/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Dragon = Container.expand(function () { var self = Container.call(this); var dragonGraphics = self.attachAsset('dragon', { anchorX: 0.5, anchorY: 0.5 }); self.health = 50; self.maxHealth = 50; self.speed = 2; self.shootTimer = 0; self.moveDirection = 1; self.phase = 1; self.update = function () { self.x += self.moveDirection * self.speed; if (self.x < 200 || self.x > 1848) { self.moveDirection *= -1; } self.shootTimer++; if (self.phase == 1 && self.shootTimer >= 40) { self.shootTimer = 0; for (var i = -1; i <= 1; i++) { var bullet = new DragonBullet(); bullet.x = self.x + i * 80; bullet.y = self.y + 100; bullet.direction = i; dragonBullets.push(bullet); game.addChild(bullet); } } else if (self.phase == 2 && self.shootTimer >= 25) { self.shootTimer = 0; for (var i = -2; i <= 2; i++) { var bullet = new DragonBullet(); bullet.x = self.x + i * 60; bullet.y = self.y + 100; bullet.direction = i * 0.5; dragonBullets.push(bullet); game.addChild(bullet); } } if (self.health < self.maxHealth * 0.5 && self.phase == 1) { self.phase = 2; self.speed = 3; dragonGraphics.tint = 0xff6666; } }; self.takeDamage = function () { self.health--; LK.effects.flashObject(self, 0xff0000, 200); if (self.health <= 0) { LK.getSound('explosion').play(); return true; } LK.getSound('hit').play(); return false; }; return self; }); var DragonBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('dragonBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.direction = 1; self.update = function () { self.y += self.speed; self.x += self.direction * 2; }; return self; }); var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 3; self.shootTimer = 0; self.moveDirection = 1; self.update = function () { self.y += self.speed; self.x += self.moveDirection * 1.5; if (self.x < 100 || self.x > 1948) { self.moveDirection *= -1; } self.shootTimer++; if (self.shootTimer >= 60 && Math.random() < 0.02) { self.shootTimer = 0; var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + 50; enemyBullets.push(bullet); game.addChild(bullet); } }; 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 = 8; self.update = function () { self.y += self.speed; }; return self; }); var Player = Container.expand(function () { var self = Container.call(this); var playerGraphics = self.attachAsset('player', { anchorX: 0.5, anchorY: 0.5 }); self.health = 3; self.shootTimer = 0; self.invulnerable = 0; self.update = function () { if (self.invulnerable > 0) { self.invulnerable--; playerGraphics.alpha = self.invulnerable % 10 < 5 ? 0.5 : 1.0; } else { playerGraphics.alpha = 1.0; } self.shootTimer++; if (self.shootTimer >= 15) { self.shootTimer = 0; var bullet = new PlayerBullet(); bullet.x = self.x; bullet.y = self.y - 60; playerBullets.push(bullet); game.addChild(bullet); LK.getSound('shoot').play(); } }; self.takeDamage = function () { if (self.invulnerable <= 0) { self.health--; self.invulnerable = 120; LK.effects.flashObject(self, 0xff0000, 500); LK.getSound('hit').play(); return true; } return false; }; 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 = -12; self.update = function () { self.y += self.speed; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x1976D2 }); /**** * Game Code ****/ var player = null; var enemies = []; var dragon = null; var playerBullets = []; var enemyBullets = []; var dragonBullets = []; var currentLevel = 1; var enemiesKilled = 0; var enemiesNeeded = 0; var levelComplete = false; var dragNode = null; var levelText = new Text2('Level 1', { size: 100, fill: 0xFFFFFF }); levelText.anchor.set(0.5, 0); LK.gui.top.addChild(levelText); var scoreText = new Text2('Score: 0', { size: 60, fill: 0xFFFFFF }); scoreText.anchor.set(1, 0); scoreText.x = -20; scoreText.y = 20; LK.gui.topRight.addChild(scoreText); var healthText = new Text2('Health: 3', { size: 60, fill: 0xFFFFFF }); healthText.anchor.set(0, 0); healthText.x = 120; healthText.y = 20; LK.gui.topLeft.addChild(healthText); function startLevel(level) { currentLevel = level; enemiesKilled = 0; levelComplete = false; levelText.setText('Level ' + level); enemies = []; dragon = null; if (level < 7) { enemiesNeeded = 5 + level * 2; for (var i = 0; i < Math.min(3 + level, 8); i++) { spawnEnemy(); } } else { dragon = new Dragon(); dragon.x = 1024; dragon.y = 300; game.addChild(dragon); } } function spawnEnemy() { var enemy = new Enemy(); enemy.x = Math.random() * 1600 + 224; enemy.y = Math.random() * -500 - 100; enemy.speed = 2 + currentLevel * 0.5; enemies.push(enemy); game.addChild(enemy); } function handleMove(x, y, obj) { if (dragNode && player) { dragNode.x = Math.max(50, Math.min(1998, x)); dragNode.y = Math.max(200, Math.min(2600, y)); } } player = new Player(); player.x = 1024; player.y = 2400; game.addChild(player); startLevel(1); game.move = handleMove; game.down = function (x, y, obj) { dragNode = player; handleMove(x, y, obj); }; game.up = function (x, y, obj) { dragNode = null; }; game.update = function () { scoreText.setText('Score: ' + LK.getScore()); healthText.setText('Health: ' + (player ? player.health : 0)); if (!player || player.health <= 0) { LK.showGameOver(); return; } // Player bullets vs enemies for (var i = playerBullets.length - 1; i >= 0; i--) { var bullet = playerBullets[i]; if (bullet.y < -50) { bullet.destroy(); playerBullets.splice(i, 1); continue; } var hit = false; for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { LK.setScore(LK.getScore() + 100); bullet.destroy(); playerBullets.splice(i, 1); enemy.destroy(); enemies.splice(j, 1); enemiesKilled++; hit = true; break; } } if (!hit && dragon && bullet.intersects(dragon)) { LK.setScore(LK.getScore() + 50); bullet.destroy(); playerBullets.splice(i, 1); if (dragon.takeDamage()) { dragon.destroy(); dragon = null; LK.setScore(LK.getScore() + 5000); LK.showYouWin(); return; } } } // Enemy bullets vs player for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.y > 2782) { bullet.destroy(); enemyBullets.splice(i, 1); continue; } if (bullet.intersects(player)) { bullet.destroy(); enemyBullets.splice(i, 1); player.takeDamage(); } } // Dragon bullets vs player for (var i = dragonBullets.length - 1; i >= 0; i--) { var bullet = dragonBullets[i]; if (bullet.y > 2782 || bullet.x < -50 || bullet.x > 2098) { bullet.destroy(); dragonBullets.splice(i, 1); continue; } if (bullet.intersects(player)) { bullet.destroy(); dragonBullets.splice(i, 1); player.takeDamage(); } } // Player vs enemies collision for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.y > 2782) { enemy.destroy(); enemies.splice(i, 1); continue; } if (enemy.intersects(player)) { enemy.destroy(); enemies.splice(i, 1); player.takeDamage(); } } // Player vs dragon collision if (dragon && dragon.intersects(player)) { player.takeDamage(); } // Level progression if (currentLevel < 7) { if (enemiesKilled >= enemiesNeeded) { if (!levelComplete) { levelComplete = true; LK.setTimeout(function () { if (currentLevel < 6) { startLevel(currentLevel + 1); } else { startLevel(7); } }, 2000); } } else if (enemies.length < 2 && enemiesKilled < enemiesNeeded) { spawnEnemy(); } } };