Added pickups and doors

game/doors/door.gd

@@ -0,0 +1,39 @@
+class_name Door
+extends Node2D
+
+
+const ANIMATION_CLOSED = "closed"
+const ANIMATION_OPEN = "open"
+const ANIMATION_OPENING = "opening"
+
+
+@onready var sprite : AnimatedSprite2D = $AnimatedSprite2D
+@onready var static_body : StaticBody2D = $StaticBody2D
+@onready var static_body_collision : CollisionShape2D = $%StaticBodyCollision
+@onready var area_collision : CollisionShape2D = $%AreaCollision
+
+
+func _ready() -> void:
+	sprite.play(ANIMATION_CLOSED)
+
+
+func _is_closed() -> bool:
+	return sprite.animation == ANIMATION_CLOSED
+
+
+func _can_open(_body: Node2D) -> bool:
+	return true
+
+
+func _open() -> void:
+	sprite.play(ANIMATION_OPENING)
+	static_body.process_mode = Node.PROCESS_MODE_DISABLED
+
+
+func _on_animation_finished() -> void:
+	sprite.play(ANIMATION_OPEN)
+
+
+func _on_area_entered(body: Node2D) -> void:
+	if _is_closed() and _can_open(body):
+		_open()