/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Bomb = Container.expand(function () { var self = Container.call(this); var bombGraphics = self.attachAsset('bomb', { anchorX: 0.5, anchorY: 0.5 }); // Bomb now uses dark colored shape asset instead of tint self.speed = 6; self.active = true; self.update = function () { if (!self.active) return; self.y += self.speed; }; return self; }); var Cloud = Container.expand(function () { var self = Container.call(this); var cloudGraphics = self.attachAsset('cloud', { anchorX: 0.5, anchorY: 0.5 }); cloudGraphics.alpha = 0.6; self.speed = Math.random() * 1 + 0.5; // Random speed between 0.5-1.5 self.scaleX = self.scaleY = Math.random() * 0.8 + 0.6; // Random scale 0.6-1.4 self.update = function () { self.y += self.speed; }; return self; }); var EnemyAircraft = Container.expand(function (type) { var self = Container.call(this); var assetName = type || 'mig29'; var aircraftGraphics = self.attachAsset(assetName, { anchorX: 0.5, anchorY: 0.5 }); self.type = assetName; self.speed = 3; self.active = true; // Set point values based on aircraft type if (self.type === 'mig29') { self.points = 100; self.speed = 3; } else if (self.type === 'su27') { self.points = 150; self.speed = 2.5; } else if (self.type === 'tu95') { self.points = 200; self.speed = 2; } else if (self.type === 'su57') { self.points = 300; self.speed = 2.8; self.hp = 2; // Requires 2 hits to destroy self.maxHP = 2; self.stealthMode = false; self.stealthTimer = 0; } self.update = function () { if (!self.active) return; self.y += self.speed; // SU-57 special abilities if (self.type === 'su57') { // Stealth mode toggle every 3 seconds self.stealthTimer++; if (self.stealthTimer >= 180) { // 3 seconds at 60fps self.stealthMode = !self.stealthMode; self.stealthTimer = 0; if (self.stealthMode) { tween(self, { alpha: 0.3 }, { duration: 500, easing: tween.easeInOut }); } else { tween(self, { alpha: 1.0 }, { duration: 500, easing: tween.easeInOut }); } } // Slight evasive maneuvers if (LK.ticks % 120 === 0) { // Every 2 seconds var evasiveMove = (Math.random() - 0.5) * 100; // Random movement -50 to +50 self.x = Math.max(100, Math.min(1948, self.x + evasiveMove)); } } }; return self; }); var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('missile', { anchorX: 0.5, anchorY: 0.5 }); bulletGraphics.tint = 0xFF4444; // Red tint for enemy bullets self.speed = 8; self.active = true; self.update = function () { if (!self.active) return; self.y += self.speed; }; return self; }); var Explosion = Container.expand(function () { var self = Container.call(this); var explosionGraphics = self.attachAsset('explosion', { anchorX: 0.5, anchorY: 0.5 }); self.lifetime = 20; // frames self.update = function () { self.lifetime--; self.alpha = self.lifetime / 20; self.scaleX = self.scaleY = (20 - self.lifetime) / 10; }; return self; }); var F18Hornet = Container.expand(function () { var self = Container.call(this); var hornetGraphics = self.attachAsset('gripen', { anchorX: 0.5, anchorY: 0.5 }); // Distinctive blue tint for F-18 Hornet hornetGraphics.tint = 0x0066FF; // Scale to make it slightly larger than normal Gripen hornetGraphics.scaleX = 1.1; hornetGraphics.scaleY = 1.1; self.speed = 2.5; // Slightly faster than old friendly self.active = true; self.fireTimer = 0; self.burstCount = 0; self.burstTimer = 0; self.targetEnemy = null; self.update = function () { if (!self.active) return; self.y += self.speed; // Advanced firing system - burst fire self.fireTimer++; self.burstTimer++; // Fire in bursts of 3 missiles