/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1", { highScore: 0 }); /**** * Classes ****/ var ArenaWall = Container.expand(function () { var self = Container.call(this); self.wallGraphics = []; self.createWalls = function (centerX, centerY, size) { // Clear existing walls for (var i = 0; i < self.wallGraphics.length; i++) { self.removeChild(self.wallGraphics[i]); } self.wallGraphics = []; // Calculate positions var halfSize = size / 2; var wallSize = 30; var numWalls = Math.floor(size / wallSize); // Top and bottom walls for (var x = 0; x < numWalls; x++) { var topWall = self.attachAsset('arenaWall', { anchorX: 0.5, anchorY: 0.5, x: centerX - halfSize + (x + 0.5) * wallSize, y: centerY - halfSize }); self.wallGraphics.push(topWall); var bottomWall = self.attachAsset('arenaWall', { anchorX: 0.5, anchorY: 0.5, x: centerX - halfSize + (x + 0.5) * wallSize, y: centerY + halfSize }); self.wallGraphics.push(bottomWall); } // Left and right walls (skip corners) for (var y = 1; y < numWalls - 1; y++) { var leftWall = self.attachAsset('arenaWall', { anchorX: 0.5, anchorY: 0.5, x: centerX - halfSize, y: centerY - halfSize + (y + 0.5) * wallSize }); self.wallGraphics.push(leftWall); var rightWall = self.attachAsset('arenaWall', { anchorX: 0.5, anchorY: 0.5, x: centerX + halfSize, y: centerY - halfSize + (y + 0.5) * wallSize }); self.wallGraphics.push(rightWall); } }; return self; }); var Brawler = Container.expand(function () { var self = Container.call(this); // Character graphic var graphic = self.attachAsset('brawler', { anchorX: 0.5, anchorY: 0.5 }); // Health bar background var healthBarBg = self.attachAsset('healthBarBg', { anchorX: 0.5, anchorY: 0.5, y: -60 }); // Health bar var healthBar = self.attachAsset('healthBar', { anchorX: 0, anchorY: 0.5, y: -60, x: -40 }); // Properties self.maxHealth = 100; self.health = self.maxHealth; self.attackCooldown = 0; self.attackCooldownMax = 20; self.speed = 5; self.isDragging = false; self.direction = { x: 0, y: 0 }; self.isPlayer = false; self.isEnemy = false; self.attackDamage = 20; self.lastPosition = { x: 0, y: 0 }; self.isDead = false; // Movement AI for enemies self.moveTowards = function (target, speed) { if (!target || self.isDead) { return; } var dx = target.x - self.x; var dy = target.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { self.direction.x = dx / distance; self.direction.y = dy / distance; self.x += self.direction.x * speed; self.y += self.direction.y * speed; } }; // Attack method self.attack = function () { if (self.attackCooldown > 0 || self.isDead) { return; } var projectile = new Projectile(); projectile.x = self.x; projectile.y = self.y; projectile.direction = { x: self.direction.x || 1, y: self.direction.y || 0 }; projectile.owner = self; game.addChild(projectile); gameState.projectiles.push(projectile); self.attackCooldown = self.attackCooldownMax; LK.getSound('shoot').play(); }; // Take damage method self.takeDamage = function (amount) { if (self.isDead) { return; } self.health -= amount; // Update health bar healthBar.width = self.health / self.maxHealth * 80; // Flash the character red LK.effects.flashObject(graphic, 0xff0000, 200); LK.getSound('hit').play(); if (self.health <= 0) { self.die(); } }; // Die method self.die = function () { if (self.isDead) { return; } self.isDead = true; tween(self, { alpha: 0 }, { duration: 500, onFinish: function onFinish() { self.markForRemoval = true; } }); if (self.isPlayer) { LK.showGameOver(); } else if (self.isEnemy) { gameState.score += 100; gameState.defeatedEnemies++; scoreTxt.setText("Score: " + gameState.score); if (gameState.defeatedEnemies >= gameState.totalEnemies) { LK.showYouWin(); } } }; // Event handlers self.down = function (x, y, obj) { if (self.isPlayer && !self.isDead) { self.isDragging = true; } }; self.up = function (x, y, obj) { if (self.isPlayer) { self.isDragging = false; } }; self.update = function () { // Store last position self.lastPosition.x = self.x; self.lastPosition.y = self.y; // Update cooldowns if (self.attackCooldown > 0) { self.attackCooldown--; } // Keep within arena bounds var arenaSize = gameState.arenaSize; var halfSize = arenaSize / 2; if (self.x < gameState.arenaCenter.x - halfSize + 50) { self.x = gameState.arenaCenter.x - halfSize + 50; } if (self.x > gameState.arenaCenter.x + halfSize - 