diff --git a/frontend/static/js/api/game/Ball.js b/frontend/static/js/api/game/Ball.js
index 31c734a..bcd0ca1 100644
--- a/frontend/static/js/api/game/Ball.js
+++ b/frontend/static/js/api/game/Ball.js
@@ -1,22 +1,45 @@
+import { Game } from "./Game.js";
+import { Point } from "./Point.js";
 
 
 class Ball
 {
+    /**
+     * 
+     * @param {Game} game 
+     * @param {Number} position_x 
+     * @param {Number} position_y 
+     * @param {Number} velocity_x 
+     * @param {Number} velocity_y 
+     */
     constructor(game, position_x, position_y, velocity_x, velocity_y)
     {
+        /**
+         * @type {Game}
+         */
         this.game = game;
+        /**
+         * @type {Number}
+         */
         this.position_x = position_x;
+        /**
+         * @type {Number}
+         */
         this.position_y = position_y;
+        /**
+         * @type {Number}
+         */
         this.velocity_x = velocity_x;
+        /**
+         * @type {Number}
+         */
         this.velocity_y = velocity_y;
     }
 
-    _collision(old_pos_x, old_pos_y, new_pos_x, new_pos_y)
-    {
-
-        return 0;
-    }
-
+    /**
+     * 
+     * @param {CanvasRenderingContext2D} ctx 
+     */
     draw(ctx)
     {
         ctx.rect(this.position_x, this.position_y, this.game.config.ball_size, this.game.config.ball_size);
@@ -24,8 +47,14 @@ class Ball
 
     render()
     {
-        new_pos_x = this.position_x + this.velocity_x * this.game.time.deltaTime();
-        new_pos_y = this.position_y + this.velocity_y * this.game.time.deltaTime();
+        /**
+         * @type {Number}
+         */
+        let new_pos_x = this.position_x + this.velocity_x * this.game.time.deltaTime();
+        /**
+         * @type {Number}
+         */
+        let new_pos_y = position_y + this.velocity_y * this.game.time.deltaTime();
 
         if (this._collision(this.position_x, this.position_y, new_pos_x, new_pos_y))
         {
diff --git a/frontend/static/js/api/game/Game.js b/frontend/static/js/api/game/Game.js
index f5e708d..08253b0 100644
--- a/frontend/static/js/api/game/Game.js
+++ b/frontend/static/js/api/game/Game.js
@@ -1,7 +1,6 @@
 import { sleep } from "../../utils/sleep.js";
 import { Ball } from "./Ball.js";
 import { GameConfig } from "./GameConfig.js"
-import { MyPlayer } from "./MyPlayer.js";
 import { Player } from "./Player.js";
 import { Time } from "./Time.js";
 import { Wall } from "./Wall.js";
@@ -20,6 +19,10 @@ class Game
         this.id = id;
     }
 
+    /**
+     * 
+     * @returns {Number}
+     */
     async init()
     {
         let response = await this.client._get(`/api/games/${this.id}`);
@@ -35,7 +38,7 @@ class Game
         this.finished = response_data.finished;
         this.winner_id = this.finished ? response_data.winner_id : undefined;
 
-        if (this.finished === true || this.started === false)
+        if (this.finished === true)
             return 0;
 
         this.config = new GameConfig(this.client);
@@ -51,6 +54,10 @@ class Game
         return 0;
     }
 
+    /**
+     * 
+     * @param {CanvasRenderingContext2D} ctx 
+     */
     draw_sides(ctx)
     {
         this.walls.forEach(wall => {
@@ -61,6 +68,10 @@ class Game
         });
     }
 
+    /**
+     * 
+     * @param {CanvasRenderingContext2D} ctx 
+     */
     draw(ctx)
     {
         ctx.clearRect(0, 0, this.config.size_x, this.config.size_y);
@@ -91,6 +102,7 @@ class Game
 