every 60 ticks if (self.fireTimer >= 60 && enemies.length > 0 && self.burstCount < 3) { // Find closest enemy var closestEnemy = null; var closestDistance = 999999; for (var i = 0; i < enemies.length; i++) { var enemy = enemies[i]; if (!enemy.active) continue; var distance = Math.abs(enemy.x - self.x) + Math.abs(enemy.y - self.y); if (distance < closestDistance) { closestDistance = distance; closestEnemy = enemy; } } if (closestEnemy && closestDistance < 900) { // Fire with slight spread for burst effect var missile = new Missile(); missile.x = self.x + (self.burstCount - 1) * 20; // Slight horizontal spread missile.y = self.y - 50; missile.isFriendly = true; friendlyMissiles.push(missile); game.addChild(missile); LK.getSound('missile_fire').play(); self.burstCount++; } self.fireTimer = 0; } // Reset burst after delay if (self.burstCount >= 3 && self.burstTimer >= 90) { self.burstCount = 0; self.burstTimer = 0; } }; return self; }); var GroundExplosion = Container.expand(function () { var self = Container.call(this); var explosionGraphics = self.attachAsset('groundExplosion', { anchorX: 0.5, anchorY: 0.5 }); explosionGraphics.alpha = 1; explosionGraphics.scaleX = 0.2; explosionGraphics.scaleY = 0.2; self.active = true; // Start animation immediately tween(explosionGraphics, { scaleX: 2, scaleY: 2, alpha: 0 }, { duration: 800, easing: tween.easeOut, onFinish: function onFinish() { self.active = false; } }); return self; }); var Missile = Container.expand(function () { var self = Container.call(this); var missileGraphics = self.attachAsset('missile', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -12; self.active = true; self.update = function () { if (!self.active) return; self.y += self.speed; }; return self; }); var PlayerGripen = Container.expand(function () { var self = Container.call(this); var gripenGraphics = self.attachAsset('gripen', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 8; self.active = true; return self; }); var Raindrop = Container.expand(function () { var self = Container.call(this); var dropGraphics = self.attachAsset('raindrop', { anchorX: 0.5, anchorY: 0.5 }); dropGraphics.alpha = 0.6; self.speed = Math.random() * 8 + 12; // Random speed between 12-20 self.active = true; self.update = function () { if (!self.active) return; self.y += self.speed; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x87CEEB // Sky blue background }); /**** * Game Code ****/ // Sound effects // Missiles // Enemy aircraft types // Player aircraft - JAS Gripen (distinctive delta wing design) // Game variables var player; var missiles = []; var enemies = []; var enemyBullets = []; var bombs = []; var explosions = []; var waveNumber = 1; var enemiesSpawned = 0; var enemiesInWave = 5; var spawnTimer = 0; var missileTimer = 0; var enemyFireTimer = 0; var waveTimer = 0; var clouds = []; var cloudSpawnTimer = 0; var groundExplosions = []; var raindrops = []; var rainSpawnTimer = 0; var weatherIntensity = 0.3; // 0 = no rain, 1 = heavy rain // Friendly aircraft system var friendlyAircraft = []; var friendlyMissiles = []; var friendlySpawnTimer = 0; // Day/night cycle variables var timeOfDay = 0; // 0 = night, 0.5 = dawn/dusk, 1 = day var dayNightTimer = 0; var dayNightCycleDuration = 1800; // 30 seconds for full cycle (60fps * 30) var isTransitioning = false; // Player health system var playerHP = 3; var maxHP = 3; // UI elements var scoreTxt = new Text2('Score: 0', { size: 60, fill: 0xFFFFFF }); scoreTxt.anchor.set(0, 0); scoreTxt.x = 120; scoreTxt.y = 50; LK.gui.topLeft.addChild(scoreTxt); var