50) { self.x = gameState.arenaCenter.x + halfSize - 50; } if (self.y < gameState.arenaCenter.y - halfSize + 50) { self.y = gameState.arenaCenter.y - halfSize + 50; } if (self.y > gameState.arenaCenter.y + halfSize - 50) { self.y = gameState.arenaCenter.y + halfSize - 50; } }; return self; }); var Enemy = Brawler.expand(function () { var self = Brawler.call(this); // Override the default brawler graphic with enemy graphic var graphic = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.isEnemy = true; self.targetUpdateCooldown = 0; self.currentTarget = null; // Override the update method var parentUpdate = self.update; self.update = function () { if (self.isDead) { return; } // Base update from parent parentUpdate(); // Update target every so often if (self.targetUpdateCooldown <= 0) { self.findNewTarget(); self.targetUpdateCooldown = 60; // Update target every 60 frames } else { self.targetUpdateCooldown--; } // Move towards target if (self.currentTarget && !self.currentTarget.isDead) { self.moveTowards(self.currentTarget, self.speed); // Attack if close enough var dx = self.currentTarget.x - self.x; var dy = self.currentTarget.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance < 300) { // Set direction for projectile self.direction.x = dx / distance; self.direction.y = dy / distance; // Attack with some randomness if (Math.random() < 0.03) { self.attack(); } } } else { // If no target or target is dead, wander randomly if (Math.random() < 0.02) { self.direction.x = Math.random() * 2 - 1; self.direction.y = Math.random() * 2 - 1; var mag = Math.sqrt(self.direction.x * self.direction.x + self.direction.y * self.direction.y); self.direction.x /= mag; self.direction.y /= mag; } self.x += self.direction.x * self.speed / 2; self.y += self.direction.y * self.speed / 2; } }; self.findNewTarget = function () { // Target the player if (gameState.player && !gameState.player.isDead) { self.currentTarget = gameState.player; return; } // No valid targets self.currentTarget = null; }; return self; }); var PowerUp = Container.expand(function () { var self = Container.call(this); var graphic = self.attachAsset('powerUp', { anchorX: 0.5, anchorY: 0.5 }); self.type = 'health'; // health, damage, speed self.value = 20; // Visual effect - floating animation self.floatAnim = function () { tween(graphic, { y: -5 }, { duration: 1000, easing: tween.sinceOut, onFinish: function onFinish() { tween(graphic, { y: 5 }, { duration: 1000, easing: tween.sinceOut, onFinish: self.floatAnim }); } }); }; self.floatAnim(); return self; }); var Projectile = Container.expand(function () { var self = Container.call(this); var graphic = self.attachAsset('projectile', { anchorX: 0.5, anchorY: 0.5 }); self.direction = { x: 0, y: 0 }; self.speed = 12; self.damage = 10; self.lifetime = 60; // frames the projectile lives for self.owner = null; self.update = function () { self.x += self.direction.x * self.speed; self.y += self.direction.y * self.speed; self.lifetime--; if (self.lifetime <= 0) { self.markForRemoval = true; } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Game state tracking var gameState = { arenaCenter: { x: 2048 / 2, y: 2732 / 2 }, arenaSize: 1800, minArenaSize: 1000, arenaShrinkRate: 0.2, arenaShrinkStart: 1000, // ticks before arena starts shrinking arenaShrinkTimer: 0, projectiles: [], powerUps: [], enemies: [], player: null, score: 0, level: 1, defeatedEnemies: 0, totalEnemies: 5, gameStarted: false }; // Create arena background var arenaBackground = LK.getAsset('arena', { anchorX: 0.5, anchorY: 0.5, x: gameState.arenaCenter.x, y: gameState.arenaCenter.y, width: gameState.arenaSize, height: gameState.arenaSize, alpha: 0.3 }); game.addChild(arenaBackground); // Create arena walls var arenaWalls = new ArenaWall(); game.addChild(arenaWalls); arenaWalls.createWalls(gameState.arenaCenter.x, gameState.arenaCenter.y, gameState.arenaSize); // Create player var player = new Brawler(); player.x = gameState.arenaCenter.x; player.y = gameState.arenaCenter.y + 300; player.isPlayer = true; game.addChild(player); gameState.player = player; // Setup GUI elements var scoreTxt = new Text2("Score: 0", { size: 50, fill: 0xFFFFFF }); scoreTxt.anchor.set(0, 0); LK.gui.topRight.addChild(scoreTxt); scoreTxt.x = -250; scoreTxt.y = 50; var levelTxt = new Text2("Level: 1", { size: 