Update project to follow GDScript guidelines closer

Used `var variable := 0.0` as discussed in the Godot issue, instead of
`var variable: = 0.0`.

Mostly these are minor/cosmetic changes, but I've also reorganized the
folder structure (naming of folders) to reflect our guidelines, plus
made some minor changes to the demo codes. Still work in progress.

project/assets/theme/fonts/default_font.tres

@@ -2,10 +2,7 @@
 
 [ext_resource path="res://assets/theme/fonts/montserrat/Montserrat-Medium.ttf" type="DynamicFontData" id=1]
 
-
 [resource]
-
 size = 20
 use_filter = true
 font_data = ExtResource( 1 )
-

project/assets/theme/fonts/default_font_bold.tres

@@ -2,10 +2,7 @@
 
 [ext_resource path="res://assets/theme/fonts/montserrat/Montserrat-Bold.ttf" type="DynamicFontData" id=1]
 
-
 [resource]
-
 size = 20
 use_filter = true
 font_data = ExtResource( 1 )
-

project/assets/theme/fonts/default_font_code.tres

@@ -2,10 +2,7 @@
 
 [ext_resource path="res://assets/theme/fonts/source_code_pro/SourceCodePro-Medium.otf" type="DynamicFontData" id=1]
 
-
 [resource]
-
 size = 20
 use_filter = true
 font_data = ExtResource( 1 )
-

project/assets/theme/separator/line.tres

@@ -1,7 +1,5 @@
 [gd_resource type="StyleBoxLine" format=2]
 
 [resource]
-
 color = Color( 1, 1, 1, 0.196078 )
 thickness = 2
-

project/demos/Arrive/ArriveDemo.gd

@@ -0,0 +1,71 @@
+extends Node2D
+
+
+onready var target := $Target
+onready var arriver := $Arriver
+
+export(float, 0, 2000, 40) var max_linear_speed := 800.0 setget set_max_linear_speed
+export(float, 0, 200, 1) var max_linear_acceleration := 80.0 setget set_max_linear_acceleration
+export(float, 0, 100, 0.1) var arrival_tolerance := 25.0 setget set_arrival_tolerance
+export(float, 0, 500, 10) var deceleration_radius := 125.0 setget set_deceleration_radius
+
+const COLORS := {
+	deceleration_radius = Color(0.9, 1, 0, 0.1),
+	arrival_tolerance = Color(0.5, 0.7, 0.9, 0.2)
+}
+
+
+func _ready() -> void:
+	target.position = arriver.global_position
+	arriver.setup(
+		max_linear_speed,
+		max_linear_acceleration,
+		arrival_tolerance,
+		deceleration_radius
+	)
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventMouseButton and event.button_index == BUTTON_LEFT and event.is_pressed():
+		arriver.target.position = Vector3(event.position.x, event.position.y, 0)
+		target.position = event.position
+		update()
+
+
+func _draw():
+	draw_circle(target.position, deceleration_radius, COLORS.deceleration_radius)
+	draw_circle(target.position, arrival_tolerance, COLORS.arrival_tolerance)
+
+
+func set_arrival_tolerance(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	arrival_tolerance = value
+	arriver.arrive.arrival_tolerance = value
+	update()
+
+
+func set_deceleration_radius(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	deceleration_radius = value
+	arriver.arrive.deceleration_radius = value
+	update()
+
+
+func set_max_linear_speed(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_speed = value
+	arriver.agent.max_linear_speed = value
+
+
+func set_max_linear_acceleration(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_acceleration = value
+	arriver.agent.max_linear_acceleration = value

project/demos/Arrive/ArriveDemo.tscn

@@ -0,0 +1,49 @@
+[gd_scene load_steps=6 format=2]
+
+[ext_resource path="res://demos/Arrive/Arriver.gd" type="Script" id=1]
+[ext_resource path="res://assets/theme/gdquest.theme" type="Theme" id=2]
+[ext_resource path="res://demos/Arrive/ArriveDemo.gd" type="Script" id=3]
+[ext_resource path="res://assets/sprites/small_circle.png" type="Texture" id=4]
+
+[sub_resource type="CircleShape2D" id=1]
+radius = 16.0
+
+[node name="ArriveDemo" type="Node2D"]
+script = ExtResource( 3 )
+
+[node name="Arriver" type="KinematicBody2D" parent="."]
+show_behind_parent = true
+position = Vector2( 512, 300 )
+script = ExtResource( 1 )
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Arriver"]
+shape = SubResource( 1 )
+
+[node name="Sprite" type="Sprite" parent="Arriver"]
+modulate = Color( 0.952941, 0.172549, 0.0431373, 1 )
+texture = ExtResource( 4 )
+
+[node name="Target" type="Node2D" parent="."]
+position = Vector2( 0, 1 )
+
+[node name="GUI" type="PanelContainer" parent="."]
+anchor_right = 1.0
+margin_right = 1024.0
+margin_bottom = 87.0
+rect_min_size = Vector2( 1024, 0 )
+theme = ExtResource( 2 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="MarginContainer" type="MarginContainer" parent="GUI"]
+margin_right = 1024.0
+margin_bottom = 87.0
+
+[node name="Label" type="Label" parent="GUI/MarginContainer"]
+margin_left = 16.0
+margin_top = 16.0
+margin_right = 1008.0
+margin_bottom = 71.0
+text = "Arrive Demo
+Mouse click to make the red \"Player\" move to the yellow target"

project/demos/Arrive/Arriver.gd

@@ -0,0 +1,37 @@
+extends KinematicBody2D
+
+
+var agent := GSTSteeringAgent.new()
+var target := GSTAgentLocation.new()
+var arrive := GSTArrive.new(agent, target)
+var _accel := GSTTargetAcceleration.new()
+
+var _velocity := Vector2()
+var _drag := 0.1
+
+
+func _physics_process(delta: float) -> void:
+	_update_agent()
+	_accel = arrive.calculate_steering(_accel)
+	_velocity += Vector2(_accel.linear.x, _accel.linear.y)
+	_velocity = _velocity.linear_interpolate(Vector2.ZERO, _drag).clamped(agent.max_linear_speed)
+	_velocity = move_and_slide(_velocity)
+
+
+func setup(
+	max_linear_speed: float,
+	max_linear_acceleration: float,
+	arrival_tolerance: float,
+	deceleration_radius: float
+) -> void:
+	agent.max_linear_speed = max_linear_speed
+	agent.max_linear_acceleration = max_linear_acceleration
+	agent.position = Vector3(global_position.x, global_position.y, 0)
+	arrive.deceleration_radius = deceleration_radius
+	arrive.arrival_tolerance = arrival_tolerance
+	target.position = agent.position
+
+
+func _update_agent() -> void:
+	agent.position = Vector3(global_position.x, global_position.y, 0)
+	agent.linear_velocity = Vector3(_velocity.x, _velocity.y, 0)

project/demos/Face/FaceDemo.gd

@@ -0,0 +1,63 @@
+extends Node2D
+
+
+onready var player := $Player
+onready var gui := $GUI
+onready var turret := $Turret
+
+export(int, 0, 359) var max_angular_speed := 90 setget set_max_angular_speed
+export(int, 0, 359) var max_angular_accel := 5 setget set_max_angular_accel
+export(int, 0, 180) var align_tolerance := 5 setget set_align_tolerance
+export(int, 0, 359) var deceleration_radius := 45 setget set_deceleration_radius
+export(float, 0, 1000) var player_speed := 600.0 setget set_player_speed
+
+
+func _ready() -> void:
+	player.speed = player_speed
+	turret.setup(
+		player.agent,
+		deg2rad(align_tolerance),
+		deg2rad(deceleration_radius),
+		deg2rad(max_angular_accel),
+		deg2rad(max_angular_speed)
+	)
+
+
+func set_align_tolerance(value: int) -> void:
+	if not is_inside_tree():
+		return
+	
+	align_tolerance = value
+	turret.face.alignment_tolerance = deg2rad(value)
+
+
+func set_deceleration_radius(value: int) -> void:
+	if not is_inside_tree():
+		return
+	
+	deceleration_radius = value
+	turret.face.deceleration_radius = deg2rad(value)
+
+
+func set_max_angular_accel(value: int) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_angular_accel = value
+	turret.agent.max_angular_acceleration = deg2rad(value)
+
+
+func set_max_angular_speed(value: int) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_angular_speed = value
+	turret.agent.max_angular_speed = deg2rad(value)
+
+
+func set_player_speed(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	player_speed = value
+	player.speed = player_speed

project/demos/Face/FaceDemo.tscn

@@ -1,10 +1,11 @@
-[gd_scene load_steps=8 format=2]
+[gd_scene load_steps=9 format=2]
 