     _receive_player_join(player_data)
     {
+        console.log(player_data)
         let index = this.players.indexOf((player) => player.id === player_data.user_id);
 
         this.players[index].is_connected = true;
@@ -126,7 +138,6 @@ class Game
 
     _receive(data)
     {
-        console.log(data)
         if (data.detail === "update_paddle")
             this._receive_update_paddle(data);
         else if (data.detail === "update_ball")
@@ -147,26 +158,13 @@ class Game
         this.walls = [];
         const walls_data = data.walls;
         walls_data.forEach((wall_data) => {
-            this.walls.push(new Wall(wall_data.rail_start_x,
-                                     wall_data.rail_start_y,
-                                     wall_data.rail_stop_x,
-                                     wall_data.rail_stop_y));
+            this.walls.push(new Wall().from_json(wall_data));
         });
 
         this.players = []
         const players_data = data.players;
         players_data.forEach((player_data) => {
-            this.players.push(new Player(player_data.user_id,
-                this,
-                player_data.rail_start_x,
-                player_data.rail_start_y,
-                player_data.rail_stop_x,
-                player_data.rail_stop_y,
-                player_data.nb_goal,
-                player_data.position.position,
-                player_data.is_connected,
-            ));
-    
+            this.players.push(new Player(this).from_json(player_data));
         });
 
         this._inited = true;
@@ -180,7 +178,7 @@ class Game
 
     async join()
     {
-        if (this.started !== true || this.finished === true)
+        if (this.finished === true)
         {
             console.error("The Game is not currently ongoing.");
             return;
diff --git a/frontend/static/js/api/game/GameConfig.js b/frontend/static/js/api/game/GameConfig.js
index ebf8116..dab00ad 100644
--- a/frontend/static/js/api/game/GameConfig.js
+++ b/frontend/static/js/api/game/GameConfig.js
@@ -20,21 +20,56 @@ class GameConfig
 
         let response_data = await response.json();
 
-        
+        /**
+         * @type {Number}
+         */
         this.size_x = response_data.MAP_SIZE_X;
+        /**
+         * @type {Number}
+         */
         this.size_y = response_data.MAP_SIZE_Y;
+        /**
+         * @type {Number}
+         */
         this.center_x = this.size_x / 2;
+        /**
+         * @type {Number}
+         */
         this.center_y = this.size_y / 2;
 
+        /**
+         * @type {Number}
+         */
         this.paddle_ratio = response_data.PADDLE_RATIO;
+        /**
+         * @type {Number}
+         */
         this.paddle_speed_per_second_max = response_data.PADDLE_SPEED_PER_SECOND_MAX;
+        /**
+         * @type {Number}
+         */
         this.wall_ratio = response_data.WALL_RATIO;
 
+        /**
+         * @type {Number}
+         */
         this.ball_speed_inc = response_data.BALL_SPEED_INC;
+        /**
+         * @type {Number}
+         */
         this.ball_speed_start = response_data.BALL_SPEED_START;
 
+        /**
+         * @type {Number}
+         */
         this.ball_size = response_data.BALL_SIZE;
+        /**
+         * @type {Number}
+         */
         this.ball_spawn_x = this.center_x;
+        /**
+         * @type {Number}
+         */
         this.ball_spawn_y = this.center_y;
 
         return 0;
diff --git a/frontend/static/js/api/game/MyPlayer.js b/frontend/static/js/api/game/MyPlayer.js
index a75c19b..552d9f2 100644
--- a/frontend/static/js/api/game/MyPlayer.js
+++ b/frontend/static/js/api/game/MyPlayer.js
@@ -1,17 +1,35 @@
 import { Player } from "./Player.js";
-
+import { Client } from "../client.js"
+import { Game } from "./Game.js";
+import { Segment } from "./Segment.js";
 
 class MyPlayer extends Player
 {
-    constructor(client, game, rail_start_x, rail_start_y, rail_stop_x, rail_stop_y, nb_goal, positon)
+    /**
+     * 
+     * @param {Client} client 
+     * @param {Game} game 
+     * @param {Segment} rail 
+     * @param {Number} nb_goal 
+     * @param {Number} position 
+     */
+    constructor(client, game, rail, nb_goal, position)
     {
-        super(client.me.id, game, rail_start_x, rail_start_y, rail_stop_x, rail_stop_y, nb_goal, positon, true);
+        super(game, client.me.id, rail, nb_goal, position, true);
+        /**
+         * @type {Client}
+         */
         this.client = client;
     }    
 