hpTxt = new Text2('HP: 3/3', { size: 60, fill: 0xFF0000 }); hpTxt.anchor.set(0, 0); hpTxt.x = 120; hpTxt.y = 120; LK.gui.topLeft.addChild(hpTxt); var waveTxt = new Text2('Wave: 1', { size: 50, fill: 0xFFFFFF }); waveTxt.anchor.set(1, 0); waveTxt.y = 60; // Move wave text down to make room for pause button LK.gui.topRight.addChild(waveTxt); // Add pause button var pauseTxt = new Text2('PAUSE', { size: 40, fill: 0xFFFFFF }); pauseTxt.anchor.set(1, 0); pauseTxt.x = -10; pauseTxt.y = 10; LK.gui.topRight.addChild(pauseTxt); // Make pause text clickable pauseTxt.down = function (x, y, obj) { LK.pauseGame(); // Trigger the built-in pause functionality }; // Initialize player player = new PlayerGripen(); player.x = 1024; // Center horizontally player.y = 2500; // Near bottom of screen game.addChild(player); // Initialize HP display updateHP(); // Touch/mouse controls for player movement var isDragging = false; game.down = function (x, y, obj) { isDragging = true; player.x = x; }; game.move = function (x, y, obj) { if (isDragging && player.active) { player.x = Math.max(60, Math.min(1988, x)); // Keep player on screen } }; game.up = function (x, y, obj) { isDragging = false; }; // Spawn enemy function function spawnEnemy() { var enemyTypes = ['mig29', 'su27', 'tu95']; // Add SU-57 from wave 3 onwards with lower spawn rate if (waveNumber >= 3 && Math.random() < 0.2) { enemyTypes.push('su57'); } var randomType = enemyTypes[Math.floor(Math.random() * enemyTypes.length)]; var enemy = new EnemyAircraft(randomType); enemy.x = Math.random() * 1800 + 124; // Random X position across screen enemy.y = -100; // Start above screen // Adjust speed based on wave enemy.speed += (waveNumber - 1) * 0.5; enemies.push(enemy); game.addChild(enemy); enemiesSpawned++; } // Fire missile function function fireMissile() { if (!player.active) return; var missile = new Missile(); missile.x = player.x; missile.y = player.y - 70; missiles.push(missile); game.addChild(missile); LK.getSound('missile_fire').play(); } // Spawn friendly aircraft function function spawnFriendlyAircraft() { var friendly = new F18Hornet(); friendly.x = Math.random() * 1800 + 124; // Random X position friendly.y = 2800; // Start from bottom // Add entry animation tween(friendly, { scaleX: 1.1, scaleY: 1.1 }, { duration: 500, easing: tween.easeOut }); friendlyAircraft.push(friendly); game.addChild(friendly); } // Create explosion function function createExplosion(x, y) { var explosion = new Explosion(); explosion.x = x; explosion.y = y; explosions.push(explosion); game.addChild(explosion); LK.getSound('explosion').play(); } // Create ground explosion function function createGroundExplosion(x, y) { var groundExplosion = new GroundExplosion(); groundExplosion.x = x; groundExplosion.y = y; groundExplosions.push(groundExplosion); game.addChild(groundExplosion); LK.getSound('explosion').play(); } // Update score display function updateScore() { scoreTxt.setText('Score: ' + LK.getScore()); } // Update wave display function updateWave() { waveTxt.setText('Wave: ' + waveNumber); } // Update HP display function updateHP() { hpTxt.setText('HP: ' + playerHP + '/' + maxHP); if (playerHP <= 1) { hpTxt.fill = 0xFF0000; // Red when low HP } else if (playerHP <= 2) { hpTxt.fill = 0xFFFF00; // Yellow when medium HP } else { hpTxt.fill = 0x00FF00; // Green when full HP } } // Main game update loop game.update = function () { if (!player.active) return; // Fire missiles automatically missileTimer++; if (missileTimer >= 20) { // Fire every 20 ticks (3 times per