-[ext_resource path="res://demos/face/Turret.gd" type="Script" id=1]
-[ext_resource path="res://demos/face/FaceDemo.gd" type="Script" id=2]
-[ext_resource path="res://demos/face/Player.gd" type="Script" id=3]
+[ext_resource path="res://demos/Face/Turret.gd" type="Script" id=1]
+[ext_resource path="res://demos/Face/FaceDemo.gd" type="Script" id=2]
+[ext_resource path="res://demos/Face/Player.gd" type="Script" id=3]
 [ext_resource path="res://assets/sprites/large_circle.png" type="Texture" id=4]
 [ext_resource path="res://assets/sprites/small_circle.png" type="Texture" id=5]
+[ext_resource path="res://assets/theme/gdquest.theme" type="Theme" id=6]
 
 [sub_resource type="CircleShape2D" id=1]
 radius = 16.0
@@ -30,7 +31,7 @@ modulate = Color( 0.945098, 0.215686, 0.0705882, 1 )
 texture = ExtResource( 5 )
 
 [node name="Turret" type="KinematicBody2D" parent="."]
-position = Vector2( 512, 150 )
+position = Vector2( 512, 286.288 )
 script = ExtResource( 1 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="Turret"]
@@ -39,3 +40,23 @@ shape = SubResource( 2 )
 [node name="Sprite" type="Sprite" parent="Turret"]
 modulate = Color( 0.137255, 0.866667, 0.647059, 1 )
 texture = ExtResource( 4 )
+
+[node name="GUI" type="PanelContainer" parent="."]
+margin_right = 1024.0
+margin_bottom = 14.0
+theme = ExtResource( 6 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="MarginContainer" type="MarginContainer" parent="GUI"]
+margin_right = 1024.0
+margin_bottom = 87.0
+
+[node name="Label" type="Label" parent="GUI/MarginContainer"]
+margin_left = 16.0
+margin_top = 16.0
+margin_right = 1008.0
+margin_bottom = 71.0
+text = "Face Demo
+Move the player around with WASD and notice the turret orient itself"

project/demos/Face/Player.gd

@@ -0,0 +1,22 @@
+extends KinematicBody2D
+
+
+var speed: float
+
+onready var agent := GSTAgentLocation.new()
+
+
+func _physics_process(delta: float) -> void:
+	var movement := _get_movement()
+	move_and_slide(movement * speed)
+	_update_agent()
+
+
+func _get_movement() -> Vector2:
+	return Vector2(
+			Input.get_action_strength("sf_right") - Input.get_action_strength("sf_left"),
+			Input.get_action_strength("sf_down")  - Input.get_action_strength("sf_up"))
+
+
+func _update_agent() -> void:
+	agent.position = Vector3(global_position.x, global_position.y, 0)

project/demos/Face/Turret.gd

@@ -0,0 +1,46 @@
+extends KinematicBody2D
+
+
+var face: GSTFace
+var agent := GSTSteeringAgent.new()
+
+var _accel := GSTTargetAcceleration.new()
+var _angular_drag := 0.01
+var _cannon: Rect2
+
+onready var collision_shape := $CollisionShape2D
+
+
+func _ready() -> void:
+	var radius = collision_shape.shape.radius
+	_cannon = Rect2(Vector2(-5, 0), Vector2(10, -radius*2))
+
+
+func _physics_process(delta: float) -> void:
+	_accel = face.calculate_steering(_accel)
+	agent.angular_velocity += _accel.angular
+	agent.angular_velocity = lerp(agent.angular_velocity, 0, _angular_drag)
+	agent.orientation += agent.angular_velocity * delta
+	rotation = agent.orientation
+
+
+func _draw() -> void:
+	draw_rect(_cannon, Color.cadetblue)
+
+
+func setup(
+	player_agent: GSTAgentLocation,
+	align_tolerance: float,
+	deceleration_radius: float,
+	max_angular_accel: float,
+	max_angular_speed: float
+) -> void:
+	face = GSTFace.new(agent, player_agent)
+	
+	face.alignment_tolerance = align_tolerance
+	face.deceleration_radius = deceleration_radius
+	
+	agent.max_angular_acceleration = max_angular_accel
+	agent.max_angular_speed = max_angular_speed
+	agent.position = Vector3(global_position.x, global_position.y, 0)
+

project/demos/GroupBehaviors/GroupBehaviorsDemo.gd

@@ -0,0 +1,68 @@
+extends Node2D
+
+
+onready var spawner := $Spawner
+
+export var max_linear_speed := 100.0 setget set_max_linear_speed
+export var max_linear_accel := 25.0 setget set_max_linear_accel
+export var proximity_radius := 140.0 setget set_proximity_radius
+export var show_proximity_radius := true setget set_show_proximity_radius
+export var separation_decay_coefficient := 2000.0 setget set_separation_decay_coef
+export var cohesion_strength := 0.3 setget set_cohesion_strength
+export var separation_strength := 1.5 setget set_separation_strength
+
+
+func set_max_linear_speed(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_speed = value
+	spawner.set_max_linear_speed(value)
+
+
+func set_max_linear_accel(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_accel = value
+	spawner.set_max_linear_accel(value)
+
+
+func set_proximity_radius(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	proximity_radius = value
+	spawner.set_proximity_radius(value)
+
+
+func set_show_proximity_radius(value: bool) -> void:
+	if not is_inside_tree():
+		return
+	
+	show_proximity_radius = value
+	spawner.set_show_proximity_radius(value)
+
+
+func set_separation_decay_coef(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	separation_decay_coefficient = value
+	spawner.set_separation_decay_coef(value)
+
+
+func set_cohesion_strength(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	cohesion_strength = value
+	spawner.set_cohesion_strength(value)
+
+
+func set_separation_strength(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	separation_strength = value
+	spawner.set_separation_strength(value)

project/demos/GroupBehaviors/GroupBehaviorsDemo.tscn

@@ -0,0 +1,13 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://demos/GroupBehaviors/Member.tscn" type="PackedScene" id=1]
+[ext_resource path="res://demos/GroupBehaviors/Spawner.gd" type="Script" id=2]
+[ext_resource path="res://demos/GroupBehaviors/GroupBehaviorsDemo.gd" type="Script" id=3]
+
+[node name="GroupBehaviorsDemo" type="Node2D"]
+script = ExtResource( 3 )
+
+[node name="Spawner" type="Node2D" parent="."]
+position = Vector2( 512, 300 )
+script = ExtResource( 2 )
+member = ExtResource( 1 )

project/demos/GroupBehaviors/Member.gd

@@ -1,16 +1,16 @@
 extends KinematicBody2D
 
 
-var agent: = GSTSteeringAgent.new()
+var agent := GSTSteeringAgent.new()
 var separation: GSTSeparation
 var cohesion: GSTCohesion
 var proximity: GSTRadiusProximity
-var blend: = GSTBlend.new(agent)
-var acceleration: = GSTTargetAcceleration.new()
-var draw_proximity: = false
+var blend := GSTBlend.new(agent)
+var acceleration := GSTTargetAcceleration.new()
+var draw_proximity := false
 
-var _color: = Color.red
-var _velocity: = Vector2()
+var _color := Color.red
+var _velocity := Vector2()
 
 
 func setup(
@@ -53,6 +53,6 @@ func set_neighbors(neighbor: Array) -> void:
 
 
 func update_agent() -> void:
-	var current_position: = global_position
+	var current_position := global_position
 	agent.position.x = current_position.x
 	agent.position.y = current_position.y

project/demos/GroupBehaviors/Member.tscn

@@ -1,8 +1,9 @@
 [gd_scene load_steps=4 format=2]
 
