Excalibur 0.23.0

Thanks to @DavidLi119, @radist2s, @magnusandy, @djcsdy, and @ZuzuZain for their contributions!

Breaking Changes

• ex.Actor.scale, ex.Actor.sx/sy, ex.Actor.actions.scaleTo/scaleBy will not work as expected with new collider implementation, set width and height directly. These features will be completely removed in v0.24.0.

Added

• Add new collision group implementation (#1091, #862)
• New ex.Collider type which is the container for all collision related behavior and state. Actor is now extracted from collision.
• Added interface Clonable<T> to indicate if an object contains a clone method
• Added interface Eventable<T> to indicated if an object can emit and receive events
• ex.Vector.scale now also works with vector input
• ex.BoundingBox.fromDimension(width: number, height: number) can generate a bounding box from a width and height
• ex.BoundingBox.translate(pos: Vector) will create a new bounding box shifted by pos
• ex.BoundingBox.scale(scale: Vector) will create a new bounding box scaled by scale
• Added isActor() and isCollider() type guards
• Added ex.CollisionShape.draw collision shapes can now be drawn, actor's will use these shapes if no other drawing is specified
• Added a getClosestLineBetween method to CollisionShape's for returning the closest line between 2 shapes (#1071)

Changed

• Change ex.Actor.within to use surface of object geometry instead of the center to make judgements (#1071)

• Changed moveBy, rotateBy, and scaleBy to operate relative to the current actor position at a speed, instead of moving to an absolute by a certain time.

• Changed event handlers in excalibur to expect non-null event objects, before hander: (event?: GameEvent) => void implied that event could be null. This change addresses (#1147) making strict null/function checks compatible with new typescript.

• Changed collision system to remove actor coupling, in addition ex.Collider is a new type that encapsulates all collision behavior. Use ex.Actor.body.collider to interact with collisions in Excalibur (#1119)

  • Add new ex.Collider type that is the housing for all collision related code
    • The source of truth for ex.CollisionType is now on collider, with a convenience getter on actor
    • The collision system now operates on ex.Collider's not ex.Actor's
  • ex.CollisionType has been moved to a separate file outside of Actor
    • CollisionType is switched to a string enum, style guide also updated
  • ex.CollisionPair now operates on a pair of ex.Colliders's instead of ex.Actors's
  • ex.CollisionContact now operates on a pair of ex.Collider's instead of ex.Actors's
  • ex.Body has been modified to house all the physical position/transform information
    • Integration has been moved from actor to Body as a physical concern
    • useBoxCollision has been renamed to useBoxCollider
    • useCircleCollision has been renamed to useCircleCollider
    • usePolygonCollision has been renamed to usePolygonCollider
    • useEdgeCollision has been renamed to useEdgeCollider
  • Renamed ex.CollisionArea to ex.CollisionShape
    • ex.CircleArea has been renamed to ex.Circle
    • ex.PolygonArea has been renamed to ex.ConvexPolygon
    • ex.EdgeArea has been renamed to ex.Edge
  • Renamed getWidth() & setWidth() to property width
    • Actor and BoundingBox are affected
  • Renamed getHeight() & setHeight() to property height
    • Actor and BoundingBox are affected
  • Renamed getCenter() to the property center
    • Actor, BoundingBox, and Cell are affected
  • Renamed getBounds() to the property bounds
    • Actor, Collider, and Shapes are affected
  • Renamed getRelativeBounds() to the property localBounds
    • Actor, Collider, and Shapes are affected
  • Renamed moi() to the property inertia standing for moment of inertia
  • Renamed restition to the property bounciness
  • Moved collisionType to Actor.body.collider.type
  • Moved Actor.integrate to Actor.body.integrate

Deprecated

• Legacy groups ex.Group will be removed in v0.24.0, use collision groups as a replacement (#1091)

• Legacy collision groups off Actor will be removed in v0.24.0, use Actor.body.collider.collisionGroup (#1091)

• Removed NaiveCollisionBroadphase as it was no longer used

• Renamed methods and properties will be available until v0.24.0

• Deprecated collision attributes on actor, use Actor.body.collider

  • Actor.x & Actor.y will be removed in v0.24.0 use Actor.pos.x & Actor.pos.y
  • Actor.collisionArea will be removed in v0.24.0 use Actor.body.collider.shape
  • Actor.getLeft(), Actor.getRight(), Actor.getTop(), and Actor.getBottom are deprecated
    • Use Actor.body.collider.bounds.(left|right|top|bottom)
  • Actor.getGeometry() and Actor.getRelativeGeometry() are removed, use Collider
  • Collision related properties on Actor moved to Collider, useActor.body.collider
    • Actor.torque
    • Actor.mass
    • Actor.moi
    • Actor.friction
    • Actor.restition
  • Collision related methods on Actor moved to Collider, useActor.body.collider or Actor.body.collider.bounds
    • Actor.getSideFromIntersect(intersect) → BoundingBox.sideFromIntersection
    • Actor.collidesWithSide(actor) → Actor.body.collider.bounds.intersectWithSide
    • Actor.collides(actor) → Actor.body.collider.bounds.intersect

Fixed

• Fixed issue where leaking window/document handlers was possible when calling ex.Engine.stop() and ex.Engine.start(). (#1063)
• Fixed wrong Camera and Loader scaling on HiDPI screens when option suppressHiDPIScaling is set. (#1120)
• Fixed polyfill application by exporting a polyfill() function that can be called. (#1132)
• Fixed Color.lighten() (#1084)