implement ToBase36 for u64; room id to u64; sprite id to u64; tile id to u64; sprite.dialogue -> sprite.dialogue_id

src/lib.rs

@@ -76,11 +76,22 @@ fn test_from_base36() {
     assert_eq!(from_base36("11"), 37);
 }
 
-fn to_base36(input: u64) -> String {
-    format!("{}", radix_36(input))
+/// this doesn't work inside ToBase36 for some reason
+fn to_base36(int: u64) -> String {
+    format!("{}", radix_36(int))
+}
+
+pub trait ToBase36 {
+    fn to_base36(&self) -> String;
+}
+
+impl ToBase36 for u64 {
+    fn to_base36(&self) -> String {
+        to_base36(*self)
+    }
 }
 
 #[test]
 fn test_to_base36() {
-    assert_eq!(to_base36(37), "11");
+    assert_eq!((37 as u64).to_base36(), "11");
 }