Dynamically adapt POOL SIZE for ring effect

sources/minigames/turtles/water.gd

@@ -2,10 +2,11 @@ class_name Water
 extends TextureRect
 
 const WATER_RING_SCENE: PackedScene = preload("res://sources/utils/fx/water_ring.tscn")
-# Up to MAX_TURTLE_COUNT (5) turtles each loop the swim animation roughly
-# every 0.7s, so ~7-8 rings/second. The pool absorbs the bursts without
-# instantiate/queue_free churn on every loop.
-const POOL_SIZE: int = 12
+# Rings are checked out for the full 3.0s particle lifetime.
+# Worst case: 5 turtles (MAX_TURTLE_COUNT) each looping the swim animation
+# every 8/12 = 0.667s emit ~7.5 rings/sec → ~23 concurrent in flight.
+# We pre-allocate 24 and grow on demand if real usage ever exceeds that.
+const POOL_SIZE: int = 24
 
 @export var ring_color: Color
 
@@ -14,19 +15,21 @@ var _available_rings: Array[WaterRingFX] = []
 
 func _ready() -> void:
 	for _index: int in POOL_SIZE:
-		var fx: WaterRingFX = WATER_RING_SCENE.instantiate()
-		fx.modulate = ring_color
-		fx.hide()
-		add_child(fx)
-		_available_rings.append(fx)
+		_available_rings.append(_make_ring())
 
 
 func spawn_water_ring(pos: Vector2) -> void:
-	if _available_rings.is_empty():
-		return
-	var fx: WaterRingFX = _available_rings.pop_back()
+	var fx: WaterRingFX = _available_rings.pop_back() if not _available_rings.is_empty() else _make_ring()
 	fx.position = pos
 	fx.show()
 	await fx.play()
 	fx.hide()
 	_available_rings.append(fx)
+
+
+func _make_ring() -> WaterRingFX:
+	var fx: WaterRingFX = WATER_RING_SCENE.instantiate()
+	fx.modulate = ring_color
+	fx.hide()
+	add_child(fx)
+	return fx