

jniCreateWeldJoint	back to summary
private native long jniCreateWeldJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float referenceAngle, float frequencyHz, float dampingRatio)

jniCreateWheelJoint	back to summary
private native long jniCreateWheelJoint(long addr, long bodyA, long bodyB, boolean collideConnected, float localAnchorAX, float localAnchorAY, float localAnchorBX, float localAnchorBY, float localAxisAX, float localAxisAY, boolean enableMotor, float maxMotorTorque, float motorSpeed, float frequencyHz, float dampingRatio)

jniDeactivateBody	back to summary
private native void jniDeactivateBody(long addr, long bodyAddr)

jniDestroyBody	back to summary
private native void jniDestroyBody(long addr, long bodyAddr)

jniDestroyFixture	back to summary
private native void jniDestroyFixture(long addr, long bodyAddr, long fixtureAddr)

jniDestroyJoint	back to summary
private native void jniDestroyJoint(long addr, long jointAddr)

jniDispose	back to summary
private native void jniDispose(long addr)

jniGetAutoClearForces	back to summary
private native boolean jniGetAutoClearForces(long addr)

jniGetBodyCount	back to summary
private native int jniGetBodyCount(long addr)

jniGetContactCount	back to summary
private native int jniGetContactCount(long addr)

jniGetContactList	back to summary
private native void jniGetContactList(long addr, long[] contacts)

jniGetGravity	back to summary
private native void jniGetGravity(long addr, float[] gravity)

jniGetJointcount	back to summary
private native int jniGetJointcount(long addr)

jniGetProxyCount	back to summary
private native int jniGetProxyCount(long addr)

jniIsLocked	back to summary
private native boolean jniIsLocked(long addr)

jniQueryAABB	back to summary
private native void jniQueryAABB(long addr, float lowX, float lowY, float upX, float upY)

jniRayCast	back to summary
private native void jniRayCast(long addr, float aX, float aY, float bX, float bY)

jniSetAutoClearForces	back to summary
private native void jniSetAutoClearForces(long addr, boolean flag)

jniSetContiousPhysics	back to summary
private native void jniSetContiousPhysics(long addr, boolean flag)

jniSetGravity	back to summary
private native void jniSetGravity(long addr, float gravityX, float gravityY)

jniSetWarmStarting	back to summary
private native void jniSetWarmStarting(long addr, boolean flag)

jniStep	back to summary
private native void jniStep(long addr, float timeStep, int velocityIterations, int positionIterations)

newWorld	back to summary
private native long newWorld(float gravityX, float gravityY, boolean doSleep)

postSolve	back to summary
private void postSolve(long contactAddr, long impulseAddr)

preSolve	back to summary
private void preSolve(long contactAddr, long manifoldAddr)

QueryAABB

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public void QueryAABB(QueryCallback callback, float lowerX, float lowerY, float upperX, float upperY)

Query the world for all fixtures that potentially overlap the provided AABB.

Parameters

callback:QueryCallback: a user implemented callback class.
lowerX:float: the x coordinate of the lower left corner
lowerY:float: the y coordinate of the lower left corner
upperX:float: the x coordinate of the upper right corner
upperY:float: the y coordinate of the upper right corner

rayCast

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public void rayCast(RayCastCallback callback, Vector2 point1, Vector2 point2)

Ray-cast the world for all fixtures in the path of the ray. The ray-cast ignores shapes that contain the starting point.

Parameters

callback:RayCastCallback: a user implemented callback class.
point1:Vector2: the ray starting point
point2:Vector2: the ray ending point

rayCast

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public void rayCast(RayCastCallback callback, float point1X, float point1Y, float point2X, float point2Y)

Ray-cast the world for all fixtures in the path of the ray. The ray-cast ignores shapes that contain the starting point.

Parameters

callback:RayCastCallback: a user implemented callback class.
point1X:float: the ray starting point X
point1Y:float: the ray starting point Y
point2X:float: the ray ending point X
point2Y:float: the ray ending point Y

reportFixture	back to summary
private boolean reportFixture(long addr)

reportRayFixture	back to summary
private float reportRayFixture(long addr, float pX, float pY, float nX, float nY, float fraction)

setAutoClearForces	back to summary
public void setAutoClearForces(boolean flag) Set flag to control automatic clearing of forces after each time step.

setContactFilter	back to summary
public void setContactFilter(ContactFilter filter) Register a contact filter to provide specific control over collision. Otherwise the default filter is used (b2_defaultFilter). The listener is owned by you and must remain in scope.

setContactListener	back to summary
public void setContactListener(ContactListener listener) Register a contact event listener. The listener is owned by you and must remain in scope.

setContinuousPhysics	back to summary
public void setContinuousPhysics(boolean flag) Enable/disable continuous physics. For testing.

setDestructionListener	back to summary
public void setDestructionListener(DestructionListener listener) Register a destruction listener. The listener is owned by you and must remain in scope.

setGravity	back to summary
public void setGravity(Vector2 gravity) Change the global gravity vector.

setUseDefaultContactFilter	back to summary
private void setUseDefaultContactFilter(boolean use) Sets flag to tell the native code not to call the Java World class if use is true

setVelocityThreshold

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public static native void setVelocityThreshold(float threshold)

Sets the box2d velocity threshold globally, for all World instances.

Parameters

threshold:float: the threshold, default 1.0f

setWarmStarting	back to summary
public void setWarmStarting(boolean flag) Enable/disable warm starting. For testing.

step

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public void step(float timeStep, int velocityIterations, int positionIterations)

Take a time step. This performs collision detection, integration, and constraint solution.

Parameters

timeStep:float: the amount of time to simulate, this should not vary.
velocityIterations:int: for the velocity constraint solver.
positionIterations:int: for the position constraint solver.

public final Class World

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail