Add spaceship exit component, enemy wave trigger, and update various scene properties

scripts/components/enemy_wave_trigger.gd

@@ -0,0 +1,37 @@
+class_name EnemyWaveTrigger
+extends Node
+
+@export var area2d: Area2D
+@export var path_follow_node: PathFollow2D
+@export var speed: float = 100.0
+@export var loop: bool = false
+@export var activate_on_enter: bool = true
+
+var active: bool = false
+
+
+func _ready() -> void:
+	area2d.body_entered.connect(_on_body_entered)
+	if path_follow_node:
+		path_follow_node.progress = 0
+		path_follow_node.set_process(false)
+
+
+func _process(delta: float) -> void:
+	if not active or not path_follow_node:
+		return
+	path_follow_node.progress += speed * delta
+	if path_follow_node.progress_ratio >= 1.0 and not loop:
+		active = false
+		path_follow_node.set_process(false)
+
+
+func _on_body_entered(body: Node2D) -> void:
+	if activate_on_enter:
+		start_wave()
+
+
+func start_wave() -> void:
+	if path_follow_node:
+		path_follow_node.set_process(true)
+		active = true

scripts/components/periodic_shooting.gd

@@ -8,6 +8,7 @@ extends Node
 @export var root: Node2D
 @export var bullet_spawn_right: Node2D
 @export var bullet_spawn_left: Node2D
+@export var shooting_interval_variation: float = 0.0
 
 var timer: Timer
 
@@ -43,9 +44,16 @@ func on_timer_timeout() -> void:
 	timer.start()
 
 
+
+func get_shoot_interval() -> float:
+	if shooting_interval_variation > 0.0:
+		return shoot_interval + randf_range(-shooting_interval_variation, shooting_interval_variation)
+	return shoot_interval
+
+
 func setup_timer() -> void:
 	timer = Timer.new()
-	timer.wait_time = shoot_interval
+	timer.wait_time = get_shoot_interval()
 	timer.one_shot = false
 	timer.autostart = true
 	timer.timeout.connect(on_timer_timeout)

scripts/components/spaceship_exit_component.gd

@@ -0,0 +1,21 @@
+class_name SpaceshipExitComponent
+extends Node
+
+@export var area2d: Area2D
+signal spaceship_exited
+
+
+func _ready() -> void:
+	if not area2d:
+		printerr("SpaceshipExitComponent: area2d is not set.")
+		return
+
+	area2d.body_entered.connect(_on_area2d_body_entered)
+
+
+func _on_area2d_body_entered(body: Node2D) -> void:
+	if not body is PlayerController:
+		printerr("SpaceshipExitComponent: body is not a PlayerController.")
+		return
+	print("SpaceshipExitComponent: PlayerController exited spaceship.")
+	spaceship_exited.emit()

scripts/components/spaceship_exit_component.gd.uid

@@ -0,0 +1 @@
+uid://ybmwls7hv8j3