-[ext_resource path="res://demos/group_behaviors/Member.gd" type="Script" id=1]
+[ext_resource path="res://demos/GroupBehaviors/Member.gd" type="Script" id=1]
 [ext_resource path="res://assets/sprites/small_circle.png" type="Texture" id=2]
 
+
 [sub_resource type="CircleShape2D" id=1]
 radius = 16.0
 

project/demos/GroupBehaviors/Spawner.gd

@@ -5,9 +5,9 @@ export var member: PackedScene
 
 
 func _ready() -> void:
-	var followers: = []
+	var followers := []
 	for i in range(19):
-		var follower: = member.instance()
+		var follower := member.instance()
 		add_child(follower)
 		follower.position += Vector2(rand_range(-60, 60), rand_range(-60, 60))
 		followers.append(follower)
@@ -22,7 +22,7 @@ func _ready() -> void:
 		if i == 0 and owner.show_proximity_radius:
 			follower.draw_proximity = true
 			follower.update()
-	var agents: = []
+	var agents := []
 	for i in followers:
 		agents.append(i.agent)
 	for i in followers:

project/demos/PursueSeek/BoundaryManager.gd

@@ -2,10 +2,10 @@ extends Node2D
 # Wraps the ships' positions around the world border, and controls their rendering clones.
 
 
-onready var ShipType: = preload("res://demos/pursue_vs_seek/Ship.gd")
-onready var ships: = [$Player, $Pursuer, $Seeker]
+onready var ShipType := preload("res://demos/PursueSeek/Ship.gd")
+onready var ships := [$Player, $Pursuer, $Seeker]
 
-var _clones: = {}
+var _clones := {}
 var _world_bounds: Vector2
 
 
@@ -17,10 +17,10 @@ func _ready() -> void:
 	
 	for i in range(ships.size()):
 		var ship: Node2D = ships[i]
-		var world_pos: = ship.position
+		var world_pos := ship.position
 		
 		for i in range(3):
-			var ship_clone: = ShipType.new()
+			var ship_clone := ShipType.new()
 			
 			ship_clone.position.x = world_pos.x if i == 1 else (world_pos.x - _world_bounds.x)
 			ship_clone.position.y = world_pos.y if i == 0 else (world_pos.y - _world_bounds.y)

project/demos/PursueSeek/Player.gd

@@ -1,22 +1,22 @@
-extends "res://demos/pursue_vs_seek/Ship.gd"
+extends "res://demos/PursueSeek/Ship.gd"
 # Controls the player ship's movements based on player input.
 
 
-onready var agent: = GSTSteeringAgent.new()
+onready var agent := GSTSteeringAgent.new()
 
-export var thruster_strength: = 250.0
-export var side_thruster_strength: = 10.0
-export var max_velocity: = 300.0
-export var max_angular_velocity: = 2.0
-export var angular_drag: = 0.025
-export var linear_drag: = 0.025
+export var thruster_strength := 250.0
+export var side_thruster_strength := 10.0
+export var max_velocity := 300.0
+export var max_angular_velocity := 2.0
+export var angular_drag := 0.025
+export var linear_drag := 0.025
 
-var _linear_velocity: = Vector2()
-var _angular_velocity: = 0.0
+var _linear_velocity := Vector2()
+var _angular_velocity := 0.0
 
 
 func _physics_process(delta: float) -> void:
-	var movement: = _get_movement()
+	var movement := _get_movement()
 	_angular_velocity = _calculate_angular_velocity(
 		movement.x,
 		_angular_velocity,
@@ -50,7 +50,7 @@ func _calculate_angular_velocity(
 		ship_drag: float,
 		delta: float) -> float:
 	
-	var velocity: = clamp(
+	var velocity := clamp(
 		current_velocity + thruster_strength * horizontal_movement * delta,
 		-max_velocity,
 		max_velocity
@@ -70,13 +70,13 @@ func _calculate_linear_velocity(
 		max_speed: float,
 		delta: float) -> Vector2:
 	
-	var actual_strength: = 0.0
+	var actual_strength := 0.0
 	if vertical_movement > 0:
 		actual_strength = strength
 	elif vertical_movement < 0:
 		actual_strength = -strength/1.5
 	
-	var velocity: = current_velocity + facing_direction * actual_strength * delta
+	var velocity := current_velocity + facing_direction * actual_strength * delta
 	velocity = velocity.linear_interpolate(Vector2.ZERO, ship_drag_coefficient)
 	
 	return velocity.clamped(max_speed)

project/demos/PursueSeek/PursueVSSeekDemo.gd

@@ -0,0 +1,35 @@
+extends Node2D
+
+
+onready var pursuer := $BoundaryManager/Pursuer
+onready var seeker := $BoundaryManager/Seeker
+
+export(float, 0, 2000, 40) var max_linear_speed := 200.0 setget set_max_linear_speed
+export(float, 0, 200, 1) var max_linear_accel := 10.0 setget set_max_linear_accel
+export(float, 0, 5, 0.1) var predict_time := 2.0 setget set_predict_time
+
+
+func set_max_linear_speed(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_speed = value
+	pursuer.agent.max_linear_speed = value
+	seeker.agent.max_linear_speed = value
+
+
+func set_max_linear_accel(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	max_linear_accel = value
+	pursuer.agent.max_linear_acceleration = value
+	seeker.agent.max_linear_acceleration = value
+
+
+func set_predict_time(value: float) -> void:
+	if not is_inside_tree():
+		return
+	
+	predict_time = value
+	pursuer._behavior.max_predict_time = value

project/demos/PursueSeek/PursueVSSeekDemo.tscn

@@ -1,9 +1,9 @@
 [gd_scene load_steps=6 format=2]
 
-[ext_resource path="res://demos/pursue_vs_seek/Pursuer.gd" type="Script" id=1]
-[ext_resource path="res://demos/pursue_vs_seek/Player.gd" type="Script" id=2]
-[ext_resource path="res://demos/pursue_vs_seek/BoundaryManager.gd" type="Script" id=3]
-[ext_resource path="res://demos/pursue_vs_seek/PursueVSSeekDemo.gd" type="Script" id=4]
+[ext_resource path="res://demos/PursueSeek/Pursuer.gd" type="Script" id=1]
+[ext_resource path="res://demos/PursueSeek/Player.gd" type="Script" id=2]
+[ext_resource path="res://demos/PursueSeek/BoundaryManager.gd" type="Script" id=3]
+[ext_resource path="res://demos/PursueSeek/PursueVSSeekDemo.gd" type="Script" id=4]
 [ext_resource path="res://assets/sprites/triangle.png" type="Texture" id=6]
 
 [node name="PursueVSSeekDemo" type="Node2D"]

project/demos/PursueSeek/Pursuer.gd

@@ -1,9 +1,9 @@
-extends "res://demos/pursue_vs_seek/Ship.gd"
+extends "res://demos/PursueSeek/Ship.gd"
 # Represents a ship that chases after the player.
 
 
-onready var agent: = GSTSteeringAgent.new()
-onready var accel: = GSTTargetAcceleration.new()
+onready var agent := GSTSteeringAgent.new()
+onready var accel := GSTTargetAcceleration.new()
 onready var player_agent: GSTSteeringAgent = owner.find_node("Player", true, false).agent
 
 export var use_seek: bool = false
@@ -11,10 +11,10 @@ export var use_seek: bool = false
 var _orient_behavior: GSTSteeringBehavior
 var _behavior: GSTSteeringBehavior
 
-var _linear_velocity: = Vector2()
-var _linear_drag_coefficient: = 0.025
-var _angular_velocity: = 0.0
-var _angular_drag: = 1.0
+var _linear_velocity := Vector2()
+var _linear_drag_coefficient := 0.025
+var _angular_velocity := 0.0
+var _angular_drag := 1.0
 
 
 func _ready() -> void:

project/demos/SeekFlee/Boundary.gd

@@ -6,7 +6,7 @@ var rect: Rect2
 
 
 func _ready() -> void:
-	var extents: = ($CollisionShape2D.shape as RectangleShape2D).extents
+	var extents := ($CollisionShape2D.shape as RectangleShape2D).extents
 	rect = Rect2(-extents, extents*2)
 
 

project/demos/SeekFlee/Player.gd

@@ -2,9 +2,9 @@ extends KinematicBody2D
 # Class to control the player in basic left/right up/down movement.
 
