Add missing 'num' implementations on models

Add missing 'num' implementations from the following models:

- `channel::{ChannelType, MessageType}`
- `gateway::GameType`

1 files changed, 13 insertions, 0 deletions

diff --git a/src/model/gateway.rs b/src/model/gateway.rs
index 27a541b..c097c6f 100644
--- a/src/model/gateway.rs
+++ b/src/model/gateway.rs
@@ -192,6 +192,19 @@ enum_number!(
     }
 );
 
+impl GameType {
+    pub fn num(&self) -> u64 {
+        use self::GameType::*;
+
+        match *self {
+            Playing => 0,
+            Streaming => 1,
+            Listening => 2,
+            Watching => 3,
+        }
+    }
+}
+
 impl Default for GameType {
     fn default() -> Self { GameType::Playing }
 }