StepListener (dyn4j 4.0.0 API)

Type Parameters:

T - the PhysicsBody type

All Superinterfaces:

WorldEventListener

All Known Implementing Classes:

StepListenerAdapter
```
public interface StepListener<T extends PhysicsBody>
extends WorldEventListener
```
Listener notified before and after a simulation step by the PhysicsWorld.
Modification of the PhysicsWorld is permitted in any of these methods.

Since:

1.0.0

Version:

4.0.0

Author:

William Bittle

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`begin(TimeStep step, PhysicsWorld<T,?> world)`	Called before a simulation step is performed.
`void`	`end(TimeStep step, PhysicsWorld<T,?> world)`	Called after a simulation step has been performed.
`void`	`postSolve(TimeStep step, PhysicsWorld<T,?> world)`	Called after the world has been solved but before new contacts are found.
`void`	`updatePerformed(TimeStep step, PhysicsWorld<T,?> world)`	Called after collision detection and contact updates have been performed due to a call to the `PhysicsWorld.setUpdateRequired(boolean)` passing true.

- Method Detail
  - begin
```
void begin(TimeStep step,
           PhysicsWorld<T,?> world)
```
    Called before a simulation step is performed.
    
    Parameters:
    
    step - the step information
    
    world - the simulation PhysicsWorld
  - updatePerformed
```
void updatePerformed(TimeStep step,
                     PhysicsWorld<T,?> world)
```
    Called after collision detection and contact updates have been performed due to a call to the PhysicsWorld.setUpdateRequired(boolean) passing true.
    
    Parameters:
    
    step - the step information
    
    world - the simulation PhysicsWorld
    
    Since:
    
    3.0.1
    
    See Also:
    
    PhysicsWorld.setUpdateRequired(boolean)
  - postSolve
```
void postSolve(TimeStep step,
               PhysicsWorld<T,?> world)
```
    Called after the world has been solved but before new contacts are found.
    
    Parameters:
    
    step - the step information
    
    world - the simulation PhysicsWorld
    
    Since:
    
    3.2.0
  - end
```
void end(TimeStep step,
         PhysicsWorld<T,?> world)
```
    Called after a simulation step has been performed.
    
    Parameters:
    
    step - the step information
    
    world - the simulation PhysicsWorld