/**** * Classes ****/ var Puff = Container.expand(function () { var self = Container.call(this); var puffGraphics = self.attachAsset('puff', { anchorX: 0.5, anchorY: 0.5 }); self.tick = function () { self.scale.x += 0.05; self.scale.y += 0.05; self.alpha -= 0.05; if (self.alpha <= 0) { self.destroy(); } }; }); var ClickTarget = Container.expand(function () { var self = Container.call(this); var targetGraphics = self.attachAsset('clickTarget', { anchorX: 0.5, anchorY: 0.5 }); targetGraphics.alpha = 0.4; self.x = 0; self.y = 0; self.setVisible = function (isVisible) { self.visible = isVisible; }; }); var HealthBar = Container.expand(function (maxHealth, currentHealth) { var self = Container.call(this); self.maxHealth = maxHealth; self.currentHealth = currentHealth; var background = self.attachAsset('healthBarBackground', { anchorX: 0.5, anchorY: 1 }); var foreground = self.attachAsset('healthBarForeground', { anchorX: 0.5, anchorY: 1 }); foreground.y -= 5; self.updateHealth = function (newHealth) { self.currentHealth = newHealth; var healthRatio = self.currentHealth / self.maxHealth; foreground.scale.x = healthRatio; }; }); var Hero = Container.expand(function () { var self = Container.call(this); self.findNearestZombie = function (zombies) { var nearestZombie = null; var nearestDistance = Infinity; for (var i = 0; i < zombies.length; i++) { var dx = zombies[i].x - self.x; var dy = zombies[i].y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance < nearestDistance) { nearestZombie = zombies[i]; nearestDistance = distance; } } return nearestZombie; }; self.targetX = 2048 / 2; self.targetY = 2732 / 2; var heroShadow = self.attachAsset('heroShadow', { anchorX: 0.5, anchorY: 0.5 }); heroShadow.alpha = 0.3; heroShadow.zIndex = -1; self.addChild(heroShadow); var heroGraphics = self.attachAsset('hero', { anchorX: 0.4, anchorY: 0.3 }); self.addChild(heroGraphics); var initialHeroRotation = -0.0872665 - 35 * (Math.PI / 180); heroGraphics.rotation = initialHeroRotation; self.healthBar = self.addChild(new HealthBar(100, 100)); self.healthBar.y = -125; self.move = function () { if (self.targetX !== undefined && self.targetY !== undefined) { var dx = self.targetX - self.x; var dy = self.targetY - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 5) { var speed = 5; self.x += dx / distance * speed; self.y += dy / distance * speed; var angle = Math.atan2(dy, dx); heroGraphics.rotation = angle + initialHeroRotation; return false; } else { self.x = self.targetX; self.y = self.targetY; return true; } } else { return true; } }; self.shootDelay = 0; self.shoot = function (zombies) { if (self.shootDelay <= 0 && self.targetX === self.x && self.targetY === self.y) { var nearestZombie = self.findNearestZombie(zombies); if (nearestZombie) { var dx = nearestZombie.x - self.x; var dy = nearestZombie.y - self.y; var direction = Math.atan2(dy, dx); var bullet = new Bullet(self, direction); self.shootDelay = 15; heroGraphics.rotation = direction + initialHeroRotation; return bullet; } } self.shootDelay--; return null; }; }); var Zombie = Container.expand(function (hero) { var self = Container.call(this); var zombieGraphics = self.attachAsset('zombie', { anchorX: 0.5, anchorY: 0.5 }); zombieGraphics.rotation = -Math.PI / 2; self.target = hero; self.healthBar = self.addChild(new HealthBar(100, 100)); self.healthBar.y = -125; self.spawn = function () { var side = Math.floor(Math.random() * 4); switch (side) { case 0: self.x = Math.random() * 2048; self.y = -50; break; case 1: self.x = 2048 + 50; self.y = Math.random() * 2732; break; case 2: self.x = Math.random() * 2048; self.y = 2732 + 50; break; case 3: self.x = -50; self.y = Math.random() * 2732; break; } }; self.move = function (zombies) { var dx = self.target.x - self.x; var dy = self.target.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { var speed = 2; self.x += dx / distance * speed; self.y += dy / distance * speed; var angle = Math.atan2(dy, dx); zombieGraphics.rotation = angle - Math.PI / 2; } for (var i = 0; i < zombies.length; i++) { if (zombies[i] !