 
-onready var agent: = GSTAgentLocation.new()
+onready var agent := GSTAgentLocation.new()
 
-export var speed: = 200.0
+export var speed := 200.0
 
 
 func _get_movement() -> Vector2:
@@ -13,7 +13,7 @@ func _get_movement() -> Vector2:
 
 
 func _physics_process(delta: float) -> void:
-	var movement: = _get_movement()
+	var movement := _get_movement()
 	if movement.length_squared() < 0.01:
 		return
 	

project/demos/SeekFlee/SeekFleeDemo.gd

@@ -4,17 +4,17 @@ extends Node2D
 
 enum Mode { FLEE, SEEK }
 
-export(Mode) var behavior_mode: = Mode.SEEK setget set_behavior_mode
-export(float, 0, 2000, 40) var max_linear_speed: = 200.0 setget set_max_linear_speed
-export(float, 0, 500, 0.5) var max_linear_accel: = 10.0 setget set_max_linear_accel
+export(Mode) var behavior_mode := Mode.SEEK setget set_behavior_mode
+export(float, 0, 2000, 40) var max_linear_speed := 200.0 setget set_max_linear_speed
+export(float, 0, 500, 0.5) var max_linear_accel := 10.0 setget set_max_linear_accel
+
+var camera_boundaries: Rect2
 
 onready var player: KinematicBody2D = $Player
 onready var spawner: Node2D = $Spawner
 
-var camera_boundaries: Rect2
 
-
-func _init() -> void:
+func _ready() -> void:
 	camera_boundaries = Rect2(
 		Vector2.ZERO,
 		Vector2(
@@ -22,14 +22,12 @@ func _init() -> void:
 			ProjectSettings["display/window/size/height"]
 			)
 		)
-
-
-func _ready() -> void:
-	var rng: = RandomNumberGenerator.new()
+	
+	var rng := RandomNumberGenerator.new()
 	rng.randomize()
 	
 	for i in range(spawner.entity_count):
-		var new_pos: = Vector2(
+		var new_pos := Vector2(
 				rng.randf_range(-camera_boundaries.size.x/2, camera_boundaries.size.x/2),
 				rng.randf_range(-camera_boundaries.size.y/2, camera_boundaries.size.y/2)
 		)
@@ -42,29 +40,32 @@ func _ready() -> void:
 
 
 func set_behavior_mode(mode: int) -> void:
-	behavior_mode = mode
+	if not is_inside_tree():
+		return
 	
-	if spawner:
-		match mode:
-			Mode.SEEK:
-				for child in spawner.get_children():
-					child.use_seek = true
-			Mode.FLEE:
-				for child in spawner.get_children():
-					child.use_seek = false
+	behavior_mode = mode
+	match mode:
+		Mode.SEEK:
+			for child in spawner.get_children():
+				child.use_seek = true
+		Mode.FLEE:
+			for child in spawner.get_children():
+				child.use_seek = false
 
 
 func set_max_linear_speed(value: float) -> void:
-	max_linear_speed = value
+	if not is_inside_tree():
+		return
 	
-	if spawner:
-		for child in spawner.get_children():
-			child.agent.max_linear_speed = value
+	max_linear_speed = value
+	for child in spawner.get_children():
+		child.agent.max_linear_speed = value
 
 
 func set_max_linear_accel(value: float) -> void:
-	max_linear_accel = value
+	if not is_inside_tree():
+		return
 	
-	if spawner:
-		for child in spawner.get_children():
-			child.agent.max_linear_acceleration = value
+	max_linear_accel = value
+	for child in spawner.get_children():
+		child.agent.max_linear_acceleration = value

project/demos/SeekFlee/SeekFleeDemo.tscn

@@ -1,10 +1,10 @@
 [gd_scene load_steps=10 format=2]
 
-[ext_resource path="res://demos/seek_and_flee/Boundary.gd" type="Script" id=1]
-[ext_resource path="res://demos/seek_and_flee/Player.gd" type="Script" id=2]
-[ext_resource path="res://demos/seek_and_flee/SeekFleeDemo.gd" type="Script" id=3]
-[ext_resource path="res://demos/seek_and_flee/Spawner.gd" type="Script" id=4]
-[ext_resource path="res://demos/seek_and_flee/Seeker.tscn" type="PackedScene" id=6]
+[ext_resource path="res://demos/SeekFlee/Boundary.gd" type="Script" id=1]
+[ext_resource path="res://demos/SeekFlee/Player.gd" type="Script" id=2]
+[ext_resource path="res://demos/SeekFlee/SeekFleeDemo.gd" type="Script" id=3]
+[ext_resource path="res://demos/SeekFlee/Spawner.gd" type="Script" id=4]
+[ext_resource path="res://demos/SeekFlee/Seeker.tscn" type="PackedScene" id=6]
 [ext_resource path="res://assets/sprites/large_circle.png" type="Texture" id=7]
 
 [sub_resource type="CircleShape2D" id=1]

project/demos/SeekFlee/Seeker.gd

@@ -2,16 +2,16 @@ extends KinematicBody2D
 # AI agent that uses the Seek behavior to hone in on the player's location as directly as possible.
 
 
-onready var agent: = GSTSteeringAgent.new()
-onready var accel: = GSTTargetAcceleration.new()
-onready var seek: = GSTSeek.new(agent, player_agent)
-onready var flee: = GSTFlee.new(agent, player_agent)
+onready var agent := GSTSteeringAgent.new()
+onready var accel := GSTTargetAcceleration.new()
+onready var seek := GSTSeek.new(agent, player_agent)
+onready var flee := GSTFlee.new(agent, player_agent)
 
 var player_agent: GSTAgentLocation
-var velocity: = Vector2.ZERO
+var velocity := Vector2.ZERO
 var start_speed: float
 var start_accel: float
-var use_seek: = true
+var use_seek := true
 
 
 func _ready() -> void:

project/demos/SeekFlee/Seeker.tscn

@@ -1,8 +1,9 @@
 [gd_scene load_steps=4 format=2]
 
-[ext_resource path="res://demos/seek_and_flee/Seeker.gd" type="Script" id=1]
+[ext_resource path="res://demos/SeekFlee/Seeker.gd" type="Script" id=1]
 [ext_resource path="res://assets/sprites/small_circle.png" type="Texture" id=2]
 
+
 [sub_resource type="CircleShape2D" id=1]
 radius = 16.0
 

project/demos/SeekFlee/Spawner.gd

@@ -3,5 +3,5 @@ extends Node2D
 
 
 export(PackedScene) var Entity: PackedScene
-export var entity_count: = 10
-export var entity_color: = Color.blue
+export var entity_count:= 10
+export var entity_color:= Color.blue

project/demos/arrive/ArriveDemo.gd

@@ -1,39 +0,0 @@
-extends Node2D
-
-
-onready var target: = $Target
-onready var arriver: = $Arriver
-onready var gui: = $GUI
-
-export(float, 0, 2000, 40) var max_linear_speed: = 200.0 setget set_max_linear_speed
-export(float, 0, 200, 1) var max_linear_accel: = 25.0 setget set_max_linear_accel
-export(float, 0, 100, 0.1) var arrival_tolerance: = 20.0 setget set_arrival_tolerance
-export(float, 0, 500, 10) var deceleration_radius: = 200.0 setget set_deceleration_radius
-
-
-func _ready() -> void:
-	target.position = arriver.global_position
-
-
-func set_arrival_tolerance(value: float) -> void:
-	arrival_tolerance = value
-	if arriver:
-		arriver.arrive.arrival_tolerance = value
-
-
-func set_deceleration_radius(value: float) -> void:
-	deceleration_radius = value
-	if arriver:
-		arriver.arrive.deceleration_radius = value
-
-
-func set_max_linear_speed(value: float) -> void:
-	max_linear_speed = value
-	if arriver:
-		arriver.agent.max_linear_speed = value
-
-
-func set_max_linear_accel(value: float) -> void:
-	max_linear_accel = value
-	if arriver:
-		arriver.agent.max_linear_acceleration = value

