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

/**** 
* Classes
****/ 
var Fighter = Container.expand(function (playerNumber, color) {
	var self = Container.call(this);
	var assetName = 'player1';
	if (playerNumber === 2) assetName = 'player2';else if (playerNumber === 3) assetName = 'player3';else if (playerNumber === 4) assetName = 'player4';
	var fighterGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.playerNumber = playerNumber;
	self.velocityX = 0;
	self.velocityY = 0;
	self.onGround = false;
	self.jumpsRemaining = 2; // Allow double jump
	self.health = 0;
	self.maxHealth = 100;
	self.damage = 0; // New damage accumulation property
	self.moveSpeed = 8;
	self.jumpPower = 25;
	self.knockbackResistance = 1.0;
	self.lastHitTime = 0;
	self.invulnerable = false;
	self.powerupCount = 0; // Track number of powerups collected
	self.baseMoveSpeed = 8; // Store original move speed
	self.baseJumpPower = 25; // Store original jump power
	self.baseDamage = 15; // Store original damage
	self.baseKnockback = 20; // Store original knockback
	self.lastVelocityX = 0; // Track last velocity for rotation
	// Create damage bar background
	var damageBarBg = self.addChild(LK.getAsset('platform', {
		width: 100,
		height: 12,
		anchorX: 0.5,
		anchorY: 1.0,
		x: 0,
		y: -130
	}));
	damageBarBg.tint = 0x333333;
	damageBarBg.scaleX = 0.8;
	damageBarBg.scaleY = 0.3;
	// Create damage bar fill
	self.damageBar = self.addChild(LK.getAsset('platform', {
		width: 100,
		height: 12,
		anchorX: 0,
		anchorY: 1.0,
		x: -40,
		y: -130
	}));
	self.damageBar.tint = 0xff4444;
	self.damageBar.scaleX = 0;
	self.damageBar.scaleY = 0.3;
	// Create damage text
	self.damageText = self.addChild(new Text2('0%', {
		size: 30,
		fill: 0xFFFFFF,
		stroke: 0x000000,
		strokeThickness: 4
	}));
	self.damageText.anchor.set(0.5, 1);
	self.damageText.x = 0;
	self.damageText.y = -140;
	self.takeDamage = function (damage, knockbackX, knockbackY) {
		if (self.invulnerable) return;
		self.health += damage;
		self.damage += damage; // Accumulate damage for knockback scaling
		// Cap damage at 999%
		if (self.damage > 999) self.damage = 999;
		// Update damage display
		self.damageText.setText(Math.floor(self.damage) + '%');
		// Reapply stroke properties to maintain black background texture
		if (self.damageText.style) {
			self.damageText.style.stroke = 0x000000;
			self.damageText.style.strokeThickness = 4;
		}
		// Update damage bar scale (0 to 1 based on damage up to 200%)
		var barScale = Math.min(self.damage / 200, 1);
		self.damageBar.scaleX = barScale * 0.8;
		// Change bar color based on damage level
		if (self.damage < 50) {
			self.damageBar.tint = 0x44ff44; // Green for low damage
		} else if (self.damage < 100) {
			self.damageBar.tint = 0xffff44; // Yellow for medium damage
		} else if (self.damage < 150) {
			self.damageBar.tint = 0xff8844; // Orange for high damage
		} else {
			self.damageBar.tint = 0xff4444; // Red for very high damage
		}
		// Check if player has reached 200 damage - explosion and life loss
		if (self.damage >= 200) {
			// Create explosion effect with tween
			tween(self, {
				scaleX: 2.0,
				scaleY: 2.0,
				alpha: 0
			}, {
				duration: 500,
				easing: tween.bounceOut,
				onFinish: function onFinish() {
					// Reset scale and alpha after explosion
					self.scaleX = 1.0;
					self.scaleY = 1.0;
					self.alpha = 1.0;
					// Trigger respawn which handles life loss
					self.respawn();
				}
			});
			// Flash screen effect for dramatic explosion
			LK.effects.flashScreen(0xff8800, 600);
			// Play explosion sound effect
			LK.getSound('explosion').play();
			// Reset damage to prevent multiple explosions
			self.damage = 0;
			return; // Exit early to prevent further processing this frame
		}
		// Knockback multiplier based on accumulated damage - exponential scaling for stronger hits at higher damage
		var knockbackMultiplier = 1.5 + self.damage / 20 + Math.pow(self.damage / 100, 1.5); // Exponential scaling that increases dramatically with damage
		self.velocityX += knockbackX * knockbackMultiplier / self.knockbackResistance;
		self.velocityY += knockbackY * knockbackMultiplier / self.knockbackResistance;
		// Flash effect when hit
		LK.effects.flashObject(self, 0xff0000, 300);
		self.invulnerable = true;
		LK.setTimeout(function () {
			self.invulnerable = false;
		}, 500);
		LK.getSound('hit').play();
	};
	self.attack = function (targetX, targetY) {
		var attackRange = 150;
		var damage = self.baseDamage + self.powerupCount * 8; // Increase damage by 8 per powerup
		var baseKnockback = self.baseKnockback + self.powerupCount * 10; // Increase knockback by 10 per powerup
		for (var i = 0; i < fighters.length; i++) {
			var target = fighters[i];
