/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Boss = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('bossEnemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 1; self.health = 10; self.maxHealth = 10; self.shootTimer = 0; self.shootInterval = 60; // 1 second at 60fps self.isBoss = true; self.update = function () { // Move toward player var dx = hero.x - self.x; var dy = hero.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { var moveX = dx / distance * self.speed * enemySpeedMultiplier * timeScale; var moveY = dy / distance * self.speed * enemySpeedMultiplier * timeScale; var newX = self.x + moveX; var newY = self.y + moveY; // Check collision with obstacles var canMove = true; for (var i = 0; i < obstacles.length; i++) { var obstacle = obstacles[i]; if (newX + 75 > obstacle.x - 60 && newX - 75 < obstacle.x + 60 && newY + 75 > obstacle.y - 60 && newY - 75 < obstacle.y + 60) { canMove = false; break; } } if (canMove) { self.x = newX; self.y = newY; } } // Shoot at player more frequently self.shootTimer += timeScale; if (self.shootTimer >= self.shootInterval) { self.shoot(); self.shootTimer = 0; } }; self.shoot = function () { // Boss shoots 3 bullets in spread pattern for (var i = -1; i <= 1; i++) { var bullet = new EnemyBullet(); bullet.x = self.x + i * 30; bullet.y = self.y; // Calculate base direction towards hero var dx = hero.x - bullet.x; var dy = hero.y - bullet.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { var baseAngle = Math.atan2(dy, dx); var spreadAngle = baseAngle + i * 0.3; // 0.3 radians spread bullet.directionX = Math.cos(spreadAngle); bullet.directionY = Math.sin(spreadAngle); } else { bullet.directionX = 0; bullet.directionY = 1; } enemyBullets.push(bullet); game.addChild(bullet); } }; self.takeDamage = function (damage) { self.health -= damage; if (self.health <= 0) { LK.effects.flashObject(self, 0xFFFFFF, 500); LK.getSound('enemyHit').play(); return true; // Boss destroyed } // Flash red when taking damage LK.effects.flashObject(self, 0xFF0000, 200); return false; }; return self; }); var Enemy = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 2; self.health = 1; self.shootTimer = 0; self.shootInterval = 120; // 2 seconds at 60fps self.update = function () { // Move toward player var dx = hero.x - self.x; var dy = hero.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { var moveX = dx / distance * self.speed * enemySpeedMultiplier * timeScale; var moveY = dy / distance * self.speed * enemySpeedMultiplier * timeScale; var newX = self.x + moveX; var newY = self.y + moveY; // Check collision with obstacles var canMove = true; for (var i = 0; i < obstacles.length; i++) { var obstacle = obstacles[i]; if (newX + 30 > obstacle.x - 60 && newX - 30 < obstacle.x + 60 && newY + 30 > obstacle.y - 60 && newY - 30 < obstacle.y + 60) { canMove = false; break; } } if (canMove) { self.x = newX; self.y = newY; } } // Shoot at player self.shootTimer += timeScale; if (self.shootTimer >= self.shootInterval) { self.shoot(); self.shootTimer = 0; } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y; // Calculate direction towards hero var dx = hero.x - bullet.x; var dy = hero.y - bullet.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { bullet.directionX = dx / distance; bullet.directionY = dy / distance; } else { bullet.directionX = 0; bullet.directionY = 1; } enemyBullets.push(bullet); game.addChild(bullet); }; self.takeDamage = function (damage) { self.health -= damage; if (self.health <= 0) { LK.effects.flashObject(self, 0xFFFFFF, 200); LK.getSound('enemyHit').play(); return true; // Enemy destroyed } return false; }; return self; }); var EnemyBullet = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.damage = 1; self.directionX = 0; self.directionY = 1; self.update = function () { self.x += self.directionX * self.speed * timeScale; self.y += self.directionY * self.speed * timeScale; }; return self; }); var Hero = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('hero', { anchorX: 0.5, anchorY: 0.5 }); self.maxHealth = 100; self.health = self.maxHealth; self.shootTimer = 0; self.shootInterval = 45; // Slower shooting self.update = function () { // Always shoot when enemies exist if (enemies.length > 0) { self.shootTimer += timeScale; if (self.shootTimer >= self.shootInterval) { self.shoot(); self.shootTimer = 0; } } }; self.shoot = function () { var bullet; if (rpgAmmo > 0) { bullet = new RPGBullet(); rpgAmmo--; updateRPGDisplay(); } else { bullet = new HeroBullet(); } bullet.x = self.x; bullet.y = self.y - 40; // Find nearest enemy to aim at var nearestEnemy = null; var nearestDistance = Infinity; for (var i = 0; i < enemies.length; i++) { var enemy = enemies[i]; var dx = enemy.x - self.x; var dy = enemy.