Append _ to apply_steering and fix yield on ready

project/demos/Arrive/Arriver.gd

@@ -12,7 +12,7 @@ var _drag := 0.1
 
 func _physics_process(delta: float) -> void:
 	arrive.calculate_steering(_accel)
-	agent.apply_steering(_accel, delta)
+	agent._apply_steering(_accel, delta)
 
 
 func setup(

project/demos/AvoidCollisions/Avoider.gd

@@ -31,7 +31,7 @@ func _physics_process(delta: float) -> void:
 	target.position.y = agent.position.y + _direction.y*_radius
 	
 	priority.calculate_steering(_accel)
-	agent.apply_steering(_accel, delta)
+	agent._apply_steering(_accel, delta)
 
 
 func setup(

project/demos/Face/Turret.gd

@@ -20,7 +20,7 @@ func _ready() -> void:
 
 func _physics_process(delta: float) -> void:
 	face.calculate_steering(_accel)
-	agent.apply_steering(_accel, delta)
+	agent._apply_steering(_accel, delta)
 
 
 func _draw() -> void:

project/demos/FollowPath/PathFollower.gd

@@ -36,7 +36,7 @@ func setup(
 func _physics_process(delta: float) -> void:
 	if _valid:
 		follow.calculate_steering(_accel)
-		agent.apply_steering(_accel, delta)
+		agent._apply_steering(_accel, delta)
 
 
 func _on_Drawer_path_established(points: Array) -> void:

project/demos/GroupBehaviors/Member.gd

@@ -46,7 +46,7 @@ func _draw() -> void:
 func _physics_process(delta: float) -> void:
 	if blend:
 		blend.calculate_steering(acceleration)
-		agent.apply_steering(acceleration, delta)
+		agent._apply_steering(acceleration, delta)
 
 
 func set_neighbors(neighbor: Array) -> void:

project/demos/SeekFlee/Seeker.gd

@@ -27,4 +27,4 @@ func _physics_process(delta: float) -> void:
 	else:
 		flee.calculate_steering(accel)
 	
-	agent.apply_steering(accel, delta)
+	agent._apply_steering(accel, delta)

project/project.godot

@@ -153,6 +153,11 @@ _global_script_classes=[ {
 "class": "GSTUtils",
 "language": "GDScript",
 "path": "res://src/GSTUtils.gd"
+}, {
+"base": "EditorScript",
+"class": "ReferenceCollector",
+"language": "GDScript",
+"path": "res://ReferenceCollector.gd"
 } ]
 _global_script_class_icons={
 "GSTAgentLocation": "",
@@ -183,7 +188,8 @@ _global_script_class_icons={
 "GSTSteeringAgent": "",
 "GSTSteeringBehavior": "",
 "GSTTargetAcceleration": "",
-"GSTUtils": ""
+"GSTUtils": "",
+"ReferenceCollector": ""
 }
 
 [application]

project/src/Agents/GSTKinematicBody2DAgent.gd

@@ -4,6 +4,9 @@ extends GSTSpecializedAgent
 class_name GSTKinematicBody2DAgent
 
 
+# SLIDE uses `move_and_slide`
+# COLLIDE uses `move_and_collide`
+# POSITION changes the `global_position` directly
 enum MovementType { SLIDE, COLLIDE, POSITION }
 
 
@@ -11,17 +14,14 @@ enum MovementType { SLIDE, COLLIDE, POSITION }
 var body: KinematicBody2D setget _set_body
 
 # The type of movement the body executes
-# 
-# SLIDE uses use move_and_slide
-# COLLIDE uses move_and_collide
-# POSITION changes the global_position directly
 var movement_type: int
 
 var _last_position: Vector2
 
 
 func _init(body: KinematicBody2D, movement_type: int = MovementType.SLIDE) -> void:
-	yield(body, "ready")
+	if not body.is_inside_tree():
+		yield(body, "ready")
 	
 	self.body = body
 	self.movement_type = movement_type
@@ -31,7 +31,7 @@ func _init(body: KinematicBody2D, movement_type: int = MovementType.SLIDE) -> vo
 
