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

/**** 
* Classes
****/ 
// Enemy class: Moves in a pattern, can be destroyed
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	// Attach enemy asset (green ellipse, 100x100)
	var enemyGfx = self.attachAsset('enemyEllipse', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set size for collision
	self.width = enemyGfx.width;
	self.height = enemyGfx.height;
	// Enemy type: 0 = straight, 1 = zigzag, 2 = fast
	self.type = 0;
	self.speed = 6;
	self.zigzagDir = 1;
	self.zigzagStep = 0;
	// For tracking last position for off-screen detection
	self.lastY = self.y;
	// For tracking intersection with hero
	self.lastIntersecting = false;
	// For zigzag
	self.baseX = 0;
	// Set movement pattern
	self.setType = function (type) {
		self.type = type;
		if (type === 0) {
			self.speed = 6 + Math.floor(LK.getScore() / 10);
		} else if (type === 1) {
			self.speed = 5 + Math.floor(LK.getScore() / 10);
			self.zigzagDir = Math.random() > 0.5 ? 1 : -1;
			self.zigzagStep = 0;
			self.baseX = self.x;
		} else if (type === 2) {
			self.speed = 10 + Math.floor(LK.getScore() / 10);
		}
	};
	// Update movement
	self.update = function () {
		// Move toward the hero's (kalp) current position, speed increases with score
		if (typeof hero !== "undefined" && hero !== null) {
			// Calculate direction vector from enemy to hero
			var dx = hero.x - self.x;
			var dy = hero.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			// If very close to hero but not colliding, enemy can "miss" and move past
			var missRadius = hero.width / 2 + self.width / 2 + 30; // 30px buffer for "miss"
			if (dist < missRadius && !self.intersects(hero)) {
				// Enemy missed the hero, move enemy off screen and mark for removal
				self.y = 2732 + 200; // Move enemy far below screen to trigger removal
			} else if (dist > 0) {
				// Increase speed as score increases
				var speedMultiplier = 1 + (typeof LK !== "undefined" ? Math.min(LK.getScore(), 40) / 30 : 0); // up to ~2.33x at 40+ score
				var step = Math.min(self.speed * speedMultiplier, dist);
				self.x += dx / dist * step * 0.18;
				self.y += dy / dist * step * 0.18;
			}
		}
	};
	return self;
});
// Hero class: Player's character, draggable
var Hero = Container.expand(function () {
	var self = Container.call(this);
	// Attach hero asset (red box, 120x120)
	var heroGfx = self.attachAsset('heroBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set size for collision
	self.width = heroGfx.width;
	self.height = heroGfx.height;
	// For possible future use
	self.update = function () {};
	// Down event for possible feedback
	self.down = function (x, y, obj) {};
	// Up event for possible feedback
	self.up = function (x, y, obj) {};
	return self;
});
// Player attack class: short range, destroys enemy on contact
var HeroAttack = Container.expand(function () {
	var self = Container.call(this);
	// Attach attack asset (yellow box, 80x80)
	var atkGfx = self.attachAsset('attackBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = atkGfx.width;
	self.height = atkGfx.height;
	// For tracking
	self.lastIntersecting = false;
	// Attack duration
	self.lifetime = 18; // ~0.3s at 60fps
	self.update = function () {
		self.lifetime--;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181c2c
});