			if (target === self) continue;
			var distance = Math.sqrt(Math.pow(target.x - self.x, 2) + Math.pow(target.y - self.y, 2));
			if (distance <= attackRange) {
				var angle = Math.atan2(target.y - self.y, target.x - self.x);
				var knockbackX = Math.cos(angle) * baseKnockback;
				var knockbackY = Math.sin(angle) * baseKnockback - 5; // Slight upward angle
				target.takeDamage(damage, knockbackX, knockbackY);
			}
		}
	};
	self.update = function () {
		// Update movement stats based on powerups
		self.moveSpeed = self.baseMoveSpeed + self.powerupCount * 3; // Increase move speed by 3 per powerup
		self.jumpPower = self.baseJumpPower + self.powerupCount * 5; // Increase jump power by 5 per powerup
		// Apply gravity
		if (!self.onGround) {
			self.velocityY += 1.2;
		}
		// Apply friction
		self.velocityX *= 0.85;
		if (self.onGround) {
			self.velocityX *= 0.75;
		}
		// Limit velocities to prevent teleportation
		var maxVelocityX = 20;
		var maxVelocityY = 30;
		if (self.velocityX > maxVelocityX) {
			self.velocityX = maxVelocityX;
		}
		if (self.velocityX < -maxVelocityX) {
			self.velocityX = -maxVelocityX;
		}
		if (self.velocityY > maxVelocityY) {
			self.velocityY = maxVelocityY;
		}
		if (self.velocityY < -maxVelocityY) {
			self.velocityY = -maxVelocityY;
		}
		// Track last position for smoke trail
		if (self.lastX === undefined) self.lastX = self.x;
		if (self.lastY === undefined) self.lastY = self.y;
		// Update position
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Generate smoke trail when moving
		var movementSpeed = Math.sqrt(Math.pow(self.x - self.lastX, 2) + Math.pow(self.y - self.lastY, 2));
		if (movementSpeed > 3 && LK.ticks % 3 === 0) {
			// Calculate movement direction
			var movementDirectionX = self.x - self.lastX;
			var movementDirectionY = self.y - self.lastY;
			// Normalize the direction
			var directionLength = Math.sqrt(movementDirectionX * movementDirectionX + movementDirectionY * movementDirectionY);
			if (directionLength > 0) {
				movementDirectionX /= directionLength;
				movementDirectionY /= directionLength;
			}
			// Position smoke trail behind the movement direction
			var smokeDistance = 30; // Distance behind the player
			var smokeX = self.x - movementDirectionX * smokeDistance;
			var smokeY = self.y - movementDirectionY * smokeDistance + 20;
			var smoke = new SmokeTrail(self.playerNumber, smokeX, smokeY);
			game.addChild(smoke);
			smokeTrails.push(smoke);
		}
		// Update last position
		self.lastX = self.x;
		self.lastY = self.y;
		// Update visual size based on powerup count
		var targetScale = 1.0 + self.powerupCount * 0.2; // Increase size by 20% per powerup
		if (Math.abs(fighterGraphics.scaleX) !== targetScale) {
			var isFlipped = fighterGraphics.scaleX < 0;
			fighterGraphics.scaleX = isFlipped ? -targetScale : targetScale;
			fighterGraphics.scaleY = targetScale;
		}
		// Rotate player based on movement direction
		if (Math.abs(self.velocityX) > 1) {
			// Only rotate if moving with significant velocity
			if (self.velocityX > 0) {
				// Moving right - face right (normal orientation)
				fighterGraphics.scaleX = Math.abs(fighterGraphics.scaleX);
			} else {
				// Moving left - face left (flip horizontally)
				fighterGraphics.scaleX = -Math.abs(fighterGraphics.scaleX);
			}
		}
		// Platform collision
		var wasOnGround = self.onGround;
		self.onGround = false;
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			// More precise collision detection with tighter bounds
			var platformLeft = platform.x - platform.width / 2 + 10; // Add small margin
			var platformRight = platform.x + platform.width / 2 - 10; // Add small margin
			var platformTop = platform.y - platform.height / 2;
			var platformBottom = platform.y + platform.height / 2;
			// Check if player is within platform horizontal bounds and approaching from above
			if (self.x >= platformLeft && self.x <= platformRight && self.y >= platformTop - 20 && self.y <= platformBottom + 5 && self.velocityY >= 0) {
				// Snap player to exact platform surface
				self.y = platformTop;
				self.velocityY = 0;
				// Play landing sound if just landed (wasn't on ground before)
				if (!wasOnGround) {
					LK.getSound('landing').play();
				}
				self.onGround = true;
				self.jumpsRemaining = 2; // Reset jumps when landing
				break;
			}
		}
		// Check if fallen off screen
		if (self.y > 2900) {
			// Play fall sound effect
			LK.getSound('fall').play();
			self.respawn();
		}
		// Fighter-to-fighter collision detection and pushing
		for (var i = 0; i < fighters.length; i++) {
			var otherFighter = fighters[i];
			if (otherFighter === self || otherFighter.destroyed) continue;
			// Calculate distance between fighters
