Update code reference

Proof and edit docstrings in all the base types and proximity types
Remove docstring for the _init builtin callback

project/src/Behaviors/GSTArrive.gd

@@ -14,7 +14,6 @@ var deceleration_radius: float
 var time_to_reach := 0.1
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
 	self.target = target
 

project/src/Behaviors/GSTAvoidCollisions.gd

@@ -11,7 +11,6 @@ var first_relative_position: Vector3
 var first_relative_velocity: Vector3
 
 
-# Intializes the behavior
 func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent, proximity) -> void:
 	pass
 

project/src/Behaviors/GSTBlend.gd

@@ -13,7 +13,6 @@ var _behaviors := []
 var _accel := GSTTargetAcceleration.new()
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent).(agent) -> void:
 	pass
 

project/src/Behaviors/GSTCohesion.gd

@@ -7,7 +7,6 @@ extends GSTGroupBehavior
 var center_of_mass: Vector3
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent, proximity) -> void:
 	pass
 

project/src/Behaviors/GSTEvade.gd

@@ -3,7 +3,6 @@ extends GSTPursue
 # Calculates acceleration to take an agent away from where a target agent will be.
 
 
-# Initializes the behavior
 func _init(
 		agent: GSTSteeringAgent,
 		target: GSTSteeringAgent,

project/src/Behaviors/GSTFace.gd

@@ -4,7 +4,6 @@ extends GSTMatchOrientation
 # The acceleration will attempt to arrive with zero remaining angular velocity.
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent, target) -> void:
 	pass
 

project/src/Behaviors/GSTFlee.gd

@@ -3,7 +3,6 @@ extends GSTSeek
 # Calculates acceleration to take an agent directly away from a target agent.
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent, target) -> void:
 	pass
 

project/src/Behaviors/GSTFollowPath.gd

@@ -15,7 +15,6 @@ var arrive_enabled := true
 var prediction_time := 0.0
 
 
-# Initializes the behavior
 func _init(
 		agent: GSTSteeringAgent, 
 		path: GSTPath, 

project/src/Behaviors/GSTLookWhereYouGo.gd

@@ -3,7 +3,6 @@ extends GSTMatchOrientation
 # Calculates an angular acceleration to match an agent's orientation to its direction of travel.
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent).(agent, null) -> void:
 	pass
 

project/src/Behaviors/GSTMatchOrientation.gd

@@ -14,7 +14,6 @@ var deceleration_radius: float
 var time_to_reach: float = 0.1
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
 	self.target = target
 

project/src/Behaviors/GSTPriority.gd

@@ -11,7 +11,6 @@ var last_selected_index: int
 var zero_threshold: float
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, zero_threshold := 0.001).(agent) -> void:
 	self.zero_threshold = zero_threshold
 

project/src/Behaviors/GSTPursue.gd

@@ -10,7 +10,6 @@ var target: GSTSteeringAgent
 var predict_time_max: float
 
 
-# Initializes the behavior
 func _init(
 		agent: GSTSteeringAgent,
 		target: GSTSteeringAgent,

project/src/Behaviors/GSTSeek.gd

@@ -7,7 +7,6 @@ extends GSTSteeringBehavior
 var target: GSTAgentLocation
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
 	self.target = target
 

project/src/Behaviors/GSTSeparation.gd

@@ -13,7 +13,6 @@ var decay_coefficient := 1.0
 var acceleration: GSTTargetAcceleration
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent, proximity) -> void:
 	pass
 

project/src/GSTAgentLocation.gd

@@ -1,5 +1,5 @@
 class_name GSTAgentLocation
-# Data type to represent an agent with a location and an orientation only.
+# Represents an agent with only a location and an orientation.
 
 
 # The agent's position in space.

project/src/GSTGroupBehavior.gd

@@ -1,19 +1,19 @@
 extends GSTSteeringBehavior
 class_name GSTGroupBehavior
-# Extended behavior that features a Proximity group for group-based behaviors.
+# Base type for group-based steering behaviors.
 
 
-# The group area definition that will be used to find the owning agent's neighbors
+# Container to find neighbors of the agent and apply a group behavior.
 var proximity: GSTProximity
 
 var _callback := funcref(self, "report_neighbor")
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent) -> void:
 	self.proximity = proximity
 
 
-# Internal callback for the behavior to define whether or not a member is relevant
+# Internal callback for the behavior to define whether or not a member is
+# relevant
 func report_neighbor(neighbor: GSTSteeringAgent) -> bool:
 	return false

project/src/GSTPath.gd

@@ -1,71 +1,54 @@
-extends Reference
+extends Reference class_name GSTPath
-class_name GSTPath
+# Represents a path made up of Vector3 waypoints, split into segments path
-# Represents a path made up of Vector3 waypoints, split into path segments for use by path
+# follow behaviors can use.
-# following behaviors.
 
