ElasticToActorStrategy

Using Hook's law, elastically move the camera towards the target actor.

Implements

• CameraStrategy<Actor>

Index

Constructors

• constructor

Properties

• cameraElasticity
• cameraFriction
• target

Methods

• action

Constructors

constructor

• new ElasticToActorStrategy(target: Actor, cameraElasticity: number, cameraFriction: number): ElasticToActorStrategy

• If cameraElasticity < cameraFriction < 1.0, the behavior will be a dampened spring that will slowly end at the target without bouncing If cameraFriction < cameraElasticity < 1.0, the behavior will be an oscillating spring that will over correct and bounce around the target

  ---

  Parameters

  • target: Actor

    Target actor to elastically follow

  • cameraElasticity: number

    [0 - 1.0] The higher the elasticity the more force that will drive the camera towards the target

  • cameraFriction: number

    [0 - 1.0] The higher the friction the more that the camera will resist motion towards the target

  Returns ElasticToActorStrategy

Properties

publiccameraElasticity

cameraElasticity: number

[0 - 1.0] The higher the elasticity the more force that will drive the camera towards the target

publiccameraFriction

cameraFriction: number

[0 - 1.0] The higher the friction the more that the camera will resist motion towards the target

publictarget

target: Actor

Implementation of CameraStrategy.target

Target actor to elastically follow

Methods

publicaction

• action(target: Actor, cam: Camera, _eng: Engine<any>, elapsed: number): Vector

• Implementation of CameraStrategy.action

  Camera strategies perform an action to calculate a new focus returned out of the strategy

  ---

  Parameters

  • target: Actor

    The target object to apply this camera strategy (if any)

  • cam: Camera

    The current camera implementation in excalibur running the game

  • _eng: Engine<any>

    The current engine running the game

  • elapsed: number

    The elapsed time in milliseconds since the last frame

  Returns Vector