Initial reorganization of shmup prroject; temp player sprites added.

scenes/enemy.gd

@@ -0,0 +1,56 @@
+extends Area2D
+
+var bullet_scene = preload("res://scenes/enemy_bullet.tscn")
+var start_pos = Vector2.ZERO
+var speed = 0
+var tween_speed: float = 1.4
+
+var exploding = false
+
+var enemy_move_aggression = randf_range(5, 20)
+var enemy_shoot_aggression = randf_range(4, 20)
+
+@onready var screensize  = get_viewport_rect().size
+
+
+func start(pos):
+    speed = 0
+    position = Vector2(pos.x, -pos.y)
+    start_pos = pos
+    await get_tree().create_timer(randf_range(0.25, 0.55)).timeout
+    var tween = create_tween().set_trans(Tween.TRANS_BACK)
+    tween.tween_property(self, "position:y", start_pos.y, tween_speed)
+    await tween.finished
+    $MoveTimer.wait_time = enemy_move_aggression
+    $MoveTimer.start()
+    $ShootTimer.wait_time = enemy_shoot_aggression
+    $ShootTimer.start()
+
+
+func _on_timer_timeout() -> void:
+  speed = randf_range(75, 100)
+
+func _on_shoot_timer_timeout():
+    var b = bullet_scene.instantiate()
+    get_tree().root.add_child(b)
+    b.start(position)
+    $ShootTimer.wait_time = randf_range(4, 20)
+    $ShootTimer.start()
+
+func _process(delta):
+    position.y += speed * delta
+    if position.y > screensize.y + 32:
+        start(start_pos)
+
+
+func explode():
+    if exploding: return
+    exploding = true
+    print_debug("Enemy explode!")
+    EventBus.enemy_hit.emit(5)
+    speed = 0
+    $AnimationPlayer.play("explode")
+    set_deferred("monitoring", false)
+    await $AnimationPlayer.animation_finished
+    queue_free()
+    EventBus.enemy_died.emit()