project/demos/arrive/ArriveDemo.tscn

@@ -1,35 +0,0 @@
-[gd_scene load_steps=6 format=2]
-
-[ext_resource path="res://demos/arrive/Arriver.gd" type="Script" id=1]
-[ext_resource path="res://demos/arrive/ArriveDemo.gd" type="Script" id=2]
-[ext_resource path="res://assets/sprites/large_circle.png" type="Texture" id=3]
-[ext_resource path="res://assets/sprites/small_circle.png" type="Texture" id=4]
-
-[sub_resource type="CircleShape2D" id=1]
-radius = 16.0
-
-[node name="ArriveDemo" type="Node2D"]
-script = ExtResource( 2 )
-max_linear_speed = 400.0
-max_linear_accel = 50.0
-arrival_tolerance = 10.0
-deceleration_radius = 80.0
-
-[node name="Arriver" type="KinematicBody2D" parent="."]
-position = Vector2( 512, 300 )
-script = ExtResource( 1 )
-
-[node name="CollisionShape2D" type="CollisionShape2D" parent="Arriver"]
-shape = SubResource( 1 )
-
-[node name="Sprite" type="Sprite" parent="Arriver"]
-modulate = Color( 0.952941, 0.172549, 0.0431373, 1 )
-texture = ExtResource( 4 )
-
-[node name="Target" type="Sprite" parent="."]
-modulate = Color( 0.827451, 1, 0, 0.501961 )
-texture = ExtResource( 3 )
-
-[node name="Sprite" type="Sprite" parent="Target"]
-scale = Vector2( 0.5, 0.5 )
-texture = ExtResource( 4 )

project/demos/arrive/Arriver.gd

@@ -1,40 +0,0 @@
-extends KinematicBody2D
-
-
-onready var agent: = GSTSteeringAgent.new()
-onready var target: = GSTAgentLocation.new()
-onready var arrive: = GSTArrive.new(agent, target)
-var _accel: = GSTTargetAcceleration.new()
-
-var _velocity: = Vector2()
-var _drag: = 0.1
-
-
-func _ready() -> void:
-	agent.max_linear_speed = owner.max_linear_speed
-	agent.max_linear_acceleration = owner.max_linear_accel
-	agent.position = Vector3(global_position.x, global_position.y, 0)
-	arrive.deceleration_radius = owner.deceleration_radius
-	arrive.arrival_tolerance = owner.arrival_tolerance
-	target.position = agent.position
-
-
-func _unhandled_input(event: InputEvent) -> void:
-	if event is InputEventMouseButton:
-		var mb: InputEventMouseButton = event
-		if mb.button_index == BUTTON_LEFT and mb.pressed:
-			target.position = Vector3(mb.position.x, mb.position.y, 0)
-			owner.target.position = mb.position
-
-
-func _physics_process(delta: float) -> void:
-	_update_agent()
-	_accel = arrive.calculate_steering(_accel)
-	_velocity += Vector2(_accel.linear.x, _accel.linear.y)
-	_velocity = _velocity.linear_interpolate(Vector2.ZERO, _drag).clamped(agent.max_linear_speed)
-	_velocity = move_and_slide(_velocity)
-
-
-func _update_agent() -> void:
-	agent.position = Vector3(global_position.x, global_position.y, 0)
-	agent.linear_velocity = Vector3(_velocity.x, _velocity.y, 0)

project/demos/face/FaceDemo.gd

@@ -1,44 +0,0 @@
-extends Node2D
-
-
-onready var player: = $Player
-onready var gui: = $GUI
-onready var turret: = $Turret
-
-export(int, 0, 359, 1) var max_angular_speed: = 90 setget set_max_angular_speed
-export(int, 0, 359, 1) var max_angular_accel: = 5 setget set_max_angular_accel
-export(int, 0, 180, 1) var align_tolerance: = 5 setget set_align_tolerance
-export(int, 0, 359, 1) var deceleration_radius: = 45 setget set_deceleration_radius
-
-
-func _ready() -> void:
-	turret.setup(
-			deg2rad(align_tolerance),
-			deg2rad(deceleration_radius),
-			deg2rad(max_angular_accel),
-			deg2rad(max_angular_speed)
-		)
-
-
-func set_align_tolerance(value: int) -> void:
-	align_tolerance = value
-	if turret:
-		turret._face.alignment_tolerance = deg2rad(value)
-
-
-func set_deceleration_radius(value: int) -> void:
-	deceleration_radius = value
-	if turret:
-		turret._face.deceleration_radius = deg2rad(value)
-
-
-func set_max_angular_accel(value: int) -> void:
-	max_angular_accel = value
-	if turret:
-		turret._agent.max_angular_acceleration = deg2rad(value)
-
-
-func set_max_angular_speed(value: int) -> void:
-	max_angular_speed = value
-	if turret:
-		turret._agent.max_angular_speed = deg2rad(value)

project/demos/face/Player.gd

@@ -1,21 +0,0 @@
-extends KinematicBody2D
-
-
-onready var agent: = GSTAgentLocation.new()
-
-export var speed: = 125.0
-
-
-func _physics_process(delta: float) -> void:
-	var movement: = _get_movement()
-	move_and_slide(movement * speed)
-	_update_agent()
-
-
-func _get_movement() -> Vector2:
-	return Vector2(	Input.get_action_strength("sf_right") - Input.get_action_strength("sf_left"),
-					Input.get_action_strength("sf_down")  - Input.get_action_strength("sf_up"))
-
-
-func _update_agent() -> void:
-	agent.position = Vector3(global_position.x, global_position.y, 0)

project/demos/face/Turret.gd

@@ -1,59 +0,0 @@
-extends KinematicBody2D
-
-
-onready var collision_shape: = $CollisionShape2D
-
-var _cannon: Rect2
-
-var _agent: = GSTSteeringAgent.new()
-var _accel: = GSTTargetAcceleration.new()
-
-var _angular_velocity: = 0.0
-var _angular_drag: = 0.01
-var _face: GSTFace
-
-
-func _ready() -> void:
-	var radius = collision_shape.shape.radius
-	_cannon = Rect2(Vector2(-5, 0), Vector2(10, -radius*2))
-
-
-func _draw() -> void:
-	draw_rect(_cannon, Color.blue)
-
-
-func _physics_process(delta: float) -> void:
-	if not _face:
-		return
-	
-	_accel = _face.calculate_steering(_accel)
-	_angular_velocity += _accel.angular
-	
-	_angular_velocity = lerp(_angular_velocity, 0, _angular_drag)
-	
-	rotation += _angular_velocity * delta
-	
-	_update_agent()
-
-
-func setup(
-		align_tolerance: float,
-		deceleration_radius: float,
-		max_angular_accel: float,
-		max_angular_speed: float
-	) -> void:
-	_face = GSTFace.new(_agent, owner.player.agent)
-	
-	_face.alignment_tolerance = align_tolerance
-	_face.deceleration_radius = deceleration_radius
-	
-	_agent.max_angular_acceleration = max_angular_accel
-	_agent.max_angular_speed = max_angular_speed
-	_agent.position = Vector3(global_position.x, global_position.y, 0)
-	
-	_update_agent()
-
-
-func _update_agent() -> void:
-	_agent.angular_velocity = _angular_velocity
-	_agent.orientation = rotation