			var deltaX = otherFighter.x - self.x;
			var deltaY = otherFighter.y - self.y;
			var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
			// Check if fighters are colliding (within collision radius)
			var collisionRadius = 80; // Adjust this value to change collision sensitivity
			if (distance < collisionRadius && distance > 0) {
				// Calculate push force based on overlap
				var overlap = collisionRadius - distance;
				var pushStrength = overlap * 0.3; // Adjust push strength
				// Normalize direction vector
				var normalX = deltaX / distance;
				var normalY = deltaY / distance;
				// Apply push forces to both fighters
				var pushX = normalX * pushStrength;
				var pushY = normalY * pushStrength * 0.3; // Reduced vertical push
				// Push both fighters apart
				self.velocityX -= pushX;
				self.velocityY -= pushY;
				otherFighter.velocityX += pushX;
				otherFighter.velocityY += pushY;
				// Separate fighters to prevent overlap
				var separationX = normalX * (overlap * 0.5);
				var separationY = normalY * (overlap * 0.3);
				self.x -= separationX;
				self.y -= separationY;
				otherFighter.x += separationX;
				otherFighter.y += separationY;
			}
		}
		// Screen boundaries (horizontal bouncing)
		if (self.x < 60) {
			self.x = 60;
			self.velocityX = Math.abs(self.velocityX) * 0.5;
		}
		if (self.x > 1988) {
			self.x = 1988;
			self.velocityX = -Math.abs(self.velocityX) * 0.5;
		}
	};
	self.respawn = function () {
		// Decrease lives for the player who died
		if (self.playerNumber === 1) {
			player1Lives--;
		} else if (self.playerNumber === 2) {
			player2Lives--;
		} else if (self.playerNumber === 3) {
			player3Lives--;
		} else if (self.playerNumber === 4) {
			player4Lives--;
		}
		updateScoreDisplay();
		// Check if player is eliminated (no lives left)
		var isEliminated = false;
		if (self.playerNumber === 1 && player1Lives <= 0) {
			isEliminated = true;
		} else if (self.playerNumber === 2 && player2Lives <= 0) {
			isEliminated = true;
		} else if (self.playerNumber === 3 && player3Lives <= 0) {
			isEliminated = true;
		} else if (self.playerNumber === 4 && player4Lives <= 0) {
			isEliminated = true;
		}
		if (isEliminated) {
			// Remove player from the game completely
			self.destroy();
			// Remove from fighters array
			for (var j = fighters.length - 1; j >= 0; j--) {
				if (fighters[j] === self) {
					fighters.splice(j, 1);
					break;
				}
			}
			activePlayers--;
			// Check if only one player remains
			if (activePlayers <= 1) {
				// Find the winner
				var winner = "";
				if (player1Lives > 0) winner = "Player 1";else if (player2Lives > 0) winner = "Player 2";else if (player3Lives > 0) winner = "Player 3";else if (player4Lives > 0) winner = "Player 4";
				LK.setScore(100);
				LK.showGameOver();
			}
		} else {
			// Player still has lives, respawn normally
			if (self.playerNumber === 1) {
				self.x = 400;
			} else if (self.playerNumber === 2) {
				self.x = 1648;
			} else if (self.playerNumber === 3) {
				self.x = 700;
			} else if (self.playerNumber === 4) {
				self.x = 1348;
			}
			self.y = 1000;
			self.velocityX = 0;
			self.velocityY = 0;
			self.health = 0;
			self.damage = 0; // Reset damage on respawn
			self.powerupCount = 0; // Reset powerup count on respawn
			self.damageText.setText('0%');
			// Reapply stroke properties to maintain black background texture
			if (self.damageText.style) {
				self.damageText.style.stroke = 0x000000;
				self.damageText.style.strokeThickness = 4;
			}
			self.damageBar.scaleX = 0;
			self.damageBar.tint = 0x44ff44;
			self.jumpsRemaining = 2; // Reset jumps on respawn
		}
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifeTime = 0;
	self.maxLifeTime = 600; // 10 seconds at 60fps
	self.collected = false;
	self.velocityY = 0; // Falling velocity
	self.onGround = false; // Track if powerup has landed
	self.update = function () {
		self.lifeTime++;
		self.rotation += 0.05;
		// Apply gravity if not on ground
		if (!self.onGround) {
			self.velocityY += 0.8; // Gravity effect
			self.y += self.velocityY;
			// Check platform collision for landing
			for (var i = 0; i < platforms.length; i++) {
				var platform = platforms[i];
				var platformLeft = platform.x - platform.width / 2;
				var platformRight = platform.x + platform.width / 2;
				var platformTop = platform.y - platform.height / 2;
				var platformBottom = platform.y + platform.height / 2;
				// Check if powerup is within platform bounds and landing on top
				if (self.x >= platformLeft && self.x <= platformRight && self.y >= platformTop - 30 && self.y <= platformBottom && self.velocityY >= 0) {
					self.y = platformTop - 30; // Position on top of platform
