/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Enemy (hazard) var Enemy = Container.expand(function () { var self = Container.call(this); var asset = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.width = asset.width; self.height = asset.height; self.moveDir = Math.random() < 0.5 ? 1 : -1; self.moveSpeed = 3 + Math.random() * 3; self.range = 400 + Math.random() * 200; self.baseX = 0; self.t = 0; self.init = function () { self.baseX = self.x; self.t = Math.random() * 1000; }; self.update = function () { self.t += self.moveSpeed; self.x = self.baseX + Math.sin(self.t / 180) * self.range; }; return self; }); // Jumper (player) var Jumper = Container.expand(function () { var self = Container.call(this); var asset = self.attachAsset('jumper', { anchorX: 0.5, anchorY: 0.5 }); self.width = asset.width; self.height = asset.height; self.vx = 0; self.vy = 0; self.jetpackTime = 0; self.jetpackActive = false; self.springBoost = false; self.springTimer = 0; self.update = function () { // Jetpack if (self.jetpackActive) { self.vy = -38; self.jetpackTime--; if (self.jetpackTime <= 0) { self.jetpackActive = false; } } // Spring if (self.springBoost) { self.vy = -48; self.springBoost = false; self.springTimer = 10; } if (self.springTimer > 0) { self.springTimer--; } // Gravity if (!self.jetpackActive) { self.vy += 2.2; if (self.vy > 60) self.vy = 60; } // Move self.x += self.vx; self.y += self.vy; // Wrap horizontally if (self.x < -self.width / 2) self.x = 2048 + self.width / 2; if (self.x > 2048 + self.width / 2) self.x = -self.width / 2; }; self.jump = function (power) { self.vy = -power; }; self.activateJetpack = function () { self.jetpackActive = true; self.jetpackTime = 90; }; self.activateSpring = function () { self.springBoost = true; }; return self; }); // Platform types: 'normal', 'break', 'move' var Platform = Container.expand(function () { var self = Container.call(this); self.type = 'normal'; self.broken = false; self.moveDir = 1; // 1:right, -1:left self.moveSpeed = 4 + Math.random() * 4; self.range = 300 + Math.random() * 300; self.baseX = 0; self.t = 0; self.asset = null; self.init = function (type) { self.type = type; if (type === 'normal') { self.asset = self.attachAsset('platform', { anchorX: 0.5, anchorY: 0.5 }); } else if (type === 'break') { self.asset = self.attachAsset('platform_break', { anchorX: 0.5, anchorY: 0.5 }); } else if (type === 'move') { self.asset = self.attachAsset('platform_move', { anchorX: 0.5, anchorY: 0.5 }); } self.width = self.asset.width; self.height = self.asset.height; self.baseX = self.x; self.t = Math.random() * 1000; }; self.update = function () { if (self.type === 'move') { self.t += self.moveSpeed; self.x = self.baseX + Math.sin(self.t / 180) * self.range; } }; self.breakPlatform = function () { if (self.type === 'break' && !self.broken) { self.broken = true; tween(self.asset, { alpha: 0 }, { duration: 300, onFinish: function onFinish() { self.visible = false; } }); } }; return self; }); // PowerUp: type = 'spring' or 'jetpack' var PowerUp = Container.expand(function () { var self = Container.call(this); self.type = 'spring'; self.active = true; self.asset = null; self.init = function (type) { self.type = type; if (type === 'spring') { self.asset = self.attachAsset('spring', { anchorX: 0.5, anchorY: 0.5 }); } else if (type === 'jetpack') { self.asset = self.attachAsset('jetpack', { anchorX: 0.5, anchorY: 0.5 }); } self.width = self.asset.width; self.height = self.asset.height; }; self.collect = function () { self.active = false; tween(self.asset, { alpha: 0 }, { duration: 200, onFinish: function onFinish() { self.visible = false; } }); }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x87ceeb // Sky blue }); /**** * Game Code ****/ // Game constants // Character: a springy jumper // Platform: normal // Platform: breakable // Platform: moving // Hazard: enemy // Power-up: spring // Power-up: jetpack var GAME_WIDTH = 2048; var GAME_HEIGHT = 2732; var PLATFORM_MIN_Y = 200; var PLATFORM_MAX_Y = 400; var PLATFORM_WIDTH = 300; var PLATFORM_HEIGHT = 40; var JUMPER_START_X = GAME_WIDTH / 2; var JUMPER_START_Y = GAME_HEIGHT - 400; var CAMERA_OFFSET = 900; // How far from bottom before camera scrolls // Game state var jumper; var platforms = []; var enemies = []; var powerups = []; var maxY = 0; // Highest Y reached (lowest value, since y decreases as you go up) var cameraY = 0; var dragNode = null; var lastDownX = 0; var lastDownY = 0; var scoreTxt; var gameOver = false; // Score display scoreTxt = new Text2('0', { size: 120, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); // Helper: create a platform at (x, y) of given type function createPlatform(x, y, type) { var plat = new Platform(); plat.x = x; plat.y = y; plat.init(type); platforms.push(plat); game.addChild(plat); return plat; } // Helper: create an enemy at (x, y) function createEnemy(x, y) { var enemy = new Enemy(); enemy.x = x; enemy.y = y; enemy.init(); enemies.push(enemy); game.addChild(enemy); return enemy; } // Helper: create a powerup at (x, y) of given type function createPowerUp(x, y, type) { var pu = new PowerUp(); pu.x = x; pu.y = y; pu.init(type); powerups.push(pu); game.addChild(pu); return pu; } // Reset game state function resetGame() { // Remove all platforms, enemies, powerups for (var i = 0; i < platforms.length; ++i) platforms[i].destroy(); for (var i = 0; i < enemies.length; ++i) enemies[i].destroy(); for (var i = 0; i < powerups.length; ++i) powerups[i].destroy(); platforms = []; enemies = []; powerups = []; // Create initial platform directly under jumper createPlatform(JUMPER_START_X, JUMPER_START_Y + 80, 'normal'); // Create initial platforms var y = JUMPER_START_Y + 200; while (y > -2000) { var x = 200 + Math.random() * (GAME_WIDTH - 400); var type = 'normal'; if (Math.random() < 0.12 && y < JUMPER_START_Y - 600) type = 'break';else if (Math.random() < 0.15 && y < JUMPER_START_Y - 800) type = 'move'; createPlatform(x, y, type); y -= PLATFORM_MIN_Y + Math.random() * (PLATFORM_MAX_Y - PLATFORM_MIN_Y); } // Add some enemies and powerups for (var i = 0; i < 6; ++i) { var px = 200 + Math.random() * (GAME_WIDTH - 400); var py = JUMPER_START_Y - 800 - Math.random() * 2000; createEnemy(px, py); } for (var i = 0; i < 4; ++i) { var px = 200 + Math.random() * (GAME_WIDTH - 400); var py = JUMPER_START_Y - 600 - Math.random() * 2000; var type = Math.random() < 0.5 ? 'spring' : 'jetpack'; createPowerUp(px, py, type); } // Create jumper jumper = new Jumper(); jumper.x = JUMPER_START_X; jumper.y = JUMPER_START_Y; jumper.vx = 0; jumper.vy = 0; game.addChild(jumper); // Reset camera cameraY = 0; maxY = jumper.y; // Reset score LK.setScore(0); scoreTxt.setText('0'); gameOver = false; } // Camera scroll function updateCamera() { // Camera follows jumper upward, but not downward var targetY = jumper.y - CAMERA_OFFSET; if (targetY < cameraY) { cameraY = targetY; } // Move all objects relative to camera for (var i = 0; i < platforms.length; ++i) platforms[i].yRel = platforms[i].y - cameraY; for (var i = 0; i < enemies.length; ++i) enemies[i].yRel = enemies[i].y - cameraY; for (var i = 0; i < powerups.length; ++i) powerups[i].yRel = powerups[i].y - cameraY; jumper.yRel = jumper.y - cameraY; // Actually set y for display for (var i = 0; i < platforms.length; ++i) platforms[i].position.y = platforms[i].yRel; for (var i = 0; i < enemies.length; ++i) enemies[i].position.y = enemies[i].yRel; for (var i = 0; i < powerups.length; ++i) powerups[i].position.y = powerups[i].yRel; jumper.position.y = jumper.yRel; } // Generate new platforms as needed function generatePlatforms() { // Find highest platform var minY = 999999; for (var i = 0; i < platforms.length; ++i) { if (platforms[i].y < minY) minY = platforms[i].y; } // If highest platform is above screen, add more while (minY > cameraY - 800) { var x = 200 + Math.random() * (GAME_WIDTH - 400); var y = minY - (PLATFORM_MIN_Y + Math.random() * (PLATFORM_MAX_Y - PLATFORM_MIN_Y)); var type = 'normal'; if (Math.random() < 0.13) type = 'break';else if (Math.random() < 0.17) type = 'move'; createPlatform(x, y, type); // Maybe add enemy or powerup if (Math.random() < 0.08) createEnemy(x, y - 100); if (Math.random() < 0.07) createPowerUp(x, y - 60, Math.random() < 0.5 ? 