Move the login message from Lua scripts into the config file. (#100)

-Provide a new API function: getLoginMessage which will fetch it from the config file.

resources/scripts/Init.lua

@@ -9,7 +9,7 @@ dofile(BASE_DIR.."Global.lua")
 -- Lua error handlers, and other server events like player login
 function onBeginLogin(player)
     -- send a welcome message
-    player:send_message("Welcome to Kawari!")
+    player:send_message(getLoginMessage())
 end
 
 function onCommandRequiredRankInsufficientError(player)

src/config.rs

@@ -216,6 +216,9 @@ pub struct WorldConfig {
     /// Enable packet compression for packets from the server. It's recommended to keep this on.
     #[serde(default = "WorldConfig::default_packet_compression")]
     pub enable_packet_compression: bool,
+    /// Default message received when logging into the world.
+    #[serde(default = "WorldConfig::default_login_message")]
+    pub login_message: String,
 }
 
 impl Default for WorldConfig {
@@ -230,6 +233,7 @@ impl Default for WorldConfig {
             rcon_password: Self::default_rcon_password(),
             enable_packet_obsfucation: Self::default_packet_obsfucation(),
             enable_packet_compression: Self::default_packet_compression(),
+            login_message: Self::default_login_message(),
         }
     }
 }
@@ -270,6 +274,10 @@ impl WorldConfig {
     fn default_packet_compression() -> bool {
         true
     }
+
+    fn default_login_message() -> String {
+        "Welcome to Kawari!".to_string()
+    }
 }
 
 impl WorldConfig {

src/world/lua.rs

@@ -716,6 +716,11 @@ pub fn load_init_script(lua: &mut Lua) -> mlua::Result<()> {
             Ok(())
         })?;
 
+    let get_login_message_func = lua.create_function(|_, _: ()| {
+        let config = get_config();
+        Ok(config.world.login_message)
+    })?;
+
     lua.set_app_data(ExtraLuaState::default());
     lua.globals().set("registerAction", register_action_func)?;
     lua.globals().set("registerEvent", register_event_func)?;
@@ -723,6 +728,8 @@ pub fn load_init_script(lua: &mut Lua) -> mlua::Result<()> {
         .set("registerCommand", register_command_func)?;
     lua.globals()
         .set("registerGMCommand", register_gm_command_func)?;
+    lua.globals()
+        .set("getLoginMessage", get_login_message_func)?;
 
     let effectsbuilder_constructor = lua.create_function(|_, ()| Ok(EffectsBuilder::default()))?;
     lua.globals()