					self.velocityY = 0;
					self.onGround = true;
					break;
				}
			}
			// Remove if fallen off screen
			if (self.y > 2800) {
				self.destroy();
				for (var j = powerups.length - 1; j >= 0; j--) {
					if (powerups[j] === self) {
						powerups.splice(j, 1);
						break;
					}
				}
				return;
			}
		} else {
			// Bounce effect when on ground
			self.y += Math.sin(self.lifeTime * 0.1) * 0.5;
		}
		if (self.lifeTime > self.maxLifeTime) {
			self.destroy();
			for (var i = powerups.length - 1; i >= 0; i--) {
				if (powerups[i] === self) {
					powerups.splice(i, 1);
					break;
				}
			}
		}
		// Check collection by players
		if (!self.collected) {
			for (var i = 0; i < fighters.length; i++) {
				var fighter = fighters[i];
				var distance = Math.sqrt(Math.pow(fighter.x - self.x, 2) + Math.pow(fighter.y - self.y, 2));
				if (distance < 80) {
					self.collected = true;
					// Increase powerup count for stacking effects
					fighter.powerupCount++;
					// Visual effects for powerup collection
					LK.getSound('powerup').play();
					LK.effects.flashObject(fighter, 0xffd700, 800);
					// Create scaling animation effect
					tween(fighter, {
						scaleX: 1.3,
						scaleY: 1.3
					}, {
						duration: 200,
						easing: tween.bounceOut,
						onFinish: function onFinish() {
							// Scale back down slightly
							tween(fighter, {
								scaleX: 1.0 + fighter.powerupCount * 0.2,
								scaleY: 1.0 + fighter.powerupCount * 0.2
							}, {
								duration: 300,
								easing: tween.easeOut
							});
						}
					});
					// Temporary knockback resistance boost (stacks with permanent effects)
					var originalResistance = fighter.knockbackResistance;
					fighter.knockbackResistance *= 0.7; // 30% less knockback temporarily
					LK.setTimeout(function () {
						fighter.knockbackResistance = originalResistance;
					}, 3000);
					self.destroy();
					for (var j = powerups.length - 1; j >= 0; j--) {
						if (powerups[j] === self) {
							powerups.splice(j, 1);
							break;
						}
					}
					break;
				}
			}
		}
	};
	return self;
});
var SmokeTrail = Container.expand(function (playerNumber, x, y) {
	var self = Container.call(this);
	var assetName = 'smokeTrail1';
	if (playerNumber === 2) assetName = 'smokeTrail2';else if (playerNumber === 3) assetName = 'smokeTrail3';else if (playerNumber === 4) assetName = 'smokeTrail4';
	var smokeGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.lifeTime = 0;
	self.maxLifeTime = 30; // 0.5 seconds at 60fps
	self.startScale = 0.6 + Math.random() * 0.4;
	self.endScale = 1.2 + Math.random() * 0.8;
	smokeGraphics.scaleX = self.startScale;
	smokeGraphics.scaleY = self.startScale;
	smokeGraphics.alpha = 0.9;
	self.velocityX = (Math.random() - 0.5) * 2;
	self.velocityY = -2 - Math.random() * 3;
	self.update = function () {
		self.lifeTime++;
		var progress = self.lifeTime / self.maxLifeTime;
		// Move the smoke particle
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Fade out and scale up over time
		smokeGraphics.alpha = 0.9 * (1 - progress);
		var currentScale = self.startScale + (self.endScale - self.startScale) * progress;
		smokeGraphics.scaleX = currentScale;
		smokeGraphics.scaleY = currentScale;
		// Remove when life time is over
		if (self.lifeTime >= self.maxLifeTime) {
			self.destroy();
			for (var i = smokeTrails.length - 1; i >= 0; i--) {
				if (smokeTrails[i] === self) {
					smokeTrails.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
// Game variables
var fighters = [];
var platforms = [];
var powerups = [];
var smokeTrails = [];
var player1Lives = 3;
var player2Lives = 3;
var player3Lives = 3;
var player4Lives = 3;
var activePlayers = 4;
var draggedFighter = null;
var lastTapTime = 0;
var powerupSpawnTimer = 0;
// Add background image
var backgroundImage = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
}));
// Add second background image on top of the first
var backgroundOverlay = game.addChild(LK.getAsset('backgroundOverlay', {
	anchorX: 0,
	anchorY: 1,
	x: 0,
	y: 2732
}));
// Add third background image above the previous two
var backgroundTop = game.addChild(LK.getAsset('backgroundTop', {
	anchorX: 0,
	anchorY: 1,
	x: 0,
	y: 2732
}));
// Button press states
var leftButtonPressed = false;
var rightButtonPressed = false;
var jumpButtonPressed = false;
var attackButtonPressed = false;
// Create platforms
var mainPlatform = game.addChild(LK.getAsset('mainPlatform', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1400
}));
platforms.push(mainPlatform);
var leftPlatform = game.addChild(LK.getAsset('platform', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 400,
	y: 1100
}));
platforms.push(leftPlatform);
