Bounce!

tl;dr: Last week, I added support for making any navigation bouncy, for ensuring navigation is reversible, and for crawling on ceilings.

What happened last week?

Highlights

Similarly, I added support for specifying that any navigation should either start or end with a jump.
Implement ends_with_a_jump for all Behaviors.

I added support for configuring whether a Behavior can navigate paths that they cannot return from.
I started adding support for characters crawling on ceilings.

Add support for tracking reachable and reversibly-reachable surfaces.
Add a utility for calculating the squared distance between two AABBs.
Add support for Behavior.can_leave_start_surface and Behavior.only_navigates_reversible_paths.

Implement JumpBackAndForthBehavior.
Add support for starts_with_a_jump in RunAwayBehavior.
Add support for starts_with_a_jump for all Behaviors.
Implement CollideBehavior.ends_with_a_jump.
Fix navigation-state logic to not immediately skip a jump edge if it ends on the same surface it starts from.
Add support for making any navigation be bouncy.
Remove JumpBackAndForthBehavior.

Wrap lines that exceed 80 columns.
Disable path-pulse when "active trajectory" is disabled.
Disable origin annotation when destination annotation is disabled.
Update nav trajectory annotations to use the per-player colors rather than global framework colors.
Group character Godot-inspector property rows for colors and exclamation-mark parameters.
Add another character-log-event type for collisions.
Add an editor-inspector checkbox for quickly toggling some common player logs.
Move surface_parser and graph_parser references into the level class.
Use a new MovementParameter.__movement_params_identifier__ property to identify whether a node in a PackedScene is a MovementParameter.

I had instead been requiring MovementParameter nodes be named exactly MovementParameter, but this private property makes more sense for the consumer.

Update initial-surface-attachment to also be configurable programmatically, rather than just through a SpawnPosition.
Update initial-surface-attachment to also work with Surface on PositionAlongSurface instances, instead of just SurfaceSide.
Fix issues with initial-surface-attachment when swapping between duckling and run-away-duckling instances.

Updated my devlog Blogger custom-CSS and sidebar-widget-content in order to show links to interesting context from my sabbatical.
Mention the behavior system in the README.
Prevent ducklings from running away when close to momma.

Fix a bug with edge calculations failing when the origin and destination are at the same position.

Implement an Array splice utility function.
Add support for dynamically including extra face-left/face-right instructions during playback in order to keep the player facing the direction of motion.

Update platform-graph inspector-selector clicks to use the character from the last selected inspector item.

The inspector selector lets you click on the level to indicate which inter-surface edge you would like to open up to debug in the inspector panel.
This used to always just target edges for the default player character.
Now it will consider edges for whichever player was last selected within the inspector.

Re-enable fox collide ends_with_a_jump.
Slightly increase duckling jump-height, to fix a can't-reach-surface regression.
Fix a Sc.level-assignment bug when pre-calculating platform graphs.
Add action-handler, surface-state, movement-params, and animator support for crawling on ceilings.
Update Squirrel Away for latest framework changes, and tested some recent updates.
Fix a bug with using app base_path when saving platform-graph files.
Flip destination defaults for run-away behavior.
Update Squirrel Away players and levels for recent framework changes.
I started writing an extended series of posts on how the various layers of character-movement systems in the Surfacer framework.

🎉 Cheers!