diff --git a/Delaunator.gd b/Delaunator.gd
index 5976fa1..221047b 100644
--- a/Delaunator.gd
+++ b/Delaunator.gd
@@ -1,28 +1,28 @@
 class_name Delaunator
 
 const EPSILON = pow(2, -52)
-const EDGE_STACK = []
+var EDGE_STACK = []
 
-var coords := PoolRealArray()
-var halfedges := PoolIntArray()
-var hull := [] # This array should be a PoolIntArray but we need to use the .slice() function on it.
-var triangles := PoolIntArray()
+var coords := PackedFloat32Array()
+var halfedges := PackedInt32Array()
+var hull := [] # This array should be a PackedInt32Array but we need to use the .slice() function on it.
+var triangles := PackedInt32Array()
 var triangles_len := 0
 var _cx: float
 var _cy: float
-var _dists := PoolRealArray()
-var _halfedges := [] # This array should be a PoolIntArray but we need to use the .slice() function on it.
+var _dists := PackedFloat32Array()
+var _halfedges := [] # This array should be a PackedInt32Array but we need to use the .slice() function on it.
 var _hash_size: int
-var _hull_hash := PoolIntArray()
-var _hull_next := PoolIntArray()
-var _hull_prev := PoolIntArray()
+var _hull_hash := PackedInt32Array()
+var _hull_next := PackedInt32Array()
+var _hull_prev := PackedInt32Array()
 var _hull_start: int
-var _hull_tri := PoolIntArray()
-var _ids := [] # PoolIntArray, but causes errors if not an array
-var _triangles := []  # This array should be a PoolIntArray but we need to use the .slice() function on it.
+var _hull_tri := PackedInt32Array()
+var _ids := [] # PackedInt32Array, but causes errors if not an array
+var _triangles := []  # This array should be a PackedInt32Array but we need to use the .slice() function on it.
 
 
-func _init(points: PoolVector2Array) -> void:
+func _init(points: PackedVector2Array) -> void:
 	if points.size() < 3:
 		push_error(ProjectSettings.get_setting("application/config/name") + " needs at least 3 points.")
 		return
@@ -152,7 +152,7 @@ func update() -> void:
 				hull[j] = id
 				j += 1
 				d0 = _dists[id]
-		hull = hull.slice(0, j - 1)
+		hull = hull.slice(0, j)
 		triangles = []
 		halfedges = []
 
@@ -292,8 +292,8 @@ func update() -> void:
 		e = _hull_next[e]
 
 	# Trim typed triangle mesh arrays.
-	triangles = _triangles.slice(0, triangles_len - 1)
-	halfedges = _halfedges.slice(0, triangles_len - 1)
+	triangles = _triangles.slice(0, triangles_len)
+	halfedges = _halfedges.slice(0, triangles_len)
 
 
 func _hash_key(x: float, y: float) -> float:
@@ -408,7 +408,7 @@ func _add_triangle(i0: int, i1: int, i2: int, a: int, b: int, c: int) -> int:
 
 # Monotonically increases with real angle, but doesn't need expensive trigonometry.
 func pseudo_angle(dx: float, dy: float) -> float:
-	var p := dx / (abs(dx) + abs(dy))
+	var p := dx / (absf(dx) + absf(dy))
 
 	if (dy > 0):
 		return (3.0 - p) / 4.0 # [0..1]