var rightPlatform = game.addChild(LK.getAsset('platform', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1648,
	y: 1100
}));
platforms.push(rightPlatform);
var topPlatform = game.addChild(LK.getAsset('platform', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 800
}));
platforms.push(topPlatform);
// Add decorative textured images directly on top of platforms
var mainPlatformTexture = game.addChild(LK.getAsset('platformTexture', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: 1024,
	y: 1250
}));
mainPlatformTexture.scaleX = 2.5; // Scale to match main platform width
mainPlatformTexture.scaleY = 0.8;
var leftPlatformTexture = game.addChild(LK.getAsset('platformTexture', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: 400,
	y: 1000
}));
leftPlatformTexture.scaleX = 1.25; // Scale to match platform width
leftPlatformTexture.scaleY = 0.6;
var rightPlatformTexture = game.addChild(LK.getAsset('platformTexture', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: 1648,
	y: 1000
}));
rightPlatformTexture.scaleX = 1.25; // Scale to match platform width
rightPlatformTexture.scaleY = 0.6;
var topPlatformTexture = game.addChild(LK.getAsset('platformTexture', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: 1024,
	y: 700
}));
topPlatformTexture.scaleX = 1.25; // Scale to match platform width
topPlatformTexture.scaleY = 0.6;
// Create fighters
var player1 = game.addChild(new Fighter(1));
player1.x = 400;
player1.y = 1000;
fighters.push(player1);
var player2 = game.addChild(new Fighter(2));
player2.x = 1648;
player2.y = 1000;
fighters.push(player2);
var player3 = game.addChild(new Fighter(3));
player3.x = 700;
player3.y = 700;
fighters.push(player3);
var player4 = game.addChild(new Fighter(4));
player4.x = 1348;
player4.y = 700;
fighters.push(player4);
// UI Elements
var scoreText = new Text2('Player 1: 0 | Player 2: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
// Create left movement button for player 1
var leftButton = LK.getAsset('leftButtonIcon', {
	anchorX: 0,
	anchorY: 1,
	x: 50,
	y: -160,
	scaleX: 3,
	scaleY: 3
});
LK.gui.bottomLeft.addChild(leftButton);
// Create right movement button for player 1
var rightButton = LK.getAsset('rightButtonIcon', {
	anchorX: 0,
	anchorY: 1,
	x: 280,
	y: -160,
	scaleX: 3,
	scaleY: 3
});
LK.gui.bottomLeft.addChild(rightButton);
// Create jump button for player 1
var jumpButton = LK.getAsset('jumpButtonIcon', {
	anchorX: 0,
	anchorY: 1,
	x: 165,
	y: -300,
	scaleX: 3,
	scaleY: 3
});
LK.gui.bottomLeft.addChild(jumpButton);
// Create attack button for player 1
var attackButton = LK.getAsset('attackButtonIcon', {
	anchorX: 1,
	anchorY: 1,
	x: -100,
	y: -160,
	scaleX: 3,
	scaleY: 3
});
LK.gui.bottomRight.addChild(attackButton);
function updateScoreDisplay() {
	scoreText.setText('P1 Lives: ' + player1Lives + ' | P2 Lives: ' + player2Lives + ' | P3 Lives: ' + player3Lives + ' | P4 Lives: ' + player4Lives);
}
// Left button event handler
leftButton.down = function (x, y, obj) {
	leftButtonPressed = true;
	leftButton.alpha = 0.6;
	tween(leftButton, {
		scaleX: 2.7,
		scaleY: 2.7
	}, {
		duration: 100
	});
};
leftButton.up = function (x, y, obj) {
	leftButtonPressed = false;
	leftButton.alpha = 1.0;
	tween(leftButton, {
		scaleX: 3.0,
		scaleY: 3.0
	}, {
		duration: 100
	});
};
// Right button event handler
rightButton.down = function (x, y, obj) {
	rightButtonPressed = true;
	rightButton.alpha = 0.6;
	tween(rightButton, {
		scaleX: 2.7,
		scaleY: 2.7
	}, {
		duration: 100
	});
};
rightButton.up = function (x, y, obj) {
	rightButtonPressed = false;
	rightButton.alpha = 1.0;
	tween(rightButton, {
		scaleX: 3.0,
		scaleY: 3.0
	}, {
		duration: 100
	});
};
// Jump button event handler
jumpButton.down = function (x, y, obj) {
	jumpButtonPressed = true;
	jumpButton.alpha = 0.6;
	tween(jumpButton, {
		scaleX: 2.7,
		scaleY: 2.7
	}, {
		duration: 100
	});
};
jumpButton.up = function (x, y, obj) {
	jumpButtonPressed = false;
	jumpButton.alpha = 1.0;
	tween(jumpButton, {
		scaleX: 3.0,
		scaleY: 3.0
	}, {
		duration: 100
	});
};
// Attack button event handler
attackButton.down = function (x, y, obj) {
	attackButtonPressed = true;
	attackButton.alpha = 0.6;
	tween(attackButton, {
		scaleX: 2.7,
		scaleY: 2.7
	}, {
		duration: 100
	});
};
attackButton.up = function (x, y, obj) {
	attackButtonPressed = false;
	attackButton.alpha = 1.0;
	tween(attackButton, {
		scaleX: 3.0,
		scaleY: 3.0
	}, {
		duration: 100
	});
};
function spawnPowerUp() {
	if (powerups.length < 2) {
		var powerup = game.addChild(new PowerUp());
		// Spawn from random position above the screen
		powerup.x = 300 + Math.random() * 1448; // Random X within game bounds
		powerup.y = -100; // Start above screen
		powerup.velocityY = 2 + Math.random() * 3; // Initial falling speed
