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

/**** 
* Classes
****/ 
// EnemyBike class: faster enemy type
var EnemyBike = Container.expand(function () {
	var self = Container.call(this);
	// Attach enemyBike asset (image, facing upward)
	var bike = self.attachAsset('enemyBike', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set vertical speed (will be set on spawn)
	self.speedY = 24;
	// Track lastY for event triggers
	self.lastY = self.y;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speedY;
		// EnemyBike moves straight down in its lane
	};
	return self;
});
// Motorcycle class: player-controlled bike
var Motorcycle = Container.expand(function () {
	var self = Container.call(this);
	// Attach motorcycle asset (image, facing upward)
	var bike = self.attachAsset('motorcycle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set initial speed and direction
	self.speedY = 18; // vertical speed (track scrolls down)
	self.laneSpeed = 0; // horizontal speed (player control)
	self.maxX = 2048 - bike.width / 2;
	self.minX = bike.width / 2;
	// Track lastX for event triggers
	self.lastX = self.x;
	// Update method: move forward, apply lane movement
	self.update = function () {
		self.lastX = self.x;
		self.x += self.laneSpeed;
		// Clamp to track bounds
		if (self.x < self.minX) {
			self.x = self.minX;
		}
		if (self.x > self.maxX) {
			self.x = self.maxX;
		}
	};
	return self;
});
// Obstacle class: static/dynamic hazards
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	// Attach obstacle asset (box, red)
	var obs = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set vertical speed (scrolls with track)
	self.speedY = 18;
	// Track lastY for event triggers
	self.lastY = self.y;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speedY;
	};
	return self;
});
// PowerUp class: collectible items
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	// Attach powerup asset (ellipse, yellow)
	var pu = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedY = 18;
	self.lastY = self.y;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speedY;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Motorcycle asset (blue box)
// Obstacle asset (red box)
// PowerUp asset (yellow ellipse)
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
//Minimalistic tween library which should be used for animations over time, including tinting / colouring an object, scaling, rotating, or changing any game object property.
// --- Combo Counter ---
var comboCount = 0;
var comboText = new Text2('', {
	size: 20,
	fill: "#fff",
	font: "Arial, Helvetica, sans-serif"
});
comboText.anchor.set(1, 0); // Match scoreTxt anchor (right edge, top)
// Position comboText below scoreTxt, right-aligned, with spacing
comboText.visible = false;
// comboText.x and comboText.y will be set after scoreTxt is defined
// --- Katana Combo System ---
var katanaComboIndex = 0;
// --- Katana Combo Sound System ---
var katanaSounds = ["katanaslashsound", "katanaslash", "katanaslash1", "katanaslash2", "katanaslash3"];
// Track the currently playing katana sound instance
var currentKatanaSound = null;
function playKatanaComboSound() {
	if (Array.isArray(katanaSounds) && katanaSounds.length > 0) {
		// Use a unique sound channel for katanaSlash sounds
		var katanaChannel = "katanaComboChannel";
		// Stop any currently playing katana sound instance
		if (currentKatanaSound && typeof currentKatanaSound.stop === "function") {
			currentKatanaSound.stop();
		}
		var soundId = katanaSounds[katanaComboIndex];
		var sound = LK.getSound(soundId);
		if (sound && typeof sound.play === "function") {
			// Play the sound on the unique channel
			sound.play({
				channel: katanaChannel
			});
			currentKatanaSound = sound;
		} else {
			currentKatanaSound = null;
		}
		katanaComboIndex++;
		if (katanaComboIndex >= katanaSounds.length) {
