/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Ball (player) class var Ball = Container.expand(function () { var self = Container.call(this); var ballGfx = self.attachAsset('ball', { anchorX: 0.5, anchorY: 0.5, scaleX: 1.7, scaleY: 1.7 }); self.radius = ballGfx.width / 2; self.vx = 0; self.vy = 0; self.launched = false; self.resting = true; // true if waiting for launch self.bounceCooldown = 0; // prevent double bounces self.update = function () { if (self.launched) { // Gravity self.vy += 0.1344; // Move self.x += self.vx; self.y += self.vy; // Friction (air) self.vx *= 0.995; // Clamp to game area if (self.x < self.radius) self.x = self.radius; if (self.x > 2048 - self.radius) self.x = 2048 - self.radius; // If falls below screen, game over if (self.y > 2732 + 200) { LK.effects.flashScreen(0xff0000, 800); LK.showGameOver(); } } }; // Reset ball to start self.reset = function () { self.x = 2048 / 2; self.y = typeof ballStartY !== "undefined" ? ballStartY : 2732 - 180; self.vx = 0; self.vy = 0; self.launched = false; self.resting = true; self.bounceCooldown = 0; }; // Bounce up (from bouncy car) self.bounce = function (strength) { self.vy = -Math.abs(strength || 38 + Math.random() * 8); self.launched = true; self.resting = false; self.bounceCooldown = 10; }; return self; }); // BouncyCar (bouncy vehicle) class var BouncyCar = Container.expand(function () { var self = Container.call(this); var bouncyGfx = self.attachAsset('bouncycar', { anchorX: 0.5, anchorY: 0.5 }); self.scale.set(1.2, 1.2); self.width = bouncyGfx.width * 1.2; self.height = bouncyGfx.height * 1.2; self.speed = 0; self.lane = 0; self.type = 'bouncycar'; self.bouncePhase = Math.random() * Math.PI * 2; self.update = function () { self.x += self.speed; // Bouncy up-down self.y0 = self.y0 || self.y; self.y = self.y0 + Math.sin(LK.ticks / 12 + self.bouncePhase) * 38; if (self.speed > 0 && self.x > 2048 + 200) self.destroyed = true; if (self.speed < 0 && self.x < -200) self.destroyed = true; }; return self; }); // Car (normal) class var Car = Container.expand(function () { var self = Container.call(this); var carGfx = self.attachAsset('car', { anchorX: 0.5, anchorY: 0.5 }); self.scale.set(1.2, 1.2); self.width = carGfx.width * 1.2; self.height = carGfx.height * 1.2; self.speed = 0; self.lane = 0; self.type = 'car'; self.update = function () { self.x += self.speed; // Remove if out of screen if (self.speed > 0 && self.x > 2048 + 200) self.destroyed = true; if (self.speed < 0 && self.x < -200) self.destroyed = true; }; return self; }); // Truck (long vehicle) class var Truck = Container.expand(function () { var self = Container.call(this); var truckGfx = self.attachAsset('truck', { anchorX: 0.5, anchorY: 0.5 }); self.scale.set(1.2, 1.2); self.width = truckGfx.width * 1.2; self.height = truckGfx.height * 1.2; self.speed = 0; self.lane = 0; self.type = 'truck'; self.update = function () { self.x += self.speed; if (self.speed > 0 && self.x > 2048 + 300) self.destroyed = true; if (self.speed < 0 && self.x < -300) self.destroyed = true; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // --- Game variables --- // Ball (player) // Stop (target) // Road background // Lane divider // Car // Truck // Bouncy car // Slingshot band var lanes = [0, 1, 2, 3, 4, 5]; var laneYs = []; var laneCount = 6; var verticalOffset = -200; // Move everything up by 200px var roadTop = 600 + verticalOffset; var roadHeight = 1536; var laneGap = roadHeight / laneCount; for (var i = 0; i < laneCount; ++i) { laneYs[i] = roadTop + laneGap / 2 + i * laneGap; } // Place stop (target) at the top of the road, centered horizontally var stopY = roadTop - 100; var stopX = 2048 / 2; // Update stop trigger area to match new stop (target) width var stopRadius = { x: 158, // half of stop image width (316/2), matches texture y: 90 }; // x: horizontal radius, y: vertical radius var level = 1; var vehicles = []; var ball = null; var stop = null; var slingshotBand = null; var isDragging = false; // Place the ball higher up (not at the very bottom) var ballStartY = roadTop + roadHeight + 120; var dragStart = { x: 0, y: 0 }; var dragCurrent = { x: 0, y: 0 }; var launchPower = 0; var launchAngle = 0; var canLaunch = true; var scoreTxt = null; var levelTxt = null; var winTimeout = null; // --- Draw road and lanes --- var road = LK.getAsset('road', { x: 0, y: roadTop, width: 2048, height: roadHeight }); game.addChild(road); // Lane