/**** * Classes ****/ var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.direction = { x: 0, y: 0 }; self.speed = 10 * snowballSpeed; self.width *= 0.5 * snowballSize; self.height *= 0.5 * snowballSize; self._move_migrated = function () { self.x += self.direction.x * self.speed; self.y += self.direction.y * self.speed; }; }); var FloorTile = Container.expand(function () { var self = Container.call(this); var floorTileGraphics = self.attachAsset('floorTile', { anchorX: 0.5, anchorY: 0.5 }); }); var IceBlock = Container.expand(function () { var self = Container.call(this); var iceBlockGraphics = self.attachAsset('iceBlock', { anchorX: 0.5, anchorY: 0.5 }); }); var Player = Container.expand(function () { var self = Container.call(this); var playerGraphics = self.attachAsset('player', { anchorX: 0.5, anchorY: 0.5 }); self.velocity = { x: 0, y: 0 }; self.speed = 15; self.shoot = function () { for (var i = 0; i < 16; i++) { var bullet = new Bullet(); bullet.x = self.x; bullet.y = self.y; var angle = Math.PI * 2 / 16 * i; bullet.direction.x = Math.cos(angle); bullet.direction.y = Math.sin(angle); bullets.push(bullet); self.addChild(bullet); } }; self.moveTowards = function (pos) { var dx = pos.x - self.x; var dy = pos.y - self.y; var magnitude = Math.sqrt(dx * dx + dy * dy); self.velocity.x += dx * self.speed / magnitude; self.velocity.y += dy * self.speed / magnitude; }; self.moveAwayFrom = function (pos) { var dx = pos.x - self.x; var dy = pos.y - self.y; var magnitude = Math.sqrt(dx * dx + dy * dy); self.velocity.x -= dx * self.speed / magnitude; self.velocity.y -= dy * self.speed / magnitude; }; self._move_migrated = function () { self.x += self.velocity.x; self.y += self.velocity.y; self.velocity.x *= 0.95; self.velocity.y *= 0.95; }; }); var Powerup = Container.expand(function () { var self = Container.call(this); var powerupGraphics = self.attachAsset('arrowDown', { anchorX: 0.5, anchorY: 0.5 }); self.width *= 2; self.height *= 2; self.timer = 0; self.blinking = false; self._update_migrated = function () { self.timer += 1; if (self.timer > 240) { self.blinking = true; } if (self.blinking) { powerupGraphics.alpha = 0.5 + 0.5 * Math.sin(self.timer / 10); } }; }); var SnowManEnemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('arrowUp', { anchorX: 0.5, anchorY: 0.5 }); self.width *= 2; self.height *= 2; self.speed = 2 + Math.random() * 0.5; self._move_migrated = function (player) { var dx = player.x - self.x; var dy = player.y - self.y; var magnitude = Math.sqrt(dx * dx + dy * dy); self.x += dx * self.speed / magnitude; self.y += dy * self.speed / magnitude; }; }); var Snowflake = Container.expand(function () { var self = Container.call(this); var snowflakeGraphics = self.attachAsset('snowflake', { anchorX: 0.5, anchorY: 0.5 }); snowflakeGraphics.width = 10; snowflakeGraphics.height = 10; self.speed = Math.random() * 4 + 2; self._move_migrated = function () { self.y += self.speed; self.x += Math.sin(self.y / 100) * 5; if (self.y > 2800) { self.y = -10; } }; }); var Upgrade = Container.expand(function () { var self = Container.call(this); var upgradeGraphics = self.attachAsset('upgrade', { anchorX: 0.5, anchorY: 0.5 }); }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ var iceBlocks = []; var blockSize = 200; var worldWidth = blockSize * 11; var worldHeight = blockSize * 15; //console.log('Game world size:', worldWidth, 'x', worldHeight); //console.log('game.height:', game.height); for (var i = 0; i < worldWidth / blockSize; i++) { for (var j = 0; j < worldHeight / blockSize; j++) { if (i === 0 || i === worldWidth / blockSize - 1 || j === 0 || j === worldHeight / blockSize - 1) { var iceBlock = new IceBlock(); iceBlock.x = i * blockSize; iceBlock.y = j * blockSize; game.addChild(iceBlock); } else { if (true) { var floorTile = new FloorTile(); floorTile.x = i * blockSize; floorTile.y = j * blockSize; game.addChild(floorTile); } } } } var player = game.addChild(new Player()); var scoreLabel = new Text2('Score: 0', { size: 80, fill: '#113355', align: 'left' }); scoreLabel.x = worldWidth - 560; scoreLabel.y = 160; scoreLabel.anchor.set(0.5, 0.5); game.addChild(scoreLabel); var playerScore = 0; var instructions = new Text2('Tap to move and throw\nsnowballs at the evil snowmen', { size: 100, fill: '#446688', align: 'center', dropShadow: true }); instructions.x = worldWidth / 2 - 100; instructions.y = worldHeight / 2 + 340; instructions.anchor.set(0.5, 0.5); game.addChild(instructions); var playButton = game.attachAsset('playButton', { anchorX: 0.5, anchorY: 0.5 }); playButton.x = worldWidth / 2 - 100; playButton.y = worldHeight / 2; playButton.width = 400; playButton.height = 400; /* playButton.on('down', function () { instructions.visible = false; playButton.visible = false; LK.emit('playButtonPressed'); });*/ var bullets = []; var enemies = []; var powerups = []; var upgrades = []; var upgradeLevel = 0; var maxUpgradeLevel = 6; var numSnowballs = 1; var numBullets = 1; // Define numBullets variable var snowballSpeed = 1; var snowballFrequency = 2000; var snowballSize = 1; var upgradeMessages = ['+Extra Snowball', '+Snowball Speed', '+Snowball Frequency', '+Extra Snowball', '+Snowball Size', '+Extra Snowball']; var enemySpawnInterval; var bulletInterval; var updateSpawnSpeedInterval; var initialSpawnSpeed = 2000; var spawnSpeedNow = initialSpawnSpeed; var powerupSpawnInterval; var upgradeSpawnInterval; spawnPowerup = function spawnPowerup() { var powerup = new Powerup(); do { var xx = Math.random() * worldWidth; var yy = Math.random() * worldHeight; var dx = xx - player.x; var dy = yy - player.y; var magnitude = Math.sqrt(dx * dx + dy * dy); } while (magnitude < 800); powerup.x = xx; powerup.y = yy; powerups.push(powerup); game.addChild(powerup); }; spawnEnemy = function spawnEnemy() { var snowManEnemy = new SnowManEnemy(); if (Math.random() < 0.5) { var yy = Math.random() * worldHeight; if (Math.random() < 0.5) { var xx = -snowManEnemy.width; } else { var xx = worldWidth + snowManEnemy.width; } } else { var xx = Math.random() * worldHeight; if (Math.random() < 0.5) { var yy = -snowManEnemy.height; } else { var yy = worldHeight + snowManEnemy.height; } } snowManEnemy.x = xx; snowManEnemy.y = yy; enemies.push(snowManEnemy); game.addChild(snowManEnemy); }; spawnUpgrade = function spawnUpgrade() { var upgrade = new Upgrade(); do { var xx = 200 + Math.random() * (worldWidth - 400); var yy = 200 + Math.random() * (worldHeight - 400); var dx = xx - player.x; var dy = yy - player.y; var magnitude = Math.sqrt(dx * dx + dy * dy); } while (magnitude < 800); upgrade.x = xx; upgrade.y = yy; upgrades.push(upgrade); game.addChild(upgrade); }; setBulletInterval = function setBulletInterval(time) { LK.clearInterval(bulletInterval); bulletInterval = LK.setInterval(function () { for (var i = 0; i < numSnowballs; i++) { var bullet = new Bullet(); bullet.x = player.x; bullet.y = player.y; var pos = { x: 0, y: 0 }; pos = lastTapPos; var dx = pos.x - player.x + i * 40; var dy = pos.y - player.y + i * 40; var magnitude = Math.sqrt(dx * dx + dy * dy); bullet.direction.x = dx / magnitude; bullet.direction.y = dy / magnitude; bullets.push(bullet); game.addChild(bullet); } }, time); }; intersectsTolerance = function intersectsTolerance(a, b, tolerance) { tolerance *= tolerance; if (!a || !b) { return false; } var dx = a.x - b.x; if (dx * dx < tolerance) { var dy = a.y - b.y; if (dy * dy < tolerance) { return true; } } return false; }; triggerUpgrade = function triggerUpgrade(x, y) { showSign(upgradeMessages[upgradeLevel], x, y); upgradeLevel++; if (upgradeLevel == 1 || upgradeLevel == 4 || upgradeLevel == 6) { numSnowballs++; } else if (upgradeLevel == 2) { snowballSpeed *= 1.5; } else