			katanaComboIndex = 0;
		}
	}
}
// --- Road Background ---
// Motorcycle asset (blue box)
// Obstacle asset (red box)
// PowerUp asset (yellow ellipse)
// --- Game State ---
// Road background: gray
// (punchProjectile logic removed)
// Robust typeof helper for sandboxed environment (no Symbol polyfill issues)
// Robust typeof helper for sandboxed environment (no Symbol polyfill issues)
function _typeof9(o) {
	"@babel/helpers - typeof";
	return _typeof9 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof9(o);
}
function _typeof8(o) {
	"@babel/helpers - typeof";
	return _typeof8 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof8(o);
}
function _typeof7(o) {
	"@babel/helpers - typeof";
	return _typeof7 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof7(o);
}
function _typeof6(o) {
	"@babel/helpers - typeof";
	return _typeof6 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof6(o);
}
function _typeof5(o) {
	"@babel/helpers - typeof";
	return _typeof5 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof5(o);
}
function _typeof4(o) {
	// Robust typeof helper for sandboxed environment (no Symbol polyfill issues)
	if (o === null) {
		return "object";
	}
	var t = _typeof5(o);
	// Defensive: avoid TypeError if t is undefined or not a string
	if (typeof t === "undefined") {
		return "undefined";
	}
	if (typeof t !== "string") {
		return t;
	}
	// Defensive: avoid accessing t[0] if t is undefined, not a string, or empty
	if (!t || typeof t !== "string" || t.length === 0) {
		return t;
	}
	if (t[0] !== "o") {
		return t;
	}
	// Defensive: avoid accessing properties of undefined or null
	// No Symbol checks, just return "object" for objects/arrays
	return t;
}
function _typeof3(o) {
	// Robust typeof helper for sandboxed environment (no Symbol polyfill issues)
	if (o === null) {
		return "object";
	}
	var t = _typeof5(o);
	if (t !== "object") {
		return t;
	}
	// Array.isArray is always "object" in typeof
	return t;
}
function _typeof2(o) {
	// Only use native typeof, avoid Symbol checks for compatibility and sandbox errors
	// This is safe in all supported environments
	if (o === null) {
		return "object";
	}
	var t = _typeof5(o);
	if (t !== "object") {
		return t;
	}
	return t;
}
function _typeof(o) {
	return _typeof2(o);
}
var roadCenterX = 2048 / 2;
var roadBg1 = LK.getAsset('roadBg', {
	anchorX: 0.5,
	anchorY: 0,
	width: 1200,
	height: 2732,
	x: roadCenterX,
	y: 0
});
var roadBg2 = LK.getAsset('roadBg', {
	anchorX: 0.5,
	anchorY: 0,
	width: 1200,
	height: 2732,
	x: roadCenterX,
	y: -2732
});
// If the asset doesn't exist, create it as a gray box
if (!roadBg1) {
	roadBg1 = LK.getAsset('roadBg', {
		anchorX: 0.5,
		anchorY: 0,
		width: 1200,
		height: 2732,
		x: roadCenterX,
		y: 0
	});
	roadBg2 = LK.getAsset('roadBg', {
		anchorX: 0.5,
		anchorY: 0,
		width: 1200,
		height: 2732,
		x: roadCenterX,
		y: -2732
	});
}
game.addChild(roadBg1);
game.addChild(roadBg2);
// Lane definitions for 3-lane road (centered, full width 2048)
var laneCount = 3;
var laneWidth = 400;
var laneX = [2048 / 2 - laneWidth,
// left lane center
2048 / 2,
// center lane center
2048 / 2 + laneWidth // right lane center
];
// --- Lane Lines (dashed) ---
var laneLineContainers = [];
var laneLineCount = 2; // 2 lines between 3 lanes
var dashHeight = 80;
var dashGap = 80;
var lineWidth = 16;
var lineColor = 0xffffff;
var roadTop = 0;
var roadBottom = 2732;
var dashesPerLine = Math.ceil((roadBottom - roadTop) / (dashHeight + dashGap)) + 2;
for (var i = 0; i < laneLineCount; i++) {
	var lineContainer = new Container();
	var x = (laneX[i] + laneX[i + 1]) / 2;
	for (var d = 0; d < dashesPerLine; d++) {
		// Use the laneDash asset for white dashes
		var dash = LK.getAsset('laneDash', {
			width: lineWidth,
			height: dashHeight,
			anchorX: 0.5,
			anchorY: 0
		});
		dash.x = x;
