fix metal plate pickup

scripts/MetalPlate.gd

@@ -19,6 +19,7 @@ var dead: bool = false
 var damage_modifier: float = 1.2
 
 @onready var mesh_node: MeshInstance3D = $PlateMesh
+@onready var tooltip: Label3D = $Tooltip
 var plate_mat: StandardMaterial3D
 
 const COLOR_IDLE   := Color(0.6, 0.65, 0.72)
@@ -26,8 +27,35 @@ const COLOR_IMPACT := Color(1.0, 1.0, 1.0)
 
 func _ready() -> void:
 	add_to_group("kickable")
+	add_to_group("interactable")
 	plate_mat = mesh_node.material_override.duplicate() as StandardMaterial3D
 	mesh_node.material_override = plate_mat
+	tooltip.visible = false
+
+func _process(_delta: float) -> void:
+	if dead:
+		tooltip.visible = false
+		return
+	var players := get_tree().get_nodes_in_group("player")
+	if players.is_empty():
+		tooltip.visible = false
+		return
+	var p := players[0] as Node3D
+	tooltip.visible = p != null and global_position.distance_to(p.global_position) < 2.5
+
+func interact(player: Node) -> void:
+	if dead:
+		return
+	player.call("apply_upgrade_armor")
+	dead = true
+	set_physics_process(false)
+	tooltip.visible = false
+	remove_from_group("interactable")
+	remove_from_group("kickable")
+	var tw := create_tween()
+	tw.tween_property(self, "scale", Vector3(1.4, 0.1, 1.4), 0.15)
+	tw.tween_property(self, "scale", Vector3(0.0, 0.0, 0.0), 0.1)
+	tw.tween_callback(queue_free)
 
 func apply_collision_damage(dmg: float) -> void:
 	_take_damage(dmg)