/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
// Ball class
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.half = self.width / 2;
	self.speedX = 3;
	self.speedY = 3;
	self.lastCollisionTime = 0; // Pour éviter les collisions multiples
	self.update = function (net, player1, player2) {
		if (!ballCanMove) {
			return;
		}
		// Apply gravity
		self.applyGravity();
		// Update ball position
		self.x += self.speedX;
		self.y += self.speedY;
		// Check for collisions with the net
		if (self.intersects(net)) {
			self.speedX *= -1; // Reverse horizontal direction
		}
		// Check for collisions with players
		if (player1.collisionBody && self.intersects(player1.collisionBody) || player2.collisionBody && self.intersects(player2.collisionBody)) {
			self.speedY = -10; // Make the ball go up
			self.speedX = (self.intersects(player1.collisionBody) ? player1.speedX : player2.speedX) * 0.5; // Adjust horizontal speed based on player movement
		}
		// Check for out of bounds
		if (self.y > 2732) {
			resetBall();
		}
	};
});
// Net class
var Net = Container.expand(function () {
	var self = Container.call(this);
	var netGraphics = self.attachAsset('net', {
		anchorX: 0.5,
		anchorY: 1,
		alpha: 0.1
	});
});
// Player class
var Player = Container.expand(function (index) {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1,
		alpha: 0.95,
		scaleX: index === 2 ? -1 : 1,
		tint: index === 1 ? 0xADD8E6 : 0xFF6347 // Light blue for player 1, Tomato red for player 2
	});
	self.index = index;
	self.speedX = 0; // Initialize horizontal speed
	var collidSize = 220;
	self.collisionBody = LK.getAsset('collisionBody', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: isDebug ? 0.6 : 0,
		width: collidSize,
		height: collidSize,
		y: -200
	});
	self.addChild(self.collisionBody);
	self.update = function () {
		var prevX = self.x; // Store previous x position
		if (self.jumping) {
			self.y -= 20; // Increase jump speed
			if (self.y <= 1300) {
				self.jumping = false;
			}
		} else if (self.y < 2000) {
			self.y += 20; // Increase fall speed for smoother jump
		}
		if (self.y < 0) {
			self.y = 0; // Prevent player1 from moving above the window
		}
		if (self.index === 2 && self.x > 1024 && self.x < 1024 + self.width / 2) {
			self.x = 1024 + self.width / 2; // Prevent player2 from moving past the net
		}
		self.speedX = self.x - prevX; // Calculate horizontal speed based on movement
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
var ballCanMove = false;
var background = LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(background);
var isDebug = true;
var player2Debug = true;
var PLAYER1_INITIAL_X = 512;
var PLAYER1_INITIAL_Y = 2000;
var PLAYER2_INITIAL_X = 1536;
var PLAYER2_INITIAL_Y = 2000;
var player1 = game.addChild(new Player(1));
var player2 = game.addChild(new Player(2));
player1.x = PLAYER1_INITIAL_X;
player1.y = PLAYER1_INITIAL_Y;
player2.x = PLAYER2_INITIAL_X;
player2.y = PLAYER2_INITIAL_Y;
var net = new Net();
game.addChild(net);
net.x = 2048 / 2;
net.y = 2000;
var ball = new Ball();
ball.x = player1.x;
ball.y = 1300; // Set the ball's initial vertical position to y = 300
game.addChild(ball);
var score1 = 0;
var score2 = 0;
var scoreTxt1 = new Text2('0', {
	size: 100,
	fill: "#ffffff"
});
scoreTxt1.anchor.set(0.5, 0);
LK.gui.topLeft.addChild(scoreTxt1);
var scoreTxt2 = new Text2('0', {
	size: 100,
	fill: "#ffffff"
});
scoreTxt2.anchor.set(0.5, 0);
LK.gui.topRight.addChild(scoreTxt2);
game.update = function () {
	if (!ballCanMove && (ball.intersects(player1.collisionBody) || ball.intersects(player2.collisionBody) || ball.intersects(player1) || ball.intersects(player2))) {
		ballCanMove = true;
	}
	if (ballCanMove) {
		ball.update(net, player1, player2);
	}
};
function resetBall() {
	ball.x = PLAYER1_INITIAL_X;
	ball.y = 1300; // Set the ball's initial vertical position to y = 1300
	ball.speedX = 3;
	ball.speedY = 3; // Reset speed
	ballCanMove = false; // Reset ball movement flag
	/* 
	player1.x = PLAYER1_INITIAL_X;
	player1.y = PLAYER1_INITIAL_Y;
	player2.x = PLAYER2_INITIAL_X;
	player2.y = PLAYER2_INITIAL_Y;
	*/
}
game.down = function (x, y, obj) {
	if (x <= 1024 - player1.width / 2 && x >= player1.width / 2) {
		player1.speedX = x - player1.x; // Update speedX based on movement
		player1.x = x;
	}
	if (player1.y >= PLAYER1_INITIAL_Y) {
		player1.jumping = true;
	}
	if (player2Debug && x >= 1024 + player2.width / 2 && x <= 2048 - player2.width / 2 && x >= player2.width / 2) {
		player2.speedX = x - player2.x; // Update speedX based on movement
		player2.x = x;
	}
	if (player2Debug && player2.y >= PLAYER2_INITIAL_Y) {
		player2.jumping = true;
	}
};
game.move = function (x, y, obj) {
	if (x + player1.width / 2 <= 1024 && x - player1.width / 2 >= 0) {
		player1.speedX = x - player1.x; // Update speedX based on movement
		player1.x = x;
	}
	if (player2Debug && x - player2.width / 2 >= 1024 && x + player2.width / 2 <= 2048) {
		player2.speedX = x - player2.x; // Update speedX based on movement
		player2.x = x;
	}
	if (player2Debug && x < 1024 + player2.width / 2) {
		player2.x = 1024 + player2.width / 2; // Prevent player2 from moving past the net
	}
	if (player1.y < 0) {
		player1.y = 0; // Prevent player1 from moving above the window
	}
};
game.up = function (x, y, obj) {
	// No action needed on up event
};
Ball.prototype.applyGravity = function () {
	this.speedY += 0.5; // Gravity effect
};
Ball.prototype.applyGravity = function () {
	this.speedY += 0.5; // Gravity effect
};

===================================================================
--- original.js
+++ change.js
@@ -26,9 +26,9 @@
 		if (self.intersects(net)) {
 			self.speedX *= -1; // Reverse horizontal direction
 		}
 		// Check for collisions with players
-		if (self.intersects(player1.collisionBody) || self.intersects(player2.collisionBody)) {
+		if (player1.collisionBody && self.intersects(player1.collisionBody) || player2.collisionBody && self.intersects(player2.collisionBody)) {
 			self.speedY = -10; // Make the ball go up
 			self.speedX = (self.intersects(player1.collisionBody) ? player1.speedX : player2.speedX) * 0.5; // Adjust horizontal speed based on player movement
 		}
 		// Check for out of bounds
@@ -121,11 +121,12 @@
 var net = new Net();
 game.addChild(net);
 net.x = 2048 / 2;
 net.y = 2000;
-var ball = game.addChild(new Ball());
+var ball = new Ball();
 ball.x = player1.x;
 ball.y = 1300; // Set the ball's initial vertical position to y = 300
+game.addChild(ball);
 var score1 = 0;
 var score2 = 0;
 var scoreTxt1 = new Text2('0', {
 	size: 100,