project/demos/group_behaviors/GroupBehaviorsDemo.gd

@@ -1,58 +0,0 @@
-extends Node2D
-
-
-onready var spawner: = $Spawner
-
-export var max_linear_speed: = 100.0 setget set_max_linear_speed
-export var max_linear_accel: = 25.0 setget set_max_linear_accel
-export var proximity_radius: = 140.0 setget set_proximity_radius
-export var show_proximity_radius: = true setget set_show_proximity_radius
-export var separation_decay_coefficient: = 2000.0 setget set_separation_decay_coef
-export var cohesion_strength: = 0.3 setget set_cohesion_strength
-export var separation_strength: = 1.5 setget set_separation_strength
-
-
-func _ready() -> void:
-	pass
-
-
-func set_max_linear_speed(value: float) -> void:
-	max_linear_speed = value
-	if spawner:
-		spawner.set_max_linear_speed(value)
-
-
-func set_max_linear_accel(value: float) -> void:
-	max_linear_accel = value
-	if spawner:
-		spawner.set_max_linear_accel(value)
-
-
-func set_proximity_radius(value: float) -> void:
-	proximity_radius = value
-	if spawner:
-		spawner.set_proximity_radius(value)
-
-
-func set_show_proximity_radius(value: bool) -> void:
-	show_proximity_radius = value
-	if spawner:
-		spawner.set_show_proximity_radius(value)
-
-
-func set_separation_decay_coef(value: float) -> void:
-	separation_decay_coefficient = value
-	if spawner:
-		spawner.set_separation_decay_coef(value)
-
-
-func set_cohesion_strength(value: float) -> void:
-	cohesion_strength = value
-	if spawner:
-		spawner.set_cohesion_strength(value)
-
-
-func set_separation_strength(value: float) -> void:
-	separation_strength = value
-	if spawner:
-		spawner.set_separation_strength(value)

project/demos/group_behaviors/GroupBehaviorsDemo.tscn

@@ -1,13 +0,0 @@
-[gd_scene load_steps=4 format=2]
-
-[ext_resource path="res://demos/group_behaviors/Member.tscn" type="PackedScene" id=1]
-[ext_resource path="res://demos/group_behaviors/Spawner.gd" type="Script" id=2]
-[ext_resource path="res://demos/group_behaviors/GroupBehaviorsDemo.gd" type="Script" id=3]
-
-[node name="GroupBehaviorsDemo" type="Node2D"]
-script = ExtResource( 3 )
-
-[node name="Spawner" type="Node2D" parent="."]
-position = Vector2( 512, 300 )
-script = ExtResource( 2 )
-member = ExtResource( 1 )

project/demos/pursue_vs_seek/PursueVSSeekDemo.gd

@@ -1,31 +0,0 @@
-extends Node2D
-
-
-onready var pursuer: = $BoundaryManager/Pursuer
-onready var seeker: = $BoundaryManager/Seeker
-
-export(float, 0, 2000, 40) var max_linear_speed: = 200.0 setget set_max_linear_speed
-export(float, 0, 200, 1) var max_linear_accel: = 10.0 setget set_max_linear_accel
-export(float, 0, 5, 0.1) var predict_time: = 2.0 setget set_predict_time
-
-
-func set_max_linear_speed(value: float) -> void:
-	max_linear_speed = value
-	if pursuer:
-		pursuer.agent.max_linear_speed = value
-	if seeker:
-		seeker.agent.max_linear_speed = value
-
-
-func set_max_linear_accel(value: float) -> void:
-	max_linear_accel = value
-	if pursuer:
-		pursuer.agent.max_linear_acceleration = value
-	if seeker:
-		seeker.agent.max_linear_acceleration = value
-
-
-func set_predict_time(value: float) -> void:
-	predict_time = value
-	if pursuer:
-		pursuer._behavior.max_predict_time = value

project/project.godot

@@ -17,42 +17,42 @@ _global_script_classes=[ {
 "base": "GSTSteeringBehavior",
 "class": "GSTArrive",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTArrive.gd"
+"path": "res://src/Behaviors/GSTArrive.gd"
 }, {
 "base": "GSTGroupBehavior",
 "class": "GSTAvoidCollisions",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTAvoidCollisions.gd"
+"path": "res://src/Behaviors/GSTAvoidCollisions.gd"
 }, {
 "base": "GSTSteeringBehavior",
 "class": "GSTBlend",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTBlend.gd"
+"path": "res://src/Behaviors/GSTBlend.gd"
 }, {
 "base": "GSTGroupBehavior",
 "class": "GSTCohesion",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTCohesion.gd"
+"path": "res://src/Behaviors/GSTCohesion.gd"
 }, {
 "base": "GSTPursue",
 "class": "GSTEvade",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTEvade.gd"
+"path": "res://src/Behaviors/GSTEvade.gd"
 }, {
 "base": "GSTMatchOrientation",
 "class": "GSTFace",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTFace.gd"
+"path": "res://src/Behaviors/GSTFace.gd"
 }, {
 "base": "GSTSeek",
 "class": "GSTFlee",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTFlee.gd"
+"path": "res://src/Behaviors/GSTFlee.gd"
 }, {
 "base": "GSTArrive",
 "class": "GSTFollowPath",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTFollowPath.gd"
+"path": "res://src/Behaviors/GSTFollowPath.gd"
 }, {
 "base": "GSTSteeringBehavior",
 "class": "GSTGroupBehavior",
@@ -62,17 +62,17 @@ _global_script_classes=[ {
 "base": "GSTProximity",
 "class": "GSTInfiniteProximity",
 "language": "GDScript",
-"path": "res://src/proximities/GSTInfiniteProximity.gd"
+"path": "res://src/Proximities/GSTInfiniteProximity.gd"
 }, {
 "base": "GSTMatchOrientation",
 "class": "GSTLookWhereYouGo",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTLookWhereYouGo.gd"
+"path": "res://src/Behaviors/GSTLookWhereYouGo.gd"
 }, {
 "base": "GSTSteeringBehavior",
 "class": "GSTMatchOrientation",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTMatchOrientation.gd"
+"path": "res://src/Behaviors/GSTMatchOrientation.gd"
 }, {
 "base": "Reference",
 "class": "GSTPath",
@@ -82,32 +82,32 @@ _global_script_classes=[ {
 "base": "GSTSteeringBehavior",
 "class": "GSTPriority",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTPriority.gd"
+"path": "res://src/Behaviors/GSTPriority.gd"
 }, {
 "base": "Reference",
 "class": "GSTProximity",
 "language": "GDScript",
-"path": "res://src/proximities/GSTProximity.gd"
+"path": "res://src/Proximities/GSTProximity.gd"
 }, {
 "base": "GSTSteeringBehavior",
 "class": "GSTPursue",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTPursue.gd"
+"path": "res://src/Behaviors/GSTPursue.gd"
 }, {
 "base": "GSTProximity",
 "class": "GSTRadiusProximity",
 "language": "GDScript",
-"path": "res://src/proximities/GSTRadiusProximity.gd"
+"path": "res://src/Proximities/GSTRadiusProximity.gd"
 }, {
 "base": "GSTSteeringBehavior",
 "class": "GSTSeek",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTSeek.gd"
+"path": "res://src/Behaviors/GSTSeek.gd"
 }, {
 "base": "GSTGroupBehavior",
 "class": "GSTSeparation",
 "language": "GDScript",
-"path": "res://src/behaviors/GSTSeparation.gd"
+"path": "res://src/Behaviors/GSTSeparation.gd"
 }, {
 "base": "GSTAgentLocation",
 "class": "GSTSteeringAgent",

project/src/Behaviors/GSTArrive.gd

@@ -7,7 +7,7 @@ class_name GSTArrive
 var target: GSTAgentLocation
 var arrival_tolerance: float
 var deceleration_radius: float
-var time_to_reach: = 0.1
+var time_to_reach := 0.1
 
 
 func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
@@ -15,18 +15,18 @@ func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
 
 
 func _arrive(acceleration: GSTTargetAcceleration, target_position: Vector3) -> GSTTargetAcceleration:
-	var to_target: = target_position - agent.position
-	var distance: = to_target.length()
+	var to_target := target_position - agent.position
+	var distance := to_target.length()
 	
 	if distance <= arrival_tolerance:
 		acceleration.set_zero()
 	else:
-		var desired_speed: = agent.max_linear_speed
+		var desired_speed := agent.max_linear_speed
 		
 		if distance <= deceleration_radius:
 			desired_speed *= distance / deceleration_radius
 		
-		var desired_velocity: = to_target * desired_speed/distance
+		var desired_velocity := to_target * desired_speed/distance
 		
 		desired_velocity = (desired_velocity - agent.linear_velocity) * 1.0 / time_to_reach
 		

project/src/Behaviors/GSTAvoidCollisions.gd

@@ -21,7 +21,7 @@ func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAccele
 	first_minimum_separation = 0
 	first_distance = 0
 	
-	var neighbor_count: = proximity.find_neighbors(_callback)
+	var neighbor_count := proximity.find_neighbors(_callback)
 	
 	if neighbor_count == 0 or not first_neighbor:
 		acceleration.set_zero()
@@ -39,9 +39,9 @@ func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAccele
 
 
 func report_neighbor(neighbor: GSTSteeringAgent) -> bool:
-	var relative_position: = neighbor.position - agent.position
-	var relative_velocity: = neighbor.linear_velocity - agent.linear_velocity
-	var relative_speed_squared: = relative_velocity.length_squared()
+	var relative_position := neighbor.position - agent.position
+	var relative_velocity := neighbor.linear_velocity - agent.linear_velocity
+	var relative_speed_squared := relative_velocity.length_squared()
 	
 	if relative_speed_squared == 0:
 		return false

project/src/Behaviors/GSTBlend.gd

@@ -9,8 +9,8 @@ class_name GSTBlend
 # `GSTSteeringBehavior` and a `weight` key with a value of type float.
 