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance < nearestDistance) { nearestDistance = distance; nearestEnemy = enemy; } } // Set bullet direction towards nearest enemy if (nearestEnemy) { var dx = nearestEnemy.x - bullet.x; var dy = nearestEnemy.y - bullet.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { bullet.directionX = dx / distance; bullet.directionY = dy / distance; } else { bullet.directionX = 0; bullet.directionY = -1; } } else { bullet.directionX = 0; bullet.directionY = -1; } heroBullets.push(bullet); game.addChild(bullet); LK.getSound('shoot').play(); }; self.takeDamage = function (damage) { self.health -= damage; LK.effects.flashObject(self, 0xFF0000, 500); LK.getSound('playerHit').play(); // Use extra health if health drops to 20 or below and we have uses available if (self.health <= 20 && extraHealthUses > 0) { self.health += 50; if (self.health > self.maxHealth) { self.health = self.maxHealth; } extraHealthUses--; updateExtraHealthDisplay(); LK.effects.flashObject(self, 0x00FF00, 800); // Green flash for healing } updateHealthBar(); if (self.health <= 0) { LK.showGameOver(); } }; return self; }); var HeroBullet = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 12; self.damage = 1; self.directionX = 0; self.directionY = -1; self.update = function () { self.x += self.directionX * self.speed * timeScale; self.y += self.directionY * self.speed * timeScale; }; return self; }); var Obstacle = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('obstacle', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var RPGBullet = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); graphics.tint = 0xFF0000; // Red color for RPG graphics.scaleX = 2; graphics.scaleY = 2; self.speed = 8; self.damage = 999; // One shot kill self.directionX = 0; self.directionY = -1; self.update = function () { self.x += self.directionX * self.speed * timeScale; self.y += self.directionY * self.speed * timeScale; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x1a1a1a }); /**** * Game Code ****/ // Game variables var enemies = []; var enemyBullets = []; var heroBullets = []; var obstacles = []; var timeScale = 1.0; var isBulletTimeActive = false; var bulletTimeEnergy = 100; var maxBulletTimeEnergy = 100; var bulletTimeDecayRate = 0.5; var bulletTimeRechargeRate = 0.1; var bulletTimeSlowFactor = 0.2; var dragNode = null; var enemySpawnTimer = 0; var enemySpawnInterval = 180; // 3 seconds var waveNumber = 1; var enemiesPerWave = 3; var extraHealthUses = 3; var maxExtraHealthUses = 3; var enemiesKilled = 0; var bossActive = false; var lastScoreCheck = 0; var enemySpeedMultiplier = 1.0; var bossesKilled = 0; var rpgAmmo = 0; // UI elements var scoreTxt = new Text2('0', { size: 60, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); scoreTxt.y = 50; var healthBarBg = LK.getAsset('healthBarBg', { anchorX: 0, anchorY: 0 }); var healthBar = LK.getAsset('healthBar', { anchorX: 0, anchorY: 0 }); var bulletTimeBarBg = LK.getAsset('bulletTimeBarBg', { anchorX: 0, anchorY: 0 }); var bulletTimeBar = LK.getAsset('bulletTimeBar', { anchorX: 0, anchorY: 0 }); LK.gui.topLeft.addChild(healthBarBg); LK.gui.topLeft.addChild(healthBar); LK.gui.topLeft.addChild(bulletTimeBarBg); LK.gui.topLeft.addChild(bulletTimeBar); healthBarBg.x = 120; healthBarBg.y = 20; healthBar.x = 122; healthBar.y = 22; bulletTimeBarBg.x = 120; bulletTimeBarBg.y = 60; bulletTimeBar.x = 122; bulletTimeBar.y = 62; // Add extra health display text first var extraHealthText = new Text2('Extra Health: 3', { size: 40, fill: 0x00FF00 }); extraHealthText.anchor.set(0, 0); LK.gui.topLeft.addChild(extraHealthText); extraHealthText.x = 120; extraHealthText.y = 100; // Add extra health icons after text on the right side var extraHealthIcons = []; for (var i = 0; i < maxExtraHealthUses; i++) { var icon = LK.getAsset('extraHealthIcon', { anchorX: 