dividers for (var i = 1; i < laneCount; ++i) { var divider = LK.getAsset('divider', { x: 0, y: roadTop + i * laneGap - 12, width: 2048, height: 24 }); game.addChild(divider); } // --- Stop (target) --- stop = LK.getAsset('stop', { anchorX: 0.5, anchorY: 0.5, x: stopX, y: stopY, scaleX: 1.2, scaleY: 1.2 }); game.addChild(stop); // --- Ball (player) --- ball = new Ball(); ball.scale.set(1.2, 1.2); game.addChild(ball); ball.reset(); // --- Slingshot band (visual) --- slingshotBand = LK.getAsset('band', { anchorX: 0.5, anchorY: 1, x: ball.x, y: ball.y }); slingshotBand.visible = false; game.addChild(slingshotBand); // --- GUI: Score and Level --- scoreTxt = new Text2('0', { size: 110, fill: "#fff" }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); levelTxt = new Text2('1', { size: 70, fill: "#fff" }); levelTxt.anchor.set(0.5, 0); LK.gui.topRight.addChild(levelTxt); // --- Game state --- function resetGameState() { // Remove vehicles for (var i = 0; i < vehicles.length; ++i) { vehicles[i].destroy(); } vehicles = []; // Reset ball ball.reset(); // Reset slingshot slingshotBand.visible = false; isDragging = false; canLaunch = true; // Reset score/level LK.setScore(0); scoreTxt.setText('0'); level = 1; levelTxt.setText('1'); } resetGameState(); // --- Vehicle spawner --- function spawnVehicle() { // Randomly pick lane var lane = Math.floor(Math.random() * laneCount); var y = laneYs[lane]; // Adjusted spawn probabilities: All vehicle types reduced by 5% // Old: Car 60%, Truck 25%, BouncyCar 15% // New: Car 55%, Truck 20%, BouncyCar 10% var t = Math.random(); var v, dir, speed; if (t < 0.55) { v = new Car(); speed = (12 + level * 1.2 + Math.random() * 2) * 0.5; } else if (t < 0.75) { v = new Truck(); speed = (8 + level * 1.1 + Math.random() * 2) * 0.5 * 0.9; // Truck speed reduced by 10% } else { v = new BouncyCar(); speed = (10 + level * 1.3 + Math.random() * 2) * 0.5 * 1.1; // BouncyCar speed increased by 10% } // Direction: even lanes left->right, odd right->left dir = lane % 2 === 0 ? 1 : -1; v.lane = lane; v.y = y; v.y0 = y; v.speed = speed * dir; if (dir > 0) { v.x = -200; } else { v.x = 2048 + 200; // Flip the vehicle horizontally if moving right-to-left if (v.children && v.children.length > 0 && v.children[0]) { v.children[0].scale.x = -1; } } vehicles.push(v); game.addChild(v); } // --- Level progression --- function nextLevel() { level += 1; levelTxt.setText(level + ''); // Remove all vehicles for (var i = 0; i < vehicles.length; ++i) vehicles[i].destroy(); vehicles = []; // Reset ball ball.reset(); canLaunch = true; slingshotBand.visible = false; } // --- Game update --- game.update = function () { // Ball update ball.update(); // Vehicles update // --- Make vehicles follow the speed of the vehicle in front if they are too close in the same lane --- for (var i = vehicles.length - 1; i >= 0; --i) { var v = vehicles[i]; // Find the closest vehicle ahead in the same lane and direction var minDist = Infinity; var frontVehicle = null; for (var j = 0; j < vehicles.length; ++j) { if (i === j) continue; var v2 = vehicles[j]; if (v2.lane !== v.lane) continue; // Only consider vehicles in the same direction if (v.speed > 0 && v2.x > v.x || v.speed < 0 && v2.x < v.x) { var dist = Math.abs(v2.x - v.x); if (dist < minDist) { minDist = dist; frontVehicle = v2; } } } // If too close, match speed to the front vehicle if (frontVehicle) { // Use the larger of the two widths for minimum gap var minGap = Math.max(v.width, frontVehicle.width) * 0.85; if (minDist < minGap) { v.speed = frontVehicle.speed; // Snap position to avoid overlap if (v.speed > 0) { v.x = Math.min(v.x, frontVehicle.x - minGap + 1); } else { v.x = Math.max(v.x, frontVehicle.x + minGap - 1); } } } v.update(); // Remove destroyed if (v.destroyed) { v.destroy(); vehicles.splice(i, 1); continue; } } // Ball-vehicle collision if (ball.launched && ball.bounceCooldown <= 0) { for (var i = 0; i < vehicles.length; ++i) { var v = vehicles[i]; // AABB collision var dx = Math.abs(ball.x - v.x); var dy = Math.abs(ball.y - v.y); var overlapX = dx < ball.radius + v.width / 2 - 10; var overlapY = dy < ball.radius + v.height / 2 - 10; if (overlapX && overlapY) { if (v.type === 'bouncycar') { // Calculate the incoming angle and speed var incomingAngle = Math.atan2(ball.vy, ball.vx); var speed = Math.sqrt(ball.vx * ball.vx + ball.vy * ball.vy); // Reverse the angle (go in the exact