Implement demo for Face behavior

project/demos/face/Face.tscn

@@ -0,0 +1,31 @@
+[gd_scene load_steps=6 format=2]
+
+[ext_resource path="res://demos/face/Player.gd" type="Script" id=1]
+[ext_resource path="res://demos/face/Turret.gd" type="Script" id=2]
+[ext_resource path="res://demos/face/FaceDemo.gd" type="Script" id=3]
+
+[sub_resource type="CircleShape2D" id=1]
+radius = 20.0
+
+[sub_resource type="CircleShape2D" id=2]
+radius = 30.0
+
+[node name="Face" type="Node2D"]
+script = ExtResource( 3 )
+__meta__ = {
+"_editor_description_": "A demo showing the usage of the Face steering behavior."
+}
+
+[node name="Player" type="KinematicBody2D" parent="."]
+position = Vector2( 512, 450 )
+script = ExtResource( 1 )
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Player"]
+shape = SubResource( 1 )
+
+[node name="Turret" type="KinematicBody2D" parent="."]
+position = Vector2( 512, 150 )
+script = ExtResource( 2 )
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Turret"]
+shape = SubResource( 2 )

project/demos/face/FaceDemo.gd

@@ -0,0 +1,4 @@
+extends Node2D
+
+
+onready var player: = $Player

project/demos/face/Player.gd

@@ -0,0 +1,26 @@
+extends KinematicBody2D
+
+
+onready var _radius: float = ($CollisionShape2D.shape as CircleShape2D).radius
+onready var agent: = GSTAgentLocation.new()
+
+export var speed: = 125.0
+
+
+func _draw() -> void:
+	draw_circle(Vector2.ZERO, _radius, Color.red)
+
+
+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 +1,52 @@
+extends KinematicBody2D
+
+
+onready var _radius: float = ($CollisionShape2D.shape as CircleShape2D).radius
+onready var _cannon: = Rect2(Vector2(-5, 0), Vector2(10, -_radius*2))
+onready var _agent: = GSTSteeringAgent.new()
+onready var _accel: = GSTTargetAcceleration.new()
+
+
+var _angular_velocity: = 0.0
+var _angular_drag: = 1.0
+var _face: GSTFace
+
+
+func _draw() -> void:
+	draw_rect(_cannon, Color.blue)
+	draw_circle(Vector2.ZERO, _radius, Color.teal)
+
+
+func _physics_process(delta: float) -> void:
+	if not _face:
+		_setup()
+	
+	_accel = _face.calculate_steering(_accel)
+	_angular_velocity += _accel.angular
+	
+	if _angular_velocity < 0:
+		_angular_velocity += _angular_drag * delta
+	elif _angular_velocity > 0:
+		_angular_velocity -= _angular_drag * delta
+	
+	rotation += _angular_velocity * delta
+	
+	_update_agent()
+
+
+func _update_agent() -> void:
+	_agent.angular_velocity = _angular_velocity
+	_agent.orientation = rotation
+
+
+func _setup() -> void:
+	_face = GSTFace.new(_agent, owner.player.agent)
+	
+	_face.alignment_tolerance = 0.1
+	_face.deceleration_radius = PI/2
+	
+	_agent.max_angular_acceleration = 0.5
+	_agent.max_angular_speed = 5
+	_agent.position = Vector3(global_position.x, global_position.y, 0)
+	
+	_update_agent()

project/demos/pursue_vs_seek/PursueVSSeek.tscn

@@ -29,6 +29,7 @@ script = ExtResource( 1 )
 color = Color( 0.811765, 0.909804, 0.113725, 1 )
 
 [node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="BoundaryManager/Pursuer"]
+modulate = Color( 0.694118, 0.694118, 0.694118, 1 )
 polygon = PoolVector2Array( 0, -30, -25, 25, 25, 25 )
 
 [node name="Seeker" type="KinematicBody2D" parent="BoundaryManager"]
@@ -39,4 +40,5 @@ color = Color( 0.113725, 0.909804, 0.219608, 1 )
 use_seek = true
 
 [node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="BoundaryManager/Seeker"]
+modulate = Color( 0.317647, 0.317647, 0.317647, 1 )
 polygon = PoolVector2Array( 0, -30, -25, 25, 25, 25 )

project/demos/seek_and_flee/SeekFlee.tscn

@@ -3,9 +3,9 @@
 [ext_resource path="res://demos/seek_and_flee/Player.gd" type="Script" id=1]
 [ext_resource path="res://demos/seek_and_flee/Spawner.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/Seeker.tscn" type="PackedScene" id=4]
+[ext_resource path="res://demos/seek_and_flee/Agents/Seeker.tscn" type="PackedScene" id=4]
 [ext_resource path="res://demos/seek_and_flee/Boundary.gd" type="Script" id=5]
-[ext_resource path="res://demos/seek_and_flee/Coward.tscn" type="PackedScene" id=6]
+[ext_resource path="res://demos/seek_and_flee/Agents/Coward.tscn" type="PackedScene" id=6]
 
 [sub_resource type="CircleShape2D" id=1]
 radius = 30.0