/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1"); /**** * Classes ****/ var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 12; // Increased from 8 to 12 for faster enemy movement self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; }; return self; }); var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; }; return self; }); var EnemyShip = Container.expand(function () { var self = Container.call(this); var shipGraphics = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.targetLane = 1; self.currentLane = 1; self.health = 5; self.shootTimer = 0; self.shootCooldown = 90; // 1.5 seconds at 60fps for faster shooting self.dodgeTimer = 0; self.lastPlayerLane = 1; self.predictiveTimer = 0; self.setLane = function (lane) { self.targetLane = Math.max(0, Math.min(2, lane)); }; self.takeDamage = function () { self.health--; LK.effects.flashObject(self, 0xff0000, 300); if (self.health <= 0) { self.destroy(); return true; } return false; }; self.update = function () { // Move to target lane with improved speed var targetX = lanePositions[self.targetLane]; var diff = targetX - self.x; if (Math.abs(diff) > 5) { self.x += diff * 0.18; // Faster lane switching } else { self.x = targetX; self.currentLane = self.targetLane; } // Enhanced AI dodging behavior with prediction if (vikingShip && vikingShip.currentLane !== self.lastPlayerLane) { self.dodgeTimer = 40; // Faster dodge response self.lastPlayerLane = vikingShip.currentLane; } if (self.dodgeTimer > 0) { self.dodgeTimer--; // Predictive dodging - try to avoid player's likely path var playerLane = vikingShip.currentLane; if (playerLane === self.currentLane) { // Move to a different lane immediately if (self.currentLane === 1) { self.setLane(Math.random() < 0.5 ? 0 : 2); } else if (self.currentLane === 0) { self.setLane(Math.random() < 0.7 ? 2 : 1); } else { self.setLane(Math.random() < 0.7 ? 0 : 1); } } else { // Dodge away from player with improved logic if (playerLane < self.currentLane && self.currentLane < 2) { self.setLane(self.currentLane + 1); } else if (playerLane > self.currentLane && self.currentLane > 0) { self.setLane(self.currentLane - 1); } } } // Occasional random movement to be unpredictable self.predictiveTimer++; if (self.predictiveTimer >= 180) { // Every 3 seconds self.predictiveTimer = 0; if (Math.random() < 0.3) { var randomLane = Math.floor(Math.random() * 3); self.setLane(randomLane); } } // Shooting behavior - enabled in level 2 self.shootTimer++; if (self.shootTimer >= self.shootCooldown) { self.shoot(); self.shootTimer = 0; } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + 100; bullet.lastY = bullet.y; enemyBullets.push(bullet); game.addChild(bullet); LK.getSound('shoot').play(); }; return self; }); var Lightning = Container.expand(function () { var self = Container.call(this); var lightningGraphics = self.attachAsset('lightning', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 12; self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; }; return self; }); var PlayerBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('playerBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -15; self.lastY = 0; self.update = function () { self.y += self.speed; }; return self; }); var Rune = Container.expand(function () { var self = Container.call(this); var runeGraphics = self.attachAsset('rune', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; self.rotation += 0.1; }; return self; }); var SeaSerpent = Container.expand(function () { var self = Container.call(this); var serpentGraphics = self.attachAsset('seaSerpent', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 4; self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; self.x += Math.sin(self.y * 0.01) * 2; }; return self; }); var Shield = Container.expand(function () { var self = Container.call(this); var shieldGraphics = self.attachAsset('shield', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.lastY = 0; self.update = function () { self.y += self.speed * gameSpeed; self.rotation += 0.05; }; return self; }); var VikingShip = Container.expand(function () { var self = Container.call(this); var shipGraphics = self.attachAsset('vikingShip', { anchorX: 0.5, anchorY: 0.5 }); self.targetLane = 1; self.currentLane = 1; self.health = 3; self.shields = 0; self.invulnerable = false; self.invulnerableTimer = 0; self.setLane = function (lane) { self.targetLane = Math.max(0, Math.min(2, lane)); }; self.takeDamage = function () { if (self.invulnerable) return; if (self.shields > 0) { self.shields--; updateShieldDisplay(); } else { self.health--; updateHealthDisplay(); LK.getSound('hit').play(); if (self.health <= 0) { LK.showGameOver(); return; } } self.invulnerable = true; self.invulnerableTimer = 120; LK.effects.flashObject(self, 0xff0000, 500); }; self.update = function () { var targetX = lanePositions[self.targetLane]; var diff = targetX - self.x; if (Math.abs(diff) > 5) { self.x += diff * 0.25; } else { self.x = targetX; self.currentLane = self.targetLane; } if (self.invulnerable) { self.invulnerableTimer--; if (self.invulnerableTimer <= 0) { self.invulnerable = false; } } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x1e3a8a }); /**** * Game Code ****/ var lanePositions = [2048 * 0.25, 2048 * 0.5, 2048 * 0.75]; var vikingShip = null; var enemies = []; var runes = []; var shields = []; var lightnings = []; var seaSerpents = []; var enemyShip = null; var enemyBullets = []; var playerBullets = []; var level = 1; var score = 0; var distance = 0; var enemySpawnTimer = 0; var runeSpawnTimer = 0; var shieldSpawnTimer = 0; var lightningSpawnTimer = 0; var serpentSpawnTimer = 0; var gameSpeed = 1; var levelTimer = 0; var levelDuration = 7200; // 2 minutes at 60fps var scoreTxt = new Text2('Score: 0', { size: 60, fill: 0xFFFFFF }); scoreTxt.anchor.set(0, 0); scoreTxt.x = 150; scoreTxt.y = 50; LK.gui.topLeft.addChild(scoreTxt); var levelTxt = new Text2('Level: 1', { size: 60, fill: 0xFFFFFF }); levelTxt.anchor.set(0.5, 0); LK.gui.top.addChild(levelTxt); var healthTxt = new Text2('Health: 3', { size: 60, fill: 0xFF0000 }); healthTxt.anchor.set(1, 0); healthTxt.x = -50; healthTxt.y = 50; LK.gui.topRight.addChild(healthTxt); var shieldTxt = new Text2('Shields: 0', { size: 60, fill: 0x4169E1 }); shieldTxt.anchor.set(1, 0); shieldTxt.x = -50; shieldTxt.y = 120; LK.gui.topRight.addChild(shieldTxt); // Variables for swipe detection var touchStartX = 0; var touchStartY = 0; var swipeMinDistance = 50; function updateScore() { scoreTxt.setText('Score: ' + score); } function updateLevel() { levelTxt.setText('Level: ' + level); } function updateHealthDisplay() { healthTxt.setText('Health: ' + vikingShip.health); } function updateShieldDisplay() { shieldTxt.setText('Shields: ' + vikingShip.shields); } function spawnEnemy() { var enemy = new Enemy(); var lane = Math.floor(Math.random() * 3); enemy.x = lanePositions[lane]; enemy.y = -100; enemy.lastY = enemy.y; enemies.push(enemy); game.addChild(enemy); } function spawnRune() { var rune = new Rune(); var lane = Math.floor(Math.random() * 3); rune.x = lanePositions[lane]; rune.y = -100; rune.lastY = rune.y; runes.push(rune); game.addChild(rune); } function spawnShield() { var shield = new Shield(); var lane = Math.floor(Math.random() * 3); shield.x = lanePositions[lane]; shield.y = -100; shield.lastY = shield.y; shields.push(shield); game.addChild(shield); } function spawnLightning() { var lightning = new Lightning(); var lane = Math.floor(Math.random() * 3); lightning.x = lanePositions[lane]; lightning.y = -100; lightning.lastY = lightning.y; lightnings.push(lightning); game.addChild(lightning); } function spawnSeaSerpent() { var serpent = new SeaSerpent(); var lane = Math.floor(Math.random() * 3); serpent.x = lanePositions[lane]; serpent.y = -200; serpent.lastY = serpent.y; seaSerpents.push(serpent); game.addChild(serpent); } function checkCollisions() { for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.intersects(vikingShip)) { vikingShip.takeDamage(); enemy.destroy(); enemies.splice(i, 1); } } for (var i = runes.length - 1; i >= 0; i--) { var rune = runes[i]; if (rune.intersects(vikingShip)) { score += 100; updateScore(); LK.getSound('collect').play(); rune.destroy(); runes.splice(i, 1); } } for (var i = shields.length - 1; i >= 0; i--) { var shield = shields[i]; if (shield.intersects(vikingShip)) { vikingShip.shields++; updateShieldDisplay(); LK.getSound('collect').play(); shield.destroy(); shields.splice(i, 1); } } for (var i = lightnings.length - 1; i >= 0; i--) { var lightning = lightnings[i]; if (lightning.intersects(vikingShip)) { vikingShip.takeDamage(); lightning.destroy(); lightnings.splice(i, 1); } } for (var i = seaSerpents.length - 1; i >= 0; i--) { var serpent = seaSerpents[i]; if (serpent.intersects(vikingShip)) { vikingShip.takeDamage(); serpent.destroy(); seaSerpents.splice(i, 1); } } // Check enemy bullet collisions for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.intersects(vikingShip)) { vikingShip.takeDamage(); bullet.destroy(); enemyBullets.splice(i, 1); } } // Check player bullet collisions with enemy ship if (enemyShip) { for (var i = playerBullets.length - 1; i >= 0; i--) { var bullet = playerBullets[i]; if (bullet.intersects(enemyShip)) { if (enemyShip.takeDamage()) { enemyShip = null; score += 1000; updateScore(); // Victory condition - enemy ship defeated LK.showYouWin(); } bullet.destroy(); playerBullets.splice(i, 