'spring' : 'jetpack'); minY = y; } } // Remove offscreen objects function cleanupObjects() { // Platforms for (var i = platforms.length - 1; i >= 0; --i) { if (platforms[i].yRel > GAME_HEIGHT + 200) { platforms[i].destroy(); platforms.splice(i, 1); } } // Enemies for (var i = enemies.length - 1; i >= 0; --i) { if (enemies[i].yRel > GAME_HEIGHT + 200) { enemies[i].destroy(); enemies.splice(i, 1); } } // Powerups for (var i = powerups.length - 1; i >= 0; --i) { if (powerups[i].yRel > GAME_HEIGHT + 200 || !powerups[i].active) { powerups[i].destroy(); powerups.splice(i, 1); } } } // Platform collision function checkPlatformCollision() { if (jumper.vy > 0) { // Only when falling for (var i = 0; i < platforms.length; ++i) { var plat = platforms[i]; if (!plat.visible || plat.broken) continue; // Simple AABB var px = plat.x, py = plat.yRel; var pw = plat.width, ph = plat.height; var jx = jumper.x, jy = jumper.yRel; var jw = jumper.width, jh = jumper.height; if (jy + jh / 2 > py - ph / 2 && jy + jh / 2 < py + ph / 2) { if (jx + jw / 2 > px - pw / 2 && jx - jw / 2 < px + pw / 2) { // Landed on platform if (plat.type === 'break') { plat.breakPlatform(); return; } jumper.jump(38); // Score: 1 per platform landed LK.setScore(LK.getScore() + 1); scoreTxt.setText(LK.getScore()); return; } } } } } // Powerup collision function checkPowerUpCollision() { for (var i = 0; i < powerups.length; ++i) { var pu = powerups[i]; if (!pu.active) continue; var px = pu.x, py = pu.yRel; var pw = pu.width, ph = pu.height; var jx = jumper.x, jy = jumper.yRel; var jw = jumper.width, jh = jumper.height; if (Math.abs(jx - px) < (jw + pw) / 2 && Math.abs(jy - py) < (jh + ph) / 2) { // Collect pu.collect(); if (pu.type === 'spring') { jumper.activateSpring(); } else if (pu.type === 'jetpack') { jumper.activateJetpack(); } } } } // Enemy collision function checkEnemyCollision() { for (var i = 0; i < enemies.length; ++i) { var en = enemies[i]; var ex = en.x, ey = en.yRel; var ew = en.width, eh = en.height; var jx = jumper.x, jy = jumper.yRel; var jw = jumper.width, jh = jumper.height; if (Math.abs(jx - ex) < (jw + ew) / 2 - 10 && Math.abs(jy - ey) < (jh + eh) / 2 - 10) { // Collided LK.effects.flashScreen(0xff0000, 800); gameOver = true; LK.showGameOver(); return; } } } // Game over if fall off screen function checkFall() { if (jumper.yRel > GAME_HEIGHT + 100) { LK.effects.flashScreen(0xff0000, 800); gameOver = true; LK.showGameOver(); } } // Touch controls: drag left/right game.down = function (x, y, obj) { if (gameOver) return; dragNode = jumper; lastDownX = x; lastDownY = y; }; game.move = function (x, y, obj) { if (gameOver) return; if (dragNode) { var dx = x - lastDownX; jumper.x += dx; lastDownX = x; lastDownY = y; } }; game.up = function (x, y, obj) { dragNode = null; }; // Main update loop game.update = function () { if (gameOver) return; jumper.update(); for (var i = 0; i < platforms.length; ++i) platforms[i].update(); for (var i = 0; i < enemies.length; ++i) enemies[i].update(); // Camera updateCamera(); // Generate new platforms generatePlatforms(); // Remove offscreen cleanupObjects(); // Collisions checkPlatformCollision(); checkPowerUpCollision(); checkEnemyCollision(); checkFall(); // Update maxY and score if (jumper.y < maxY) { maxY = jumper.y; var sc = Math.floor((JUMPER_START_Y - maxY) / 10); if (sc > LK.getScore()) { LK.setScore(sc); scoreTxt.setText(sc); } } }; // Start game resetGame();