		powerups.push(powerup);
	}
}
// Game controls
game.down = function (x, y, obj) {
	var currentTime = LK.ticks;
	var tapSpeed = 20; // frames between taps for double tap
	// Find closest fighter to touch point (only player 1)
	var closestFighter = null;
	var closestDistance = Infinity;
	for (var i = 0; i < fighters.length; i++) {
		var fighter = fighters[i];
		// Only allow touch control for player 1 if they're still alive
		if (fighter.playerNumber !== 1 || player1Lives <= 0) continue;
		var distance = Math.sqrt(Math.pow(fighter.x - x, 2) + Math.pow(fighter.y - y, 2));
		if (distance < closestDistance && distance < 200) {
			closestDistance = distance;
			closestFighter = fighter;
		}
	}
	if (closestFighter) {
		// Check for double tap (attack)
		if (currentTime - lastTapTime < tapSpeed) {
			closestFighter.attack(x, y);
			draggedFighter = null;
		} else {
			draggedFighter = closestFighter;
		}
		lastTapTime = currentTime;
	}
};
game.move = function (x, y, obj) {
	if (draggedFighter && draggedFighter.playerNumber === 1) {
		var deltaX = x - draggedFighter.x;
		var deltaY = y - draggedFighter.y;
		// Move fighter towards touch point
		draggedFighter.velocityX += deltaX * 0.3;
		// Jump if dragging upward and has jumps remaining
		if (deltaY < -50 && draggedFighter.jumpsRemaining > 0) {
			draggedFighter.velocityY = -draggedFighter.jumpPower;
			draggedFighter.jumpsRemaining--;
			draggedFighter.onGround = false;
			LK.getSound('jump').play();
		}
	}
};
game.up = function (x, y, obj) {
	draggedFighter = null;
};
// Function to find closest target for AI
function findClosestTarget(aiPlayer) {
	var closestPlayer = null;
	var closestDistance = Infinity;
	for (var i = 0; i < fighters.length; i++) {
		var fighter = fighters[i];
		// Skip self, dead players, and destroyed fighters
		if (fighter === aiPlayer) continue;
		if (fighter.destroyed) continue;
		if (fighter.playerNumber === 1 && player1Lives <= 0) continue;
		if (fighter.playerNumber === 2 && player2Lives <= 0) continue;
		if (fighter.playerNumber === 3 && player3Lives <= 0) continue;
		if (fighter.playerNumber === 4 && player4Lives <= 0) continue;
		var distance = Math.sqrt(Math.pow(fighter.x - aiPlayer.x, 2) + Math.pow(fighter.y - aiPlayer.y, 2));
		if (distance < closestDistance) {
			closestDistance = distance;
			closestPlayer = fighter;
		}
	}
	return {
		player: closestPlayer,
		distance: closestDistance
	};
}
// AI variables for player 2
var aiDecisionTimer = 0;
var aiAction = 'idle';
var aiTargetX = player2.x;
var aiCooldown = 0;
// AI variables for player 3
var ai3DecisionTimer = 0;
var ai3Action = 'idle';
var ai3TargetX = 700;
var ai3Cooldown = 0;
// AI variables for player 4
var ai4DecisionTimer = 0;
var ai4Action = 'idle';
var ai4TargetX = 1348;
var ai4Cooldown = 0;
game.update = function () {
	// Start background music on first update
	if (LK.ticks === 1) {
		LK.playMusic('backgroundMusic');
	}
	// Handle continuous button presses for player 1 (only if alive)
	if (player1Lives > 0) {
		if (leftButtonPressed) {
			player1.velocityX -= player1.moveSpeed * 0.5;
		}
		if (rightButtonPressed) {
			player1.velocityX += player1.moveSpeed * 0.5;
		}
		if (jumpButtonPressed && player1.jumpsRemaining > 0) {
			player1.velocityY = -player1.jumpPower;
			player1.jumpsRemaining--;
			player1.onGround = false;
			LK.getSound('jump').play();
			jumpButtonPressed = false; // Prevent continuous jumping
		}
		if (attackButtonPressed) {
			player1.attack(player1.x, player1.y);
			attackButtonPressed = false; // Prevent continuous attacking
		}
	}
	// Spawn power-ups occasionally
	powerupSpawnTimer++;
	if (powerupSpawnTimer > 300) {
		// Every 5 seconds
		if (Math.random() < 0.3) {
			spawnPowerUp();
		}
		powerupSpawnTimer = 0;
	}
	// AI for player 2 (only if alive)
	if (player2Lives > 0) {
		aiDecisionTimer++;
		if (aiCooldown > 0) {
			aiCooldown--;
		}
		// Make AI decisions every 30 frames (half second)
		if (aiDecisionTimer > 30) {
			aiDecisionTimer = 0;
			// Find closest target
			var closestTarget = findClosestTarget(player2);
			var distanceToClosest = closestTarget.distance;
			// Check for nearby powerups
			var nearestPowerup = null;
			var nearestPowerupDistance = Infinity;
			for (var i = 0; i < powerups.length; i++) {
				var powerup = powerups[i];
				var distance = Math.sqrt(Math.pow(powerup.x - player2.x, 2) + Math.pow(powerup.y - player2.y, 2));
				if (distance < nearestPowerupDistance) {
					nearestPowerupDistance = distance;
					nearestPowerup = powerup;
				}
			}
			// AI decision making
			if (aiCooldown === 0 && closestTarget.player) {
				if (distanceToClosest < 200 && Math.random() < 0.8) {
					// Attack if close to closest target
					aiAction = 'attack';
