/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	// Create enemy graphic
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Enemy properties
	self.health = 100;
	self.speedX = 0;
	self.speedY = 0;
	self.attackRange = 300;
	self.lastX = 0;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	// Initialize enemy with properties
	self.init = function (health, speedX, speedY) {
		self.health = health || 100;
		self.speedX = speedX || 0;
		self.speedY = speedY || 0;
	};
	// Take damage from water
	self.takeDamage = function (amount) {
		self.health -= amount;
		// Visual feedback
		LK.effects.flashObject(self, 0xFF0000, 500);
		// Play sound
		LK.getSound('enemyHit').play();
		// Check if enemy is defeated
		if (self.health <= 0) {
			return true;
		}
		return false;
	};
	// Move toward target
	self.moveToward = function (targetX, targetY, speed) {
		// Calculate direction vector
		var dirX = targetX - self.x;
		var dirY = targetY - self.y;
		// Calculate distance
		var distance = Math.sqrt(dirX * dirX + dirY * dirY);
		// Only move if not too close
		if (distance > 10) {
			// Normalize direction vector
			dirX /= distance;
			dirY /= distance;
			// Set velocity
			self.speedX = dirX * speed;
			self.speedY = dirY * speed;
		} else {
			// Stop if close enough
			self.speedX = 0;
			self.speedY = 0;
		}
	};
	// Update method called every tick
	self.update = function () {
		// Store last position
		self.lastX = self.x;
		self.lastY = self.y;
		// Move enemy
		self.x += self.speedX;
		self.y += self.speedY;
		// Keep enemy within game bounds
		if (self.x < 50) self.x = 50;
		if (self.x > 2048 - 50) self.x = 2048 - 50;
		if (self.y < 50) self.y = 50;
		if (self.y > 2732 - 50) self.y = 2732 - 50;
	};
	return self;
});
var WaterMaster = Container.expand(function () {
	var self = Container.call(this);
	// Create character graphic
	var characterGraphics = self.attachAsset('waterMaster', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Water power properties
	self.waterReserve = 100; // Maximum water reserve
	self.currentWater = 100; // Current water level
	self.waterRegenRate = 0.2; // Water regeneration rate per tick
	self.shootCost = 10; // Cost of shooting water
	self.lastShootTime = 0; // Track last shoot time for cooldown
	self.shootCooldown = 15; // Cooldown between shots in ticks
	self.isCharging = false; // Track if charging a water shot
	self.chargeAmount = 0; // Current charge amount
	self.chargeMax = 60; // Maximum charge amount
	self.lastX = 0;
	self.lastY = 0;
	// Create water shield
	self.shield = self.addChild(LK.getAsset('waterShield', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	}));
	// Event handlers for touch interactions
	self.down = function (x, y, obj) {
		self.isCharging = true;
		self.chargeAmount = 0;
	};
	self.up = function (x, y, obj) {
		if (self.isCharging && self.currentWater >= self.shootCost) {
			// Calculate direction based on charge time
			var chargeRatio = Math.min(self.chargeAmount / self.chargeMax, 1);
			var power = 5 + 10 * chargeRatio;
			// Create water projectile
			self.shootWater(power);
			// Reset charging
			self.isCharging = false;
			self.chargeAmount = 0;
		}
	};
	// Shoot water in direction
	self.shootWater = function (power) {
		if (LK.ticks - self.lastShootTime < self.shootCooldown || self.currentWater < self.shootCost) {
			return;
		}
		// Create water projectile
		if (typeof game !== 'undefined' && game.createWaterProjectile) {
			// Determine direction vector from center to touch point
			var touchX = game.lastTouchX || self.x;
			var touchY = game.lastTouchY || self.y;
			// Calculate direction vector
			var dirX = touchX - self.x;
			var dirY = touchY - self.y;
			// Normalize direction vector
			var length = Math.sqrt(dirX * dirX + dirY * dirY);
			if (length > 0) {
				dirX /= length;
				dirY /= length;
			} else {
				dirX = 0;
				dirY = -1; // Default direction up
			}
			// Create projectile
			game.createWaterProjectile(self.x, self.y, dirX * power, dirY * power);
			// Reduce water reserve
			self.currentWater -= self.shootCost;
			// Play sound
			LK.getSound('waterShoot').play();
			// Track last shoot time
			self.lastShootTime = LK.ticks;
		}
	};
	// Activate shield
	self.activateShield = function () {
		if (self.currentWater >= 20) {
			self.shield.alpha = 0.7;
			self.currentWater -= 20;