1); } } } } function cleanupObjects() { for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.lastY < 2800 && enemy.y >= 2800) { enemy.destroy(); enemies.splice(i, 1); } enemy.lastY = enemy.y; } for (var i = runes.length - 1; i >= 0; i--) { var rune = runes[i]; if (rune.lastY < 2800 && rune.y >= 2800) { rune.destroy(); runes.splice(i, 1); } rune.lastY = rune.y; } for (var i = shields.length - 1; i >= 0; i--) { var shield = shields[i]; if (shield.lastY < 2800 && shield.y >= 2800) { shield.destroy(); shields.splice(i, 1); } shield.lastY = shield.y; } for (var i = lightnings.length - 1; i >= 0; i--) { var lightning = lightnings[i]; if (lightning.lastY < 2800 && lightning.y >= 2800) { lightning.destroy(); lightnings.splice(i, 1); } lightning.lastY = lightning.y; } for (var i = seaSerpents.length - 1; i >= 0; i--) { var serpent = seaSerpents[i]; if (serpent.lastY < 2800 && serpent.y >= 2800) { serpent.destroy(); seaSerpents.splice(i, 1); } serpent.lastY = serpent.y; } // Cleanup enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.lastY < 2800 && bullet.y >= 2800) { bullet.destroy(); enemyBullets.splice(i, 1); } bullet.lastY = bullet.y; } // Cleanup player bullets for (var i = playerBullets.length - 1; i >= 0; i--) { var bullet = playerBullets[i]; if (bullet.lastY > -100 && bullet.y <= -100) { bullet.destroy(); playerBullets.splice(i, 1); } bullet.lastY = bullet.y; } } vikingShip = new VikingShip(); vikingShip.x = lanePositions[1]; vikingShip.y = 2200; game.addChild(vikingShip); game.down = function (x, y, obj) { touchStartX = x; touchStartY = y; }; game.up = function (x, y, obj) { var deltaX = x - touchStartX; var deltaY = y - touchStartY; var swipeDistance = Math.sqrt(deltaX * deltaX + deltaY * deltaY); // Check if it's a swipe (minimum distance moved) if (swipeDistance >= swipeMinDistance) { // Horizontal swipe for lane changes if (Math.abs(deltaX) > Math.abs(deltaY)) { if (deltaX > 0) { // Swipe right - move to next lane vikingShip.setLane(vikingShip.currentLane + 1); } else { // Swipe left - move to previous lane vikingShip.setLane(vikingShip.currentLane - 1); } } } else { // It's a tap - shoot in level 2 if (level === 2) { var bullet = new PlayerBullet(); bullet.x = vikingShip.x; bullet.y = vikingShip.y - 100; bullet.lastY = bullet.y; playerBullets.push(bullet); game.addChild(bullet); LK.getSound('shoot').play(); } } }; game.update = function () { distance++; score += 1; levelTimer++; // Progressive speed increase in level 1 if (level === 1) { var timeProgress = levelTimer / levelDuration; gameSpeed = 1 + timeProgress * 2.0; // Speed increases from 1 to 3.0 over 2 minutes for higher difficulty } // Check for level progression based on time if (levelTimer >= levelDuration) { level++; levelTimer = 0; gameSpeed += 0.2; updateLevel(); // Spawn enemy ship in level 2 if (level === 2 && !enemyShip) { enemyShip = new EnemyShip(); enemyShip.x = lanePositions[1]; enemyShip.y = 300; game.addChild(enemyShip); } } // Ensure enemy ship exists in level 2 (in case it was destroyed or not spawned) if (level === 2 && !enemyShip) { enemyShip = new EnemyShip(); enemyShip.x = lanePositions[1]; enemyShip.y = 300; game.addChild(enemyShip); } // Dynamic obstacle spawn timing based on level and time progression - only in level 1 if (level === 1) { var baseEnemySpawnRate = 60; // Reduced from 90 to 60 for more frequent spawns var timeProgress = levelTimer / levelDuration; var difficultyMultiplier = 1 + timeProgress * 2.0; // Increased from 1.5 to 2.0 for faster difficulty ramp var enemySpawnRate = Math.max(baseEnemySpawnRate / difficultyMultiplier, 8); // Reduced minimum from 15 to 8 enemySpawnTimer++; if (enemySpawnTimer >= enemySpawnRate) { spawnEnemy(); enemySpawnTimer = 0; } } // Adaptive rune spawn rate - made more scarce in level 1 var runeSpawnRate = level === 2 ? 80 : Math.max(300 - level * 20, 180); // Increased from 200/120 to 300/180 runeSpawnTimer++; if (runeSpawnTimer >= runeSpawnRate) { spawnRune(); runeSpawnTimer = 0; } shieldSpawnTimer++; var shieldSpawnRate = level === 2 ? 300 : 600; if (shieldSpawnTimer >= shieldSpawnRate) { spawnShield(); shieldSpawnTimer = 0; } // Add sea serpent spawning in level 1 for extra difficulty if (level === 1) { var serpentSpawnRate = 400; // Spawn sea serpents occasionally in level 1 serpentSpawnTimer++; if (serpentSpawnTimer >= serpentSpawnRate) { spawnSeaSerpent(); serpentSpawnTimer = 0; } } if (level === 2) { var lightningSpawnRate = 80; lightningSpawnTimer++; if (lightningSpawnTimer >= lightningSpawnRate) { spawnLightning(); lightningSpawnTimer = 0; } } checkCollisions(); cleanupObjects(); if (LK.ticks % 10 === 0) { updateScore(); } }; LK.playMusic('vikingTheme');