 
-var _behaviors: = []
-var _accel: = GSTTargetAcceleration.new()
+var _behaviors := []
+var _accel := GSTTargetAcceleration.new()
 
 
 func _init(agent: GSTSteeringAgent).(agent) -> void:

project/src/Behaviors/GSTEvade.gd

@@ -8,7 +8,7 @@ class_name GSTEvade
 func _init(
 		agent: GSTSteeringAgent,
 		target: GSTSteeringAgent,
-		max_predict_time: = 1.0).(agent, target, max_predict_time):
+		max_predict_time := 1.0).(agent, target, max_predict_time):
 	pass
 
 

project/src/Behaviors/GSTFace.gd

@@ -9,8 +9,8 @@ func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent, target) ->
 
 
 func _face(acceleration: GSTTargetAcceleration, target_position: Vector3) -> GSTTargetAcceleration:
-	var to_target: = target_position - agent.position
-	var distance_squared: = to_target.length_squared()
+	var to_target := target_position - agent.position
+	var distance_squared := to_target.length_squared()
 	
 	if distance_squared < agent.zero_linear_speed_threshold:
 		acceleration.set_zero()

project/src/Behaviors/GSTFollowPath.gd

@@ -4,33 +4,33 @@ class_name GSTFollowPath
 
 
 var path: GSTPath
-var path_offset: = 0.0
+var path_offset := 0.0
 
-var path_param: = {}
+var path_param := {}
 
-var arrive_enabled: = true
-var prediction_time: = 0.0
+var arrive_enabled := true
+var prediction_time := 0.0
 
 
 func _init(
 		agent: GSTSteeringAgent, 
 		path: GSTPath, 
-		path_offset: = 0.0, 
-		prediction_time: = 0.0).(agent, null) -> void:
+		path_offset := 0.0, 
+		prediction_time := 0.0).(agent, null) -> void:
 	self.path = path
 	self.path_offset = path_offset
 	self.prediction_time = prediction_time
 
 
 func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAcceleration:
-	var location: = (
+	var location := (
 			agent.position if prediction_time == 0
 			else agent.position + (agent.linear_velocity * prediction_time))
 	
-	var distance: = path.calculate_distance(location, path_param)
-	var target_distance: = distance + path_offset
+	var distance := path.calculate_distance(location, path_param)
+	var target_distance := distance + path_offset
 	
-	var target_position: = path.calculate_target_position(path_param, target_distance)
+	var target_position := path.calculate_target_position(path_param, target_distance)
 	
 	if arrive_enabled and path.is_open:
 		if path_offset >= 0:

project/src/Behaviors/GSTLookWhereYouGo.gd

@@ -12,5 +12,5 @@ func _calculate_steering(accel: GSTTargetAcceleration) -> GSTTargetAcceleration:
 		accel.set_zero()
 		return accel
 	else:
-		var orientation: = atan2(agent.linear_velocity.x, -agent.linear_velocity.y)
+		var orientation := atan2(agent.linear_velocity.x, -agent.linear_velocity.y)
 		return _match_orientation(accel, orientation)

project/src/Behaviors/GSTMatchOrientation.gd

@@ -15,14 +15,14 @@ func _init(agent: GSTSteeringAgent, target: GSTAgentLocation).(agent) -> void:
 
 
 func _match_orientation(acceleration: GSTTargetAcceleration, desired_orientation: float) -> GSTTargetAcceleration:
-	var rotation: = wrapf(desired_orientation - agent.orientation, -PI, PI)
+	var rotation := wrapf(desired_orientation - agent.orientation, -PI, PI)
 
-	var rotation_size: = abs(rotation)
+	var rotation_size := abs(rotation)
 
 	if rotation_size <= alignment_tolerance:
 		acceleration.set_zero()
 	else:
-		var desired_rotation: = agent.max_angular_speed
+		var desired_rotation := agent.max_angular_speed
 	
 		if rotation_size <= deceleration_radius:
 			desired_rotation *= rotation_size / deceleration_radius
@@ -31,7 +31,7 @@ func _match_orientation(acceleration: GSTTargetAcceleration, desired_orientation
 	
 		acceleration.angular = (desired_rotation - agent.angular_velocity) / time_to_reach
 	
-		var limited_acceleration: = abs(acceleration.angular)
+		var limited_acceleration := abs(acceleration.angular)
 		if limited_acceleration > agent.max_angular_acceleration:
 			acceleration.angular *= agent.max_angular_acceleration / limited_acceleration
 	

project/src/Behaviors/GSTPriority.gd

@@ -4,13 +4,13 @@ class_name GSTPriority
  # acceleration.
 
 
-var _behaviors: = []
+var _behaviors := []
 
 var last_selected_index: int
 var threshold_for_zero: float
 
 
-func _init(agent: GSTSteeringAgent, threshold_for_zero: = 0.001).(agent) -> void:
+func _init(agent: GSTSteeringAgent, threshold_for_zero := 0.001).(agent) -> void:
 	self.threshold_for_zero = threshold_for_zero
 
 
@@ -26,11 +26,11 @@ func get_behavior_at(index: int) -> GSTSteeringBehavior:
 
 
 func _calculate_steering(accel: GSTTargetAcceleration) -> GSTTargetAcceleration:
-	var threshold_squared: = threshold_for_zero * threshold_for_zero
+	var threshold_squared := threshold_for_zero * threshold_for_zero
 	
 	last_selected_index = -1
 	
-	var size: = _behaviors.size()
+	var size := _behaviors.size()
 	
 	if size > 0:
 		for i in range(size):

project/src/Behaviors/GSTPursue.gd

@@ -12,20 +12,20 @@ var max_predict_time: float
 func _init(
 		agent: GSTSteeringAgent,
 		target: GSTSteeringAgent,
-		max_predict_time: = 1.0).(agent) -> void:
+		max_predict_time := 1.0).(agent) -> void:
 	self.target = target
 	self.max_predict_time = max_predict_time
 
 
 func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAcceleration:
-	var target_position: = target.position
-	var distance_squared: = (target_position - agent.position).length_squared()
+	var target_position := target.position
+	var distance_squared := (target_position - agent.position).length_squared()
 	
-	var speed_squared: = agent.linear_velocity.length_squared()
-	var predict_time: = max_predict_time
+	var speed_squared := agent.linear_velocity.length_squared()
+	var predict_time := max_predict_time
 	
 	if speed_squared > 0:
-		var predict_time_squared: = distance_squared / speed_squared
+		var predict_time_squared := distance_squared / speed_squared
 		if predict_time_squared < max_predict_time * max_predict_time:
 			predict_time = sqrt(predict_time_squared)
 	

project/src/Behaviors/GSTSeparation.gd

@@ -8,7 +8,7 @@ class_name GSTSeparation
 # # In effect, all neighbors produce a single repelling force.
 
