[Games] Programmatic games by storing information as data (#45)

* Define games as structs

* Create table of response types

* Ensure serde is always included

* Remove server_ prefix in GenericResponse

* Make players online/max non-optional in generic response

* Use already existing minecraft server enum

* Implement ExtraResponses to prevent cloning when creating generic

* Add game definitions

* Add doc comments to generic types

* Include players in gamespy extra responses

* Add custom response types for TheShip and FFOW

* Cargo format differing files

* Final cleanup

examples/generic.rs

@@ -0,0 +1,61 @@
+use gamedig::{protocols::GenericResponse, query, GDResult, GAMES};
+
+use std::net::IpAddr;
+
+fn generic_query(game_name: &str, addr: &IpAddr, port: Option<u16>) -> GDResult<GenericResponse> {
+    let game = GAMES.get(game_name).expect("Game doesn't exist");
+
+    println!("Querying {:?} with {:?}", addr, game);
+
+    let response = query(game, addr, port)?;
+
+    println!("{:?}", response);
+
+    Ok(response)
+}
+
+fn main() {
+    let mut args = std::env::args().skip(1);
+
+    let game_name = args.next().expect("Must provide a game name");
+    let addr: IpAddr = args
+        .next()
+        .map(|s| s.parse().unwrap())
+        .expect("Must provide address");
+    let port: Option<u16> = args.next().map(|s| s.parse().unwrap());
+
+    generic_query(&game_name, &addr, port).unwrap();
+}
+
+#[cfg(test)]
+mod test {
+    use gamedig::GAMES;
+    use std::net::{IpAddr, Ipv4Addr};
+
+    use super::generic_query;
+
+    const ADDR: IpAddr = IpAddr::V4(Ipv4Addr::LOCALHOST);
+
+    fn test_game(game_name: &str) {
+        assert!(generic_query(game_name, &ADDR, None).is_err());
+    }
+
+    #[test]
+    fn battlefield() { test_game("bf1942"); }
+
+    #[test]
+    fn minecraft() { test_game("mc"); }
+
+    #[test]
+    fn tf2() { test_game("tf2"); }
+
+    #[test]
+    fn quake() { test_game("quake3a"); }
+
+    #[test]
+    fn all_games() {
+        for game_name in GAMES.keys() {
+            test_game(game_name);
+        }
+    }
+}