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

/**** 
* Classes
****/ 
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGfx = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.hp = 1;
	self.x = 600;
	self.y = 2732 / 2;
	self.isAlive = true;
	// Animate enemy in
	self.spawnAnim = function () {
		self.scaleX = 0.5;
		self.scaleY = 0.5;
		tween(self, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 180,
			easing: tween.bounceOut
		});
	};
	// Animate enemy defeat
	self.defeatAnim = function (onFinish) {
		tween(self, {
			alpha: 0,
			scaleX: 1.3,
			scaleY: 1.3
		}, {
			duration: 180,
			easing: tween.easeIn,
			onFinish: onFinish
		});
	};
	return self;
});
// Gold class
var Gold = Container.expand(function () {
	var self = Container.call(this);
	var goldGfx = self.attachAsset('gold', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = 600;
	self.y = 2732 / 2;
	// Animate gold drop
	self.dropAnim = function (targetX, targetY, onFinish) {
		tween(self, {
			y: targetY
		}, {
			duration: 350,
			easing: tween.bounceOut,
			onFinish: onFinish
		});
	};
	// Animate gold collect
	self.collectAnim = function (targetX, targetY, onFinish) {
		tween(self, {
			x: targetX,
			y: targetY,
			scaleX: 0.3,
			scaleY: 0.3,
			alpha: 0
		}, {
			duration: 320,
			easing: tween.cubicIn,
			onFinish: onFinish
		});
	};
	return self;
});
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGfx = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.level = 1;
	self.x = 200;
	self.y = 2732 / 2;
	// For upgrade animation
	self.flashUpgrade = function () {
		tween(self, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 120,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 120,
					easing: tween.easeIn
				});
			}
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222a36
});

