diff --git a/evolve-die-repeat/game_manager.gd b/evolve-die-repeat/game_manager.gd
new file mode 100644
index 0000000..f55f894
--- /dev/null
+++ b/evolve-die-repeat/game_manager.gd
@@ -0,0 +1,19 @@
+extends Node
+
+var screen_size = Vector2(1920.0, 1080.0)  # Default screen size (this is a float for some reason)
+
+# TODO: This needs to be called from a script inheriting a CharacterBody2D (e.g. the player)
+# Alternative would be to pass the player reference to this script (which might be better?)
+func init_screen_size(x:float, y:float) -> void:
+	screen_size.x = x
+	screen_size.y = y
+
+# This can take a vector of any size (but should be 2d, other components are unused)
+func get_boundaried_position(position):
+	## clamp
+	#return position.clamp(Vector2.ZERO, screen_size)
+	
+	## periodic
+	position.x = wrapf(position.x, 0, screen_size.x)
+	position.y = wrapf(position.y, 0, screen_size.y)
+	return position
diff --git a/evolve-die-repeat/game_manager.gd.uid b/evolve-die-repeat/game_manager.gd.uid
new file mode 100644
index 0000000..9f3528c
--- /dev/null
+++ b/evolve-die-repeat/game_manager.gd.uid
@@ -0,0 +1 @@
+uid://vsbibc5fanou
diff --git a/evolve-die-repeat/molecular/molecular_player.gd b/evolve-die-repeat/molecular/molecular_player.gd
index 732e8c2..ec6b3bb 100644
--- a/evolve-die-repeat/molecular/molecular_player.gd
+++ b/evolve-die-repeat/molecular/molecular_player.gd
@@ -1,11 +1,11 @@
 extends CharacterBody2D
 
 @export var speed = 200
-var screen_size
 var damage = 1
 
 func _ready():
-	screen_size = get_viewport_rect().size
+	var screen_size = get_viewport_rect().size
+	GameManager.init_screen_size(screen_size.x, screen_size.y)
 
 func _process(delta):
 	velocity = Vector2.ZERO
@@ -20,15 +20,5 @@ func _process(delta):
 
 	move_and_collide(speed * velocity * delta)
 	#position += speed * velocity * delta
-	position = get_boundaried_position(position)
+	position = GameManager.get_boundaried_position(position)
 	
-	# periodic boundary
-	
-func get_boundaried_position(position):
-	## clamp
-	#return position.clamp(Vector2.ZERO, screen_size)
-	
-	## periodic
-	position.x = wrapf(position.x, 0, screen_size.x)
-	position.y = wrapf(position.y, 0, screen_size.y)
-	return position
diff --git a/evolve-die-repeat/molecular/nucleotide_prey.gd b/evolve-die-repeat/molecular/nucleotide_prey.gd
index c778e73..489d0b4 100644
--- a/evolve-die-repeat/molecular/nucleotide_prey.gd
+++ b/evolve-die-repeat/molecular/nucleotide_prey.gd
@@ -16,8 +16,11 @@ func _process(delta: float) -> void:
 func _physics_process(delta: float) -> void:
 	self.move(Vector3(randfn(0, 1), randfn(0, 1), 0))
 
-func move(destination: Vector3) -> void:
-	move_and_collide(Vector2(destination.x, destination.y))
+func move(motion: Vector3) -> void:
+	move_and_collide(Vector2(motion.x, motion.y))  # Moves along the given vector
+	
+	# Apply boundary to new position
+	position = GameManager.get_boundaried_position(position)
 
 func die() -> void:
 	sprite.play("Dying")
diff --git a/evolve-die-repeat/project.godot b/evolve-die-repeat/project.godot
index ac94b83..614572a 100644
--- a/evolve-die-repeat/project.godot
+++ b/evolve-die-repeat/project.godot
@@ -15,6 +15,10 @@ run/main_scene="uid://drgv154ei1vrl"
 config/features=PackedStringArray("4.5", "Forward Plus")
 config/icon="res://icon.svg"
 
+[autoload]
+
+GameManager="*res://game_manager.gd"
+
 [global_group]
 
 player="All scenes that constitute players should be added here."