 # Moves the agent's `body` by target `acceleration`.
 # tags: virtual
-func apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
+func _apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
 	_applied_steering = true
 	match movement_type:
 		MovementType.COLLIDE:

project/src/Agents/GSTKinematicBodyAgent.gd

@@ -3,7 +3,9 @@
 extends GSTSpecializedAgent
 class_name GSTKinematicBodyAgent
 
-
+# SLIDE uses `move_and_slide`
+# COLLIDE uses `move_and_collide`
+# POSITION changes the global_position directly
 enum MovementType { SLIDE, COLLIDE, POSITION }
 
 
@@ -11,17 +13,14 @@ enum MovementType { SLIDE, COLLIDE, POSITION }
 var body: KinematicBody setget _set_body
 
 # The type of movement the body executes
-# 
-# SLIDE uses use move_and_slide
-# COLLIDE uses move_and_collide
-# POSITION changes the global_position directly
 var movement_type: int
 
 var _last_position: Vector3
 
 
 func _init(body: KinematicBody, movement_type: int = MovementType.SLIDE) -> void:
-	yield(body, "ready")
+	if not body.is_inside_tree():
+		yield(body, "ready")
 	
 	self.body = body
 	self.movement_type = movement_type
@@ -31,7 +30,7 @@ func _init(body: KinematicBody, movement_type: int = MovementType.SLIDE) -> void
 
 # Moves the agent's `body` by target `acceleration`.
 # tags: virtual
-func apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
+func _apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
 	_applied_steering = true
 	match movement_type:
 		MovementType.COLLIDE:

project/src/Agents/GSTRigidBody2DAgent.gd

@@ -11,16 +11,15 @@ var _last_position: Vector2
 
 
 func _init(body: RigidBody2D) -> void:
+	if not body.is_inside_tree():
+		yield(body, "ready")
+	
 	self.body = body
-	if body.is_inside_tree():
-		body.get_tree().connect("physics_frame", self, "_on_SceneTree_frame")
-	else:
-		body.connect("ready", self, "_on_body_ready")
 
 
 # Moves the agent's `body` by target `acceleration`.
 # tags: virtual
-func apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
+func _apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
 	_applied_steering = true
 	body.apply_central_impulse(GSTUtils.to_vector2(acceleration.linear))
 	body.apply_torque_impulse(acceleration.angular)

project/src/Agents/GSTRigidBodyAgent.gd

@@ -11,16 +11,17 @@ var _last_position: Vector3
 
 
 func _init(body: RigidBody) -> void:
+	if not body.is_inside_tree():
+		yield(body, "ready")
+	
 	self.body = body
-	if body.is_inside_tree():
-		body.get_tree().connect("physics_frame", self, "_on_SceneTree_frame")
-	else:
-		body.connect("ready", self, "_on_body_ready")
+	body.get_tree().connect("physics_frame", self, "_on_SceneTree_frame")
+	
 
 
 # Moves the agent's `body` by target `acceleration`.
 # tags: virtual
-func apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
+func _apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
 	_applied_steering = true
 	body.apply_central_impulse(acceleration.linear)
 	body.apply_torque_impulse(Vector3.UP * acceleration.angular)

project/src/Agents/GSTSpecializedAgent.gd

@@ -9,12 +9,12 @@ class_name GSTSpecializedAgent
 # frame. When `false`, the user must keep those values updated.
 var calculate_velocities := true
 
-# If `true` and velocities and `calculate_velocities` is true, interpolates
+# If `true` and `calculate_velocities` is true, interpolates
 # the current linear velocity towards 0 by the `linear_drag_percentage` value.
 # Does not apply to `RigidBody` and `RigidBody2D` nodes.
 var apply_linear_drag := true
 
-# If `true` and velocities and `calculate_velocities` is true, interpolates
+# If `true` and `calculate_velocities` is true, interpolates
 # the current angular velocity towards 0 by the `angular_drag_percentage` value.
 # Does not apply to `RigidBody` and `RigidBody2D` nodes.
 var apply_angular_drag := true
@@ -36,5 +36,5 @@ var _applied_steering := false
 
 # Moves the agent's body by target `acceleration`.
 # tags: virtual
-func apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
+func _apply_steering(acceleration: GSTTargetAcceleration, delta: float) -> void:
 	pass