chore: update join function (#177)

onchain/src/systems/game_actions.cairo

@@ -14,7 +14,7 @@ trait IGameActions<T> {
     ) -> usize;
     fn start(ref self: T);
 
-    fn join(ref self: T);
+    fn join(ref self: T, username: felt252, selected_color: felt252, game_id: u64);
 
     fn move(ref self: T);
 
@@ -47,7 +47,7 @@ pub mod GameActions {
 
     #[derive(Copy, Drop, Serde)]
     #[dojo::event]
-    pub struct GameStarted{
+    pub struct GameStarted {
         #[key]
         pub game_id: usize,
         pub time_stamp: u64
@@ -95,44 +95,75 @@ pub mod GameActions {
         }
 
         fn start(ref self: ContractState) {
-             // Get world state
-             let mut world = self.world_default();
-
-             // Get caller address
-             let caller: ContractAddress = get_caller_address();
- 
-             // Assign a game id
-             let mut game_id: usize = 999;
- 
-             //get the game state
-             let mut game: Game = world.read_model(game_id);
- 
-             // get the caller's user name
-             let caller_username: felt252 = self.get_username_from_address(caller);
- 
-             //assert that caller with the user_name is game creator
-             assert(game.created_by == caller_username, Errors::ONLY_GAME_CREATOR);
- 
-             //ensure that game status is pending
-             assert(game.game_status == GameStatus::Pending, Errors::GAME_NOT_PENDING);
- 
-             //change game status to Ongoing
-             game.game_status = GameStatus::Ongoing;
- 
-             //make player_green the first player by making player green the nest player
-             game.player_green = game.next_player;
- 
-             //update the game model
-             world.write_model(@game);
- 
-             //get the current block timestamp
-             let time_stamp: u64 = get_block_timestamp();
- 
-             //emit event
-             world.emit_event(@GameStarted { game_id, time_stamp });
+            // Get world state
+            let mut world = self.world_default();
+
+            // Get caller address
+            let caller: ContractAddress = get_caller_address();
+
+            // Assign a game id
+            let mut game_id: usize = 999;
+
+            //get the game state
+            let mut game: Game = world.read_model(game_id);
+
+            // get the caller's user name
+            let caller_username: felt252 = self.get_username_from_address(caller);
+
+            //assert that caller with the user_name is game creator
+            assert(game.created_by == caller_username, Errors::ONLY_GAME_CREATOR);
+
+            //ensure that game status is pending
+            assert(game.game_status == GameStatus::Pending, Errors::GAME_NOT_PENDING);
+
+            //change game status to Ongoing
+            game.game_status = GameStatus::Ongoing;
+
+            //make player_green the first player by making player green the nest player
+            game.player_green = game.next_player;
+
+            //update the game model
+            world.write_model(@game);
+
+            //get the current block timestamp
+            let time_stamp: u64 = get_block_timestamp();
+
+            //emit event
+            world.emit_event(@GameStarted { game_id, time_stamp });
         }
 
-        fn join(ref self: ContractState) {}
+        fn join(ref self: ContractState, username: felt252, selected_color: felt252, game_id: u64) {
+            // Get world state
+            let mut world = self.world_default();
+
+            // Get caller address
+            let caller: ContractAddress = get_caller_address();
+
+            //get the game state
+            let mut game: Game = world.read_model(game_id);
+            //
+
+            game.player_red = match selected_color {
+                0 => 0,
+                1 => username,
+                _ => 0
+            };
+            game.player_yellow = match selected_color {
+                0 => 0,
+                1 => username,
+                _ => 0
+            };
+            game.player_blue = match selected_color {
+                0 => 0,
+                1 => username,
+                _ => 0
+            };
+            game.player_green = match selected_color {
+                0 => 0,
+                1 => username,
+                _ => 0
+            };
+        }
 
         fn move(ref self: ContractState) {}