 
-# Whether the path is a loop, or has its start and end disconnected and open ended
+# If `false`, the path loops.
 var open: bool
-# The length of the full path
+# Total length of the path.
 var length: float
 
 var _segments: Array
-
+var _nearest_point_on_segment: Vector3 var _nearest_point_on_path: Vector3
-var _nearest_point_on_segment: Vector3
-var _nearest_point_on_path: Vector3
 
 
-# Initializes and creates a path with the provided waypoints
 func _init(waypoints: Array, open := false) -> void:
-	self.open = open
+	self.open = open create_path(waypoints) _nearest_point_on_segment =
-	create_path(waypoints)
+	waypoints[0] _nearest_point_on_path = waypoints[0]
-	_nearest_point_on_segment = waypoints[0]
-	_nearest_point_on_path = waypoints[0]
 
 
-# Creates a path with the provided waypoints
+# Creates a path from a list of waypoints.
 func create_path(waypoints: Array) -> void:
 	if not waypoints or waypoints.size() < 2:
-		printerr("Waypoints cannot be null and must contain at least two (2) waypoints.")
+		printerr("Waypoints cannot be null and must contain at least two (2)
-		return
+		waypoints.") return
 
-	_segments = []
+	_segments = [] length = 0 var current: Vector3 = waypoints.front() var
-	length = 0
+	previous: Vector3
-	var current: Vector3 = waypoints.front()
-	var previous: Vector3
 
 	for i in range(1, waypoints.size(), 1):
-		previous = current
+		previous = current if i < waypoints.size():
-		if i < waypoints.size():
+			current = waypoints[i] elif open:
-			current = waypoints[i]
+			break else:
-		elif open:
+			current = waypoints[0] var segment := GSTSegment.new(previous,
-			break
+		current) length += segment.length segment.cumulative_length = length
-		else:
-			current = waypoints[0]
-		var segment := GSTSegment.new(previous, current)
-		length += segment.length
-		segment.cumulative_length = length
 		_segments.append(segment)
 
 
-# Returns the distance from the provided `agent_current_position` to the next point waypoint.
+# Returns the distance from `agent_current_position` to the next waypoint.
 func calculate_distance(agent_current_position: Vector3) -> float:
 	if _segments.size() == 0:
-		return 0.0
+		return 0.0 var smallest_distance_squared: float = INF var
-	var smallest_distance_squared: float = INF
+	nearest_segment: GSTSegment for i in range(_segments.size()):
-	var nearest_segment: GSTSegment
+		var segment: GSTSegment = _segments[i] var distance_squared :=
-	for i in range(_segments.size()):
+		_calculate_point_segment_distance_squared(
-		var segment: GSTSegment = _segments[i]
+				segment.begin, segment.end, agent_current_position
-		var distance_squared := _calculate_point_segment_distance_squared(
-				segment.begin,
-				segment.end,
-				agent_current_position
 			)
 
 		if distance_squared < smallest_distance_squared:
 			_nearest_point_on_path = _nearest_point_on_segment
-			smallest_distance_squared = distance_squared
+			smallest_distance_squared = distance_squared nearest_segment =
-			nearest_segment = segment
+			segment
 
 	var length_on_path := (
 		nearest_segment.cumulative_length -
@@ -74,23 +57,19 @@ func calculate_distance(agent_current_position: Vector3) -> float:
 	return length_on_path
 
 
-# Calculates the target position on the path based on the provided `target_distance` from the
+# Calculates a target position from the path's starting point based on the `target_distance`.
-# path's starting point.
 func calculate_target_position(target_distance: float) -> Vector3:
 	if open:
-		target_distance = clamp(target_distance, 0, length)
+		target_distance = clamp(target_distance, 0, length) else:
-	else:
 		if target_distance < 0:
-			target_distance = length + fmod(target_distance, length)
+			target_distance = length + fmod(target_distance, length) elif
-		elif target_distance > length:
+		target_distance > length:
 			target_distance = fmod(target_distance, length)
 