+    /**
+     * 
+     * @param {[string]} keys_pressed 
+     * @returns 
+     */
     update_paddle(keys_pressed)
     {
-        let new_pos = this.positon;
+        let new_pos = this.position;
 
         if (keys_pressed.includes("s"))
             new_pos -= this.game.config.paddle_speed_per_second_max * this.game.time.deltaTimeSecond() * 1.0;
@@ -20,14 +38,19 @@ class MyPlayer extends Player
         new_pos = Math.max(0 + this.game.config.paddle_ratio / 2, new_pos);
         new_pos = Math.min(1 - this.game.config.paddle_ratio / 2, new_pos);
 
-        if (this.positon === new_pos)
+        if (this.position === new_pos)
             return;
 
-        this.positon = new_pos;
+        this.position = new_pos;
 
-        this.game._send_paddle_position(this.positon, this.game.time._current_frame);
+        this.game._send_paddle_position(this.position, this.game.time._current_frame);
     }
 
+    /**
+     * 
+     * @param {Number} new_position 
+     * @param {Number} time 
+     */
     update_pos(new_position, time)
     {
         let position_verified = new_position;
@@ -36,14 +59,14 @@ class MyPlayer extends Player
 
         let sign = this - new_position >= 0 ? 1 : -1;
 
-        let distance = Math.abs(this.positon - new_position);
+        let distance = Math.abs(this.position - new_position);
 
         let distance_max = time_diff * this.game.config.paddle_speed_per_second_max;
 
         if (distance > distance_max)
             position_verified = distance_max * sign;
 
-        this.positon = position_verified;
+        this.position = position_verified;
     }
 }
 
diff --git a/frontend/static/js/api/game/Player.js b/frontend/static/js/api/game/Player.js
index cc838ea..44ee621 100644
--- a/frontend/static/js/api/game/Player.js
+++ b/frontend/static/js/api/game/Player.js
@@ -1,52 +1,153 @@
+import { Game } from "./Game.js";
+import { Point } from "./Point.js";
+import { Segment } from "./Segment.js";
 
 class Player
 {
-    constructor(id, game, rail_start_x, rail_start_y, rail_stop_x, rail_stop_y, nb_goal, positon, is_connected)
+    /**
+     * 
+     * @param {Number} id 
+     * @param {Game} game 
+     * @param {Segment} rail 
+     * @param {Number} nb_goal 
+     * @param {Number} position 
+     * @param {Boolean} is_connected 
+     */
+    constructor(game, id, rail, nb_goal, position, is_connected)
     {
-        this.is_connected = is_connected;
-        this.id = id;
-        this.positon = positon;
-        this.nb_goal = nb_goal;
+        /**
+         * @type {Game}
+         */
         this.game = game;
 
-        this.rail_start_x = rail_start_x;
-        this.rail_start_y = rail_start_y;
-        this.rail_stop_x = rail_stop_x;
-        this.rail_stop_y = rail_stop_y;
+        /**
+         * @type {Boolean}
+         */
+        this.is_connected = is_connected;
 
-        this.rail_size = Math.abs(this.rail_stop_x - this.rail_start_x) + Math.abs(this.rail_stop_y - this.rail_start_y) 
-        
+        /**
+         * @type {Number}
+         */
+        this.id = id;
+
+        /**
+         * @type {Number}
+         */
+        this.position = position;
+
+         /**
+          * @type {Number}
+          */
+        this.nb_goal = nb_goal;
+ 
+        /**
+         * @type {Segment}
+         */
+        this.rail = rail === undefined ? new Segment() : rail;
+
+        /**
+         * @type {Number}
+         */
+        this.rail_size = Math.abs(this.rail.stop.x - this.rail.start.x) + Math.abs(this.rail.stop.y - this.rail.start.y);
+ 
+        /**
+         * @type {Number}
+         */
         this.paddle_size = this.rail_size * this.game.config.paddle_ratio;
+ 
+        /**
+         * @type {Number}
+         */
+        this.diff_x = this.rail.stop.x - this.rail.start.x;
 
-        this.diff_x = this.rail_stop_x - this.rail_start_x,
-        this.diff_y = this.rail_stop_y - this.rail_start_y;
+        /**
+         * @type {Number}
+         */
+        this.diff_y = this.rail.stop.y - this.rail.start.y;
     }
 
+    /**
+     * 
+     * @param {Number} new_position 
+     */
     update_pos(new_position, time)
     {
-        this.positon = new_position;
+        this.position = new_position;
     }
 