					aiCooldown = 60; // Attack cooldown
				} else if (nearestPowerup && nearestPowerupDistance < 300 && Math.random() < 0.3) {
					// Go for powerup if nearby (lower priority)
					aiAction = 'moveToPowerup';
					aiTargetX = nearestPowerup.x;
				} else if (Math.random() < 0.9) {
					// Chase closest target most of the time
					aiAction = 'moveToPlayer';
					aiTargetX = closestTarget.player.x;
				} else {
					// Random movement (rare)
					aiAction = 'randomMove';
					aiTargetX = 400 + Math.random() * 1248; // Random X within screen bounds
				}
			} else if (!closestTarget.player) {
				aiAction = 'idle';
			}
		}
		// Execute AI actions
		if (aiAction === 'attack' && closestTarget.player) {
			player2.attack(closestTarget.player.x, closestTarget.player.y);
			aiAction = 'idle';
		} else if (aiAction === 'moveToPowerup' || aiAction === 'moveToPlayer' || aiAction === 'randomMove') {
			// Move towards target
			var deltaX = aiTargetX - player2.x;
			if (Math.abs(deltaX) > 50) {
				player2.velocityX += deltaX * 0.2;
			}
			// Jump if target is above or if stuck
			if (aiAction === 'moveToPlayer' && closestTarget && closestTarget.player && closestTarget.player.y < player2.y - 100 || Math.abs(player2.velocityX) < 1 && player2.onGround && Math.random() < 0.1) {
				if (player2.jumpsRemaining > 0) {
					player2.velocityY = -player2.jumpPower;
					player2.jumpsRemaining--;
					player2.onGround = false;
					LK.getSound('jump').play();
				}
			}
			// Reset action if close enough to target
			if (Math.abs(deltaX) < 100) {
				aiAction = 'idle';
			}
		}
		// AI logic: double jump if can't reach player who is much higher
		var heightDifference = player2.y - player1.y;
		var horizontalDistance = Math.abs(player2.x - player1.x);
		if (heightDifference > 200 && horizontalDistance < 400 && player2.jumpsRemaining > 0) {
			// Check if AI is below player and perform double jump to reach them
			player2.velocityY = -player2.jumpPower;
			player2.jumpsRemaining--;
			player2.onGround = false;
			LK.getSound('jump').play();
		}
		// AI emergency jump if falling off platform
		if (player2.y > 1500 && player2.jumpsRemaining > 0) {
			player2.velocityY = -player2.jumpPower;
			player2.jumpsRemaining--;
			player2.onGround = false;
			LK.getSound('jump').play();
		}
	}
	// AI for player 3 (only if alive)
	if (player3Lives > 0) {
		ai3DecisionTimer++;
		if (ai3Cooldown > 0) {
			ai3Cooldown--;
		}
		if (ai3DecisionTimer > 45) {
			ai3DecisionTimer = 0;
			// Find closest target
			var closestTarget_3 = findClosestTarget(player3);
			var closestDistance_3 = closestTarget_3.distance;
			if (ai3Cooldown === 0 && closestTarget_3.player) {
				if (closestDistance_3 < 200 && Math.random() < 0.7) {
					ai3Action = 'attack';
					ai3Cooldown = 70;
				} else if (Math.random() < 0.8) {
					// Chase closest target most of the time
					ai3Action = 'moveToPlayer';
					ai3TargetX = closestTarget_3.player.x;
				} else if (Math.random() < 0.3) {
					ai3Action = 'randomMove';
					ai3TargetX = 400 + Math.random() * 1248;
				} else {
					ai3Action = 'idle';
				}
			} else if (!closestTarget_3.player) {
				ai3Action = 'idle';
			}
		}
		if (ai3Action === 'attack' && closestTarget_3.player) {
			player3.attack(closestTarget_3.player.x, closestTarget_3.player.y);
			ai3Action = 'idle';
		} else if (ai3Action === 'moveToPlayer' || ai3Action === 'randomMove') {
			var deltaX_3 = ai3TargetX - player3.x;
			if (Math.abs(deltaX_3) > 50) {
				player3.velocityX += deltaX_3 * 0.18;
			}
			if (Math.abs(deltaX_3) > 200 && player3.onGround && Math.random() < 0.15) {
				if (player3.jumpsRemaining > 0) {
					player3.velocityY = -player3.jumpPower;
					player3.jumpsRemaining--;
					player3.onGround = false;
					LK.getSound('jump').play();
				}
			}
			if (Math.abs(deltaX_3) < 100) {
				ai3Action = 'idle';
			}
		}
		if (player3.y > 1500 && player3.jumpsRemaining > 0) {
			player3.velocityY = -player3.jumpPower;
			player3.jumpsRemaining--;
			player3.onGround = false;
			LK.getSound('jump').play();
		}
	}
	// AI for player 4 (only if alive)
	if (player4Lives > 0) {
		ai4DecisionTimer++;
		if (ai4Cooldown > 0) {
			ai4Cooldown--;
		}
		if (ai4DecisionTimer > 35) {
			ai4DecisionTimer = 0;
			// Find closest target
			var closestTarget_4 = findClosestTarget(player4);
			var closestDistance_4 = closestTarget_4.distance;
			if (ai4Cooldown === 0 && closestTarget_4.player) {
				if (closestDistance_4 < 180 && Math.random() < 0.85) {
					ai4Action = 'attack';
					ai4Cooldown = 50;
				} else if (Math.random() < 0.9) {
					// Chase closest target aggressively
					ai4Action = 'moveToPlayer';
					ai4TargetX = closestTarget_4.player.x;
				} else if (Math.random() < 0.4) {
