/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Acid Bubble (obstacle) var AcidBubble = Container.expand(function () { var self = Container.call(this); var bubble = self.attachAsset('acidBubble', { anchorX: 0.5, anchorY: 0.5 }); self.radius = bubble.width / 2; self.vx = (Math.random() - 0.5) * 6; self.vy = (Math.random() - 0.5) * 6; self.update = function () { self.x += self.vx; self.y += self.vy; // Bounce off belly walls if (self.x < snakeBelly.x - snakeBelly.width / 2 + self.radius) { self.x = snakeBelly.x - snakeBelly.width / 2 + self.radius; self.vx *= -1; } if (self.x > snakeBelly.x + snakeBelly.width / 2 - self.radius) { self.x = snakeBelly.x + snakeBelly.width / 2 - self.radius; self.vx *= -1; } if (self.y < snakeBelly.y - snakeBelly.height / 2 + self.radius) { self.y = snakeBelly.y - snakeBelly.height / 2 + self.radius; self.vy *= -1; } if (self.y > snakeBelly.y + snakeBelly.height / 2 - self.radius) { self.y = snakeBelly.y + snakeBelly.height / 2 - self.radius; self.vy *= -1; } }; return self; }); // Animal class var Animal = Container.expand(function () { var self = Container.call(this); // Defensive: set a default assetId if not set if (!self.assetId) self.assetId = 'pig'; // Asset id is passed in as self.assetId var animalSprite = self.attachAsset(self.assetId, { anchorX: 0.5, anchorY: 0.5 }); self.radius = animalSprite.width / 2; // Used for movement self.vx = 0; self.vy = 0; self.isSelected = false; // Called every tick self.update = function () { // Gravity inside snake self.vy += 0.5; self.x += self.vx; self.y += self.vy; // Friction self.vx *= 0.95; self.vy *= 0.95; // Keep inside belly bounds if (self.x < snakeBelly.x - snakeBelly.width / 2 + self.radius) { self.x = snakeBelly.x - snakeBelly.width / 2 + self.radius; self.vx *= -0.5; } if (self.x > snakeBelly.x + snakeBelly.width / 2 - self.radius) { self.x = snakeBelly.x + snakeBelly.width / 2 - self.radius; self.vx *= -0.5; } if (self.y < snakeBelly.y - snakeBelly.height / 2 + self.radius) { self.y = snakeBelly.y - snakeBelly.height / 2 + self.radius; self.vy *= -0.5; } if (self.y > snakeBelly.y + snakeBelly.height / 2 - self.radius) { self.y = snakeBelly.y + snakeBelly.height / 2 - self.radius; self.vy *= -0.5; } }; // Touch down on animal self.down = function (x, y, obj) { self.isSelected = true; selectedAnimal = self; dragOffsetX = self.x - x; dragOffsetY = self.y - y; }; // Touch up self.up = function (x, y, obj) { self.isSelected = false; selectedAnimal = null; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Sound for animal jump // Exit (esophagus opening) // Obstacle (stomach acid bubble) // Snake exterior (for outside interaction) // Snake belly (background) // Animal shapes (simple colored ellipses for each animal) // --- Global variables --- var animalIds = ['pig', 'cat', 'bee', 'frog', 'polarBear', 'elephant', 'bird', 'snail', 'axolotl', 'pinkFox', 'boyBat', 'wolf', 'chinchilla', 'moth', 'goat', 'bunny', 'bear', 'deer']; var animals = []; var acidBubbles = []; var selectedAnimal = null; var dragOffsetX = 0; var dragOffsetY = 0; var insideMode = true; // true: inside snake, false: outside var snakeBelly, snakeSkin, exitNode; var scoreTxt; var rescuedCount = 0; var totalToRescue = 5; // MVP: rescue 5 animals to win // --- Setup snake belly (inside) --- snakeBelly = LK.getAsset('snakeBelly', { anchorX: 0.5, anchorY: 0.5, x: 2048 / 2, y: 1200 }); game.addChild(snakeBelly); // --- Setup exit (esophagus opening) --- exitNode = LK.getAsset('exit', { anchorX: 0.5, anchorY: 0.5, x: 2048 / 2, y: 800 }); game.addChild(exitNode); // --- Setup animals --- function spawnAnimals() { animals = []; var startX = 2048 / 2 - 400; var startY = 1200; for (var i = 0; i < totalToRescue; i++) { var id = animalIds[i]; var animal = new Animal(); animal.assetId = id; animal.x = startX + i * 200; animal.y = startY + Math.random() * 100 - 50; animal.vx = (Math.random() - 0.5) * 6; animal.vy = (Math.random() - 0.5) * 6; animals.push(animal); game.addChild(animal); } } spawnAnimals(); // --- Setup acid bubbles (obstacles) --- function spawnAcidBubbles() { acidBubbles = []; for (var i = 0; i < 