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

/**** 
* Classes
****/ 
var Demon = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'basic';
	self.health = 80;
	self.maxHealth = 80;
	self.speed = 0.5;
	self.reward = 10;
	var assetName = 'basicDemon';
	if (self.type === 'fast') {
		assetName = 'fastDemon';
		self.health = 60;
		self.maxHealth = 60;
		self.speed = 1;
		self.reward = 15;
	} else if (self.type === 'tank') {
		assetName = 'tankDemon';
		self.health = 200;
		self.maxHealth = 200;
		self.speed = 0.25;
		self.reward = 25;
	}
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Check for barrier collision
		var blocked = false;
		for (var i = 0; i < golems.length; i++) {
			var golem = golems[i];
			if (golem.type === 'barrier' && self.intersects(golem)) {
				blocked = true;
				break;
			}
		}
		if (!blocked) {
			self.x -= self.speed;
		}
		// Update health bar color
		var healthPercent = self.health / self.maxHealth;
		if (healthPercent < 0.3) {
			graphics.tint = 0xFF0000;
		} else if (healthPercent < 0.6) {
			graphics.tint = 0xFF6600;
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.getSound('hit').play();
		if (self.health <= 0) {
			self.shouldRemove = true;
			stones += self.reward;
			score += self.reward;
			updateUI();
		}
	};
	return self;
});
var Golem = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'basic';
	self.lastShot = 0;
	self.range = 250;
	self.damage = 25;
	self.shootDelay = 60; // frames
	var assetName = 'basicGolem';
	if (self.type === 'heavy') {
		assetName = 'heavyGolem';
		self.damage = 50;
		self.range = 230;
		self.shootDelay = 90;
	} else if (self.type === 'crystal') {
		assetName = 'crystalGolem';
		self.damage = 20;
		self.range = 350;
		self.shootDelay = 30;
	} else if (self.type === 'barrier') {
		assetName = 'barrierGolem';
		self.damage = 0;
		self.range = 0;
		self.shootDelay = 0;
	} else if (self.type === 'spike') {
		assetName = 'spikeGolem';
		self.damage = 10;
		self.range = 0;
		self.shootDelay = 0;
	}
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (self.type === 'barrier') return;
		if (self.type === 'spike') {
			// Check for contact damage with cooldown
			if (!self.damageCooldown) self.damageCooldown = {};
			for (var i = 0; i < demons.length; i++) {
				var demon = demons[i];
				if (self.intersects(demon)) {
					var demonId = demon.id || i; // Use demon id or index as identifier
					var currentTime = LK.ticks;
					if (!self.damageCooldown[demonId] || currentTime - self.damageCooldown[demonId] > 60) {
						demon.takeDamage(self.damage);
						self.damageCooldown[demonId] = currentTime;
					}
				}
			}
			return;
		}
		if (LK.ticks - self.lastShot > self.shootDelay) {
			var target = self.findTarget();
			if (target) {
				self.shoot(target);
				self.lastShot = LK.ticks;
			}
		}
	};
	self.findTarget = function () {
		var closestDemon = null;
		var closestDistance = self.range;
		for (var i = 0; i < demons.length; i++) {
			var demon = demons[i];
			var dx = demon.x - self.x;
			var dy = demon.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestDemon = demon;
			}
		}
		return closestDemon;
	};
	self.shoot = function (target) {
		var projectile = new Projectile();
		projectile.x = self.x;
		projectile.y = self.y;
		projectile.targetX = target.x;
		projectile.targetY = target.y;
		projectile.damage = self.damage;
		projectiles.push(projectile);
		game.addChild(projectile);
		LK.getSound('shoot').play();
	};
	return self;
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('projectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 25;