					ai4Action = 'randomMove';
					ai4TargetX = 400 + Math.random() * 1248;
				} else {
					ai4Action = 'idle';
				}
			} else if (!closestTarget_4.player) {
				ai4Action = 'idle';
			}
		}
		if (ai4Action === 'attack' && closestTarget_4.player) {
			player4.attack(closestTarget_4.player.x, closestTarget_4.player.y);
			ai4Action = 'idle';
		} else if (ai4Action === 'moveToPlayer' || ai4Action === 'randomMove') {
			var deltaX_4 = ai4TargetX - player4.x;
			if (Math.abs(deltaX_4) > 50) {
				player4.velocityX += deltaX_4 * 0.22;
			}
			if (Math.abs(deltaX_4) > 150 && player4.onGround && Math.random() < 0.2) {
				if (player4.jumpsRemaining > 0) {
					player4.velocityY = -player4.jumpPower;
					player4.jumpsRemaining--;
					player4.onGround = false;
					LK.getSound('jump').play();
				}
			}
			if (Math.abs(deltaX_4) < 100) {
				ai4Action = 'idle';
			}
		}
		if (player4.y > 1500 && player4.jumpsRemaining > 0) {
			player4.velocityY = -player4.jumpPower;
			player4.jumpsRemaining--;
			player4.onGround = false;
			LK.getSound('jump').play();
		}
	}
	// Update all fighters
	for (var i = fighters.length - 1; i >= 0; i--) {
		if (fighters[i] && !fighters[i].destroyed) {
			fighters[i].update();
		}
	}
	// Update all powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		if (powerups[i] && !powerups[i].destroyed) {
			powerups[i].update();
		}
	}
	// Update all smoke trails
	for (var i = smokeTrails.length - 1; i >= 0; i--) {
		if (smokeTrails[i] && !smokeTrails[i].destroyed) {
			smokeTrails[i].update();
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -237,8 +237,12 @@
 			if (self.x >= platformLeft && self.x <= platformRight && self.y >= platformTop - 20 && self.y <= platformBottom + 5 && self.velocityY >= 0) {
 				// Snap player to exact platform surface
 				self.y = platformTop;
 				self.velocityY = 0;
+				// Play landing sound if just landed (wasn't on ground before)
+				if (!wasOnGround) {
+					LK.getSound('landing').play();
+				}
 				self.onGround = true;
 				self.jumpsRemaining = 2; // Reset jumps when landing
 				break;
 			}
@@ -826,8 +830,9 @@
 		if (deltaY < -50 && draggedFighter.jumpsRemaining > 0) {
 			draggedFighter.velocityY = -draggedFighter.jumpPower;
 			draggedFighter.jumpsRemaining--;
 			draggedFighter.onGround = false;
+			LK.getSound('jump').play();
 		}
 	}
 };
 game.up = function (x, y, obj) {
@@ -888,8 +893,9 @@
 		if (jumpButtonPressed && player1.jumpsRemaining > 0) {
 			player1.velocityY = -player1.jumpPower;
 			player1.jumpsRemaining--;
 			player1.onGround = false;
+			LK.getSound('jump').play();
 			jumpButtonPressed = false; // Prevent continuous jumping
 		}
 		if (attackButtonPressed) {
 			player1.attack(player1.x, player1.y);
@@ -966,8 +972,9 @@
 				if (player2.jumpsRemaining > 0) {
 					player2.velocityY = -player2.jumpPower;
 					player2.jumpsRemaining--;
 					player2.onGround = false;
+					LK.getSound('jump').play();
 				}
 			}
 			// Reset action if close enough to target
 			if (Math.abs(deltaX) < 100) {
@@ -981,14 +988,16 @@
 			// Check if AI is below player and perform double jump to reach them
 			player2.velocityY = -player2.jumpPower;
 			player2.jumpsRemaining--;
 			player2.onGround = false;
+			LK.getSound('jump').play();
 		}
 		// AI emergency jump if falling off platform
 		if (player2.y > 1500 && player2.jumpsRemaining > 0) {
 			player2.velocityY = -player2.jumpPower;
 			player2.jumpsRemaining--;
 			player2.onGround = false;
+			LK.getSound('jump').play();
 		}
 	}
 	// AI for player 3 (only if alive)
 	if (player3Lives > 0) {
@@ -1031,8 +1040,9 @@
 				if (player3.jumpsRemaining > 0) {
 					player3.velocityY = -player3.jumpPower;
 					player3.jumpsRemaining--;
 					player3.onGround = false;
+					LK.getSound('jump').play();
 				}
 			}
 			if (Math.abs(deltaX_3) < 100) {
 				ai3Action = 'idle';
@@ -1041,8 +1051,9 @@
 		if (player3.y > 1500 && player3.jumpsRemaining > 0) {
 			player3.velocityY = -player3.jumpPower;
 			player3.jumpsRemaining--;
 			player3.onGround = false;
+			LK.getSound('jump').play();
 		}
 	}
 	// AI for player 4 (only if alive)
 	if (player4Lives > 0) {
@@ -1085,8 +1096,9 @@
 				if (player4.jumpsRemaining > 0) {
 					player4.velocityY = -player4.jumpPower;
 					player4.jumpsRemaining--;
 					player4.onGround = false;
+					LK.getSound('jump').play();
 				}
 			}
 			if (Math.abs(deltaX_4) < 100) {
 				ai4Action = 'idle';
@@ -1095,8 +1107,9 @@
 		if (player4.y > 1500 && player4.jumpsRemaining > 0) {
 			player4.velocityY = -player4.jumpPower;
 			player4.jumpsRemaining--;
 			player4.onGround = false;
+			LK.getSound('jump').play();
 		}
 	}
 	// Update all fighters
 	for (var i = fighters.length - 1; i >= 0; i--) {