3; i++) { var bubble = new AcidBubble(); bubble.x = 2048 / 2 + (Math.random() - 0.5) * 600; bubble.y = 1200 + (Math.random() - 0.5) * 300; acidBubbles.push(bubble); game.addChild(bubble); } } spawnAcidBubbles(); // --- Setup score text --- scoreTxt = new Text2('0', { size: 120, fill: "#fff" }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); // --- Setup snake skin (outside) --- snakeSkin = LK.getAsset('snakeSkin', { anchorX: 0.5, anchorY: 0, x: 2048 / 2, y: 0 }); // Not added yet; only shown in outside mode // --- Helper: reset game state --- function resetGame() { // Remove all animals and bubbles for (var i = 0; i < animals.length; i++) animals[i].destroy(); for (var i = 0; i < acidBubbles.length; i++) acidBubbles[i].destroy(); animals = []; acidBubbles = []; rescuedCount = 0; scoreTxt.setText('0'); insideMode = true; if (snakeSkin.parent) snakeSkin.parent.removeChild(snakeSkin); if (!snakeBelly.parent) game.addChild(snakeBelly); if (!exitNode.parent) game.addChild(exitNode); spawnAnimals(); spawnAcidBubbles(); } // --- Touch/drag logic --- game.move = function (x, y, obj) { if (!insideMode) return; if (selectedAnimal) { // Move animal with finger selectedAnimal.x = x + dragOffsetX; selectedAnimal.y = y + dragOffsetY; } }; game.down = function (x, y, obj) { if (!insideMode) return; // Check if any animal is touched for (var i = 0; i < animals.length; i++) { var a = animals[i]; var dx = x - a.x; var dy = y - a.y; if (dx * dx + dy * dy < a.radius * a.radius) { a.down(x, y, obj); return; } } }; game.up = function (x, y, obj) { if (!insideMode) return; if (selectedAnimal) { // Give a jump impulse upwards selectedAnimal.vy = -18; selectedAnimal.vx = (Math.random() - 0.5) * 8; LK.getSound('jump').play(); selectedAnimal.up(x, y, obj); } }; // --- Outside mode: tap snake skin to help animals escape --- snakeSkin.down = function (x, y, obj) { if (!insideMode) { // "Massage" the snake: all animals get a little upward boost for (var i = 0; i < animals.length; i++) { animals[i].vy -= 10 + Math.random() * 6; } // Animate snake skin tween(snakeSkin, { y: 20 }, { duration: 120, easing: tween.easeOut, onFinish: function onFinish() { tween(snakeSkin, { y: 0 }, { duration: 180, easing: tween.easeIn }); } }); } }; // --- Game update loop --- game.update = function () { // Switch between inside/outside every 10 seconds if (LK.ticks % 600 === 0) { insideMode = !insideMode; if (insideMode) { // Show inside if (!snakeBelly.parent) game.addChild(snakeBelly); if (!exitNode.parent) game.addChild(exitNode); if (snakeSkin.parent) snakeSkin.parent.removeChild(snakeSkin); } else { // Show outside if (!snakeSkin.parent) game.addChild(snakeSkin); if (snakeBelly.parent) snakeBelly.parent.removeChild(snakeBelly); if (exitNode.parent) exitNode.parent.removeChild(exitNode); } } // Update animals for (var i = animals.length - 1; i >= 0; i--) { var a = animals[i]; a.update(); // If animal touches exit, rescue it! if (insideMode && a.intersects(exitNode)) { // Animate out tween(a, { y: exitNode.y - 200 }, { duration: 400, easing: tween.easeIn, onFinish: function onFinish() { a.destroy(); } }); animals.splice(i, 1); rescuedCount++; scoreTxt.setText(rescuedCount); // Win condition if (rescuedCount >= totalToRescue) { LK.showYouWin(); return; } } } // Update acid bubbles for (var i = acidBubbles.length - 1; i >= 0; i--) { var b = acidBubbles[i]; b.update(); // If any animal hits a bubble, game over for (var j = 0; j < animals.length; j++) { var a = animals[j]; var dx = a.x - b.x; var dy = a.y - b.y; var dist = a.radius + b.radius - 10; if (dx * dx + dy * dy < dist * dist) { LK.effects.flashScreen(0xff0000, 800); LK.showGameOver(); return; } } } }; // --- Reset game on game over or win --- LK.on('gameover', function () { resetGame(); }); LK.on('youwin', function () { resetGame(); }); // --- Instructions text --- var instructions = new Text2("Drag animals to help them jump to the exit!\nAvoid acid bubbles.\nSometimes tap the snake's back to help!", { size: 60, fill: "#fff" }); instructions.anchor.set(0.5, 0); LK.gui.top.addChild(instructions); instructions.y = 180; instructions.x = 2048 / 2;