Recommended coding style fixes.

game/src/AI/EnemyPassivePatrol.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=12 format=2]
+[gd_scene load_steps=13 format=2]
 
 [ext_resource path="res://src/AI/EnemyPassivePatrol.gd" type="Script" id=1]
 [ext_resource path="res://src/Combat/DamageSource.gd" type="Script" id=2]
@@ -16,6 +16,33 @@ extents = Vector2( 50, 20 )
 [sub_resource type="CircleShape2D" id=2]
 radius = 33.0
 
+[sub_resource type="Animation" id=3]
+resource_name = "FadeOut"
+tracks/0/type = "value"
+tracks/0/path = NodePath("../../Body:color_fill")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0, 0.2, 1 ),
+"transitions": PoolRealArray( 1, 1, 1 ),
+"update": 0,
+"values": [ Color( 0.615686, 0, 1, 1 ), Color( 1, 0, 0, 0.8 ), Color( 1, 0, 0, 0 ) ]
+}
+tracks/1/type = "value"
+tracks/1/path = NodePath("../../Body:color_outline")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/keys = {
+"times": PoolRealArray( 0, 1 ),
+"transitions": PoolRealArray( 1, 1 ),
+"update": 0,
+"values": [ Color( 0.270588, 0.0745098, 0.619608, 1 ), Color( 0.270588, 0.0745098, 0.619608, 0 ) ]
+}
+
 [node name="EnemyPassivePatrol" type="KinematicBody2D"]
 collision_layer = 16
 collision_mask = 2
@@ -42,7 +69,8 @@ shape = SubResource( 2 )
 [node name="Body" type="Node2D" parent="."]
 script = ExtResource( 4 )
 size = Vector2( 100, 40 )
-color_fill = Color( 0.384314, 0.368627, 0.929412, 1 )
+outline = Vector2( 6, 6 )
+color_fill = Color( 0.615686, 0, 1, 1 )
 color_outline = Color( 0.270588, 0.0745098, 0.619608, 1 )
 
 [node name="StateMachine" type="Node" parent="."]
@@ -54,7 +82,6 @@ script = ExtResource( 6 )
 
 [node name="Hooked" type="Node" parent="StateMachine"]
 script = ExtResource( 7 )
-state_when_struck = "Stunned"
 hooked_color = Color( 0.886275, 0.415686, 0.133333, 1 )
 
 [node name="Stunned" type="Node" parent="StateMachine"]
@@ -65,4 +92,7 @@ next_state = "Destroyed"
 script = ExtResource( 9 )
 hurt_color = Color( 1, 0, 0, 1 )
 
+[node name="AnimationPlayer" type="AnimationPlayer" parent="StateMachine/Destroyed"]
+anims/FadeOut = SubResource( 3 )
+
 [editable path="HookTarget"]

game/src/AI/States/Destroyed.gd

@@ -10,21 +10,7 @@ export var hurt_color: Color
 func enter(msg: Dictionary = {}) -> void:
 	owner.hook_target.set_color(Color(0, 0, 0, 0))
 	owner.body.set_color_fill(hurt_color)
-	
-	yield(do_color(), "completed")
-	
-	owner.queue_free()
-
-
-func do_color() -> void:
-	var start_fill_color: Color = owner.body.color_fill
-	var start_outline_color: Color = owner.body.color_outline
-	
-	for i in range(0, 30):
-		start_fill_color.a = lerp(1, 0, i / 30.0)
-		start_outline_color.a = lerp(1, 0, i / 30.0)
-		
-		owner.body.set_color_fill(start_fill_color)
-		owner.body.set_color_outline(start_outline_color)
-		
-		yield(get_tree(), "idle_frame")
+	var animation_player: AnimationPlayer = $AnimationPlayer
+	animation_player.play("FadeOut")
+	yield(animation_player, "animation_finished")
+	owner.queue_free()

game/src/AI/States/Hooked.gd

@@ -6,7 +6,6 @@ It simply waits until the player body collides with the hitbox, colors the body,
 """
 
 
-export var state_when_struck: String
 export var hooked_color: Color
 
 
@@ -16,4 +15,4 @@ func enter(msg: Dictionary = {}) -> void:
 
 
 func _on_Player_body_entered(body: Player) -> void:
-	_state_machine.transition_to(state_when_struck, {player = body})
+	_state_machine.transition_to("Stunned", {player = body})

game/src/AI/States/HorizontalPatrol.gd

@@ -12,7 +12,7 @@ onready var _direction: int = owner.direction
 func enter(msg: Dictionary = {}) -> void:
 	owner.hook_target.connect("hooked_onto_from", self, "_on_Hook_hooked_onto_from", [], CONNECT_ONESHOT)
 	owner.hitbox.connect("body_entered", self, "_on_Player_body_entered")
-	owner.hook_target.set_is_active(true)
+	owner.hook_target.is_active = true
 
 
 func exit() -> void: