/**** 
* Classes
****/ 
// Gold class: falling collectible
var Gold = Container.expand(function () {
	var self = Container.call(this);
	var goldAsset = self.attachAsset('gold', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10 + Math.random() * 8; // randomize speed a bit
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});
// Miner class: player character
var Miner = Container.expand(function () {
	var self = Container.call(this);
	var minerAsset = self.attachAsset('miner', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {};
	return self;
});
// Game variables
// Rock class: falling obstacle
var Rock = Container.expand(function () {
	var self = Container.call(this);
	var rockAsset = self.attachAsset('rock', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 12 + Math.random() * 8;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Game variables
var miner = new Miner();
var golds = [];
var rocks = [];
var score = 0;
var lives = 3;
var lastGoldSpawn = 0;
var lastRockSpawn = 0;
var goldSpawnInterval = 60; // frames
var rockSpawnInterval = 90; // frames
// Add miner to game, position at bottom center
game.addChild(miner);
miner.x = 2048 / 2;
miner.y = 2732 - 180;
// Score and lives display
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFD700
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var livesTxt = new Text2('❤❤❤', {
	size: 100,
	fill: 0xFF4444
});
livesTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(livesTxt);
// Dragging logic
var dragging = false;
game.down = function (x, y, obj) {
	// Only allow drag if touch is on miner or below
	if (y > miner.y - 120) {
		dragging = true;
		miner.x = Math.max(80, Math.min(2048 - 80, x));
	}
};
game.move = function (x, y, obj) {
	if (dragging) {
		miner.x = Math.max(80, Math.min(2048 - 80, x));
	}
};
game.up = function (x, y, obj) {
	dragging = false;
};
// Update function: spawn, move, check collisions
game.update = function () {
	// Spawn gold
	if (LK.ticks - lastGoldSpawn > goldSpawnInterval) {
		var g = new Gold();
		g.x = 120 + Math.random() * (2048 - 240);
		g.y = -80;
		g.lastY = g.y;
		golds.push(g);
		game.addChild(g);
		lastGoldSpawn = LK.ticks;
	}
	// Spawn rocks
	if (LK.ticks - lastRockSpawn > rockSpawnInterval) {
		var r = new Rock();
		r.x = 120 + Math.random() * (2048 - 240);
		r.y = -80;
		r.lastY = r.y;
		rocks.push(r);
		game.addChild(r);
		lastRockSpawn = LK.ticks;
	}
	// Update golds
	for (var i = golds.length - 1; i >= 0; i--) {
		var g = golds[i];
		g.update();
		// Check if caught by miner
		if (!g.caught && g.lastY < miner.y - 40 && g.y >= miner.y - 40 && Math.abs(g.x - miner.x) < 120) {
			g.caught = true;
			score += 1;
			scoreTxt.setText(score);
			g.destroy();
			golds.splice(i, 1);
			continue;
		}
		// Missed gold (falls below screen)
		if (g.y > 2732 + 80) {
			g.destroy();
			golds.splice(i, 1);
			lives -= 1;
			updateLives();
			if (lives <= 0) {
				LK.showGameOver();
				return;
			}
		}
	}
	// Update rocks
	for (var j = rocks.length - 1; j >= 0; j--) {
		var r = rocks[j];
		r.update();
		// Hit by miner
		if (!r.hit && r.lastY < miner.y - 40 && r.y >= miner.y - 40 && Math.abs(r.x - miner.x) < 120) {
			r.hit = true;
			lives -= 1;
			updateLives();
			r.destroy();
			rocks.splice(j, 1);
			if (lives <= 0) {
				LK.showGameOver();
				return;
			}
			continue;
		}
		// Remove rock if off screen
		if (r.y > 2732 + 80) {
			r.destroy();
			rocks.splice(j, 1);
		}
	}
};
// Update lives display
function updateLives() {
	var s = '';
	for (var i = 0; i < lives; i++) s += '❤';
	livesTxt.setText(s);
}