add essence and magic table

scripts/EnchantedSphere.gd

@@ -0,0 +1,25 @@
+extends Node3D
+
+@onready var tooltip: Label3D = $Tooltip
+@onready var mesh_node: MeshInstance3D = $SphereMesh
+
+func _ready() -> void:
+	add_to_group("interactable")
+	tooltip.visible = false
+	var tw := create_tween().set_loops()
+	tw.tween_property(self, "position:y", 0.7, 0.9)
+	tw.tween_property(self, "position:y", 0.3, 0.9)
+
+func _process(delta: float) -> void:
+	rotation.y += delta * 1.8
+	mesh_node.rotation.x += delta * 0.9
+	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:
+	player.call("apply_upgrade_enchant")
+	queue_free()