fix buff unlock

core/goals/goal_requirement_data.gd

@@ -40,3 +40,28 @@ func get_summary_text() -> String:
 
 	var currency_name: String = GameState.get_currency_name(get_currency_id())
 	return "%s %s" % [get_amount().to_string_suffix(2), currency_name]
+
+func get_progress() -> float:
+	if not is_valid():
+		return 0.0
+	
+	var current_amount: BigNumber = GameState.get_total_currency_acquired_by_id(get_currency_id())
+	var required_amount: BigNumber = get_amount()
+	
+	if required_amount.mantissa <= 0.0:
+		return 1.0
+	
+	if current_amount.is_greater_than(required_amount) or current_amount.is_equal_to(required_amount):
+		return 1.0
+	
+	if current_amount.mantissa <= 0.0:
+		return 0.0
+	
+	var current_log: float = log(maxf(current_amount.mantissa, 0.0001)) / log(10) + float(current_amount.exponent)
+	var required_log: float = log(maxf(required_amount.mantissa, 0.0001)) / log(10) + float(required_amount.exponent)
+	
+	if required_log <= 0.0:
+		return 1.0
+	
+	var progress: float = current_log / required_log
+	return clampf(progress, 0.0, 1.0)