Behavior adding support to actors to avoid collisions with ECBehaviorAvoidedByActor.

Behavior attaches to ECBehaviorActorMover to modify walking path while moving.

To use this behavior add it to the element class and make sure to call setShapesSphere() to set up the collision test shapes. The best time to do this is either in BehaviorElement.init() or inside BaseActorAction if you need to change them per action.

See also:

• Colliders

This behavior can be used only once on an element.

Element class properties have the prefix avoidCollision. .

Set avoid radius in meters.

• Full name: avoidCollision.radius
• Type: float
• Default Value: 0.4
• Restriction: At least 0
• Example (*.deeclass)

  <float name='avoidCollision.radius'>0.6</float>

This behavior has no events.

This behavior adds these behavior tree actions if behavior tree is present.

Set one or more force field parameters.

This is an example of using this action:

<action name='avoidCollision.set'>
  <parameter name='enabled'>true</parameter>
</action>

Stop avoiding collision.

This is an example of using this action:

<action name='avoidCollision.stop'/>

Check one or more force field parameters. Action succeeds if all parameter value matches their respective force field parameter otherwise action fails. This action is typically used as first action in a sequence to run the sequence only if a force field parameter matches (or not).

This is an example of using this action:

<sequence>
  <action name='avoidCollision.check'>
    <parameter name='avoiding'>true</parameter>
  </action>
  <!-- actions here run only if actor is avoiding a collision -->
</sequence>

This behavior adds these behavior tree conditions if behavior tree is present. If behavior has non-empty identifier replace avoidCollision with avoidCollision(id).

Check one or more force field parameters. Conditions returns true if all parameter value match their respective force field parameter. This condition is typically used to run an action or sequence of actions as long as force field conditions are true.

This is an example of using this condition:

<action name='myAction' id='doing something'>
  <parameter name='avoidCollision.avoiding'>true</parameter>
  <condition>avoidCollision.check</condition>
</action>

Same as Behavior Tree Actions.

Same as Behavior Tree Conditions.

This behavior sends these state machine events.

Avoid collision.

Stop avoiding collision.

• ECBehaviorActorMover

• ECBehaviorRideOn: Avoid while respecting ground movement.
• ECBehaviorBehaviorTree: Add actions and conditions for behavior trees to use.
• ECBehaviorStateMachine: Add actions and conditions for state machine to use and events to send to the state machine.

This behavior does support element class to be persistable (setPersistable).

ECBehaviorAvoidCollision.

Since DragonScript Module Version 1.0

• Make actor avoid elements supporting ECBehaviorAvoidedByActor.

This example defines an element which can avoid collisions.

class MyElement extends BehaviorElementClass
  public var ECBehaviorComponent component
  public var ECBehaviorCollider collider
  public var ECBehaviorColliderAI colliderAI
  public var ECBehaviorLocomotion locomotion
  public var ECBehaviorNavigator navigator
  public var ECBehaviorProjectToGround projectToGround
  public var ECBehaviorRideOn rideOn
  public var ECBehaviorActorMover actorMover
  public var ECBehaviorAvoidCollision avoidCollision
  func new()
    component = ECBehaviorComponent.new(this, null)
    collider = ECBehaviorCollider.new(this, component)
    colliderAI = ECBehaviorColliderAI.new(this, collider)
    locomotion = ECBehaviorLocomotion.new(this, colliderAI)
    navigator = ECBehaviorNavigator.new(this)
    projectToGround = ECBehaviorProjectToGround.new(this, colliderAI)
    rideOn = ECBehaviorRideOn.new(this, locomotion, projectToGround)
    actorMover = ECBehaviorActorMover.new(this, locomotion, navigator, rideOn)
    actorMover.setConversationActor(conversationActor)
    avoidCollision = ECBehaviorAvoidCollision.new(this, actorMover, rideOn)
  end
end

Using element class supporting adding behaviors the behavior can be added like this:

<?xml version='1.0' encoding='UTF-8'?>
<elementClass name='MyClass' class='GenericBehaviorElement'>
  <behavior type='ECBehaviorComponent'/>
  <behavior type='ECBehaviorCollider'/>
  <behavior type='ECBehaviorColliderAI'/>
  <behavior type='ECBehaviorLocomotion'/>
  <behavior type='ECBehaviorNavigator'/>
  <behavior type='ECBehaviorProjectToGround'/>
  <behavior type='ECBehaviorRideOn'/>
 
  <behavior type='ECBehaviorAvoidCollision'>
    <!-- optional: set collision filter. default value '3:0 1 2 3' which means
                   category BaseGameApp.CollisionFilterBit.actorAI
                   filter BaseGameApp.CollisionFilterBit.geometry,
                          BaseGameApp.CollisionFilterBit.dynamic,
                          BaseGameApp.CollisionFilterBit.actorAI.
                   format is '', 'category' or 'category:filter' where category and filter
                   are a list of bits to set. -->
    <string name='collisionFilter'>3:0 1 2 3</string>
 
    <!-- optional: use behavior tree with id instead of empty string -->
    <string name='behaviorTree'>second</string>
 
    <!-- optional: use state machine with id instead of empty string -->
    <string name='stateMachine'>second</string>
 
    <!-- set element properties. omit property prefix if used inside behavior tag -->
    <float name='.radius'>0.6</float>
  </behavior>
</elementClass>

• DEExamples Repository