== self) { var dx2 = zombies[i].x - self.x; var dy2 = zombies[i].y - self.y; var distance2 = Math.sqrt(dx2 * dx2 + dy2 * dy2); if (distance2 < 1000) { self.x += dx2 / distance2 * 1; self.y += dy2 / distance2 * 1; } } } }; self.removed = false; self.merge = function (otherZombie) { if (otherZombie.removed) { return false; } var newMaxHealth = self.healthBar.maxHealth + otherZombie.healthBar.maxHealth; self.x = (self.x + otherZombie.x) / 2; self.y = (self.y + otherZombie.y) / 2; self.healthBar.maxHealth = newMaxHealth * 0.8; self.healthBar.updateHealth((self.healthBar.currentHealth + otherZombie.healthBar.currentHealth) * 0.8); self.scale.x = (self.scale.x + otherZombie.scale.x) / 2 * 1.2; self.scale.y = (self.scale.y + otherZombie.scale.y) / 2 * 1.2; otherZombie.removed = true; return true; }; self.hit = function () { var newHealth = self.healthBar.currentHealth - 10; self.healthBar.updateHealth(newHealth); if (newHealth <= 0) { return true; } }; }); var Bullet = Container.expand(function (shooter, direction) { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.x = shooter.x - Math.cos(direction - .5) * 55; self.y = shooter.y - Math.sin(direction - .5) * 55; self.direction = direction; self.hit = false; self.move = function () { self.x += Math.cos(self.direction) * self.speed; self.y += Math.sin(self.direction) * self.speed; bulletGraphics.rotation = self.direction + Math.PI / 2; }; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ var background = game.attachAsset('background', { anchorX: 0.5, anchorY: 0.5 }); background.x = 2048 / 2 - 80; background.y = 2732 / 2; background.alpha = .4; var hero, zombies = [], bullets = [], effects = []; var scoreTxt, timer, score = 0; hero = game.addChild(new Hero()); hero.x = 2048 / 2; hero.y = 2732 / 2; scoreTxt = new Text2('0', { size: 120, fill: "#ffffff", font: 'Impact', dropShadow: true, dropShadowColor: '#000000', dropShadowBlur: 4, dropShadowAngle: Math.PI / 6, dropShadowDistance: 6 }); scoreTxt.anchor.set(.5, 0); LK.gui.topCenter.addChild(scoreTxt); LK.on('tick', function () { if (hero.move() && game.clickTarget) { game.clickTarget.setVisible(false); } if (hero.shootDelay <= 0) { var newBullet = hero.shoot(zombies); if (newBullet) { bullets.push(newBullet); game.addChildAt(newBullet, game.getChildIndex(hero)); } } hero.shootDelay--; for (var i = 0; i < zombies.length; i++) { zombies[i].move(zombies); } for (var i = bullets.length - 1; i >= 0; i--) { bullets[i].move(); if (bullets[i].x < 0 || bullets[i].x > 2048 || bullets[i].y < 0 || bullets[i].y > 2732) { bullets[i].destroy(); bullets.splice(i, 1); } } for (var i = zombies.length - 1; i >= 0; i--) { for (var j = bullets.length - 1; j >= 0; j--) { if (bullets[j].intersects(zombies[i]) && !bullets[j].hit) { bullets[j].hit = true; if (zombies[i].hit()) { zombies[i].destroy(); zombies.splice(i, 1); score++; LK.setScore(score); scoreTxt.setText(score); } bullets[j].destroy(); bullets.splice(j, 1); } } for (var k = 0; k < zombies.length; k++) { if (zombies[i] !== zombies[k] && zombies[i] && zombies[k] && zombies[i].intersects(zombies[k])) { if (zombies[i].merge(zombies[k])) { var puff = new Puff(); puff.x = zombies[i].x; puff.y = zombies[i].y; effects.push(puff); game.addChild(puff); zombies[k].destroy(); zombies.splice(k, 1); } } } } for (var i = 0; i < zombies.length; i++) { if (hero.intersects(zombies[i])) { hero.healthBar.updateHealth(hero.healthBar.currentHealth - 0.5); } } for (var i = effects.length - 1; i >= 0; i--) { effects[i].tick(); if (effects[i].alpha <= 0) { effects.splice(i, 1); } } if (isGameOver()) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); } }); game.on('down', function (obj) { var pos = obj.event.getLocalPosition(game); hero.targetX = pos.x; hero.targetY = pos.y; if (!game.clickTarget) { game.clickTarget = game.addChildAt(new ClickTarget(), game.getChildIndex(background) + 1); } game.clickTarget.x = pos.x; game.clickTarget.y = pos.y; game.clickTarget.setVisible(true); }); var spawnInterval = 2100; timer = LK.setInterval(function () { var zombie = new Zombie(hero); zombie.spawn(); zombies.push(zombie); game.addChild(zombie); spawnInterval = Math.max(500, spawnInterval - 10); LK.clearInterval(timer); timer = LK.setInterval(arguments.callee, spawnInterval); }, spawnInterval); function isGameOver() { return hero.healthBar.currentHealth <= 0; }