 
-var decay_coefficient: = 1.0
+var decay_coefficient := 1.0
 
 var acceleration: GSTTargetAcceleration
 
@@ -25,12 +25,12 @@ func _calculate_steering(acceleration: GSTTargetAcceleration) -> GSTTargetAccele
 
 
 func report_neighbor(neighbor: GSTSteeringAgent) -> bool:
-	var to_agent: = agent.position - neighbor.position
+	var to_agent := agent.position - neighbor.position
 
-	var distance_squared: = to_agent.length_squared()
-	var max_acceleration: = agent.max_linear_acceleration
+	var distance_squared := to_agent.length_squared()
+	var max_acceleration := agent.max_linear_acceleration
 
-	var strength: = decay_coefficient / distance_squared
+	var strength := decay_coefficient / distance_squared
 	if strength > max_acceleration:
 		strength = max_acceleration
 	

project/src/GSTAgentLocation.gd

@@ -2,5 +2,5 @@ class_name GSTAgentLocation
 # Data type to represent an agent with a location and an orientation
 
 
-var position: = Vector3.ZERO
-var orientation: = 0.0
+var position := Vector3.ZERO
+var orientation := 0.0

project/src/GSTGroupBehavior.gd

@@ -5,7 +5,7 @@ class_name GSTGroupBehavior
 
 var proximity: GSTProximity
 
-var _callback: = funcref(self, "report_neighbor")
+var _callback := funcref(self, "report_neighbor")
 
 
 func _init(agent: GSTSteeringAgent, proximity: GSTProximity).(agent) -> void:

project/src/GSTPath.gd

@@ -15,7 +15,7 @@ var _nearest_point_on_segment: Vector3
 var _nearest_point_on_path: Vector3
 
 
-func _init(waypoints: Array, is_open: = false) -> void:
+func _init(waypoints: Array, is_open := false) -> void:
 	self.is_open = is_open
 	create_path(waypoints)
 	_nearest_point_on_segment = waypoints[0]
@@ -39,7 +39,7 @@ func create_path(waypoints: Array) -> void:
 			break
 		else:
 			current = waypoints[0]
-		var segment: = GSTSegment.new(previous, current)
+		var segment := GSTSegment.new(previous, current)
 		path_length += segment.length
 		segment.cumulative_length = path_length
 		_segments.append(segment)
@@ -50,7 +50,7 @@ func calculate_distance(agent_current_position: Vector3, path_parameter: Diction
 	var nearest_segment: GSTSegment
 	for i in range(_segments.size()):
 		var segment: GSTSegment = _segments[i]
-		var distance_squared: = _calculate_point_segment_distance_squared(
+		var distance_squared := _calculate_point_segment_distance_squared(
 				segment.begin,
 				segment.end,
 				agent_current_position)
@@ -61,7 +61,7 @@ func calculate_distance(agent_current_position: Vector3, path_parameter: Diction
 			nearest_segment = segment
 			path_parameter.segment_index = i
 	
-	var length_on_path: = (
+	var length_on_path := (
 		nearest_segment.cumulative_length - 
 		_nearest_point_on_path.distance_to(nearest_segment.end))
 	
@@ -86,7 +86,7 @@ func calculate_target_position(param: Dictionary, target_distance: float) -> Vec
 			desired_segment = segment
 			break
 	
-	var distance: = desired_segment.cumulative_length - target_distance
+	var distance := desired_segment.cumulative_length - target_distance
 	
 	return (
 		(desired_segment.begin - desired_segment.end) *
@@ -103,8 +103,8 @@ func get_end_point() -> Vector3:
 
 func _calculate_point_segment_distance_squared(start: Vector3, end: Vector3, position: Vector3) -> float:
 	_nearest_point_on_segment = start
-	var start_end: = end - start
-	var start_end_length_squared: = start_end.length_squared()
+	var start_end := end - start
+	var start_end_length_squared := start_end.length_squared()
 	if 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)

project/src/GSTSteeringAgent.gd

@@ -3,12 +3,12 @@ class_name GSTSteeringAgent
 # Extended agent data type that adds velocity, speed, and size data
 
 
-var zero_linear_speed_threshold: = 0.01
-var max_linear_speed: = 0.0
-var max_linear_acceleration: = 0.0
-var max_angular_speed: = 0.0
-var max_angular_acceleration: = 0.0
-var linear_velocity: = Vector3.ZERO
-var angular_velocity: = 0.0
-var bounding_radius: = 0.0
-var tagged: = false
+var zero_linear_speed_threshold := 0.01
+var max_linear_speed := 0.0
+var max_linear_acceleration := 0.0
+var max_angular_speed := 0.0
+var max_angular_acceleration := 0.0
+var linear_velocity := Vector3.ZERO
+var angular_velocity := 0.0
+var bounding_radius := 0.0
+var tagged := false

project/src/GSTSteeringBehavior.gd

@@ -2,7 +2,7 @@ class_name GSTSteeringBehavior
 # Base class to calculate how an AI agent steers itself.
 
 
-var enabled: = true
+var enabled := true
 var agent: GSTSteeringAgent
 
 

project/src/GSTTargetAcceleration.gd

@@ -2,8 +2,8 @@ class_name GSTTargetAcceleration
 # A linear and angular amount of acceleration.
 
 
-var linear: = Vector3.ZERO
-var angular: = 0.0
+var linear := Vector3.ZERO
+var angular := 0.0
 
 
 func set_zero() -> void:

project/src/GSTUtils.gd

@@ -3,8 +3,8 @@ class_name GSTUtils
 
 
 static func clampedv3(vector: Vector3, limit: float) -> Vector3:
-	var length_squared: = vector.length_squared()
-	var limit_squared: = limit * limit
+	var length_squared := vector.length_squared()
+	var limit_squared := limit * limit
 	if length_squared > limit_squared:
 		vector *= sqrt(limit_squared / length_squared)
 	return vector

project/src/Proximities/GSTInfiniteProximity.gd

@@ -8,10 +8,10 @@ func _init(agent: GSTSteeringAgent, agents: Array).(agent, agents) -> void:
 
 
 func find_neighbors(callback: FuncRef) -> int:
-	var neighbor_count: = 0
-	var agent_count: = agents.size()
+	var neighbor_count := 0
+	var agent_count := agents.size()
 	for i in range(agent_count):
-		var current_agent: = agents[i] as GSTSteeringAgent
+		var current_agent := agents[i] as GSTSteeringAgent
 
 		if current_agent != agent:
 			if callback.call_func(current_agent):

project/src/Proximities/GSTProximity.gd

@@ -5,7 +5,7 @@ class_name GSTProximity
 
 
 var agent: GSTSteeringAgent
-var agents: = []
+var agents := []
 
 
 func _init(agent: GSTSteeringAgent, agents: Array) -> void:

project/src/Proximities/GSTRadiusProximity.gd

@@ -4,9 +4,9 @@ class_name GSTRadiusProximity
 # they lie within the specified radius.
 
 
-var radius: = 0.0
+var radius := 0.0
 
-var _last_frame: = 0
+var _last_frame := 0
 var _scene_tree: SceneTree
 
 
@@ -16,22 +16,22 @@ func _init(agent: GSTSteeringAgent, agents: Array, radius: float).(agent, agents
 
 
 func find_neighbors(callback: FuncRef) -> int:
-	var agent_count: = agents.size()
-	var neighbor_count: = 0
+	var agent_count := agents.size()
+	var neighbor_count := 0
 	
-	var current_frame: = _scene_tree.get_frame() if _scene_tree else -_last_frame
+	var current_frame := _scene_tree.get_frame() if _scene_tree else -_last_frame
 	if current_frame != _last_frame:
 		_last_frame = current_frame
 		
-		var owner_position: = agent.position
+		var owner_position := agent.position
 		
 		for i in range(agent_count):
-			var current_agent: = agents[i] as GSTSteeringAgent
+			var current_agent := agents[i] as GSTSteeringAgent
 	
 			if current_agent != agent:
-				var distance_squared: = owner_position.distance_squared_to(current_agent.position)
+				var distance_squared := owner_position.distance_squared_to(current_agent.position)
 	
-				var range_to: = radius + current_agent.bounding_radius
+				var range_to := radius + current_agent.bounding_radius
 	
 				if distance_squared < range_to * range_to:
 					if callback.call_func(current_agent):