second) fireMissile(); missileTimer = 0; } // Spawn enemies spawnTimer++; var spawnRate = Math.max(60 - waveNumber * 5, 30); // Faster spawning each wave if (spawnTimer >= spawnRate && enemiesSpawned < enemiesInWave) { spawnEnemy(); spawnTimer = 0; } // Check for missile-enemy collisions for (var m = missiles.length - 1; m >= 0; m--) { var missile = missiles[m]; if (!missile.active) continue; // Remove missiles that go off screen if (missile.y < -50) { missile.destroy(); missiles.splice(m, 1); continue; } // Check collision with enemies for (var e = enemies.length - 1; e >= 0; e--) { var enemy = enemies[e]; if (!enemy.active) continue; if (missile.intersects(enemy)) { // Handle SU-57 HP system if (enemy.type === 'su57' && enemy.hp > 1) { enemy.hp--; // Flash red when hit but not destroyed tween(enemy, { tint: 0xFF0000 }, { duration: 200, easing: tween.easeOut, onFinish: function onFinish() { tween(enemy, { tint: 0xFFFFFF }, { duration: 200, easing: tween.easeOut }); } }); createExplosion(enemy.x, enemy.y); missile.active = false; missile.destroy(); missiles.splice(m, 1); break; } else { // Create explosion createExplosion(enemy.x, enemy.y); // Award points LK.setScore(LK.getScore() + enemy.points); updateScore(); // Remove missile and enemy missile.active = false; enemy.active = false; missile.destroy(); enemy.destroy(); missiles.splice(m, 1); enemies.splice(e, 1); LK.getSound('enemy_destroyed').play(); break; } } } } // Update and check enemy collisions with player for (var e = enemies.length - 1; e >= 0; e--) { var enemy = enemies[e]; if (!enemy.active) continue; // Remove enemies that go off screen if (enemy.y > 2800) { enemy.destroy(); enemies.splice(e, 1); continue; } // Check collision with player if (enemy.intersects(player)) { // Take damage playerHP--; updateHP(); createExplosion(enemy.x, enemy.y); enemy.active = false; enemy.destroy(); enemies.splice(e, 1); // Check if player is dead if (playerHP <= 0) { createExplosion(player.x, player.y); player.active = false; LK.setTimeout(function () { LK.showGameOver(); }, 1000); return; } } } // Enemy firing system enemyFireTimer++; if (enemyFireTimer >= 90) { // Fire every 1.5 seconds if (enemies.length > 0) { var randomEnemy = enemies[Math.floor(Math.random() * enemies.length)]; if (randomEnemy.active && randomEnemy.y > 200 && randomEnemy.y < 2000) { if (randomEnemy.type === 'tu95') { // Tu-95 drops bombs var bomb = new Bomb(); bomb.x = randomEnemy.x; bomb.y = randomEnemy.y + 50; bombs.push(bomb); game.addChild(bomb); } else if (randomEnemy.type === 'su57') { // SU-57 fires advanced missiles aimed at player var bullet = new EnemyBullet(); bullet.x = randomEnemy.x; bullet.y = randomEnemy.y + 50; // Aim toward player position var dx = player.x - bullet.x; var distance = Math.abs(dx); if (distance > 50) { // Only adjust if player is not directly below bullet.x += dx * 0.3; // Adjust firing position toward player } bullet.speed = 10; // Faster than normal bullets enemyBullets.push(bullet); game.addChild(bullet); } else { // Other aircraft fire bullets var bullet = new EnemyBullet(); bullet.x = randomEnemy.x; bullet.y = randomEnemy.y + 50; enemyBullets.push(bullet); game.addChild(bullet); } } } enemyFireTimer = 0; } // Update and check enemy bullets for (var eb = enemyBullets.length - 1; eb >= 0; eb--) { var bullet = enemyBullets[eb]; if (!bullet.active) continue; // Remove bullets that go off screen if (bullet.y > 2800) { bullet.destroy(); enemyBullets.splice(eb, 1); continue; } // Check collision with player if (bullet.intersects(player)) { // Take