Compose planet surfaces from profiles

RockField.gd

@@ -17,7 +17,8 @@ extends Node2D
 @export var despawn_radius: float = 2600.0
 @export var check_interval: float = 0.5
 
-@onready var fleet: Node2D = get_node("../Fleet")
+@export var fleet_path: NodePath = NodePath("../Fleet")
+@onready var fleet: Node2D = get_node(fleet_path)
 
 var rock_scene: PackedScene = preload("res://Rock.tscn")
 var rocks: Array = []
@@ -26,12 +27,6 @@ var rng: RandomNumberGenerator = RandomNumberGenerator.new()
 
 
 func _ready() -> void:
-	# Gas giants have their own gas vents and must never receive ore pickups.
-	# This check happens before the initial population pass, unlike merely
-	# hiding the field later from PlanetSurfaceController.
-	if GameState.planet_type == "gas_giant":
-		set_process(false)
-		return
 	rng.randomize()
 	# Populate immediately rather than waiting out the first interval, so
 	# the surface isn't visibly empty for half a second on arrival.