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

/**** 
* Classes
****/ 
// Player class: controllable character at the bottom
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach player asset (box, blue)
	var playerAsset = self.attachAsset('playerBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set initial size and color
	playerAsset.width = 180;
	playerAsset.height = 120;
	playerAsset.color = 0x2a6cff;
	// For collision, expose width/height
	self.getWidth = function () {
		return playerAsset.width;
	};
	self.getHeight = function () {
		return playerAsset.height;
	};
	return self;
});
// Rock class: falling obstacles
var Rock = Container.expand(function () {
	var self = Container.call(this);
	// Attach rock asset (ellipse, gray)
	var rockAsset = self.attachAsset('rockEllipse', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	rockAsset.width = 140;
	rockAsset.height = 110;
	rockAsset.color = 0x888888;
	// Speed will be set on spawn
	self.speed = 6;
	// For collision, expose width/height
	self.getWidth = function () {
		return rockAsset.width;
	};
	self.getHeight = function () {
		return rockAsset.height;
	};
	// Update: move down
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222222
});

/**** 
* Game Code
****/ 
// Game area dimensions
var GAME_W = 2048;
var GAME_H = 2732;
// Player setup
var player = new Player();
game.addChild(player);
player.x = GAME_W / 2;
player.y = GAME_H - 180;
// Track dragging
var dragPlayer = false;
// Rocks array
var rocks = [];
// Timer and time left
var GAME_DURATION = 20; // seconds
var timeLeft = GAME_DURATION;
var timerText = new Text2('20', {
	size: 120,
	fill: "#fff"
});
timerText.anchor.set(0.5, 0);
LK.gui.top.addChild(timerText);
// Difficulty progression
var spawnInterval = 900; // ms, will decrease
var minSpawnInterval = 320; // ms
var spawnTimer = null;
var lastSpawnTick = 0;
var rockSpeed = 6;
var maxRockSpeed = 32;
// Helper: clamp
function clamp(val, min, max) {
	return Math.max(min, Math.min(max, val));
}
// Spawn a new rock at random x
function spawnRock() {
	var rock = new Rock();
	// Random x, but keep fully inside screen
	var margin = 80;
	var rx = margin + Math.random() * (GAME_W - 2 * margin);
	rock.x = rx;
	rock.y = -rock.getHeight() / 2;
	// Set speed based on current difficulty
	rock.speed = rockSpeed + Math.random() * 2;
	rocks.push(rock);
	game.addChild(rock);
}
// Difficulty increases over time
function updateDifficulty() {
	// Progress: 0 at start, 1 at end
	var progress = 1 - timeLeft / GAME_DURATION;
	// Spawn interval decreases, speed increases
	spawnInterval = clamp(900 - progress * 600, minSpawnInterval, 900);
	rockSpeed = clamp(6 + progress * 18, 6, maxRockSpeed);
}
// Timer countdown
var gameTimer = LK.setInterval(function () {
	timeLeft -= 1;
	if (timeLeft < 0) timeLeft = 0;
	timerText.setText(timeLeft.toString());
	if (timeLeft === 0) {
		// Win!
		LK.showYouWin();
	}
}, 1000);
// Initial spawn
spawnRock();
lastSpawnTick = LK.ticks;
// Main update loop
game.update = function () {
	// Difficulty progression
	updateDifficulty();
	// Spawn rocks at interval
	if (LK.ticks - lastSpawnTick >= spawnInterval / 1000 * 60) {
		spawnRock();
		lastSpawnTick = LK.ticks;
	}
	// Update rocks, check for collision or out of bounds
	for (var i = rocks.length - 1; i >= 0; i--) {
		var rock = rocks[i];
		rock.update();
		// Out of screen
		if (rock.y - rock.getHeight() / 2 > GAME_H + 40) {
			rock.destroy();
			rocks.splice(i, 1);
			continue;
		}
		// Collision with player (AABB)
		var dx = Math.abs(rock.x - player.x);
		var dy = Math.abs(rock.y - player.y);
		var overlapX = dx < rock.getWidth() / 2 + player.getWidth() / 2 - 10;
		var overlapY = dy < rock.getHeight() / 2 + player.getHeight() / 2 - 10;
		if (overlapX && overlapY) {
			// Hit!
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			return;
		}
	}
};
// Touch/mouse controls: drag player left/right only
game.down = function (x, y, obj) {
	// Only start drag if touch is near player (vertical margin)
	if (Math.abs(y - player.y) < 220) {
		dragPlayer = true;
		// Move player immediately
		movePlayer(x);
	}
};
game.move = function (x, y, obj) {
	if (dragPlayer) {
		movePlayer(x);
	}
};
game.up = function (x, y, obj) {
	dragPlayer = false;
};
// Move player horizontally, clamp to screen
function movePlayer(x) {
	var halfW = player.getWidth() / 2;
	var minX = halfW + 40;
	var maxX = GAME_W - halfW - 40;
	player.x = clamp(x, minX, maxX);
}
// Center timer text at top, avoid top left 100x100
timerText.x = LK.gui.top.width / 2;
timerText.y = 20;
// Asset initialization (shapes)