Add docstring to currently implemented code.

src/Steering/AgentLocation.gd

@@ -1,5 +1,8 @@
 extends Reference
 class_name AgentLocation
+"""
+Data type to represent an agent with a location and an orientation
+"""
 
 
 var position: = Vector3.ZERO

src/Steering/Behaviors/Arrive.gd

@@ -1,5 +1,9 @@
 extends SteeringBehavior
 class_name Arrive
+"""
+Calculates acceleration to take an agent to its target's location.
+The calculation will attempt to arrive with zero remaining velocity.
+"""
 
 
 var target: AgentLocation

src/Steering/Behaviors/Evade.gd

@@ -1,5 +1,10 @@
 extends Pursue
 class_name Evade
+"""
+Calculates acceleration to take an agent away from where a target agent will be.
+
+The `max_predict_time` variable represents how far ahead to calculate the intersection point.
+"""
 
 
 func _init(agent: SteeringAgent, target: SteeringAgent, max_predict_time: = 1.0).(agent, target, max_predict_time):

src/Steering/Behaviors/Face.gd

@@ -1,5 +1,9 @@
 extends MatchOrientation
 class_name Face
+"""
+Calculates angular acceleration to rotate a target to face its target's position.
+The acceleration will attempt to arrive with zero remaining angular velocity.
+"""
 
 
 func _init(agent: SteeringAgent, target: AgentLocation).(agent, target) -> void:

src/Steering/Behaviors/Flee.gd

@@ -1,5 +1,8 @@
 extends Seek
 class_name Flee
+"""
+Calculates acceleration to take an agent directly away from a target agent.
+"""
 
 
 func _init(agent: SteeringAgent, target: AgentLocation).(agent, target) -> void:

src/Steering/Behaviors/MatchOrientation.gd

@@ -1,5 +1,9 @@
 extends SteeringBehavior
 class_name MatchOrientation
+"""
+Calculates an angular acceleration to match an agent's orientation to its target's.
+The calculation will attempt to arrive with zero remaining angular velocity.
+"""
 
 
 var target: AgentLocation

src/Steering/Behaviors/Pursue.gd

@@ -1,5 +1,10 @@
 extends SteeringBehavior
 class_name Pursue
+"""
+Calculates acceleration to take an agent to intersect with where a target agent will be.
+
+The `max_predict_time` variable represents how far ahead to calculate the intersection point.
+"""
 
 
 var target: SteeringAgent

src/Steering/Behaviors/Seek.gd

@@ -1,5 +1,8 @@
 extends SteeringBehavior
 class_name Seek
+"""
+Calculates acceleration to take an agent to a target agent's position as directly as possible
+"""
 
 
 var target: AgentLocation

src/Steering/Demos/SeekFlee/Boundary.gd

@@ -1,4 +1,7 @@
 extends StaticBody2D
+"""
+Draws the bounding box of the static body wall.
+"""
 
 
 var rect: Rect2

src/Steering/Demos/SeekFlee/Coward.gd

@@ -1,4 +1,7 @@
 extends KinematicBody2D
+"""
+AI agent that seeks to move away from the player's location as directly as possible.
+"""
 
 
 onready var radius: = ($CollisionShape2D.shape as CircleShape2D).radius
@@ -25,6 +28,9 @@ func _draw() -> void:
 
 
 func _physics_process(delta: float) -> void:
+	if not player_agent:
+		return
+	
 	_update_agent()
 	accel = flee.calculate_steering(accel)
 	

src/Steering/Demos/SeekFlee/Player.gd

@@ -1,4 +1,7 @@
 extends KinematicBody2D
+"""
+Class to control the player in basic left/right up/down movement.
+"""
 
 
 onready var _radius: = ($CollisionShape2D.shape as CircleShape2D).radius

src/Steering/Demos/SeekFlee/SeekFlee.tscn

@@ -71,10 +71,8 @@ shape = SubResource( 3 )
 [node name="SeekerSpawner" type="Node2D" parent="."]
 script = ExtResource( 2 )
 agent_scene = ExtResource( 4 )
-player = NodePath("../Player")
 
 [node name="FleeerSpawner" type="Node2D" parent="."]
 script = ExtResource( 2 )
 agent_scene = ExtResource( 6 )
-player = NodePath("../Player")
 agent_color = Color( 0.0980392, 0.886275, 0.517647, 1 )

src/Steering/Demos/SeekFlee/SeekFleeDemo.gd

@@ -1,8 +1,14 @@
 extends Node2D
+"""
+Access helper class for children to access window boundaries.
+"""
 
 
 var camera_boundaries: Rect2
 
 
 func _init() -> void:
-	camera_boundaries = Rect2(Vector2.ZERO, Vector2(ProjectSettings["display/window/size/width"], ProjectSettings["display/window/size/height"]))
+	camera_boundaries = Rect2(
+		Vector2.ZERO,
+		 Vector2(ProjectSettings["display/window/size/width"], ProjectSettings["display/window/size/height"])
+		)

src/Steering/Demos/SeekFlee/Seeker.gd

@@ -1,4 +1,7 @@
 extends KinematicBody2D
+"""
+AI agent that uses the Seek behavior to hone in on the player's location as directly as possible.
+"""
 
 
 onready var radius: = ($CollisionShape2D.shape as CircleShape2D).radius
@@ -25,6 +28,9 @@ func _draw() -> void:
 
 
 func _physics_process(delta: float) -> void:
+	if not player_agent:
+		return
+	
 	_update_agent()
 	accel = seek.calculate_steering(accel)
 	

src/Steering/Demos/SeekFlee/Spawner.gd

@@ -1,12 +1,14 @@
 extends Node2D
+"""
+Instantiates and configures a number of agent scenes within the level boundaries.
+"""
 
 
-onready var player_agent: AgentLocation = get_node(player).player_agent
+onready var player_agent: AgentLocation = owner.get_node("Player").player_agent
 
 
 export(PackedScene) var agent_scene: PackedScene
 export var agent_count: = 10
-export var player: = NodePath()
 export var min_speed: = 50.0
 export var max_speed: = 125.0
 export var agent_color: = Color.blue

src/Steering/SteeringAgent.gd

@@ -1,5 +1,8 @@
 extends AgentLocation
 class_name SteeringAgent
+"""
+Extended agent data type that adds velocity and speed data.
+"""
 
 
 var zero_linear_speed_threshold: = 0.01

src/Steering/SteeringBehavior.gd

@@ -1,5 +1,8 @@
 extends Reference
 class_name SteeringBehavior
+"""
+Base class to calculate how an AI agent steers itself.
+"""
 
 
 var enabled: = true

src/Steering/TargetAcceleration.gd

@@ -1,5 +1,8 @@
 extends Reference
 class_name TargetAcceleration
+"""
+A linear and angular amount of acceleration.
+"""
 
 
 var linear: = Vector3.ZERO