0.5, anchorY: 0.5 }); LK.gui.topLeft.addChild(icon); icon.x = 380 + i * 40; icon.y = 115; extraHealthIcons.push(icon); } // Add RPG ammo display var rpgText = new Text2('RPG: 0', { size: 40, fill: 0xFF0000 }); rpgText.anchor.set(0, 0); LK.gui.topLeft.addChild(rpgText); rpgText.x = 120; rpgText.y = 140; // Add city background var cityBg = LK.getAsset('cityBackground', { anchorX: 0, anchorY: 0 }); game.addChild(cityBg); // Initialize hero hero = game.addChild(new Hero()); hero.x = 1024; hero.y = 2200; // Create obstacles for (var i = 0; i < 6; i++) { var obstacle = new Obstacle(); obstacle.x = 400 + i % 3 * 600; obstacle.y = 800 + Math.floor(i / 3) * 600; obstacles.push(obstacle); game.addChild(obstacle); } // Update score display function updateScore() { scoreTxt.setText(LK.getScore()); } // Update health bar function updateHealthBar() { var healthPercent = hero.health / hero.maxHealth; healthBar.width = 400 * healthPercent; } // Update bullet time bar function updateBulletTimeBar() { var energyPercent = bulletTimeEnergy / maxBulletTimeEnergy; bulletTimeBar.width = 300 * energyPercent; } // Update extra health display function updateExtraHealthDisplay() { extraHealthText.setText('Extra Health: ' + extraHealthUses); for (var i = 0; i < extraHealthIcons.length; i++) { extraHealthIcons[i].alpha = i < extraHealthUses ? 1.0 : 0.3; } } // Update RPG display function updateRPGDisplay() { rpgText.setText('RPG: ' + rpgAmmo); } // Spawn enemy function spawnEnemy() { var enemy = new Enemy(); var side = Math.floor(Math.random() * 4); switch (side) { case 0: // Top enemy.x = Math.random() * 2048; enemy.y = -50; break; case 1: // Right enemy.x = 2098; enemy.y = Math.random() * 1000 + 100; break; case 2: // Bottom enemy.x = Math.random() * 2048; enemy.y = -50; break; case 3: // Left enemy.x = -50; enemy.y = Math.random() * 1000 + 100; break; } // Scale enemy stats with wave number enemy.speed = 2 + waveNumber * 0.3; enemy.shootInterval = Math.max(60, 120 - waveNumber * 5); enemies.push(enemy); game.addChild(enemy); } // Spawn boss enemy function spawnBoss() { var boss = new Boss(); boss.x = 1024; // Center horizontally boss.y = 200; // Top of screen enemies.push(boss); game.addChild(boss); bossActive = true; } // Spawn additional enemies based on score function spawnScoreBasedEnemies() { for (var i = 0; i < 2; i++) { spawnEnemy(); } } // Create explosion effect function createExplosion(x, y, isBigExplosion) { var explosion = LK.getAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); explosion.x = x; explosion.y = y; explosion.tint = isBigExplosion ? 0xFFFF00 : 0xFF4400; // Yellow for big explosions, orange for normal explosion.scaleX = 0.1; explosion.scaleY = 0.1; game.addChild(explosion); // Animate explosion - scale up and fade out var targetScale = isBigExplosion ? 5 : 3; var duration = isBigExplosion ? 500 : 300; tween(explosion, { scaleX: targetScale, scaleY: targetScale, alpha: 0 }, { duration: duration, easing: tween.easeOut, onFinish: function onFinish() { explosion.destroy(); } }); } // Increase enemy speed every 300 points function checkEnemySpeedIncrease(currentScore) { var speedLevel = Math.floor(currentScore / 300); var newSpeedMultiplier = 1.0 + speedLevel * 0.5; if (newSpeedMultiplier > enemySpeedMultiplier) { enemySpeedMultiplier = newSpeedMultiplier; } } // Handle bullet time activation function activateBulletTime() { if (bulletTimeEnergy > 0) { isBulletTimeActive = true; timeScale = bulletTimeSlowFactor; } } // Handle bullet time deactivation function deactivateBulletTime() { isBulletTimeActive = false; timeScale = 1.0; } // Event handlers function handleMove(x, y, obj) { if (dragNode) { var newX = x; var newY = y; // Keep hero within bounds newX = Math.max(40, Math.min(2008, newX)); newY = Math.max(40, Math.min(2692, newY)); // Check collision with obstacles var canMove = true; for (var i = 0; i < obstacles.length; i++) { var obstacle = obstacles[i]; var tempHero = { x: newX, y: newY, width: 80, height: 80 }; if (newX + 40 > obstacle.x - 60 && newX - 40 < obstacle.x + 60 && newY + 40 > obstacle.y - 60 && newY - 40 < obstacle.y + 60) { canMove = false; break; } } if (canMove) { dragNode.x = newX; dragNode.y = newY; } } } game.move = handleMove; game.down = function (x, y, obj) { dragNode = hero; activateBulletTime(); handleMove(x, y, obj); }; game.up = function (x, y, obj) { dragNode = null; deactivateBulletTime(); }; // Main game update loop game.update = function () { // Update bullet time energy if (isBulletTimeActive) { bulletTimeEnergy -= bulletTimeDecayRate; if (bulletTimeEnergy <= 0) { bulletTimeEnergy = 0; deactivateBulletTime(); } } else { bulletTimeEnergy += bulletTimeRechargeRate; if (bulletTimeEnergy > maxBulletTimeEnergy) { bulletTimeEnergy = maxBulletTimeEnergy; } } updateBulletTimeBar(); // Check for score-based enemy spawning every 200 points var currentScore = LK.getScore(); if (currentScore >= lastScoreCheck + 200) { spawnScoreBasedEnemies(); lastScoreCheck = Math.floor(currentScore / 200) * 200; } // Check for enemy speed increase every 300 points checkEnemySpeedIncrease(currentScore); // Spawn enemies (but not when boss is active) if (!bossActive) { enemySpawnTimer += timeScale; if (enemySpawnTimer >= enemySpawnInterval) { if (enemies.length < enemiesPerWave) { spawnEnemy(); } enemySpawnTimer = 0; // Start new wave if no enemies left if (enemies.length === 0) { waveNumber++; enemiesPerWave = Math.min(8, 3 + Math.floor(waveNumber / 2)); enemySpawnInterval = Math.max(60, 180 - waveNumber * 10); } } } // Update hero bullets for (var i = heroBullets.length - 1; i >= 0; i--) { var bullet = heroBullets[i]; if (bullet.lastY === undefined) { bullet.lastY = bullet.y; } // Remove bullets that go off screen if (bullet.lastY >= -20 && bullet.y < -20) { bullet.destroy(); heroBullets.splice(i, 1); continue; } // Check collision with enemy bullets first var hitEnemyBullet = false; for (var k = enemyBullets.length - 1; k >= 0; k--) { var enemyBullet = enemyBullets[k]; if (bullet.intersects(enemyBullet)) { // Create big explosion at collision point createExplosion((bullet.x + enemyBullet.x) / 2, (bullet.y + enemyBullet.y) / 2, true); // Destroy both bullets bullet.destroy(); enemyBullet.destroy(); heroBullets.splice(i, 1); enemyBullets.splice(k, 1); hitEnemyBullet = true; break; } } if (hitEnemyBullet) { continue; } // Check collision with enemies var hitEnemy = false; for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { // Create explosion effect at enemy position createExplosion(enemy.x, enemy.y); if (enemy.takeDamage(bullet.damage)) { // Enemy destroyed enemy.destroy(); enemies.splice(j, 1); // Award more points for boss var points = enemy.isBoss ? 100 : 10; LK.setScore(LK.getScore() + points); updateScore(); // Track kills and spawn boss if (!enemy.isBoss) { enemiesKilled++; if (enemiesKilled % 10 === 0 && !bossActive) { spawnBoss(); } } else { bossActive = false; bossesKilled++; // Give RPG after every 2 bosses if (bossesKilled % 2 === 0) { rpgAmmo += 1; updateRPGDisplay(); // Flash effect to show RPG gained LK.effects.flashScreen(0xFF0000, 500); } } // Refuel bullet time on enemy kill bulletTimeEnergy += 20; if (bulletTimeEnergy > maxBulletTimeEnergy) { bulletTimeEnergy = maxBulletTimeEnergy; } } bullet.destroy(); heroBullets.splice(i, 1); hitEnemy = true; break; } } if (!hitEnemy) { // Check collision with obstacles for (var j = obstacles.length - 1; j >= 0; j--) { var obstacle = obstacles[j]; if (bullet.intersects(obstacle)) { bullet.destroy(); heroBullets.splice(i, 1); hitEnemy = true; break; } } } if (!hitEnemy) { bullet.lastY = bullet.y; } } // Update enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.lastY === undefined) { bullet.lastY = bullet.y; } // Remove bullets that go off screen if (bullet.lastY <= 2752 && bullet.y > 2752) { bullet.destroy(); enemyBullets.splice(i, 1); continue; } // Check collision with hero if (bullet.intersects(hero)) { hero.takeDamage(bullet.damage); bullet.destroy(); enemyBullets.splice(i, 1); continue; } // Check collision with obstacles var hitObstacle = false; for (var j = obstacles.length - 1; j >= 0; j--) { var obstacle = obstacles[j]; if (bullet.intersects(obstacle)) { bullet.destroy(); enemyBullets.splice(i, 1); hitObstacle = true; break; } } if (!hitObstacle) { bullet.lastY = bullet.y; } } // Check enemy collision with hero for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.intersects(hero)) { hero.takeDamage(1); enemy.destroy(); enemies.splice(i, 1); } } }; // Initialize UI updateScore(); updateHealthBar(); updateBulletTimeBar(); updateExtraHealthDisplay(); updateRPGDisplay();