/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Ball = Container.expand(function () { var self = Container.call(this); var ballGraphics = self.attachAsset('ball', { anchorX: 0.5, anchorY: 0.5 }); self.velocityX = 0; self.velocityY = 0; self.baseSpeed = 6; self.speedMultiplier = 3; self.reset = function () { self.x = 2048 / 2; self.y = 2732 / 2; self.speedMultiplier = 3; // Only set velocity if game has started if (gameStarted) { // Exactly 30 degrees in any random direction var angle = Math.PI / 6; // 30 degrees var direction = Math.floor(Math.random() * 8); // 8 possible directions var finalAngle = angle + direction * Math.PI / 4; // 30°, 75°, 120°, 165°, 210°, 255°, 300°, 345° self.velocityX = Math.cos(finalAngle) * self.baseSpeed; self.velocityY = Math.sin(finalAngle) * self.baseSpeed; } else { self.velocityX = 0; self.velocityY = 0; } }; self.update = function () { if (!gameStarted) return; self.x += self.velocityX * self.speedMultiplier; self.y += self.velocityY * self.speedMultiplier; // Check paddle collisions if (self.intersects(playerPaddle)) { if (self.velocityY > 0) { // Ball moving down self.velocityY = -Math.abs(self.velocityY); var paddleCenter = playerPaddle.x; var hitPos = (self.x - paddleCenter) / 100; // Normalize hit position self.velocityX = hitPos * self.baseSpeed; self.speedMultiplier = Math.min(self.speedMultiplier + 0.1, 6.0); LK.getSound('paddleHit').play(); } } if (self.intersects(aiPaddle)) { if (self.velocityY < 0) { // Ball moving up self.velocityY = Math.abs(self.velocityY); var paddleCenter = aiPaddle.x; var hitPos = (self.x - paddleCenter) / 100; // Normalize hit position self.velocityX = hitPos * self.baseSpeed; self.speedMultiplier = Math.min(self.speedMultiplier + 0.1, 6.0); LK.getSound('paddleHit').play(); } } // Bounce off left and right walls if (self.x <= 15 || self.x >= 2048 - 15) { self.velocityX = -self.velocityX; LK.getSound('wallHit').play(); } // Check for goals - top and bottom walls if (self.y <= 0) { // Ball hit top wall - player scores playerScore++; updateScoreDisplay(); LK.getSound('goal').play(); LK.effects.flashScreen(0x00ff00, 500); self.reset(); if (playerScore >= targetScore) { LK.showYouWin(); } } else if (self.y >= 2732) { // Ball hit bottom wall - AI scores aiScore++; updateScoreDisplay(); LK.getSound('goal').play(); LK.effects.flashScreen(0xff0000, 500); self.reset(); if (aiScore >= targetScore) { LK.showGameOver(); } } }; return self; }); var Paddle = Container.expand(function () { var self = Container.call(this); var paddleGraphics = self.attachAsset('paddle', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 8; self.targetY = 0; self.isPlayer = false; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ var playerScore = 0; var aiScore = 0; var targetScore = 10; var dragNode = null; var gameStarted = false; var countdownActive = true; var countdownNumber = 3; // Create center line var centerLine = game.addChild(LK.getAsset('centerLine', { anchorX: 0.5, anchorY: 0.5, x: 2048 / 2, y: 2732 / 2 })); // Create paddles var playerPaddle = game.addChild(new Paddle()); playerPaddle.x = 2048 / 2; playerPaddle.y = 2732 - 100; playerPaddle.isPlayer = true; var aiPaddle = game.addChild(new Paddle()); aiPaddle.x = 2048 / 2; aiPaddle.y = 100; aiPaddle.targetY = aiPaddle.y; // Create ball var ball = game.addChild(new Ball()); ball.reset(); // Create score display var scoreText = new Text2('0 - 0', { size: 80, fill: 0xFFFFFF }); scoreText.anchor.set(0.5, 0.5); LK.gui.center.addChild(scoreText); // Create countdown text var countdownText = new Text2('3', { size: 200, fill: 0xFFFFFF }); countdownText.anchor.set(0.5, 0.5); LK.gui.center.addChild(countdownText); function updateScoreDisplay() { scoreText.setText('Player ' + playerScore + ' - ' + aiScore + ' AI'); } function startCountdown() { if (countdownNumber > 0) { countdownText.setText(countdownNumber.toString()); countdownText.scaleX = 0.5; countdownText.scaleY = 0.5; countdownText.alpha = 1; // Animate countdown number tween(countdownText, { scaleX: 1.5, scaleY: 1.5, alpha: 0 }, { duration: 1000, easing: tween.easeOut, onFinish: function onFinish() { countdownNumber--; if (countdownNumber > 0) { startCountdown(); } else { countdownText.setText('GO!'); countdownText.scaleX = 0.5; countdownText.scaleY = 0.5; countdownText.alpha = 1; tween(countdownText, { scaleX: 2, scaleY: 2, alpha: 0 }, { duration: 500, easing: tween.easeOut, onFinish: function onFinish() { countdownActive = false; gameStarted = true; countdownText.visible = false; ball.reset(); } }); } } }); } } // AI behavior function updateAI() { var ballCenterX = ball.x; var ballCenterY = ball.y; var paddleCenterX = aiPaddle.x; var paddleCenterY = aiPaddle.y; var difference = ballCenterX - paddleCenterX; // Dynamic difficulty based on score difference var scoreDifference = aiScore - playerScore; var aiDifficulty = Math.max(0.3, Math.min(1.0, 0.7 + scoreDifference * 0.1)); var adjustedSpeed = aiPaddle.speed * aiDifficulty; var reactionThreshold = 30 / aiDifficulty; var predictionAccuracy = aiDifficulty; // Predict where ball will be when it reaches AI's Y position var predictedX = ballCenterX; if (ball.velocityY < 0 && Math.abs(ball.velocityY) > 0.1) { var timeToReachAI = (ballCenterY - paddleCenterY) / ball.velocityY; if (timeToReachAI > 0) { predictedX = ballCenterX + ball.velocityX * ball.speedMultiplier * timeToReachAI * predictionAccuracy; // Account for wall bounces in prediction if (predictedX < 15) { predictedX = 15 + (15 - predictedX); } else if (predictedX > 2048 - 15) { predictedX = 2048 - 15 - (predictedX - (2048 - 15)); } } } // Strategic positioning var targetX = paddleCenterX; if (ball.velocityY < 0) { // Ball coming toward AI - move to predicted position targetX = predictedX; } else if (ball.velocityY > 0) { // Ball going away - position strategically var distanceFromCenter = Math.abs(ballCenterX - 2048 / 2); if (distanceFromCenter < 300) { // Ball near center, stay in center targetX = 2048 / 2; } else { // Ball on sides, position slightly toward center from ball targetX = ballCenterX + (2048 / 2 - ballCenterX) * 0.3; } } else { // Ball not moving vertically much, stay centered targetX = 2048 / 2; } // Move toward target position with some randomness for realism var moveDirection = targetX - paddleCenterX; if (Math.abs(moveDirection) > reactionThreshold) { var moveAmount = Math.sign(moveDirection) * adjustedSpeed; // Add slight randomness to movement (less at higher difficulty) var randomFactor = (1 - aiDifficulty) * 0.3; moveAmount *= 1 + (Math.random() - 0.5) * randomFactor; aiPaddle.x += moveAmount; } // Keep AI paddle in bounds if (aiPaddle.x < 100) aiPaddle.x = 100; if (aiPaddle.x > 2048 - 100) aiPaddle.x = 2048 - 100; } // Touch controls game.down = function (x, y, obj) { // Check if touch is near player paddle var distance = Math.sqrt(Math.pow(x - playerPaddle.x, 2) + Math.pow(y - playerPaddle.y, 2)); if (distance < 150 || y > 2732 / 2) { dragNode = playerPaddle; } }; game.move = function (x, y, obj) { if (dragNode === playerPaddle) { playerPaddle.x = x; // Keep paddle in bounds if (playerPaddle.x < 100) playerPaddle.x = 100; if (playerPaddle.x > 2048 - 100) playerPaddle.x = 2048 - 100; } }; game.up = function (x, y, obj) { dragNode = null; }; // Main game loop game.update = function () { if (gameStarted) { updateAI(); } }; // Initialize score display updateScoreDisplay(); // Start countdown startCountdown();