		dash.y = roadTop + d * (dashHeight + dashGap);
		lineContainer.addChild(dash);
	}
	laneLineContainers.push(lineContainer);
	game.addChild(lineContainer);
}
var player = new Motorcycle();
player.x = 2048 / 2; // Center horizontally
player.y = 2732 - 220; // Place near bottom (220 is half the motorcycle height)
game.addChild(player);
// Defensive: always initialize arrays to avoid undefined/null errors
if (typeof obstacles === "undefined" || !obstacles || !Array.isArray(obstacles)) {
	var obstacles = [];
} else if (!Array.isArray(obstacles)) {
	obstacles = [];
}
if (typeof enemyBikes === "undefined" || !enemyBikes || !Array.isArray(enemyBikes)) {
	var enemyBikes = [];
} else if (!Array.isArray(enemyBikes)) {
	enemyBikes = [];
}
if (typeof powerups === "undefined" || !powerups || !Array.isArray(powerups)) {
	var powerups = [];
} else if (!Array.isArray(powerups)) {
	powerups = [];
}
// --- Score ---
var score = 0;
var distance = 0;
// --- Health ---
var playerHealth = 3;
var maxPlayerHealth = 3;
// Container for tire icons
var healthIcons = new Container();
healthIcons.x = 110;
healthIcons.y = 0;
LK.gui.top.addChild(healthIcons);
// Helper to update tire icons
function updateHealthIcons() {
	// Remove all previous icons
	while (healthIcons.children.length > 0) {
		var c = healthIcons.children.pop();
		if (c && typeof c.destroy === "function") {
			c.destroy();
		}
	}
	// Add one tire icon per health
	for (var h = 0; h < playerHealth; h++) {
		var tire = LK.getAsset('tireIcon', {
			anchorX: 0,
			anchorY: 0,
			width: 90,
			height: 90
		});
		tire.x = h * 100;
		tire.y = 10;
		healthIcons.addChild(tire);
	}
}
updateHealthIcons();
// Score display
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
// Anchor to the right edge, top (1, 0)
scoreTxt.anchor.set(1, 0);
// Add to top-right GUI overlay
LK.gui.topRight.addChild(scoreTxt);
// Now that scoreTxt is defined, set comboText position and add to GUI if not already present
comboText.x = scoreTxt.x; // Align x with scoreTxt (right edge)
comboText.y = scoreTxt.y + scoreTxt.height + 10; // 10px below score display
if (!comboText.parent) {
	LK.gui.topRight.addChild(comboText);
}
// (Punch button removed)
// Touch drag to steer
var dragActive = false;
var dragOffsetX = 0;
game.down = function (x, y, obj) {
	// (Punch logic on right half tap removed)
	// Only start drag if touch is near the player
	var dx = x - player.x;
	var dy = y - player.y;
	if (dx * dx + dy * dy < 300 * 300) {
		dragActive = true;
		dragOffsetX = player.x - x;
	}
};
game.move = function (x, y, obj) {
	if (dragActive) {
		player.x = x + dragOffsetX;
	}
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// --- Spawning logic ---
var obstacleTimer = 0;
var powerupTimer = 0;
// --- Difficulty scaling ---
var enemyBaseSpeed = 24; // initial EnemyBike speed
var enemySpeed = enemyBaseSpeed;
var enemyBaseSpawnInterval = 40; // initial spawn interval (frames)
var enemySpawnInterval = enemyBaseSpawnInterval;
var difficultyTimer = 0; // counts frames for difficulty increase
var difficultyInterval = 600; // every 600 frames (~10s at 60fps), increase difficulty
var enemySpeedIncrement = 2; // how much to increase speed each interval
var enemySpawnDecrement = 4; // how much to decrease spawn interval each interval (minimum capped)
var minEnemySpawnInterval = 12; // minimum allowed spawn interval
// --- KatanaSlash Melee System ---
var katanaSlashCooldown = 0; // frames until next slash (120 frames = 2s at 60fps)
var katanaSlashRadius = 200; // px radius for melee
// --- Main update loop ---
game.update = function () {
	// Scroll road background downward to simulate forward motion
	roadBg1.y += player.speedY;
	roadBg2.y += player.speedY;
	// Loop backgrounds
	if (roadBg1.y >= 2732) {
		roadBg1.y = roadBg2.y - 2732;
	}
	if (roadBg2.y >= 2732) {
		roadBg2.y = roadBg1.y - 2732;