+    /**
+     * @param {CanvasRenderingContext2D} ctx
+     */  
     draw(ctx)
     {
         if (this.is_connected === false)
         {
-            ctx.moveTo(this.rail_start_x, this.rail_start_y);
-            ctx.lineTo(this.rail_stop_x, this.rail_stop_y);
+            ctx.moveTo(this.rail.start.x, this.rail.start.y);
+            ctx.lineTo(this.rail.stop.x, this.rail.stop.y);
             return;
         }
-        let paddle_pos_x = this.rail_start_x + this.diff_x * this.positon,
-            paddle_pos_y = this.rail_start_y + this.diff_y * this.positon;
+        let paddle_pos = new Point(this.rail.start.x + this.diff_x * this.position,
+                                   this.rail.start.y + this.diff_y * this.position);
 
         
-        let start_x = paddle_pos_x - (this.diff_x * (this.paddle_size / 2 / this.rail_size)),
-            start_y = paddle_pos_y - (this.diff_y * (this.paddle_size / 2 / this.rail_size)),
-            stop_x = paddle_pos_x + (this.diff_x * (this.paddle_size / 2 / this.rail_size)),
-            stop_y = paddle_pos_y + (this.diff_y * (this.paddle_size / 2 / this.rail_size));
+        let start_x = paddle_pos.x - (this.diff_x * (this.paddle_size / 2 / this.rail_size)),
+            start_y = paddle_pos.y - (this.diff_y * (this.paddle_size / 2 / this.rail_size)),
+            stop_x = paddle_pos.x + (this.diff_x * (this.paddle_size / 2 / this.rail_size)),
+            stop_y = paddle_pos.y + (this.diff_y * (this.paddle_size / 2 / this.rail_size));
 
         ctx.moveTo(start_x, start_y);
         ctx.lineTo(stop_x, stop_y);
     }
+
+    from_json(data)
+    {
+        /**
+        * @type {Boolean}
+        */
+        
+        this.is_connected = data.is_connected;
+        /**
+         * @type {Number}
+         */
+        this.id = data.user_id;
+        
+        /**
+         * @type {Number}
+         */
+        this.position = data.position.position ;
+
+        /**
+         * @type {Number}
+         */
+        this.nb_goal = data.nb_goal;
+
+        /**
+         * @type {Segment}
+         */
+        this.rail = this.rail.from_json(data.rail);
+
+        /**
+         * @type {Number}
+         */
+        this.rail_size = Math.abs(this.rail.stop.x - this.rail.start.x) + Math.abs(this.rail.stop.y - this.rail.start.y);
+
+        /**
+         * @type {Number}
+         */
+        this.paddle_size = this.rail_size * this.game.config.paddle_ratio;
+
+        /**
+         * @type {Number}
+         */
+        this.diff_x = this.rail.stop.x - this.rail.start.x;
+        
+        /**
+         * @type {Number}
+         */
+        this.diff_y = this.rail.stop.y - this.rail.start.y;
+
+        return this
+    }
 }
 
 export { Player }
\ No newline at end of file
diff --git a/frontend/static/js/api/game/Point.js b/frontend/static/js/api/game/Point.js
new file mode 100644
index 0000000..3280668
--- /dev/null
+++ b/frontend/static/js/api/game/Point.js
@@ -0,0 +1,30 @@
+
+
+class Point
+{
+    /**
+     * @param {Number} x
+     * @param {Number} y
+     */
+    constructor(x, y)
+    {
+        /**
+         * @type {Number}
+         */
+        this.x = x;
+        /**
+         * @type {Number}
+         */
+        this.y = y;
+    }
+
+    from_json(data)
+    {
+        this.x = data.x
+        this.y = data.y
+
+        return this
+    }
+}
+
+export { Point }
\ No newline at end of file
diff --git a/frontend/static/js/api/game/Segment.js b/frontend/static/js/api/game/Segment.js
new file mode 100644
index 0000000..7d6fedc
--- /dev/null
+++ b/frontend/static/js/api/game/Segment.js
@@ -0,0 +1,33 @@
+import { Point } from "./Point.js"
+
+class Segment
+{
+    /**
+     * @param {Point} start
+     * @param {Point} stop
+     */
+    constructor(start, stop)
+    {
+        this.start = start === undefined ? new Point() : start;
+        this.stop = stop === undefined ? new Point() : stop;
+    }
+
+    /**
+     * @param {CanvasRenderingContext2D} ctx 
+     */
+    draw(ctx)
+    {
+        ctx.moveTo(this.start.x, this.start.y);
+        ctx.lineTo(this.stop.x, this.stop.y);
+    }
+
+    from_json(data)
+    {
+        this.start = this.start.from_json(data.start);
+        this.stop = this.stop.from_json(data.stop);
+        
+        return this;
+    }
+}
+
+export { Segment }
\ No newline at end of file
diff --git a/frontend/static/js/api/game/Time.js b/frontend/static/js/api/game/Time.js
index da180f8..e8885b9 100644
--- a/frontend/static/js/api/game/Time.js
+++ b/frontend/static/js/api/game/Time.js
@@ -4,7 +4,14 @@ class Time
 {
     constructor()
     {
+        /**
+         * @type {Number}
+         */
         this._last_frame = undefined;
+
+        /**
+         * @type {Number}
+         */
         this._current_frame = undefined;
     }
 
