/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Energy Core (collectible) var Core = Container.expand(function () { var self = Container.call(this); var coreSprite = self.attachAsset('core', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.update = function () { self.y += self.speed; }; return self; }); // Enemy Robot var Enemy = Container.expand(function () { var self = Container.call(this); var enemySprite = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 4 + Math.random() * 2; self.shootCooldown = 60 + Math.floor(Math.random() * 60); // frames self.update = function () { self.y += self.speed; self.shootCooldown--; }; return self; }); // Enemy Bullet var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletSprite = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 13; self.update = function () { self.y += self.speed; }; return self; }); // Player Mech var Mech = Container.expand(function () { var self = Container.call(this); var mechSprite = self.attachAsset('mech', { anchorX: 0.5, anchorY: 0.5 }); self.hp = 3; self.invincible = false; // For drag self.down = function (x, y, obj) {}; self.up = function (x, y, obj) {}; // Flash when hit self.flash = function () { if (self.invincible) return; self.invincible = true; tween(mechSprite, { alpha: 0.3 }, { duration: 100, easing: tween.linear, onFinish: function onFinish() { tween(mechSprite, { alpha: 1 }, { duration: 200, easing: tween.linear, onFinish: function onFinish() { self.invincible = false; } }); } }); }; return self; }); // Player Bullet var MechBullet = Container.expand(function () { var self = Container.call(this); var bulletSprite = self.attachAsset('mechBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -22; self.update = function () { self.y += self.speed; }; return self; }); // Repair Node (objective) var RepairNode = Container.expand(function () { var self = Container.call(this); var repairSprite = self.attachAsset('repair', { anchorX: 0.5, anchorY: 0.5 }); self.repairing = false; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x181c2c }); /**** * Game Code ****/ // Music // Sound effects // Bullet (enemy) // Bullet (player) // Repair node (for "repair" objective) // Energy core collectible // Enemy robot // Mech (player) // Play background music LK.playMusic('mechaverse_bgm'); // Game state variables var mech; var enemies = []; var mechBullets = []; var enemyBullets = []; var cores = []; var repairNodes = []; var dragNode = null; var lastMechX = 0, lastMechY = 0; var score = 0; var coresCollected = 0; var repairsDone = 0; var hp = 3; var gameOver = false; var canShoot = true; var shootCooldown = 0; var level = 1; var levelProgress = 0; var levelTarget = 5; // Number of cores to collect or repairs to do per level // GUI var scoreTxt = new Text2('Cores: 0', { size: 90, fill: "#fff" }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); var hpTxt = new Text2('HP: 3', { size: 90, fill: 0xFF6B6B }); hpTxt.anchor.set(1, 0); LK.gui.topRight.addChild(hpTxt); var levelTxt = new Text2('Level 1', { size: 70, fill: 0xFFE066 }); levelTxt.anchor.set(0, 0); LK.gui.topLeft.addChild(levelTxt); // Place player mech at bottom center mech = new Mech(); mech.x = 2048 / 2; mech.y = 2732 - 350; game.addChild(mech); // Place first repair node (for variety, alternate between core and repair objectives) function spawnRepairNode() { var node = new RepairNode(); node.x = 2048 / 2; node.y = 600 + Math.random() * 600; repairNodes.push(node); game.addChild(node); } // Spawn an energy core at a random x function spawnCore() { var core = new Core(); core.x = 200 + Math.random() * (2048 - 400); core.y = -100; cores.push(core); game.addChild(core); } // Spawn an enemy at a random x function spawnEnemy() { var enemy = new Enemy(); enemy.x = 200 + Math.random() * (2048 - 400); enemy.y = -120; enemies.push(enemy); game.addChild(enemy); } // Fire a bullet from the mech function fireMechBullet() { if (!canShoot) return; var bullet = new MechBullet(); bullet.x = mech.x; bullet.y = mech.y - 120; mechBullets.push(bullet); game.addChild(bullet); canShoot = false; shootCooldown = 12; LK.getSound('shoot').play(); } // Touch/drag controls function handleMove(x, y, obj) { if (dragNode) { // Clamp to game area, avoid top 100px (menu) var nx = Math.max(100, Math.min(2048 - 100, x)); var ny = Math.max(300, Math.min(2732 - 100, y)); dragNode.x = nx; dragNode.y = ny; } } game.move = handleMove; game.down = function (x, y, obj) { // Only allow drag if touch is not in top left 100x100 if (x < 100 && y < 100) return; dragNode = mech; handleMove(x, y, obj); }; game.up = function (x, y, obj) { dragNode = null; }; // Tap to shoot (anywhere except top left) game.tap = function (x, y, obj) { if (x < 100 && y < 100) return; fireMechBullet(); }; // For compatibility, also allow shooting on down if not dragging game.down = function (x, y, obj) { if (x < 100 && y < 100) return; dragNode = mech; handleMove(x, y, obj); fireMechBullet(); }; // Main game update loop game.update = function () { if (gameOver) return; // Cooldown for shooting if (!canShoot) { shootCooldown--; if (shootCooldown <= 0) { canShoot = true; } } // Spawn logic: enemies, cores, repair nodes if (level % 2 === 1) { // Odd levels: collect cores if (LK.ticks % Math.max(60, 120 - level * 10) === 0) { spawnCore(); } if (LK.ticks % Math.max(90, 180 - level * 12) === 0) { spawnEnemy(); } } else { // Even levels: repair nodes if (repairNodes.length === 0) { spawnRepairNode(); } if (LK.ticks % Math.max(90, 180 - level * 12) === 0) { spawnEnemy(); } } // Update enemies for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; enemy.update(); // Enemy shoots if (enemy.shootCooldown <= 0 && enemy.y > 0) { var eb = new EnemyBullet(); eb.x = enemy.x; eb.y = enemy.y + 80; enemyBullets.push(eb); game.addChild(eb); enemy.shootCooldown = 60 + Math.floor(Math.random() * 60); } // Remove if off screen if (enemy.y > 2732 + 100) { enemy.destroy(); enemies.splice(i, 1); continue; } // Collision: enemy with mech if (!mech.invincible && enemy.intersects(mech)) { LK.getSound('hit').play(); mech.flash(); hp--; hpTxt.setText('HP: ' + hp); enemy.destroy(); enemies.splice(i, 1); if (hp <= 0) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); gameOver = true; return; } } } // Update mech bullets for (var i = mechBullets.length - 1; i >= 0; i--) { var b = mechBullets[i]; b.update(); // Remove if off screen if (b.y < -60) { b.destroy(); mechBullets.splice(i, 1); continue; } // Collision: bullet with enemy for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (b.intersects(enemy)) { LK.getSound('hit').play(); enemy.destroy(); enemies.splice(j, 1); b.destroy(); mechBullets.splice(i, 1); break; } } } // Update enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { var eb = enemyBullets[i]; eb.update(); if (eb.y > 2732 + 60) { eb.destroy(); enemyBullets.splice(i, 1); continue; } // Collision: enemy bullet with mech if (!mech.invincible && eb.intersects(mech)) { LK.getSound('hit').play(); mech.flash(); hp--; hpTxt.setText('HP: ' + hp); eb.destroy(); enemyBullets.splice(i, 1); if (hp <= 0) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); gameOver = true; return; } } } // Update cores for (var i = cores.length - 1; i >= 0; i--) { var core = cores[i]; core.update(); if (core.y > 2732 + 60) { core.destroy(); cores.splice(i, 1); continue; } // Collect core if (core.intersects(mech)) { LK.getSound('core').play(); score++; coresCollected++; scoreTxt.setText('Cores: ' + coresCollected); core.destroy(); cores.splice(i, 1); // Level up if enough cores if (coresCollected >= levelTarget) { level++; levelTxt.setText('Level ' + level); coresCollected = 0; repairsDone = 0; scoreTxt.setText(level % 2 === 1 ? 'Cores: 0' : 'Repairs: 0'); // Show win screen if level 5 reached if (level > 5) { LK.showYouWin(); gameOver = true; return; } } } } // Update repair nodes for (var i = repairNodes.length - 1; i >= 0; i--) { var node = repairNodes[i]; // "Repair" by holding mech over node for 1 second if (node.intersects(mech)) { if (!node.repairing) { node.repairing = true; tween(node, { scaleX: 1.3, scaleY: 1.3 }, { duration: 1000, easing: tween.easeInOut, onFinish: function onFinish() { LK.getSound('repair').play(); repairsDone++; scoreTxt.setText('Repairs: ' + repairsDone); node.destroy(); repairNodes.splice(i, 1); // Level up if enough repairs if (repairsDone >= levelTarget) { level++; levelTxt.setText('Level ' + level); coresCollected = 0; repairsDone = 0; scoreTxt.setText(level % 2 === 1 ? 'Cores: 0' : 'Repairs: 0'); if (level > 5) { LK.showYouWin(); gameOver = true; return; } } } }); } } else { if (node.repairing) { node.repairing = false; tween.stop(node, { scaleX: true, scaleY: true }); node.scaleX = 1; node.scaleY = 1; } } } }; // Fade in music at start LK.playMusic('mechaverse_bgm', { fade: { start: 0, end: 0.7, duration: 1200 } });