	}
	// Scroll and loop lane lines downward
	for (var i = 0; i < laneLineContainers.length; i++) {
		var lineContainer = laneLineContainers[i];
		for (var j = 0; j < lineContainer.children.length; j++) {
			var dash = lineContainer.children[j];
			dash.y += player.speedY;
			if (dash.y > 2732) {
				dash.y -= (dashHeight + dashGap) * lineContainer.children.length;
				// This ensures the dash loops back to the top
			}
		}
	}
	// Move player (handled in class)
	player.update();
	// Scroll obstacles and powerups
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove if off screen
		if (obs.lastY < 2732 && obs.y >= 2732 + 100) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision detection (trigger on first intersect)
		if (!obs.lastWasIntersecting && obs.intersects(player)) {
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			return;
		}
		obs.lastWasIntersecting = obs.intersects(player);
	}
	// Handle enemyBikes
	for (var i = enemyBikes.length - 1; i >= 0; i--) {
		var eb = enemyBikes[i];
		eb.update();
		// Remove if off screen
		if (eb.lastY < 2732 && eb.y >= 2732 + 100) {
			eb.destroy();
			enemyBikes.splice(i, 1);
			continue;
		}
		// Collision detection (trigger on first intersect)
		if (!eb.lastWasIntersecting && eb.intersects(player)) {
			LK.effects.flashScreen(0xff0000, 800);
			playerHealth--;
			// Reset combo on collision with enemyBike
			comboCount = 0;
			comboText.setText(""); // Clear text when combo resets
			comboText.visible = false;
			if (comboText.parent) {
				comboText.parent.removeChild(comboText);
			}
			// Update health icon display
			updateHealthIcons();
			if (playerHealth <= 0) {
				LK.showGameOver();
				return;
			}
		}
		eb.lastWasIntersecting = eb.intersects(player);
		// (auto-punch logic removed)
	}
	for (var i = powerups.length - 1; i >= 0; i--) {
		var pu = powerups[i];
		pu.update();
		// Remove if off screen
		if (pu.lastY < 2732 && pu.y >= 2732 + 100) {
			pu.destroy();
			powerups.splice(i, 1);
			continue;
		}
		// Collect powerup
		if (!pu.lastWasIntersecting && pu.intersects(player)) {
			score += 10;
			scoreTxt.setText(score);
			pu.destroy();
			powerups.splice(i, 1);
			continue;
		}
		pu.lastWasIntersecting = pu.intersects(player);
	}
	// --- Difficulty scaling ---
	difficultyTimer++;
	if (difficultyTimer >= difficultyInterval) {
		difficultyTimer = 0;
		// Increase enemy speed
		enemySpeed += enemySpeedIncrement;
		// Decrease spawn interval, but not below minimum
		enemySpawnInterval -= enemySpawnDecrement;
		if (enemySpawnInterval < minEnemySpawnInterval) {
			enemySpawnInterval = minEnemySpawnInterval;
		}
	}
	// --- Spawning ---
	obstacleTimer++;
	if (obstacleTimer > enemySpawnInterval) {
		obstacleTimer = 0;
		// Randomly decide to spawn an Obstacle or an EnemyBike (e.g. 70% car, 30% enemyBike)
		if (Math.random() < 0.3) {
			var laneIdx = Math.floor(Math.random() * laneCount);
			var eb = new EnemyBike();
			eb.laneIdx = laneIdx; // Store lane index for reference
			eb.x = laneX[laneIdx];
			eb.y = -100;
			eb.lastWasIntersecting = false;
			eb.speedY = enemySpeed; // Set current enemy speed
			game.addChild(eb);
			enemyBikes.push(eb);
		} else {
			var obs = new Obstacle();
			// Place obstacle in a random lane
			var laneIdx = Math.floor(Math.random() * laneCount);
			obs.x = laneX[laneIdx];
			obs.y = -100;
			obs.lastWasIntersecting = false;
			game.addChild(obs);
			obstacles.push(obs);
		}
	}
	powerupTimer++;
	if (powerupTimer > 120) {
		powerupTimer = 0;
		var pu = new PowerUp();
		// Place powerup in a random lane
		var laneIdx = Math.floor(Math.random() * laneCount);
		pu.x = laneX[laneIdx];
		pu.y = -100;
		pu.lastWasIntersecting = false;
		game.addChild(pu);
		powerups.push(pu);
	}
	// --- KatanaSlash Melee System ---
	// Instantly destroy any enemyBike within katanaSlashRadius of the player and show a glowing red beam effect