diff --git a/frontend/static/js/api/game/Wall.js b/frontend/static/js/api/game/Wall.js
index 8d027c6..be69f42 100644
--- a/frontend/static/js/api/game/Wall.js
+++ b/frontend/static/js/api/game/Wall.js
@@ -1,19 +1,28 @@
-
+import { Segment } from "./Segment.js";
 
 class Wall
 {
-    constructor (rail_start_x, rail_start_y, rail_stop_x, rail_stop_y)
+    /**
+     * @param {Segment} start
+     */
+    constructor (rail)
     {
-        this.rail_start_x = rail_start_x;
-        this.rail_start_y = rail_start_y;
-        this.rail_stop_x = rail_stop_x;
-        this.rail_stop_y = rail_stop_y;
+        /**
+         * @type {Segment}
+         */
+        this.rail = rail === undefined ? new Segment() : rail;
     }
 
     draw(ctx)
     {
-        ctx.moveTo(this.rail_start_x, this.rail_start_y);
-        ctx.lineTo(this.rail_stop_x, this.rail_stop_y);
+        this.rail.draw(ctx);
+    }
+
+    from_json(data)
+    {
+        this.rail = this.rail.from_json(data.rail)
+
+        return this
     }
 }
 
diff --git a/frontend/static/js/views/GameView.js b/frontend/static/js/views/GameView.js
index e0fdc4f..2b8e3c7 100644
--- a/frontend/static/js/views/GameView.js
+++ b/frontend/static/js/views/GameView.js
@@ -1,9 +1,7 @@
 import { client } from "../index.js";
 import { Game } from "../api/game/Game.js";
 import AbstractView from "./abstracts/AbstractView.js";
-import { Time } from "../api/game/Time.js";
 import { MyPlayer } from "../api/game/MyPlayer.js";
-import { Ball } from "../api/game/Ball.js";
 
 export default class extends AbstractView
 {
@@ -35,6 +33,9 @@ export default class extends AbstractView
         if (canva === null)
             return 1;
 
+        /**
+         * @type {CanvasRenderingContext2D}
+         */
         let ctx = canva.getContext('2d');
 
         ctx.beginPath();
@@ -71,7 +72,7 @@ export default class extends AbstractView
 		document.removeEventListener('keyup', this.keyStretchHandler);
     }
 
-    async start_game()
+    async join_game()
     {
         await this.game.join()
 
@@ -89,16 +90,13 @@ export default class extends AbstractView
             let my_player = this.game.players[index];
             this.my_player = new MyPlayer(client,
                                           this.game,
-                                          my_player.rail_start_x,
-                                          my_player.rail_start_y,
-                                          my_player.rail_stop_x,
-                                          my_player.rail_stop_y,
-                                          my_player.nb_goal,
-                                          my_player.positon,
+                                          my_player.rail,
+                                          my_player.nb_gool,
+                                          my_player.position,
                                         );
             this.game.players[index] = this.my_player;
         }
-        
+
         this.register_key()
 
         this.render_game();
@@ -108,8 +106,8 @@ export default class extends AbstractView
     {
         document.getElementById("game-state").innerText = this.game.state;
 
