private static void OnAmountIncreased(int addedAmount, int totalAmount, ResourceDisplay resourceDisplay)
 {
     resourceDisplay.UpdateAmount(addedAmount, totalAmount, ResourceOperationType.Add);
 }
 private static void OnAmountDecreased(int usedAmount, int totalAmount, ResourceDisplay resourceDisplay)
 {
     resourceDisplay.UpdateAmount(usedAmount, totalAmount, ResourceOperationType.Substract);
 }
 private static void OnAmountSet(int totalAmount, ResourceDisplay resourceDisplay)
 {
     resourceDisplay.UpdateAmount(0, totalAmount, ResourceOperationType.Set);
 }