			// Auto-disable shield after 3 seconds
			LK.setTimeout(function () {
				self.shield.alpha = 0;
			}, 3000);
		}
	};
	// Refill water reserve
	self.refillWater = function (amount) {
		self.currentWater = Math.min(self.currentWater + amount, self.waterReserve);
	};
	// Update method called every tick
	self.update = function () {
		// Store last position
		self.lastX = self.x;
		self.lastY = self.y;
		// Slowly regenerate water
		if (self.currentWater < self.waterReserve) {
			self.currentWater += self.waterRegenRate;
			if (self.currentWater > self.waterReserve) {
				self.currentWater = self.waterReserve;
			}
		}
		// Update charging
		if (self.isCharging) {
			self.chargeAmount++;
			if (self.chargeAmount > self.chargeMax) {
				self.chargeAmount = self.chargeMax;
			}
		}
	};
	return self;
});
var WaterProjectile = Container.expand(function () {
	var self = Container.call(this);
	// Create projectile graphic
	var projectileGraphics = self.attachAsset('waterProjectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Projectile properties
	self.speedX = 0;
	self.speedY = 0;
	self.power = 1;
	self.lifespan = 120; // Projectile lifespan in ticks
	self.age = 0;
	self.lastX = 0;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	// Initialize projectile with direction and speed
	self.init = function (speedX, speedY, power) {
		self.speedX = speedX;
		self.speedY = speedY;
		self.power = power || 1;
		// Scale based on power
		var scale = 0.5 + self.power * 0.1;
		projectileGraphics.scale.set(scale, scale);
	};
	// Update method called every tick
	self.update = function () {
		// Store last position
		self.lastX = self.x;
		self.lastY = self.y;
		// Move projectile
		self.x += self.speedX;
		self.y += self.speedY;
		// Age the projectile
		self.age++;
		// Make projectile gradually fade out
		if (self.age > self.lifespan * 0.7) {
			var fadeRatio = 1 - (self.age - self.lifespan * 0.7) / (self.lifespan * 0.3);
			self.alpha = Math.max(fadeRatio, 0);
		}
	};
	return self;
});
var WaterSource = Container.expand(function () {
	var self = Container.call(this);
	// Create water source graphic
	var sourceGraphics = self.attachAsset('waterSource', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Water source properties
	self.refillAmount = 50;
	self.refillCooldown = 180; // 3 seconds at 60 FPS
	self.lastRefillTime = 0;
	self.lastWasIntersecting = false;
	// Pulsating animation
	function startPulsating() {
		tween(sourceGraphics.scale, {
			x: 1.1,
			y: 1.1
		}, {
			duration: 1000,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(sourceGraphics.scale, {
					x: 0.9,
					y: 0.9
				}, {
					duration: 1000,
					easing: tween.easeInOut,
					onFinish: startPulsating
				});
			}
		});
	}
	// Start pulsating animation
	startPulsating();
	// Provide water to player
	self.refillPlayerWater = function () {
		if (LK.ticks - self.lastRefillTime > self.refillCooldown) {
			self.lastRefillTime = LK.ticks;
			LK.getSound('waterRefill').play();
			return self.refillAmount;
		}
		return 0;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Set water-themed background color
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Set water-themed background color
// Initialize assets for the water elementalist game
// Import tween plugin for animations
game.setBackgroundColor(0x1A75FF);
// Game variables
var waterMaster;
var waterProjectiles = [];
var enemies = [];
var waterSources = [];
var score = 0;
var level = 1;
var gameActive = true;
// UI elements
var waterBar;
var scoreText;
var levelText;
// Initialize game UI
function initializeUI() {
	// Create water bar background
	var waterBarBg = new Container();
	var waterBarBgGraphic = waterBarBg.addChild(LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0,
		width: 400,
		height: 40,
		tint: 0x555555
	}));
	// Create water bar
	waterBar = new Container();
	var waterBarGraphic = waterBar.addChild(LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0,
		width: 396,
		height: 36,
		tint: 0x00BFFF
	}));
	// Position water bar
	waterBarBg.x = 20;
	waterBarBg.y = 20;
	waterBar.x = 22;
	waterBar.y = 22;
	// Add to GUI
	LK.gui.topLeft.addChild(waterBarBg);
	LK.gui.topLeft.addChild(waterBar);
	// Create score text
	scoreText = new Text2('Score: 0', {
		size: 60,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(1, 0);