/**** 
* Game Code
****/ 
// Undertale music (replace 'undertale_theme' with actual asset id if needed)
// --- Game Variables ---
// Tween plugin for enemy/hero animations
// --- Asset Initialization ---
var hero = null;
var enemies = [];
var attacks = [];
var dragNode = null;
var lastHeroIntersecting = false;
var spawnInterval = 60; // frames between spawns, will decrease
var spawnTick = 0;
var scoreTxt = null;
var canAttack = true;
var attackCooldown = 24; // frames
var attackCooldownTick = 0;
var winScore = 20;
// --- Score Display ---
scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Play Undertale music at game start
LK.playMusic('undertale_theme');
// --- Hero Initialization ---
hero = new Hero();
hero.x = 2048 / 2;
hero.y = 2732 - 350;
game.addChild(hero);
// --- Touch/Drag Controls ---
function handleMove(x, y, obj) {
	if (dragNode) {
		// Clamp hero inside game area (with margin)
		var margin = 80;
		var nx = Math.max(margin, Math.min(2048 - margin, x));
		var ny = Math.max(300, Math.min(2732 - margin, y));
		dragNode.x = nx;
		dragNode.y = ny;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	// Only allow drag if touch is on hero
	var dx = x - hero.x;
	var dy = y - hero.y;
	var dist = Math.sqrt(dx * dx + dy * dy);
	if (dist < hero.width / 1.2) {
		dragNode = hero;
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// --- Attack on Tap (anywhere except top 200px) ---
game.tap = function (x, y, obj) {
	if (y > 200 && canAttack) {
		spawnAttack();
	}
};
// Since LK does not have tap, simulate with up event if not dragging
game.up = function (x, y, obj) {
	if (!dragNode && y > 200 && canAttack) {
		spawnAttack();
	}
	dragNode = null;
};
// --- Attack Logic ---
function spawnAttack() {
	// Only one attack at a time
	if (!canAttack) return;
	canAttack = false;
	attackCooldownTick = attackCooldown;
	var atk = new HeroAttack();
	atk.x = hero.x;
	atk.y = hero.y - hero.height / 2 - atk.height / 2;
	attacks.push(atk);
	game.addChild(atk);
	// Animate attack (scale up then fade)
	atk.scaleX = 0.7;
	atk.scaleY = 0.7;
	tween(atk, {
		scaleX: 1.2,
		scaleY: 1.2
	}, {
		duration: 120,
		easing: tween.easeOut
	});
	tween(atk, {
		alpha: 0
	}, {
		duration: 180,
		easing: tween.linear,
		onFinish: function onFinish() {}
	});
}
// --- Enemy Spawning ---
function spawnEnemy() {
	var enemy = new Enemy();
	// Random x, avoid edges
	var margin = 120;
	enemy.x = margin + Math.random() * (2048 - 2 * margin);
	enemy.y = -100;
	// Random type, more types as score increases
	var type = 0;
	var s = LK.getScore();
	if (s < 5) {
		type = 0;
	} else if (s < 12) {
		type = Math.random() < 0.7 ? 0 : 1;
	} else {
		var r = Math.random();
		if (r < 0.5) type = 0;else if (r < 0.8) type = 1;else type = 2;
	}
	enemy.setType(type);
	enemies.push(enemy);
	game.addChild(enemy);
}
// --- Main Game Update ---
game.update = function () {
	// --- Attack cooldown ---
	if (!canAttack) {
		attackCooldownTick--;
		if (attackCooldownTick <= 0) {
			canAttack = true;
		}
	}
	// --- Spawn enemies ---
	spawnTick++;
	var s = LK.getScore();
	// Decrease interval as score increases
	var minInterval = 24;
	spawnInterval = Math.max(minInterval, 60 - Math.floor(s / 2) * 4);
	if (spawnTick >= spawnInterval) {
		spawnTick = 0;
		spawnEnemy();
	}
	// --- Update enemies ---
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		enemy.update();
		// Off-screen detection
		if (enemy.lastY < 2732 + 100 && enemy.y >= 2732 + 100) {
			// Enemy left screen, destroy
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		enemy.lastY = enemy.y;
		// Collision with hero
		var currIntersect = enemy.intersects(hero);
		if (!enemy.lastIntersecting && currIntersect) {
			// Hit! Game over
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			return;
		}
		enemy.lastIntersecting = currIntersect;
	}
	// --- Update attacks ---
	for (var j = attacks.length - 1; j >= 0; j--) {
		var atk = attacks[j];
		atk.update();
		// Remove if expired
		if (atk.lifetime <= 0) {
			atk.destroy();
			attacks.splice(j, 1);
			continue;
		}
		// Check collision with enemies
		for (var k = enemies.length - 1; k >= 0; k--) {
			var enemy = enemies[k];
			var currAtkIntersect = atk.intersects(enemy);
			if (!atk.lastIntersecting && currAtkIntersect) {
				// Destroy enemy
				enemy.destroy();
				enemies.splice(k, 1);
				// Score up
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore());
				// Win check
				if (LK.getScore() >= winScore) {
					LK.effects.flashScreen(0x00ff00, 800);
					LK.showYouWin();
					return;
				}
				// Flash effect on attack
				LK.effects.flashObject(atk, 0xffff00, 200);
				// Remove attack (one hit per attack)
				atk.destroy();
				attacks.splice(j, 1);
				break;
			}
			atk.lastIntersecting = currAtkIntersect;
		}
	}
};
// --- Prevent elements in top left 100x100 (menu area) ---
// --- End of Game Code ---

===================================================================
--- original.js
+++ change.js
@@ -43,9 +43,9 @@
 		}
 	};
 	// Update movement
 	self.update = function () {
-		// Move slowly toward the hero's (kalp) current position
+		// Move toward the hero's (kalp) current position, speed increases with score
 		if (typeof hero !== "undefined" && hero !== null) {
 			// Calculate direction vector from enemy to hero
 			var dx = hero.x - self.x;
 			var dy = hero.y - self.y;
@@ -55,11 +55,12 @@
 			if (dist < missRadius && !self.intersects(hero)) {
 				// Enemy missed the hero, move enemy off screen and mark for removal
 				self.y = 2732 + 200; // Move enemy far below screen to trigger removal
 			} else if (dist > 0) {
-				// Normalize and move a small step toward hero
-				var step = Math.min(self.speed, dist);
-				self.x += dx / dist * step * 0.18; // 0.18: slow, tweak for difficulty
+				// Increase speed as score increases
+				var speedMultiplier = 1 + (typeof LK !== "undefined" ? Math.min(LK.getScore(), 40) / 30 : 0); // up to ~2.33x at 40+ score
+				var step = Math.min(self.speed * speedMultiplier, dist);
+				self.x += dx / dist * step * 0.18;
 				self.y += dy / dist * step * 0.18;
 			}
 		}
 	};