/**** 
* Game Code
****/ 
// Upgrade Button: orange box
// Spawn Enemy Button: green box
// Gold: yellow ellipse
// Enemy: blue ellipse
// Hero: red box, left side
// --- Global State ---
var hero = new Hero();
game.addChild(hero);
var currentEnemy = null;
var golds = [];
var goldAmount = 0;
var heroLevel = 1;
// --- GUI Elements ---
// Gold display (top right)
var goldTxt = new Text2('0', {
	size: 100,
	fill: 0xFFE066
});
goldTxt.anchor.set(1, 0); // right, top
LK.gui.topRight.addChild(goldTxt);
// Upgrade button (top center)
var upgradeBtn = LK.getAsset('upgradeBtn', {
	anchorX: 0.5,
	anchorY: 0.5
});
// Place upgradeBtn at top center, but not in the top left 100x100 area
var upgradeBtnY = 100 + upgradeBtn.height / 2;
upgradeBtn.x = 2048 / 2;
upgradeBtn.y = upgradeBtnY;
LK.gui.top.addChild(upgradeBtn);
var upgradeTxt = new Text2('Upgrade\nLvl: 1', {
	size: 60,
	fill: "#fff"
});
upgradeTxt.anchor.set(0.5, 0.5);
upgradeTxt.x = upgradeBtn.x;
upgradeTxt.y = upgradeBtn.y;
LK.gui.top.addChild(upgradeTxt);
// Spawn enemy button (bottom center)
var spawnBtn = LK.getAsset('spawnBtn', {
	anchorX: 0.5,
	anchorY: 0.5
});
// Place spawnBtn at bottom center, above the very bottom edge
var spawnBtnY = 2732 - 100 - spawnBtn.height / 2;
spawnBtn.x = 2048 / 2;
spawnBtn.y = spawnBtnY;
LK.gui.bottom.addChild(spawnBtn);
var spawnTxt = new Text2('Spawn Enemy', {
	size: 60,
	fill: "#fff"
});
spawnTxt.anchor.set(0.5, 0.5);
spawnTxt.x = spawnBtn.x;
spawnTxt.y = spawnBtn.y;
LK.gui.bottom.addChild(spawnTxt);
// --- Helper Functions ---
function updateGoldDisplay() {
	goldTxt.setText(goldAmount);
}
function updateUpgradeDisplay() {
	upgradeTxt.setText('Upgrade\nLvl: ' + heroLevel);
}
// --- Game Logic ---
// Spawn enemy logic
function spawnEnemy() {
	if (currentEnemy && currentEnemy.isAlive) return; // Only one at a time
	var enemy = new Enemy();
	// Place enemy in front of hero, vertically aligned
	enemy.x = hero.x + 320;
	enemy.y = hero.y;
	enemy.hp = heroLevel; // Enemy HP scales with hero level
	enemy.isAlive = true;
	enemy.spawnAnim();
	game.addChild(enemy);
	currentEnemy = enemy;
}
// Defeat enemy logic
function defeatEnemy() {
	if (!currentEnemy || !currentEnemy.isAlive) return;
	currentEnemy.isAlive = false;
	currentEnemy.defeatAnim(function () {
		if (currentEnemy) {
			currentEnemy.destroy();
			currentEnemy = null;
		}
	});
	// Drop gold
	var gold = new Gold();
	gold.x = hero.x + 320;
	gold.y = hero.y;
	gold.scaleX = 1;
	gold.scaleY = 1;
	gold.alpha = 1;
	game.addChild(gold);
	golds.push(gold);
	// Drop to random y near enemy
	var dropY = gold.y + (Math.random() * 120 - 60);
	gold.dropAnim(gold.x, dropY, function () {});
}
// Collect gold logic
function collectGold(gold) {
	// Animate to gold display
	var guiGoldPos = LK.gui.topRight.toLocal(gold.toGlobal({
		x: 0,
		y: 0
	}));
	goldAmount += 1;
	updateGoldDisplay();
	gold.collectAnim(guiGoldPos.x, guiGoldPos.y, function () {
		gold.destroy();
	});
}
// Upgrade logic
function upgradeHero() {
	var upgradeCost = heroLevel * 5;
	if (goldAmount < upgradeCost) {
		// Flash gold text red
		tween(goldTxt, {
			tint: 0xff4444
		}, {
			duration: 120,
			onFinish: function onFinish() {
				tween(goldTxt, {
					tint: 0xFFE066
				}, {
					duration: 120
				});
			}
		});
		return;
	}
	goldAmount -= upgradeCost;
	heroLevel += 1;
	hero.level = heroLevel;
	updateGoldDisplay();
	updateUpgradeDisplay();
	hero.flashUpgrade();
}
// --- Event Handlers ---
// Spawn button tap
spawnBtn.down = function (x, y, obj) {
	spawnEnemy();
};
// Enemy tap (defeat)
function onEnemyDown(x, y, obj) {
	if (!currentEnemy || !currentEnemy.isAlive) return;
	currentEnemy.hp -= 1;
	// Flash enemy
	tween(currentEnemy, {
		tint: 0xffffff
	}, {
		duration: 60,
		onFinish: function onFinish() {
			tween(currentEnemy, {
				tint: 0x2a6bde
			}, {
				duration: 60
			});
		}
	});
	if (currentEnemy.hp <= 0) {
		defeatEnemy();
	}
}
// Gold tap (collect)
function onGoldDown(x, y, obj) {
	for (var i = golds.length - 1; i >= 0; i--) {
		var gold = golds[i];
		if (gold && gold.containsPoint && gold.containsPoint({
			x: x,
			y: y
		})) {
			collectGold(gold);
			golds.splice(i, 1);
			break;
		}
	}
}
// Upgrade button tap
upgradeBtn.down = function (x, y, obj) {
	upgradeHero();
};
// --- Attach event handlers to game ---
game.down = function (x, y, obj) {
	// Check if tap is on enemy
	if (currentEnemy && currentEnemy.isAlive && currentEnemy.containsPoint && currentEnemy.containsPoint({
		x: x,
		y: y
	})) {
		onEnemyDown(x, y, obj);
		return;
	}
	// Check if tap is on any gold
	for (var i = golds.length - 1; i >= 0; i--) {
		var gold = golds[i];
		if (gold && gold.containsPoint && gold.containsPoint({
			x: x,
			y: y
		})) {
			collectGold(gold);
			golds.splice(i, 1);
			return;
		}
	}
	// (Buttons handled by their own .down)
};
// --- Game update loop ---
game.update = function () {
	// Remove golds that are invisible
	for (var i = golds.length - 1; i >= 0; i--) {
		var gold = golds[i];
		if (gold.alpha <= 0.01) {
			gold.destroy();
			golds.splice(i, 1);
		}
	}
	// Keep hero vertically centered
	hero.y = 2732 / 2;
	// Keep enemy vertically centered if alive
	if (currentEnemy && currentEnemy.isAlive) {
		currentEnemy.y = hero.y;
	}
};
// --- Initial UI state ---
updateGoldDisplay();
updateUpgradeDisplay();

===================================================================
--- original.js
+++ change.js
@@ -144,8 +144,9 @@
 var upgradeBtn = LK.getAsset('upgradeBtn', {
 	anchorX: 0.5,
 	anchorY: 0.5
 });
+// Place upgradeBtn at top center, but not in the top left 100x100 area
 var upgradeBtnY = 100 + upgradeBtn.height / 2;
 upgradeBtn.x = 2048 / 2;
 upgradeBtn.y = upgradeBtnY;
 LK.gui.top.addChild(upgradeBtn);
@@ -161,8 +162,9 @@
 var spawnBtn = LK.getAsset('spawnBtn', {
 	anchorX: 0.5,
 	anchorY: 0.5
 });
+// Place spawnBtn at bottom center, above the very bottom edge
 var spawnBtnY = 2732 - 100 - spawnBtn.height / 2;
 spawnBtn.x = 2048 / 2;
 spawnBtn.y = spawnBtnY;
 LK.gui.bottom.addChild(spawnBtn);