-        if (this.game.started === true && this.game.finished === false)
-            await this.start_game();
+        if (this.game.finished === false)
+            await this.join_game();
     }
 
 	async postInit()
@@ -124,7 +122,7 @@ export default class extends AbstractView
 
     async leavePage()
     {
-        if (this.game.started === true && this.game.finished === false)
+        if (this.game.finished === false)
         {
             this.game.leave();
             this.game = undefined;
diff --git a/games/consumers.py b/games/consumers.py
index 837e02c..3b457c8 100644
--- a/games/consumers.py
+++ b/games/consumers.py
@@ -23,6 +23,7 @@ class GameWebSocket(WebsocketConsumer):
         super().__init__(*args, **kwargs)
         self.channel_name = "games"
         self.group_name = "games"
+        self.member = None
 
     def connect(self):
 
@@ -30,20 +31,23 @@ class GameWebSocket(WebsocketConsumer):
         if (self.user.pk is None):
             self.user.pk = 0
 
-        self.channel_layer.group_add(self.group_name, self.channel_name)
+        self.accept()
 
         self.game_id = int(self.scope['url_route']['kwargs']['game_id'])
         
         self.game: Game = game_manager.get(self.game_id)
-
+        
         if (self.game is None):
-            self.send("Game not found.")
-            self.disconnect(1017)
-
+            self.send(text_data=json.dumps({"detail": "Game not found"}))
+            self.disconnect(1404)
+            return
+        
         self.member: Player | Spectator = self.game.join(self.user.pk, self)
     
     def disconnect(self, code):
-        self.member.disconnect()
+        if (self.member is not None):
+            self.member.disconnect()
+        super().disconnect(code)
 
     def receive(self, text_data: str = None, bytes_data: bytes = None):
         
diff --git a/games/objects/Ball.py b/games/objects/Ball.py
index 5fa8725..4d2dbcb 100644
--- a/games/objects/Ball.py
+++ b/games/objects/Ball.py
@@ -7,10 +7,12 @@ class Ball:
         self.postion_y: float = config.BALL_SPAWN_POS_Y
         self.velocity_x: float = config.BALL_SPEED_START
         self.velocity_y: float = config.BALL_SPEED_START
+        self.size: float = config.BALL_SIZE
     
     def to_dict(self):
         
         data: dict = {
+            "size": self.size,
             "position_x": self.postion_x,
             "position_y": self.postion_y,
             "velocity_x": self.velocity_x,
diff --git a/games/objects/Game.py b/games/objects/Game.py
index 7db38c7..72b6fa8 100644
--- a/games/objects/Game.py
+++ b/games/objects/Game.py
@@ -9,6 +9,8 @@ from .Ball import Ball
 from .Player import Player
 from .Spectator import Spectator
 from .Wall import Wall
+from .Point import Point
+from .Segment import Segment
 
 import math
 
@@ -34,30 +36,34 @@ class Game(AbstractRoom):
 
         players_id: list[int] = self.model.get_players_id()
 
-        self.nb_sides = len(players_id) * 2
+        nb_sides = len(players_id) * 2
         
-        self.polygon: list[tuple[float, float]] = []
+        polygon: list[Point] = []
         
-        for i in range(self.nb_sides):
+        for i in range(nb_sides):
 
-            angle: float = (i * 2 * math.pi / self.nb_sides) + (math.pi * 3 / 4)
+            angle: float = (i * 2 * math.pi / nb_sides) + (math.pi * 3 / 4)
 
             x: float = config.MAP_CENTER_X + radius * math.cos(angle)
             y: float = config.MAP_CENTER_Y + radius * math.sin(angle)
             
-            self.polygon.append((x, y))
+            polygon.append(Point(x, y))
+        
+        segments: list[Point] = []
+        for i in range(nb_sides):
+            segments.append(Segment(polygon[i], polygon[(i + 1) % nb_sides]))
 
         self.players: list[Player] = []
         for i, player_id in enumerate(players_id):
-            player = Player(self, player_id, None, *self.polygon[i * 2], *self.polygon[(i * 2 + 1) % self.nb_sides])
+            player = Player(self, player_id, None, segments[i * 2])
             self.players.append(player)
     
         self.spectators: list[Spectator] = []
         
         self.walls: list[Wall] = []
         
-        for i in range(1, self.nb_sides, 2):
-            self.walls.append(Wall(*self.polygon[i], *self.polygon[(i + 1) % self.nb_sides]))
+        for i in range(1, nb_sides, 2):
+            self.walls.append(Wall(segments[i]))
 
         self._updated_players: list[Player] = []
 