	self.speed = 8;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 10) {
			self.shouldRemove = true;
			return;
		}
		self.x += dx / distance * self.speed;
		self.y += dy / distance * self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2F5233
});

/**** 
* Game Code
****/ 
// Game variables
var stones = 100;
var score = 0;
var lives = 10;
var wave = 1;
var nextWaveTimer = 0;
var waveDelay = 300; // frames between waves
// Game arrays
var golems = [];
var demons = [];
var projectiles = [];
// Grid system
var gridCols = 8;
var gridRows = 5;
var gridStartX = 400;
var gridStartY = 800;
var cellSize = 160;
// Golem costs
var golemCosts = {
	basic: 50,
	heavy: 100,
	crystal: 75,
	barrier: 80,
	spike: 60,
	shovel: 0
};
// Selected golem type
var selectedGolemType = 'basic';
// UI elements
var stonesText = new Text2('Stones: 100', {
	size: 40,
	fill: 0xFFFFFF
});
stonesText.anchor.set(0, 0);
LK.gui.topLeft.addChild(stonesText);
stonesText.x = 120;
stonesText.y = 20;
var livesText = new Text2('Lives: 10', {
	size: 40,
	fill: 0xFFFFFF
});
livesText.anchor.set(0, 0);
LK.gui.topLeft.addChild(livesText);
livesText.x = 120;
livesText.y = 70;
var waveText = new Text2('Wave: 1', {
	size: 40,
	fill: 0xFFFFFF
});
waveText.anchor.set(0, 0);
LK.gui.topLeft.addChild(waveText);
waveText.x = 120;
waveText.y = 120;
var scoreText = new Text2('Score: 0', {
	size: 40,
	fill: 0xFFFFFF
});
scoreText.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreText);
scoreText.x = -20;
scoreText.y = 20;
// Golem selection buttons
var buttonY = 200;
var buttonSpacing = 100;
var basicButton = LK.getAsset('basicGolem', {
	scaleX: 1.2,
	scaleY: 1.2
});
basicButton.x = 80;
basicButton.y = buttonY;
LK.gui.topLeft.addChild(basicButton);
var heavyButton = LK.getAsset('heavyGolem', {
	scaleX: 1.0,
	scaleY: 1.0
});
heavyButton.x = 80;
heavyButton.y = buttonY + buttonSpacing;
LK.gui.topLeft.addChild(heavyButton);
var crystalButton = LK.getAsset('crystalGolem', {
	scaleX: 1.1,
	scaleY: 1.1
});
crystalButton.x = 80;
crystalButton.y = buttonY + buttonSpacing * 2;
LK.gui.topLeft.addChild(crystalButton);
var barrierButton = LK.getAsset('barrierGolem', {
	scaleX: 0.9,
	scaleY: 1.0
});
barrierButton.x = 80;
barrierButton.y = buttonY + buttonSpacing * 3;
LK.gui.topLeft.addChild(barrierButton);
var spikeButton = LK.getAsset('spikeGolem', {
	scaleX: 1.2,
	scaleY: 1.2
});
spikeButton.x = 80;
spikeButton.y = buttonY + buttonSpacing * 4;
LK.gui.topLeft.addChild(spikeButton);
var shovelButton = LK.getAsset('shovel', {
	scaleX: 1.0,
	scaleY: 1.0
});
shovelButton.x = 80;
shovelButton.y = buttonY + buttonSpacing * 5;
LK.gui.topLeft.addChild(shovelButton);
// Cost labels
var basicCostText = new Text2('50', {
	size: 24,
	fill: 0xFFFF00
});
basicCostText.x = 150;
basicCostText.y = buttonY + 20;
LK.gui.topLeft.addChild(basicCostText);
var heavyCostText = new Text2('100', {
	size: 24,
	fill: 0xFFFF00
});
heavyCostText.x = 150;
heavyCostText.y = buttonY + buttonSpacing + 20;
LK.gui.topLeft.addChild(heavyCostText);
var crystalCostText = new Text2('75', {
	size: 24,
	fill: 0xFFFF00
});
crystalCostText.x = 150;
crystalCostText.y = buttonY + buttonSpacing * 2 + 20;
LK.gui.topLeft.addChild(crystalCostText);
var barrierCostText = new Text2('80', {
	size: 24,
	fill: 0xFFFF00
});
barrierCostText.x = 150;
barrierCostText.y = buttonY + buttonSpacing * 3 + 20;
LK.gui.topLeft.addChild(barrierCostText);
var spikeCostText = new Text2('60', {
	size: 24,
	fill: 0xFFFF00
});
spikeCostText.x = 150;
spikeCostText.y = buttonY + buttonSpacing * 4 + 20;