if (upgradeLevel == 3) { snowballFrequency *= 0.5; setBulletInterval(snowballFrequency); } else { snowballSize *= 1.5; } }; showSign = function showSign(message, x, y) { var signText = new Text2(message, { size: 80, fill: '#ffcc00', align: 'center', dropShadow: true }); // Ensure the message is fully on screen signText.x = Math.max(signText.width / 2, Math.min(worldWidth - signText.width / 2, x)); signText.y = Math.max(signText.height / 2, Math.min(worldHeight - signText.height / 2, y)); signText.anchor.set(0.5, 0.5); game.addChild(signText); // Play upgrade sound effect var upgradeSound = LK.getSound('upgradeSound'); upgradeSound.play(); // Remove the sign after a brief period LK.setTimeout(function () { signText.destroy(); }, 2000); }; triggerBomb = function triggerBomb() { for (var i = 0; i < 16; i++) { var bullet = new Bullet(); bullet.x = player.x; bullet.y = player.y; var angle = Math.PI * 2 / 16 * i; bullet.direction.x = Math.cos(angle); bullet.direction.y = Math.sin(angle); bullets.push(bullet); game.addChild(bullet); } }; var gameStarted = false; LK.on('playButtonPressed', function () { gameStarted = true; updateSpawnSpeedInterval = LK.setInterval(function () { if (spawnSpeedNow > 200) { spawnSpeedNow -= 100; LK.clearInterval(enemySpawnInterval); enemySpawnInterval = LK.setInterval(function () { spawnEnemy(); }, spawnSpeedNow); } }, 10000); upgradeSpawnInterval = LK.setInterval(function () { if (upgradeLevel < 6) { spawnUpgrade(); } }, 15000); enemySpawnInterval = LK.setInterval(function () { spawnEnemy(); }, initialSpawnSpeed); setBulletInterval(snowballFrequency); powerupSpawnInterval = LK.setInterval(function () { spawnPowerup(); }, 12000); }); var snowflakes = []; for (var i = 0; i < 30; i++) { var snowflake = new Snowflake(); snowflake.x = Math.random() * 1800; snowflake.y = Math.random() * game.height; snowflakes.push(snowflake); game.addChild(snowflake); } player.x = 330; player.y = 300; LK.on('tick', function () { player._move_migrated(); for (var i = 0; i < bullets.length; i++) { bullets[i]._move_migrated(); if (bullets[i].x < 0 || bullets[i].x > worldWidth || bullets[i].y < 0 || bullets[i].y > worldHeight) { bullets[i].destroy(); bullets.splice(i, 1); continue; } for (var j = 0; j < enemies.length; j++) { //if (bullets[i].intersects(enemies[j])) { if (intersectsTolerance(bullets[i], enemies[j], 100)) { enemies[j].destroy(); playerScore += 100; scoreLabel.setText("Score: " + playerScore); enemies.splice(j, 1); break; } } } for (var i = 0; i < enemies.length; i++) { enemies[i]._move_migrated(player); //if (player.intersects(enemies[i])) { if (intersectsTolerance(player, enemies[i], 100)) { LK.setScore(playerScore); LK.showGameOver(); } } for (var i = 0; i < snowflakes.length; i++) { snowflakes[i]._move_migrated(); } for (var i = 0; i < powerups.length; i++) { powerups[i]._update_migrated(); if (powerups[i].timer > 480) { powerups[i].destroy(); powerups.splice(i, 1); } else { if (player.intersects(powerups[i])) { triggerBomb(); // Play powerup sound effect var powerupSound = LK.getSound('powerupSound'); powerupSound.play(); powerups[i].destroy(); powerups.splice(i, 1); } } } for (var i = 0; i < upgrades.length; i++) { if (player.intersects(upgrades[i])) { //triggerBomb(); triggerUpgrade(upgrades[i].x, upgrades[i].y); upgrades[i].destroy(); upgrades.splice(i, 1); } } if (LK.ticks % 15 == 0) { console.log('enemies length: ' + enemies.length); console.log('bullets length: ' + bullets.length); console.log('powerups length: ' + powerups.length); console.log('upgrades length: ' + upgrades.length); } }); var lastTapPos = { x: 0, y: 0 }; game.on('down', function (x, y, obj) { if (!gameStarted) { instructions.visible = false; playButton.visible = false; LK.emit('playButtonPressed'); } else { var pos = game.toLocal(obj.global); lastTapPos = pos; player.moveTowards(pos); } });