	scoreText.x = -20;
	scoreText.y = 20;
	LK.gui.topRight.addChild(scoreText);
	// Create level text
	levelText = new Text2('Level: 1', {
		size: 60,
		fill: 0xFFFFFF
	});
	levelText.anchor.set(0.5, 0);
	levelText.y = 20;
	LK.gui.top.addChild(levelText);
}
// Initialize player character
function initializePlayer() {
	waterMaster = game.addChild(new WaterMaster());
	waterMaster.x = 2048 / 2;
	waterMaster.y = 2732 - 300;
}
// Initialize water sources
function initializeWaterSources() {
	// Add water sources at different locations
	var positions = [{
		x: 300,
		y: 500
	}, {
		x: 1700,
		y: 500
	}, {
		x: 1000,
		y: 1500
	}];
	for (var i = 0; i < positions.length; i++) {
		var waterSource = new WaterSource();
		waterSource.x = positions[i].x;
		waterSource.y = positions[i].y;
		waterSource.lastWasIntersecting = false;
		waterSources.push(waterSource);
		game.addChild(waterSource);
	}
}
// Create a water projectile
game.createWaterProjectile = function (x, y, speedX, speedY) {
	var projectile = new WaterProjectile();
	projectile.x = x;
	projectile.y = y;
	projectile.lastX = x;
	projectile.lastY = y;
	projectile.init(speedX, speedY, 1 + level * 0.2);
	projectile.lastWasIntersecting = false;
	waterProjectiles.push(projectile);
	game.addChild(projectile);
};
// Spawn enemies
function spawnEnemies() {
	// Determine number of enemies based on level
	var enemyCount = Math.min(2 + level, 8);
	// Clear any existing enemies
	for (var i = 0; i < enemies.length; i++) {
		if (enemies[i].parent) {
			enemies[i].parent.removeChild(enemies[i]);
		}
	}
	enemies = [];
	// Create new enemies
	for (var i = 0; i < enemyCount; i++) {
		var enemy = new Enemy();
		// Position enemy randomly but not too close to player
		do {
			enemy.x = Math.random() * 1848 + 100;
			enemy.y = Math.random() * 1500 + 100;
		} while (Math.sqrt(Math.pow(enemy.x - waterMaster.x, 2) + Math.pow(enemy.y - waterMaster.y, 2)) < 500);
		enemy.lastX = enemy.x;
		enemy.lastY = enemy.y;
		enemy.init(80 + level * 20, 0, 0);
		enemy.lastWasIntersecting = false;
		enemies.push(enemy);
		game.addChild(enemy);
	}
}
// Update score and level
function updateScore(points) {
	score += points;
	scoreText.setText('Score: ' + score);
	// Check for level up
	if (score >= level * 100) {
		levelUp();
	}
}
// Level up
function levelUp() {
	level++;
	levelText.setText('Level: ' + level);
	// Flash screen to indicate level up
	LK.effects.flashScreen(0x00FFFF, 500);
	// Spawn new enemies for the level
	spawnEnemies();
}
// Game initialization
initializeUI();
initializePlayer();
initializeWaterSources();
spawnEnemies();
// Game touch handling
game.lastTouchX = 0;
game.lastTouchY = 0;
// Dragging functionality
var isDragging = false;
// Touch down event
game.down = function (x, y, obj) {
	// Store touch position
	game.lastTouchX = x;
	game.lastTouchY = y;
	// Check if touching water master
	if (waterMaster) {
		var touchPoint = {
			x: x,
			y: y
		};
		var distance = Math.sqrt(Math.pow(touchPoint.x - waterMaster.x, 2) + Math.pow(touchPoint.y - waterMaster.y, 2));
		if (distance < 100) {
			// Start dragging player
			isDragging = true;
		} else {
			// Start charging water shot
			waterMaster.down(x, y, obj);
		}
	}
};
// Touch move event
game.move = function (x, y, obj) {
	// Store touch position
	game.lastTouchX = x;
	game.lastTouchY = y;
	if (isDragging && waterMaster) {
		// Move water master with touch
		waterMaster.x = x;
		waterMaster.y = y;
		// Keep within game bounds
		if (waterMaster.x < 100) waterMaster.x = 100;
		if (waterMaster.x > 2048 - 100) waterMaster.x = 2048 - 100;
		if (waterMaster.y < 100) waterMaster.y = 100;
		if (waterMaster.y > 2732 - 100) waterMaster.y = 2732 - 100;
	}
};
// Touch up event
game.up = function (x, y, obj) {
	// If was charging water shot
	if (!isDragging && waterMaster) {
		waterMaster.up(x, y, obj);
	}
	// Stop dragging
	isDragging = false;
};
// Double tap to activate shield
var lastTapTime = 0;
game.down = function (x, y, obj) {
	var currentTime = Date.now();
	// Check for double tap (within 300ms)
	if (currentTime - lastTapTime < 300) {
		if (waterMaster) {
			waterMaster.activateShield();
		}
	}
	lastTapTime = currentTime;
	// Also handle regular down event
	game.down(x, y, obj);
};
// Game update loop
game.update = function () {
	if (!gameActive) return;
	// Update water master
	if (waterMaster) {