LK.gui.topLeft.addChild(spikeCostText);
var shovelCostText = new Text2('Remove', {
	size: 20,
	fill: 0xFFFF00
});
shovelCostText.x = 150;
shovelCostText.y = buttonY + buttonSpacing * 5 + 20;
LK.gui.topLeft.addChild(shovelCostText);
// Create grid visualization
var gridCells = [];
for (var row = 0; row < gridRows; row++) {
	gridCells[row] = [];
	for (var col = 0; col < gridCols; col++) {
		var cell = LK.getAsset('gridCell', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.3
		});
		cell.x = gridStartX + col * cellSize;
		cell.y = gridStartY + row * cellSize;
		cell.gridX = col;
		cell.gridY = row;
		gridCells[row][col] = cell;
		game.addChild(cell);
	}
}
// Grid occupied tracking
var gridOccupied = [];
for (var row = 0; row < gridRows; row++) {
	gridOccupied[row] = [];
	for (var col = 0; col < gridCols; col++) {
		gridOccupied[row][col] = false;
	}
}
function updateUI() {
	stonesText.setText('Stones: ' + stones);
	livesText.setText('Lives: ' + lives);
	waveText.setText('Wave: ' + wave);
	scoreText.setText('Score: ' + score);
	// Update button availability
	basicButton.alpha = stones >= golemCosts.basic ? 1.0 : 0.5;
	heavyButton.alpha = stones >= golemCosts.heavy ? 1.0 : 0.5;
	crystalButton.alpha = stones >= golemCosts.crystal ? 1.0 : 0.5;
	barrierButton.alpha = stones >= golemCosts.barrier ? 1.0 : 0.5;
	spikeButton.alpha = stones >= golemCosts.spike ? 1.0 : 0.5;
	shovelButton.alpha = 1.0; // Shovel is always available
}
function spawnWave() {
	var demonsToSpawn = Math.min(3 + Math.floor(wave / 2), 8);
	var spawnDelay = 0;
	for (var i = 0; i < demonsToSpawn; i++) {
		LK.setTimeout(function () {
			var demonType = 'basic';
			if (wave > 2 && Math.random() < 0.3) demonType = 'fast';
			if (wave > 4 && Math.random() < 0.2) demonType = 'tank';
			var demon = new Demon(demonType);
			demon.x = 2048;
			demon.y = gridStartY + Math.floor(Math.random() * gridRows) * cellSize;
			demons.push(demon);
			game.addChild(demon);
		}, spawnDelay);
		spawnDelay += 1000 + Math.random() * 500;
	}
}
function getGridPosition(x, y) {
	var col = Math.floor((x - gridStartX + cellSize / 2) / cellSize);
	var row = Math.floor((y - gridStartY + cellSize / 2) / cellSize);
	if (col >= 0 && col < gridCols && row >= 0 && row < gridRows) {
		return {
			col: col,
			row: row
		};
	}
	return null;
}
// Button click handlers
basicButton.down = function () {
	if (stones >= golemCosts.basic) {
		selectedGolemType = 'basic';
		updateButtonSelection();
	}
};
heavyButton.down = function () {
	if (stones >= golemCosts.heavy) {
		selectedGolemType = 'heavy';
		updateButtonSelection();
	}
};
crystalButton.down = function () {
	if (stones >= golemCosts.crystal) {
		selectedGolemType = 'crystal';
		updateButtonSelection();
	}
};
barrierButton.down = function () {
	if (stones >= golemCosts.barrier) {
		selectedGolemType = 'barrier';
		updateButtonSelection();
	}
};
spikeButton.down = function () {
	if (stones >= golemCosts.spike) {
		selectedGolemType = 'spike';
		updateButtonSelection();
	}
};
shovelButton.down = function () {
	selectedGolemType = 'shovel';
	updateButtonSelection();
};
function updateButtonSelection() {
	basicButton.tint = selectedGolemType === 'basic' ? 0x00FF00 : 0xFFFFFF;
	heavyButton.tint = selectedGolemType === 'heavy' ? 0x00FF00 : 0xFFFFFF;
	crystalButton.tint = selectedGolemType === 'crystal' ? 0x00FF00 : 0xFFFFFF;
	barrierButton.tint = selectedGolemType === 'barrier' ? 0x00FF00 : 0xFFFFFF;
	spikeButton.tint = selectedGolemType === 'spike' ? 0x00FF00 : 0xFFFFFF;
	shovelButton.tint = selectedGolemType === 'shovel' ? 0x00FF00 : 0xFFFFFF;
