city.cs.engine

Class CollisionEvent

java.lang.Object

java.util.EventObject

city.cs.engine.CollisionEvent

All Implemented Interfaces:

Serializable

public class CollisionEvent
extends EventObject

Event object describing the geometry and dynamics of a collision between two SolidFixtures in a World. The reporting body is the one that sent this event to all its listeners; the other body is the one it collided with. Another event giving the opposite view of the collision will be sent to all listeners attached to the other body.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Method Summary

Modifier and Type	Method and Description
float	getFriction() The combined coefficient of friction of the collision.
Vec2	getNormal() A vector of length 1 perpendicular to the line of contact, pointing toward the other body.
Body	getOtherBody() The body that collided with the reporting body for this collision event.
SolidFixture	getOtherFixture() The fixture that collided with the reporting fixture for this collision event.
Vec2	getPosition() The position of the collision.
Body	getReportingBody() The body to which this collision event is being despatched.
SolidFixture	getReportingFixture() The fixture to which this collision event is being despatched.
float	getRestitution() The combined coefficient of restitution of the collision.
Vec2	getVelocity() Velocity of the other body relative to this one.
String	toString() String representation of this event.

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

toString

public String toString()

String representation of this event.

Overrides:

toString in class EventObject

Returns:

String naming the bodies involved

getOtherBody

public Body getOtherBody()

The body that collided with the reporting body for this collision event.

Returns:

the other body for this collision event

getReportingBody

public Body getReportingBody()

The body to which this collision event is being despatched.

Returns:

the reporting body for this collision event

getOtherFixture

public SolidFixture getOtherFixture()

The fixture that collided with the reporting fixture for this collision event.

Returns:

the other fixture for this collision event

getReportingFixture

public SolidFixture getReportingFixture()

The fixture to which this collision event is being despatched.

Returns:

the reporting fixture for this collision event

getPosition

public Vec2 getPosition()

The position of the collision.

Returns:

position in world coordinates

getVelocity

public Vec2 getVelocity()

Velocity of the other body relative to this one.

Returns:

velocity vector

getNormal

public Vec2 getNormal()

A vector of length 1 perpendicular to the line of contact, pointing toward the other body.

Returns:

normal vector

getFriction

public float getFriction()

The combined coefficient of friction of the collision. This is defined as the square root of the product of the coefficients of friction of the colliding shapes.

Returns:

the friction coefficient

getRestitution

public float getRestitution()

The combined coefficient of restitution of the collision. This is defined as the larger of the coefficients of restitution of the colliding shapes.

Returns:

the restitution coefficient