@@ -86,12 +92,11 @@ class Game(AbstractRoom):
     
     def get_player_by_user_id(self, user_id: int) -> Player:
         for player in self.players:
-            player: Player
             if (player.user_id == user_id):
                 return player
         return None
     
-    def _send_game_data(self, member: AbstractRoomMember):
+    def _send_game_data(self, member: Spectator | Player):
         member.send("init_game", self.to_dict())
     
     def everbody_is_here(self):
@@ -109,20 +114,24 @@ class Game(AbstractRoom):
         
         if (player.is_connected()):
             player.disconnect(1001)
-        
-        player.connect(socket)
 
+        player.socket = socket
+        
         if (self.everbody_is_here()):
+            print("chie moi dessu")
             print("start")
             self.start()
-        
+
+        self._update_player(player)
+
         return player
     
     def _update_player(self, player: Player):
         self._updated_players.append(player)
     
     def _player_leave(self, player: Player):
-        self._updated_players.append(player)
+        print(player.socket)
+        self._update_player(player)
     
     def _spectator_join(self, user_id: int, socket: WebsocketConsumer):
         
@@ -130,8 +139,6 @@ class Game(AbstractRoom):
         
         self.spectators.append(spectator)
         
-        spectator.accept()
-        
         return spectator
     
     def _spectator_leave(self, spectator: Spectator):
diff --git a/games/objects/GameManager.py b/games/objects/GameManager.py
index d953690..1f5eba5 100644
--- a/games/objects/GameManager.py
+++ b/games/objects/GameManager.py
@@ -9,7 +9,7 @@ class GameManager():
     
     def get(self, game_id: int) -> Game:
         
-        if (not GameModel.objects.filter(pk = game_id, started = True, finished = False).exists()):
+        if (not GameModel.objects.filter(pk = game_id, finished = False).exists()):
             return None
         
         for game in self._game_list:
diff --git a/games/objects/Player.py b/games/objects/Player.py
index f9a10ea..9d6ca6d 100644
--- a/games/objects/Player.py
+++ b/games/objects/Player.py
@@ -6,6 +6,8 @@ from channels.generic.websocket import WebsocketConsumer
 
 from .Position import Position
 from .Spectator import Spectator
+from .Point import Point
+from .Segment import Segment
 
 from typing import TYPE_CHECKING
 
@@ -15,7 +17,7 @@ if TYPE_CHECKING:
 
 class Player(Spectator):
     
-    def __init__(self, game: Game, user_id: int, socket: WebsocketConsumer, rail_start_x: float, rail_start_y: float, rail_stop_x: float, rail_stop_y: float) -> None:
+    def __init__(self, game: Game, user_id: int, socket: WebsocketConsumer, rail: Segment) -> None:
         
         super().__init__(user_id, socket, game)
         
@@ -23,10 +25,7 @@ class Player(Spectator):
         
         self.nb_goal: int = 0
         
-        self.rail_start_x: float = rail_start_x
-        self.rail_start_y: float = rail_start_y
-        self.rail_stop_x: float = rail_stop_x
-        self.rail_stop_y: float = rail_stop_y
+        self.rail: Segment = rail
         
     def receive(self, data: dict):
         
@@ -106,19 +105,17 @@ class Player(Spectator):
     
     def disconnect(self, code: int = 1000):
         self.socket = None
+        print("bozoman")
         self.game.leave(self)
     
-    def to_dict(self):
+    def to_dict(self) -> dict:
         
         data = {
             "user_id": self.user_id,
             "position": self.position.to_dict(),
             "nb_goal": self.nb_goal,
             
-            "rail_start_x": self.rail_start_x,
-            "rail_start_y": self.rail_start_y,
-            "rail_stop_x": self.rail_stop_x,
-            "rail_stop_y": self.rail_stop_y,
+            "rail": self.rail.to_dict(),
             