		waterMaster.update();
		// Update water bar UI
		if (waterBar) {
			var waterRatio = waterMaster.currentWater / waterMaster.waterReserve;
			waterBar.children[0].width = 396 * waterRatio;
		}
		// Check water master collisions with water sources
		for (var i = 0; i < waterSources.length; i++) {
			var source = waterSources[i];
			var isIntersecting = waterMaster.intersects(source);
			// Refill water if touching a water source for the first time
			if (!source.lastWasIntersecting && isIntersecting) {
				var refillAmount = source.refillPlayerWater();
				if (refillAmount > 0) {
					waterMaster.refillWater(refillAmount);
					// Visual feedback
					LK.effects.flashObject(source, 0x00FFFF, 500);
				}
			}
			source.lastWasIntersecting = isIntersecting;
		}
	}
	// Update water projectiles
	for (var i = waterProjectiles.length - 1; i >= 0; i--) {
		var projectile = waterProjectiles[i];
		projectile.update();
		// Check if projectile is out of bounds or expired
		if (projectile.x < -100 || projectile.x > 2148 || projectile.y < -100 || projectile.y > 2832 || projectile.age > projectile.lifespan) {
			if (projectile.parent) {
				projectile.parent.removeChild(projectile);
			}
			waterProjectiles.splice(i, 1);
			continue;
		}
		// Check collisions with enemies
		for (var j = 0; j < enemies.length; j++) {
			var enemy = enemies[j];
			var isIntersecting = projectile.intersects(enemy);
			// Handle collision if not already intersecting
			if (!projectile.lastWasIntersecting && isIntersecting) {
				// Enemy takes damage based on projectile power
				var isDefeated = enemy.takeDamage(20 * projectile.power);
				// Remove projectile
				if (projectile.parent) {
					projectile.parent.removeChild(projectile);
				}
				waterProjectiles.splice(i, 1);
				// Play hit sound
				LK.getSound('waterHit').play();
				// If enemy was defeated
				if (isDefeated) {
					if (enemy.parent) {
						enemy.parent.removeChild(enemy);
					}
					enemies.splice(j, 1);
					updateScore(10);
				}
				break;
			}
			if (projectile.lastWasIntersecting !== undefined) {
				projectile.lastWasIntersecting = isIntersecting;
			}
		}
	}
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		var enemy = enemies[i];
		// Move toward player if in range
		var distanceToPlayer = Math.sqrt(Math.pow(enemy.x - waterMaster.x, 2) + Math.pow(enemy.y - waterMaster.y, 2));
		if (distanceToPlayer < 800) {
			enemy.moveToward(waterMaster.x, waterMaster.y, 1 + level * 0.2);
		}
		enemy.update();
		// Check collision with player
		var isIntersecting = enemy.intersects(waterMaster);
		// Handle collision if not already intersecting and shield is not active
		if (!enemy.lastWasIntersecting && isIntersecting && waterMaster.shield.alpha < 0.1) {
			// Game over if no shield
			LK.effects.flashScreen(0xFF0000, 1000);
			LK.showGameOver();
			gameActive = false;
		} else if (!enemy.lastWasIntersecting && isIntersecting && waterMaster.shield.alpha >= 0.1) {
			// Push enemy away if shield is active
			var dirX = enemy.x - waterMaster.x;
			var dirY = enemy.y - waterMaster.y;
			var length = Math.sqrt(dirX * dirX + dirY * dirY);
			if (length > 0) {
				dirX /= length;
				dirY /= length;
			}
			enemy.x += dirX * 200;
			enemy.y += dirY * 200;
			enemy.takeDamage(10);
		}
		enemy.lastWasIntersecting = isIntersecting;
	}
	// Check if all enemies are defeated
	if (enemies.length === 0) {
		// Spawn more enemies
		spawnEnemies();
		updateScore(level * 20);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -244,17 +244,25 @@
 	self.lastRefillTime = 0;
 	self.lastWasIntersecting = false;
 	// Pulsating animation
 	function startPulsating() {
-		tween.create(sourceGraphics.scale).to({
+		tween(sourceGraphics.scale, {
 			x: 1.1,
 			y: 1.1
-		}, 1000).easing(tween.Easing.Sinusoidal.InOut).onComplete(function () {
-			tween.create(sourceGraphics.scale).to({
-				x: 0.9,
-				y: 0.9
-			}, 1000).easing(tween.Easing.Sinusoidal.InOut).onComplete(startPulsating).start();
-		}).start();
+		}, {
+			duration: 1000,
+			easing: tween.easeInOut,
+			onFinish: function onFinish() {
+				tween(sourceGraphics.scale, {
+					x: 0.9,
+					y: 0.9
+				}, {
+					duration: 1000,
+					easing: tween.easeInOut,
+					onFinish: startPulsating
+				});
+			}
+		});
 	}
 	// Start pulsating animation
 	startPulsating();
 	// Provide water to player