opposite direction) var baseBounceAngle = incomingAngle + Math.PI; // Add up to ±10% randomness to the angle var randomAngle = (Math.random() - 0.5) * (Math.PI * 0.2); // ±0.1π ≈ ±18° var bounceAngle = baseBounceAngle + randomAngle; // Bounce speed is 120% of the incoming speed var bounceSpeed = speed * 1.2; // Set new velocity ball.vx = Math.cos(bounceAngle) * bounceSpeed; ball.vy = Math.sin(bounceAngle) * bounceSpeed; ball.launched = true; ball.resting = false; ball.bounceCooldown = 12; LK.effects.flashObject(v, 0xffff00, 400); // Do NOT randomize X anymore, keep physics consistent // After bounce, check if ball is immediately on stop (target) var dxStop = ball.x - stop.x; var dyStop = ball.y - stop.y; // Use ellipse collision: (dx/a)^2 + (dy/b)^2 < 1 if (dxStop * dxStop / ((stopRadius.x + ball.radius - 10) * (stopRadius.x + ball.radius - 10)) + dyStop * dyStop / ((stopRadius.y + ball.radius - 10) * (stopRadius.y + ball.radius - 10)) < 1 && Math.abs(ball.vy) < 18) { // Win! LK.setScore(LK.getScore() + 1); scoreTxt.setText(LK.getScore() + ''); LK.effects.flashObject(stop, 0x00ff00, 600); canLaunch = false; ball.launched = false; ball.resting = true; // Randomize stop X position (avoid edges) var stopMargin = 180 + stopRadius.x; stop.x = stopMargin + Math.random() * (2048 - 2 * stopMargin); // Next level after short delay if (winTimeout) LK.clearTimeout(winTimeout); winTimeout = LK.setTimeout(function () { nextLevel(); }, 1200); return; } } else { // Crash: game over LK.effects.flashScreen(0xff0000, 800); LK.showGameOver(); return; } } } } if (ball.bounceCooldown > 0) ball.bounceCooldown--; // Ball-stop (target) collision if (ball.launched && !ball.resting) { var dx = ball.x - stop.x; var dy = ball.y - stop.y; // Use ellipse collision: (dx/a)^2 + (dy/b)^2 < 1 if (dx * dx / ((stopRadius.x + ball.radius - 10) * (stopRadius.x + ball.radius - 10)) + dy * dy / ((stopRadius.y + ball.radius - 10) * (stopRadius.y + ball.radius - 10)) < 1 && Math.abs(ball.vy) < 18) { // Win! LK.setScore(LK.getScore() + 1); scoreTxt.setText(LK.getScore() + ''); LK.effects.flashObject(stop, 0x00ff00, 600); canLaunch = false; ball.launched = false; ball.resting = true; // Randomize stop X position (avoid edges) var margin = 180 + stopRadius.x; stop.x = margin + Math.random() * (2048 - 2 * margin); // Next level after short delay if (winTimeout) LK.clearTimeout(winTimeout); winTimeout = LK.setTimeout(function () { nextLevel(); }, 1200); } } // Vehicle spawn logic if (LK.ticks % Math.max(38 - Math.min(level * 2, 30), 10) === 0) { spawnVehicle(); } }; // --- Slingshot controls --- function getDragVector() { var dx = dragCurrent.x - dragStart.x; var dy = dragCurrent.y - dragStart.y; return { dx: dx, dy: dy }; } function updateSlingshotBand() { if (!isDragging) { slingshotBand.visible = false; return; } var vec = getDragVector(); var len = Math.sqrt(vec.dx * vec.dx + vec.dy * vec.dy); var maxLen = 420; if (len > maxLen) { vec.dx *= maxLen / len; vec.dy *= maxLen / len; len = maxLen; } // Band position: from ball center to drag point slingshotBand.visible = true; slingshotBand.x = ball.x; slingshotBand.y = ball.y; slingshotBand.height = len; slingshotBand.rotation = Math.atan2(vec.dy, vec.dx) + Math.PI / 2; } // --- Input handlers --- game.down = function (x, y, obj) { // Only allow drag if ball is at rest and not in win state if (!canLaunch || !ball.resting) return; // Only allow drag if touch is near ball var dx = x - ball.x; var dy = y - ball.y; if (dx * dx + dy * dy < ball.radius * ball.radius * 2.2) { isDragging = true; dragStart.x = ball.x; dragStart.y = ball.y; dragCurrent.x = x; dragCurrent.y = y; updateSlingshotBand(); } }; game.move = function (x, y, obj) { if (!isDragging) return; dragCurrent.x = x; dragCurrent.y = y; updateSlingshotBand(); }; game.up = function (x, y, obj) { if (!isDragging) return; isDragging = false; slingshotBand.visible = false; // Launch! var vec = getDragVector(); var len = Math.sqrt(vec.dx * vec.dx + vec.dy * vec.dy); if (len < 60) return; // too short var maxLen = 420; if (len > maxLen) { vec.dx *= maxLen / len; vec.dy *= maxLen / len; len = maxLen; } // Set velocity (scaled) ball.vx = -vec.dx * 0.055; ball.vy = -vec.dy * 0.055; ball.launched = true; ball.resting = false; canLaunch = false; }; // --- Game over/win handling --- LK.on('gameover', function () { resetGameState(); }); LK.on('youwin', function () { resetGameState(); });