}
// Initialize button selection
updateButtonSelection();
// Game click handler
game.down = function (x, y, obj) {
	var gridPos = getGridPosition(x, y);
	if (gridPos) {
		if (selectedGolemType === 'shovel') {
			// Remove golem if one exists at this position
			if (gridOccupied[gridPos.row][gridPos.col]) {
				for (var i = golems.length - 1; i >= 0; i--) {
					var golem = golems[i];
					var golemGridCol = Math.floor((golem.x - gridStartX + cellSize / 2) / cellSize);
					var golemGridRow = Math.floor((golem.y - gridStartY + cellSize / 2) / cellSize);
					if (golemGridCol === gridPos.col && golemGridRow === gridPos.row) {
						golem.destroy();
						golems.splice(i, 1);
						gridOccupied[gridPos.row][gridPos.col] = false;
						LK.getSound('remove').play();
						break;
					}
				}
			}
		} else if (!gridOccupied[gridPos.row][gridPos.col]) {
			var cost = golemCosts[selectedGolemType];
			if (stones >= cost) {
				var golem = new Golem(selectedGolemType);
				golem.x = gridStartX + gridPos.col * cellSize;
				golem.y = gridStartY + gridPos.row * cellSize;
				golems.push(golem);
				game.addChild(golem);
				gridOccupied[gridPos.row][gridPos.col] = true;
				stones -= cost;
				updateUI();
				LK.getSound('place').play();
			}
		}
	}
};
// Initial wave spawn
LK.setTimeout(function () {
	spawnWave();
}, 2000);
game.update = function () {
	// Update golems
	for (var i = golems.length - 1; i >= 0; i--) {
		var golem = golems[i];
		if (golem.update) golem.update();
	}
	// Update demons
	for (var i = demons.length - 1; i >= 0; i--) {
		var demon = demons[i];
		demon.update();
		// Check if demon reached left side
		if (demon.x < 300) {
			lives--;
			demon.destroy();
			demons.splice(i, 1);
			updateUI();
			if (lives <= 0) {
				LK.setScore(score);
				LK.showGameOver();
				return;
			}
		} else if (demon.shouldRemove) {
			demon.destroy();
			demons.splice(i, 1);
		}
	}
	// Update projectiles
	for (var i = projectiles.length - 1; i >= 0; i--) {
		var projectile = projectiles[i];
		projectile.update();
		if (projectile.shouldRemove) {
			projectile.destroy();
			projectiles.splice(i, 1);
			continue;
		}
		// Check projectile vs demon collision
		for (var j = demons.length - 1; j >= 0; j--) {
			var demon = demons[j];
			if (projectile.intersects(demon)) {
				demon.takeDamage(projectile.damage);
				projectile.destroy();
				projectiles.splice(i, 1);
				break;
			}
		}
	}
	// Wave management
	if (demons.length === 0) {
		nextWaveTimer++;
		if (nextWaveTimer >= waveDelay) {
			wave++;
			nextWaveTimer = 0;
			spawnWave();
			updateUI();
			// Victory condition
			if (wave > 10) {
				LK.setScore(score);
				LK.showYouWin();
				return;
			}
		}
	}
};
// Initialize UI
updateUI();

===================================================================
--- original.js
+++ change.js
@@ -99,13 +99,19 @@
 	});
 	self.update = function () {
 		if (self.type === 'barrier') return;
 		if (self.type === 'spike') {
-			// Check for contact damage
+			// Check for contact damage with cooldown
+			if (!self.damageCooldown) self.damageCooldown = {};
 			for (var i = 0; i < demons.length; i++) {
 				var demon = demons[i];
 				if (self.intersects(demon)) {
-					demon.takeDamage(self.damage);
+					var demonId = demon.id || i; // Use demon id or index as identifier
+					var currentTime = LK.ticks;
+					if (!self.damageCooldown[demonId] || currentTime - self.damageCooldown[demonId] > 60) {
+						demon.takeDamage(self.damage);
+						self.damageCooldown[demonId] = currentTime;
+					}
 				}
 			}
 			return;
 		}