-	var desired_segment: GSTSegment
+	var desired_segment: GSTSegment for i in range(_segments.size()):
-	for i in range(_segments.size()):
+		var segment: GSTSegment = _segments[i] if segment.cumulative_length >=
-		var segment: GSTSegment = _segments[i]
+		target_distance:
-		if segment.cumulative_length >= target_distance:
+			desired_segment = segment break
-			desired_segment = segment
-			break
 
 	if not desired_segment:
 		desired_segment = _segments.back()
@@ -98,25 +77,25 @@ func calculate_target_position(target_distance: float) -> Vector3:
 	var distance := desired_segment.cumulative_length - target_distance
 
 	return (
-		(desired_segment.begin - desired_segment.end) *
+		(desired_segment.begin - desired_segment.end) * (distance /
-		(distance / desired_segment.length) + desired_segment.end)
+		desired_segment.length) + desired_segment.end)
 
 
-# Returns the position of the beginning point of the path
+# Returns the position of the first point on the path.
 func get_start_point() -> Vector3:
 	return _segments.front().begin
 
 
-# Returns the position of the last point of the path
+# Returns the position of the last point on the path.
 func get_end_point() -> Vector3:
 	return _segments.back().end
 
 
-func _calculate_point_segment_distance_squared(start: Vector3, end: Vector3, position: Vector3) -> float:
+func _calculate_point_segment_distance_squared(start: Vector3, end: Vector3,
-	_nearest_point_on_segment = start
+position: Vector3) -> float:
-	var start_end := end - start
+	_nearest_point_on_segment = start var start_end := end - start var
-	var start_end_length_squared := start_end.length_squared()
+	start_end_length_squared := start_end.length_squared() if
-	if start_end_length_squared != 0:
+	start_end_length_squared != 0:
 		var t = (position - start).dot(start_end) / start_end_length_squared
 		_nearest_point_on_segment += start_end * clamp(t, 0, 1)
 
@@ -124,13 +103,8 @@ func _calculate_point_segment_distance_squared(start: Vector3, end: Vector3, pos
 
 
 class GSTSegment:
-	var begin: Vector3
+	var begin: Vector3 var end: Vector3 var length: float var cumulative_length:
-	var end: Vector3
+	float
-	var length: float
-	var cumulative_length: float
-	
 
 	func _init(begin: Vector3, end: Vector3) -> void:
-		self.begin = begin
+		self.begin = begin self.end = end length = begin.distance_to(end)
-		self.end = end
-		length = begin.distance_to(end)

project/src/GSTSteeringAgent.gd

@@ -1,24 +1,28 @@
 extends GSTAgentLocation
 class_name GSTSteeringAgent
-# An extended `GSTAgentLocation` that adds velocity, speed, and size data. It is the character's
+# Adds velocity, speed, and size data to `GSTAgentLocation`.
-# responsibility to keep this information up to date for the steering toolkit to work correctly.
+#
+# It is the character's responsibility to keep this information up to date for
+# the steering toolkit to work correctly.
 
 
 # The amount of velocity to be considered effectively not moving.
 var zero_linear_speed_threshold := 0.01
-# The maximum amount of speed the agent can move at.
+# The maximum speed at which the agent can move.
 var linear_speed_max := 0.0
-# The maximum amount of acceleration that any behavior can apply to an agent.
+# The maximum amount of acceleration that any behavior can apply to the agent.
 var linear_acceleration_max := 0.0
-# The maximum amount of angular speed the agent can rotate at.
+# The maximum amount of angular speed at which the agent can rotate.
 var angular_speed_max := 0.0
-# The maximum amount of angular acceleration that any behavior can apply to an agent.
+# The maximum amount of angular acceleration that any behavior can apply to an
+# agent.
 var angular_acceleration_max := 0.0
-# The current speed in a given direction the agent is traveling at.
+# Current velocity of the agent.
 var linear_velocity := Vector3.ZERO
-# The current angular speed the agent is traveling at.
+# Current angular velocity of the agent.
 var angular_velocity := 0.0
 # The radius of the sphere that approximates the agent's size in space.
 var bounding_radius := 0.0
-# Used internally by group behaviors and proximities to mark an agent as already considered.
+# Used internally by group behaviors and proximities to mark the agent as already
+# considered.
 var tagged := false

project/src/GSTSteeringBehavior.gd

@@ -1,24 +1,25 @@
 class_name GSTSteeringBehavior
-# The base class for all steering behaviors to extend. A steering behavior calculates the linear
+# Base class for all steering behaviors.
-# and/or angular acceleration to be applied to its owning agent
 #
-# The entry point for all behaviors is the `calculate_steering` function. Everything else is
+# Steering behaviors calculate the linear and the angular acceleration to be
-# self-contained within the behavior.
+# to the agent that owns them.
+#
+# The `calculate_steering` function is the entry point for all behaviors.
+# Individual steering behaviors encapsulate the steering logic.
 