damage playerHP--; updateHP(); createExplosion(bullet.x, bullet.y); bullet.destroy(); enemyBullets.splice(eb, 1); // Check if player is dead if (playerHP <= 0) { createExplosion(player.x, player.y); player.active = false; LK.setTimeout(function () { LK.showGameOver(); }, 1000); return; } } } // Update and check bombs for (var b = bombs.length - 1; b >= 0; b--) { var bomb = bombs[b]; if (!bomb.active) continue; // Remove bombs that go off screen if (bomb.y > 2800) { // Bomb hits ground - create explosion createExplosion(bomb.x, bomb.y); createGroundExplosion(bomb.x, bomb.y); bomb.destroy(); bombs.splice(b, 1); continue; } // Check collision with player if (bomb.intersects(player)) { // Take damage playerHP--; updateHP(); createExplosion(bomb.x, bomb.y); bomb.destroy(); bombs.splice(b, 1); // Check if player is dead if (playerHP <= 0) { createExplosion(player.x, player.y); player.active = false; LK.setTimeout(function () { LK.showGameOver(); }, 1000); return; } } } // Update explosions for (var ex = explosions.length - 1; ex >= 0; ex--) { var explosion = explosions[ex]; if (explosion.lifetime <= 0) { explosion.destroy(); explosions.splice(ex, 1); } } // Check if wave is complete if (enemiesSpawned >= enemiesInWave && enemies.length === 0) { waveNumber++; enemiesSpawned = 0; enemiesInWave += 2; // More enemies each wave updateWave(); // Brief pause between waves waveTimer = 120; // 2 second pause } // Handle wave timer if (waveTimer > 0) { waveTimer--; } // Spawn clouds for background atmosphere cloudSpawnTimer++; if (cloudSpawnTimer >= 180) { // Spawn cloud every 3 seconds var cloud = new Cloud(); cloud.x = Math.random() * 2048; // Random X position across screen cloud.y = -100; // Start above screen clouds.push(cloud); game.addChild(cloud); cloudSpawnTimer = 0; } // Update and remove off-screen clouds for (var c = clouds.length - 1; c >= 0; c--) { var cloud = clouds[c]; if (cloud.y > 2800) { // Remove when off screen cloud.destroy(); clouds.splice(c, 1); } } // Update and remove finished ground explosions for (var ge = groundExplosions.length - 1; ge >= 0; ge--) { var groundExplosion = groundExplosions[ge]; if (!groundExplosion.active) { groundExplosion.destroy(); groundExplosions.splice(ge, 1); } } // Weather system - spawn raindrops rainSpawnTimer++; var rainSpawnRate = Math.max(5 - Math.floor(weatherIntensity * 4), 1); // More frequent with higher intensity if (rainSpawnTimer >= rainSpawnRate) { // Spawn multiple raindrops based on intensity var dropsToSpawn = Math.floor(weatherIntensity * 5) + 1; for (var rd = 0; rd < dropsToSpawn; rd++) { var raindrop = new Raindrop(); raindrop.x = Math.random() * 2048; // Random X position across screen raindrop.y = -20; // Start above screen raindrops.push(raindrop); game.addChild(raindrop); } rainSpawnTimer = 0; } // Update and remove off-screen raindrops for (var rd = raindrops.length - 1; rd >= 0; rd--) { var raindrop = raindrops[rd]; if (raindrop.y > 2800) { // Remove when off screen raindrop.destroy(); raindrops.splice(rd, 1); } } // Day/night cycle system dayNightTimer++; if (dayNightTimer >= dayNightCycleDuration / 4) { // Update time every quarter cycle dayNightTimer = 0; var oldTimeOfDay = timeOfDay; // Cycle through time: 0 -> 0.25 -> 0.5 -> 0.75 -> 1 -> 0.75 -> 0.5 -> 0.25 -> 0 if (timeOfDay >= 1) { timeOfDay = 0.75; } else if (timeOfDay >= 0.75) { timeOfDay = 0.5; } else if (timeOfDay >= 0.5) { timeOfDay = 0.25; } else if (timeOfDay >= 0.25) { timeOfDay = 0; } else { timeOfDay = 0.25; } // Only transition if time changed and not already transitioning if (oldTimeOfDay !