             "is_connected": self.is_connected(),
         }
diff --git a/games/objects/Point.py b/games/objects/Point.py
new file mode 100644
index 0000000..3d01a04
--- /dev/null
+++ b/games/objects/Point.py
@@ -0,0 +1,16 @@
+
+
+class Point:
+    
+    def __init__(self, x: float, y: float) -> None:
+        self.x = x
+        self.y = y
+        
+    def to_dict(self):
+        
+        data: dict[str: float] = {
+            "x": self.x,
+            "y": self.y,
+        }
+        
+        return data
\ No newline at end of file
diff --git a/games/objects/Segment.py b/games/objects/Segment.py
new file mode 100644
index 0000000..8de44c5
--- /dev/null
+++ b/games/objects/Segment.py
@@ -0,0 +1,17 @@
+
+from .Point import Point
+
+class Segment:
+    
+    def __init__(self, start: Point, stop: Point) -> None:
+        self.start: Point = start
+        self.stop: Point = stop
+        
+    def to_dict(self):
+        
+        data: dict[str: dict] = {
+            "start": self.start.to_dict(),
+            "stop": self.stop.to_dict(),
+        }
+        
+        return data
\ No newline at end of file
diff --git a/games/objects/Wall.py b/games/objects/Wall.py
index 4a96907..c18e13f 100644
--- a/games/objects/Wall.py
+++ b/games/objects/Wall.py
@@ -1,20 +1,15 @@
 
 
+from .Segment import Segment
 class Wall:
     
-    def __init__(self, rail_start_x, rail_start_y, rail_stop_x, rail_stop_y) -> None:
-        self.rail_start_x = rail_start_x
-        self.rail_start_y = rail_start_y
-        self.rail_stop_x = rail_stop_x
-        self.rail_stop_y = rail_stop_y
+    def __init__(self, rail: Segment) -> None:
+        self.rail: Segment = rail
         
-    def to_dict(self):
+    def to_dict(self) -> dict[str: dict]:
         
         data = {
-            "rail_start_x": self.rail_start_x,
-            "rail_start_y": self.rail_start_y,
-            "rail_stop_x": self.rail_stop_x,
-            "rail_stop_y": self.rail_stop_y,
+            "rail": self.rail.to_dict(),
         }
         
         return data
\ No newline at end of file
diff --git a/games/routine.py b/games/routine.py
index c77e707..6d52fe0 100644
--- a/games/routine.py
+++ b/games/routine.py
@@ -5,16 +5,68 @@ from typing import TYPE_CHECKING
 if TYPE_CHECKING:
     from .objects.Spectator import Spectator
     from .objects.Player import Player
-    from .objects.Game import Game 
+    from .objects.Game import Game
+    from .objects.Ball import Ball
+
+from .objects.Point import Point
+from .objects.Segment import Segment
 
 from . import config
 
+import math
 from time import sleep
 
+#see the video to understand the algorithme
+#https://www.youtube.com/watch?v=KOYoMYWUTEo
+def determine_director_coefficient(segment: Segment):
+    return ((segment.start.y - segment.stop.y) / (segment.start.x - segment.stop.x))
+
+def determine_ordinate_at_origin(point: Point, director_cofficient: float):
+    return point.y - point.x * director_cofficient
+
+def determine_intersection(director_coefficient1: float, ordinate_at_origin1: float, director_coefficient2: float, ordinate_at_origin2: float):
+    if (director_coefficient1 == director_coefficient2):
+        return None
+    return (ordinate_at_origin1 + ordinate_at_origin2) / (director_coefficient1 + director_coefficient2)
+
+def determine_intersections(ball: Ball, segments: list[Segment]):
+    
+    intersections: list[Point] = []
+    
+    for segment in segments:
+        
+        # form m * x + p
+        m: float = determine_director_coefficient(segment)
+        p: float = determine_ordinate_at_origin(segment.start, m)
+        
+        x: float = determine_intersection(m, p, ball.velocity_y, 0)
+        
+        if (x is None):
+            continue      
+        
+        y: float = m * x + p
+        
+        intersections.append(Point(x, y))
+
+    return intersections
+
+def determine_distance_between_ball_and_wall(ball: Ball, segments: list[Segment]):
+    
+    intersections: list[Point] = determine_intersections(ball, segments)
+    
+    distances = list(map(math.dist, intersections))
+    
+    return min(distances)
+    
+def render(ball: Ball, game: Game):
+    
+    segments: list[Segment] = [player.rail for player in game.players]
+    
+    print(determine_distance_between_ball_and_wall(ball))
+
 def routine(game: Game):
     
     while True:
-        
         for player in game._updated_players:
             game.broadcast("update_paddle", player.to_dict(), [player])