 
-# Whether this behavior is enabled. All disabled behaviors return zero amounts of acceleration.
+# If `false`, all calculations return zero amounts of acceleration.
-# Defaults to true
 var enabled := true
-# The agent on which all steering calculations are to be made.
+# The AI agent on which the steering behavior bases its calculations.
 var agent: GSTSteeringAgent
 
 
-# Initializes the behavior
 func _init(agent: GSTSteeringAgent) -> void:
 	self.agent = agent
 
 
-# Returns the `acceleration` parameter modified with the behavior's desired amount of acceleration
+# Returns the `acceleration` modified with the behavior's desired amount of
+# acceleration.
 func calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAcceleration:
 	if enabled:
 		return _calculate_steering(acceleration)

project/src/GSTTargetAcceleration.gd

@@ -1,14 +1,15 @@
 class_name GSTTargetAcceleration
-# A desired linear and angular amount of acceleration requested by the steering system.
+# A desired linear and angular amount of acceleration requested by the steering
+# system.
 
 
-# The linear amount of acceleration
+# Linear acceleration
 var linear := Vector3.ZERO
-# The angular amount of acceleration
+# Angular acceleration
 var angular := 0.0
 
 
-# Sets the linear and angular components to 0
+# Sets the linear and angular components to 0.
 func set_zero() -> void:
 	linear.x = 0.0
 	linear.y = 0.0
@@ -22,11 +23,11 @@ func add_scaled_accel(accel: GSTTargetAcceleration, scalar: float) -> void:
 	angular += accel.angular * scalar
 
 
-# Returns the squared magnitude of the linear and angular components
+# Returns the squared magnitude of the linear and angular components.
 func get_magnitude_squared() -> float:
 	return linear.length_squared() + angular * angular
 
 
-# Returns the magnitude of the linear and angular components
+# Returns the magnitude of the linear and angular components.
 func get_magnitude() -> float:
 	return sqrt(get_magnitude_squared())

project/src/GSTUtils.gd

@@ -1,8 +1,8 @@
 class_name GSTUtils
-# Useful math and vector manipulation functions to complement Godot's own.
+# Math and vector utility functions.
 
 
-# Returns the provided `vector` with its length capped to `limit`.
+# Returns the `vector` with its length capped to `limit`.
 static func clampedv3(vector: Vector3, limit: float) -> Vector3:
 	var length_squared := vector.length_squared()
 	var limit_squared := limit * limit
@@ -11,7 +11,9 @@ static func clampedv3(vector: Vector3, limit: float) -> Vector3:
 	return vector
 
 
-# Returns the provided vector as an angle in radians. This assumes orientation for 2D
+# Returns an angle in radians between the positive X axis and the `vector`.
-# agents or 3D agents that are upright and rotate around the Y axis.
+#
+# This assumes orientation for 2D agents or 3D agents that are upright and
+# rotate around the Y axis.
 static func vector_to_angle(vector: Vector3) -> float:
 	return atan2(vector.x, -vector.y)

project/src/Proximities/GSTInfiniteProximity.gd

@@ -1,12 +1,17 @@
 extends GSTProximity
 class_name GSTInfiniteProximity
-# Determines any agent that is in the specified list as being neighbors with the owner agent.
+# Determines any agent that is in the specified list as being neighbors with the
+# owner agent.
 
 
 func _init(agent: GSTSteeringAgent, agents: Array).(agent, agents) -> void:
 	pass
 
 
+# Returns a number of neighbors based on a `callback` function.
+#
+# `find_neighbors` calls `callback` for each agent in the `agents` array and
+# adds one to the count it if `callback` returns true.
 func find_neighbors(callback: FuncRef) -> int:
 	var neighbor_count := 0
 	var agent_count := agents.size()

project/src/Proximities/GSTProximity.gd

@@ -1,7 +1,6 @@
 extends Reference
 class_name GSTProximity
-# Defines a way to determine any agent that is in the specified list as being neighbors with the
+# Base container type that stores data to find the neighbors of an agent.
-# owner agent.
 
 
 var agent: GSTSteeringAgent