== timeOfDay && !isTransitioning) { isTransitioning = true; var targetColor; var transitionDuration = 3000; // 3 seconds for smooth transition // Determine base color based on time of day if (timeOfDay === 0) { // Night - dark blue targetColor = 0x191970; // Midnight blue } else if (timeOfDay === 0.25) { // Dawn/Early morning - purple-pink targetColor = 0x4B0082; // Indigo } else if (timeOfDay === 0.5) { // Day - bright sky blue targetColor = 0x87CEEB; // Sky blue } else if (timeOfDay === 0.75) { // Dusk/Evening - orange-red targetColor = 0xFF4500; // Orange red } // Apply weather modifications to the base color if (weatherIntensity > 0.6) { // Heavy rain - make darker if (timeOfDay === 0) targetColor = 0x0F0F23; // Darker night else if (timeOfDay === 0.25) targetColor = 0x2F1B69; // Darker dawn else if (timeOfDay === 0.5) targetColor = 0x4682B4; // Darker day else if (timeOfDay === 0.75) targetColor = 0xB8460E; // Darker dusk } else if (weatherIntensity > 0.4) { // Medium rain - slightly darker if (timeOfDay === 0) targetColor = 0x151560; // Slightly darker night else if (timeOfDay === 0.25) targetColor = 0x3D2376; // Slightly darker dawn else if (timeOfDay === 0.5) targetColor = 0x6495ED; // Slightly darker day else if (timeOfDay === 0.75) targetColor = 0xD2691E; // Slightly darker dusk } // Smooth transition to new color tween(game, { backgroundColor: targetColor }, { duration: transitionDuration, easing: tween.easeInOut, onFinish: function onFinish() { isTransitioning = false; } }); } } // Spawn friendly aircraft occasionally friendlySpawnTimer++; if (friendlySpawnTimer >= 1800 && friendlyAircraft.length < 2) { // Every 30 seconds, max 2 friendly spawnFriendlyAircraft(); friendlySpawnTimer = 0; } // Update friendly aircraft for (var fa = friendlyAircraft.length - 1; fa >= 0; fa--) { var friendly = friendlyAircraft[fa]; if (!friendly.active) continue; // Remove if goes off screen if (friendly.y < -100) { friendly.destroy(); friendlyAircraft.splice(fa, 1); continue; } } // Update friendly missiles and check collisions with enemies for (var fm = friendlyMissiles.length - 1; fm >= 0; fm--) { var fMissile = friendlyMissiles[fm]; if (!fMissile.active) continue; // Remove if off screen if (fMissile.y < -50) { fMissile.destroy(); friendlyMissiles.splice(fm, 1); continue; } // Check collision with enemies for (var e = enemies.length - 1; e >= 0; e--) { var enemy = enemies[e]; if (!enemy.active) continue; if (fMissile.intersects(enemy)) { // Handle SU-57 HP system if (enemy.type === 'su57' && enemy.hp > 1) { enemy.hp--; // Flash red when hit but not destroyed tween(enemy, { tint: 0xFF0000 }, { duration: 200, easing: tween.easeOut, onFinish: function onFinish() { tween(enemy, { tint: 0xFFFFFF }, { duration: 200, easing: tween.easeOut }); } }); createExplosion(enemy.x, enemy.y); fMissile.active = false; fMissile.destroy(); friendlyMissiles.splice(fm, 1); break; } else { // Create explosion createExplosion(enemy.x, enemy.y); // Award points (friendly assist gives half points) LK.setScore(LK.getScore() + Math.floor(enemy.points / 2)); updateScore(); // Remove missile and enemy fMissile.active = false; enemy.active = false; fMissile.destroy(); enemy.destroy(); friendlyMissiles.splice(fm, 1); enemies.splice(e, 1); LK.getSound('enemy_destroyed').play(); break; } } } } // Change weather intensity over time (less frequent than before) if (LK.ticks % 900 === 0) { // Every 15 seconds weatherIntensity = Math.random() * 0.8 + 0.2; // Random intensity between 0.2-1.0 } };