Cleanup and document Counter

behaviours/counter.gd

@@ -1,18 +1,17 @@
 extends Node
 class_name Counter
 
+## Counts up or down from a starting value.
+
 
 signal changed(old: int, new: int)
 
 
 @export var starting_value: int
 
-var value: int
+var value: int = 0
 
 
-func _ready():
-	value = starting_value
-
 func change(amount: int):
 	var old = value
 	value = amount
@@ -27,3 +26,6 @@ func decrease(amount: int = 1):
 	if amount < 0:
 		Log.w(self, "Decreasing a counter by a negative value.")
 	change(value - amount)
+
+func _ready():
+	value = starting_value