	var katanaHit = false;
	for (var i = enemyBikes.length - 1; i >= 0; i--) {
		var eb = enemyBikes[i];
		var dx = eb.x - player.x;
		var dy = eb.y - player.y;
		if (dx * dx + dy * dy <= katanaSlashRadius * katanaSlashRadius) {
			katanaHit = true;
			// Draw a katana sprite image between player and enemyBike
			var length = Math.sqrt(dx * dx + dy * dy);
			var angle = Math.atan2(dy, dx);
			// Play katana slash sound
			var katanaSlashSound = LK.getSound('katanaslashsound');
			if (katanaSlashSound && typeof katanaSlashSound.play === "function") {
				katanaSlashSound.play();
			}
			// Use a katana image asset (ensure it's initialized in Assets section)
			var katana = LK.getAsset('katana', {
				anchorX: 0,
				// start of blade at player
				anchorY: 0.5
			});
			katana.x = player.x + 30;
			katana.y = player.y - 20;
			katana.rotation = angle;
			// Scale katana to match the distance between player and enemyBike
			// Use katana's original width for scaling
			if (katana.width > 0) {
				katana.scaleX = length / katana.width;
			} else {
				katana.scaleX = 1;
			}
			katana.scaleY = 1.0; // keep blade thickness
			katana.alpha = 0.92;
			game.addChild(katana);
			// Remove katana after 200ms
			(function (k) {
				var timeoutId = LK.setTimeout(function () {
					if (k && typeof k.destroy === "function") {
						k.destroy();
					}
				}, 200);
			})(katana);
			eb.destroy();
			enemyBikes.splice(i, 1);
			comboCount++;
			comboText.setText("Combo! " + comboCount);
			if (comboCount > 0) {
				comboText.visible = true;
				// Update position and parent to be below scoreTxt, right-aligned
				comboText.anchor.set(1, 0);
				comboText.x = scoreTxt.x;
				comboText.y = scoreTxt.y + scoreTxt.height + 10;
				if (comboText.parent !== LK.gui.topRight) {
					if (comboText.parent) {
						comboText.parent.removeChild(comboText);
					}
					LK.gui.topRight.addChild(comboText);
				}
			} else {
				comboText.visible = false;
			}
			playKatanaComboSound();
		}
	}
	// If katanaSlash missed (no enemy in range), reset combo
	if (!katanaHit && comboCount > 0) {
		comboCount = 0;
		comboText.setText(""); // Clear text when combo resets
		comboText.visible = false;
		if (comboText.parent) {
			comboText.parent.removeChild(comboText);
		}
	}
	// --- Distance/score ---
	distance += player.speedY;
	if (distance % 1000 < player.speedY) {
		score += 1;
		scoreTxt.setText(score);
	}
	// Win condition: reach distance
	if (distance > 20000) {
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -112,14 +112,9 @@
 });
 comboText.anchor.set(1, 0); // Match scoreTxt anchor (right edge, top)
 // Position comboText below scoreTxt, right-aligned, with spacing
 comboText.visible = false;
-comboText.x = scoreTxt.x; // Align x with scoreTxt (right edge)
-comboText.y = scoreTxt.y + scoreTxt.height + 10; // 10px below score display
-// Only add to GUI if not already present
-if (!comboText.parent) {
-	LK.gui.topRight.addChild(comboText);
-}
+// comboText.x and comboText.y will be set after scoreTxt is defined
 // --- Katana Combo System ---
 var katanaComboIndex = 0;
 // --- Katana Combo Sound System ---
 var katanaSounds = ["katanaslashsound", "katanaslash", "katanaslash1", "katanaslash2", "katanaslash3"];
@@ -387,8 +382,14 @@
 // Anchor to the right edge, top (1, 0)
 scoreTxt.anchor.set(1, 0);
 // Add to top-right GUI overlay
 LK.gui.topRight.addChild(scoreTxt);
+// Now that scoreTxt is defined, set comboText position and add to GUI if not already present
+comboText.x = scoreTxt.x; // Align x with scoreTxt (right edge)
+comboText.y = scoreTxt.y + scoreTxt.height + 10; // 10px below score display
+if (!comboText.parent) {
+	LK.gui.topRight.addChild(comboText);
+}
 // (Punch button removed)
 // Touch drag to steer
 var dragActive = false;
 var dragOffsetX = 0;