50, fill: 0xFFFFFF }); levelTxt.anchor.set(0, 0); LK.gui.topRight.addChild(levelTxt); levelTxt.x = -250; levelTxt.y = 120; var arenaSizeTxt = new Text2("Arena Shrinking", { size: 40, fill: 0xFF9900 }); arenaSizeTxt.anchor.set(0.5, 0); arenaSizeTxt.alpha = 0; LK.gui.top.addChild(arenaSizeTxt); arenaSizeTxt.y = 50; // Initialize enemies function spawnEnemies() { // Clear existing enemies for (var i = gameState.enemies.length - 1; i >= 0; i--) { game.removeChild(gameState.enemies[i]); gameState.enemies.splice(i, 1); } // Set number of enemies based on level gameState.totalEnemies = 3 + gameState.level * 2; gameState.defeatedEnemies = 0; // Spawn new enemies for (var i = 0; i < gameState.totalEnemies; i++) { var enemy = new Enemy(); // Position around the arena var angle = i / gameState.totalEnemies * Math.PI * 2; var radius = gameState.arenaSize / 2 - 200; enemy.x = gameState.arenaCenter.x + Math.cos(angle) * radius; enemy.y = gameState.arenaCenter.y + Math.sin(angle) * radius; // Scale difficulty with level enemy.maxHealth = 80 + gameState.level * 20; enemy.health = enemy.maxHealth; enemy.speed = 3 + gameState.level * 0.5; game.addChild(enemy); gameState.enemies.push(enemy); } } // Spawn power-ups periodically function spawnPowerUp() { if (gameState.powerUps.length >= 5) { return; } // Limit number of power-ups var powerUp = new PowerUp(); // Random position within arena var halfSize = gameState.arenaSize / 2 - 100; powerUp.x = gameState.arenaCenter.x + Math.random() * halfSize * 2 - halfSize; powerUp.y = gameState.arenaCenter.y + Math.random() * halfSize * 2 - halfSize; // Random type var typeRoll = Math.random(); if (typeRoll < 0.4) { powerUp.type = 'health'; powerUp.tint = 0x00ff00; } else if (typeRoll < 0.7) { powerUp.type = 'damage'; powerUp.tint = 0xff0000; powerUp.value = 10; } else { powerUp.type = 'speed'; powerUp.tint = 0x0088ff; powerUp.value = 1; } game.addChild(powerUp); gameState.powerUps.push(powerUp); } // Game start function startGame() { // Reset game state gameState.score = 0; gameState.level = 1; gameState.arenaSize = 1800; gameState.arenaShrinkTimer = gameState.arenaShrinkStart; // Reset arena arenaBackground.width = gameState.arenaSize; arenaBackground.height = gameState.arenaSize; arenaWalls.createWalls(gameState.arenaCenter.x, gameState.arenaCenter.y, gameState.arenaSize); // Reset player player.health = player.maxHealth; player.isDead = false; player.alpha = 1; player.speed = 5; player.attackDamage = 20; // Spawn enemies spawnEnemies(); // Update UI scoreTxt.setText("Score: " + gameState.score); levelTxt.setText("Level: " + gameState.level); // Play music LK.playMusic('battleMusic'); gameState.gameStarted = true; } // Handle touch/mouse events var dragTarget = null; function handleMove(x, y, obj) { if (dragTarget && dragTarget.isDragging) { // Update player position dragTarget.x = x; dragTarget.y = y; // Calculate direction based on movement var dx = x - dragTarget.lastPosition.x; var dy = y - dragTarget.lastPosition.y; var dist = Math.sqrt(dx * dx + dy * dy); if (dist > 0.1) { dragTarget.direction.x = dx / dist; dragTarget.direction.y = dy / dist; } } } game.down = function (x, y, obj) { if (!gameState.gameStarted) { startGame(); return; } dragTarget = player; if (!player.isDead) { player.isDragging = true; handleMove(x, y, obj); } }; game.up = function (x, y, obj) { if (dragTarget) { dragTarget.isDragging = false; dragTarget = null; } }; game.move = handleMove; // Main game update loop game.update = function () { if (!gameState.gameStarted) { return; } // Shrink arena over time if (gameState.arenaShrinkTimer > 0) { gameState.arenaShrinkTimer--; if (gameState.arenaShrinkTimer === 300) { // Show warning message tween(arenaSizeTxt, { alpha: 1 }, { duration: 300, onFinish: function onFinish() { tween(arenaSizeTxt, { alpha: 0 }, { duration: 300 }); } }); } } else { if (gameState.arenaSize > gameState.minArenaSize) { gameState.arenaSize -= gameState.arenaShrinkRate; // Update arena visuals arenaBackground.width = gameState.arenaSize; arenaBackground.height = gameState.arenaSize; arenaWalls.createWalls(gameState.arenaCenter.x, gameState.arenaCenter.y, gameState.arenaSize); } } // Spawn power-ups randomly if (Math.random() < 0.005) { spawnPowerUp(); } // Player attack on tap/click/drag release if (player.isDragging === false && dragTarget === null && !player.isDead) { player.attack(); } // Update projectiles and check collisions for (var i = gameState.projectiles.length - 1; i >= 0; i--) { var projectile = gameState.projectiles[i]; // Check if projectile is marked for removal if (projectile.markForRemoval) { game.removeChild(projectile); gameState.projectiles.splice(i, 1); continue; } // Check projectile collisions with enemies if (projectile.owner === player) { for (var j = 0; j < gameState.enemies.length; j++) { var enemy = gameState.enemies[j]; if (!enemy.isDead && projectile.intersects(enemy)) { enemy.takeDamage(player.attackDamage); projectile.markForRemoval = true; break; } } } // Check projectile collisions with player else if (projectile.owner.isEnemy && !player.isDead && projectile.intersects(player)) { player.takeDamage(projectile.owner.attackDamage); projectile.markForRemoval = true; } // Check if projectile is out of arena bounds var halfSize = gameState.arenaSize / 2; if (projectile.x < gameState.arenaCenter.x - halfSize || projectile.x > gameState.arenaCenter.x + halfSize || projectile.y < gameState.arenaCenter.y - halfSize || projectile.y > gameState.arenaCenter.y + halfSize) { projectile.markForRemoval = true; } } // Check power-up collisions with player for (var i = gameState.powerUps.length - 1; i >= 0; i--) { var powerUp = gameState.powerUps[i]; if (!player.isDead && powerUp.intersects(player)) { // Apply power-up effect if (powerUp.type === 'health') { player.health = Math.min(player.maxHealth, player.health + powerUp.value); // Update health bar var healthBar = player.getChildAt(2); // Health bar is at index 2 healthBar.width = player.health / player.maxHealth * 80; } else if (powerUp.type === 'damage') { player.attackDamage += powerUp.value; } else if (powerUp.type === 'speed') { player.speed += powerUp.value; } // Remove power-up game.removeChild(powerUp); gameState.powerUps.splice(i, 1); // Play sound and add score LK.getSound('powerup').play(); gameState.score += 50; scoreTxt.setText("Score: " + gameState.score); } // Remove power-ups outside arena bounds var halfSize = gameState.arenaSize / 2; if (powerUp.x < gameState.arenaCenter.x - halfSize || powerUp.x > gameState.arenaCenter.x + halfSize || powerUp.y < gameState.arenaCenter.y - halfSize || powerUp.y > gameState.arenaCenter.y + halfSize) { game.removeChild(powerUp); gameState.powerUps.splice(i, 1); } } // Check for level completion if (gameState.defeatedEnemies >= gameState.totalEnemies) { // Level up gameState.level++; levelTxt.setText("Level: " + gameState.level); // Reset arena gameState.arenaSize = 1800; gameState.arenaShrinkTimer = gameState.arenaShrinkStart; arenaBackground.width = gameState.arenaSize; arenaBackground.height = gameState.arenaSize; arenaWalls.createWalls(gameState.arenaCenter.x, gameState.arenaCenter.y, gameState.arenaSize); // Spawn new enemies spawnEnemies(); // Bonus score for completing level gameState.score += 500; scoreTxt.setText("Score: " + gameState.score); // Clear old power-ups for (var i = gameState.powerUps.length - 1; i >= 0; i--) { game.removeChild(gameState.powerUps[i]); gameState.powerUps.splice(i, 1); } } // Check for game over (player dead) if (player.isDead) { // Update high score if (gameState.score > storage.highScore) { storage.highScore = gameState.score; } } // Clean up dead enemies for (var i = gameState.enemies.length - 1; i >= 0; i--) { if (gameState.enemies[i].markForRemoval) { game.removeChild(gameState.enemies[i]); gameState.enemies.splice(i, 1); } } }; // Start music LK.playMusic('battleMusic', { fade: { start: 0, end: 0.3, duration: 1000 } }); // Initial instruction text var instructionText = new Text2("Tap to start!\nDrag to move, release to shoot", { size: 60, fill: 0xFFFFFF }); instructionText.anchor.set(0.5, 0.5); instructionText.x = gameState.arenaCenter.x; instructionText.y = gameState.arenaCenter.y - 200; game.addChild(instructionText); // Hide instructions when game starts var originalUpdate = game.update; game.update = function () { if (!gameState.gameStarted) { // Make text pulse before game starts instructionText.alpha = 0.5 + Math.sin(LK.ticks / 20) * 0.5; return; } // Remove instruction text once when game starts if (instructionText.parent) { game.removeChild(instructionText); } // Call the original update originalUpdate.call(game); };