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

/**** 
* Classes
****/ 
// Obstacle class: spikes or blocks
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	// Randomly choose obstacle type: spike or block
	var type = Math.random() < 0.5 ? 'spike' : 'block';
	if (type === 'spike') {
		// Spike: triangle (use box asset, scale to triangle shape)
		var spikeAsset = self.attachAsset('spike', {
			anchorX: 0.5,
			anchorY: 1
		});
		// width: 80, height: 120, color: 0xff4444, shape: 'box'
		// We'll visually "fake" a triangle by scaling Y and X
		spikeAsset.scaleX = 1;
		spikeAsset.scaleY = 1.2;
	} else {
		// Block: rectangle
		var blockAsset = self.attachAsset('obstacleBlock', {
			anchorX: 0.5,
			anchorY: 1
		});
		// width: 120, height: 120, color: 0x888888, shape: 'box'
	}
	self.type = type;
	// Update method: move left
	self.update = function () {
		self.x -= obstacleSpeed;
	};
	return self;
});
// Player class: geometric box that auto-runs and jumps
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach player asset (box)
	var playerAsset = self.attachAsset('playerBox', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Physics properties
	self.vy = 0; // vertical velocity
	self.isJumping = false;
	self.grounded = true;
	// Constants
	self.jumpVelocity = -48; // negative is up
	self.gravity = 5; // gravity per frame
	// Set initial size and color
	// (Asset will be created automatically)
	// width: 120, height: 120, color: 0x2eccff
	// Update method called every tick
	self.update = function () {
		// Apply gravity
		if (!self.grounded) {
			self.vy += self.gravity;
			self.y += self.vy;
			// Check for landing on ground
			if (self.y >= groundY) {
				self.y = groundY;
				self.vy = 0;
				self.grounded = true;
				self.isJumping = false;
			}
		}
	};
	// Jump method
	self.jump = function () {
		if (self.grounded && !self.isJumping) {
			self.vy = self.jumpVelocity;
			self.grounded = false;
			self.isJumping = true;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Tween plugin for jump and obstacle animations
// --- Constants ---
var groundY = 2200; // Y position of ground (player stands here)
var playerStartX = 500;
var playerStartY = groundY;
var obstacleStartX = 2200; // Obstacles spawn off-screen right
var obstacleSpeed = 28; // How fast obstacles move left
var minObstacleGap = 500; // Minimum distance between obstacles
var maxObstacleGap = 900; // Maximum distance between obstacles
// --- Asset Initialization (auto by LK, but for clarity) ---
// --- Game State ---
var player;
var obstacles = [];
var score = 0;
var scoreTxt;
var lastObstacleX = 0;
var gameStarted = false;
// --- Ground ---
var ground = LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: groundY + 1
});
game.addChild(ground);
// --- Player ---
player = new Player();
player.x = playerStartX;
player.y = playerStartY;
game.addChild(player);
// --- Score Display ---
scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// --- Start State ---
resetGame();
function resetGame() {
	// Remove all obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].destroy();
	}
	obstacles = [];
	// Reset player
	player.x = playerStartX;
	player.y = playerStartY;
	player.vy = 0;
	player.grounded = true;
	player.isJumping = false;
	// Reset score
	score = 0;
	LK.setScore(0);
	scoreTxt.setText('0');
	// Reset obstacle spawn
	lastObstacleX = 1600;
	// Spawn initial obstacles
	for (var i = 0; i < 3; i++) {
		spawnObstacle(lastObstacleX + 800 * i);
	}
	gameStarted = true;
}
// --- Obstacle Spawning ---
function spawnObstacle(x) {
	var obs = new Obstacle();
	obs.x = x;
	obs.y = groundY;
	obstacles.push(obs);
	game.addChild(obs);
	lastObstacleX = x;
}
// --- Collision Detection ---
function checkCollision(a, b) {
	// Simple AABB collision
	var ab = a.getBounds();
	var bb = b.getBounds();
	return ab.x < bb.x + bb.width && ab.x + ab.width > bb.x && ab.y < bb.y + bb.height && ab.y + ab.height > bb.y;
}
// --- Game Update Loop ---
game.update = function () {
	if (!gameStarted) return;
	// Update player
	player.update();
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove obstacles that have gone off screen
		if (obs.x < -200) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision with player
		if (checkCollision(player, obs)) {
			// Flash screen and show game over
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			gameStarted = false;
			return;
		}
	}
	// Spawn new obstacles if needed
	if (obstacles.length === 0 || obstacles.length > 0 && obstacles[obstacles.length - 1].x < 2048 - minObstacleGap) {
		var gap = minObstacleGap + Math.floor(Math.random() * (maxObstacleGap - minObstacleGap));
		spawnObstacle(2048 + gap);
	}
	// Score: increase as player passes obstacles
	for (var j = 0; j < obstacles.length; j++) {
		var obs2 = obstacles[j];
		if (!obs2.passed && obs2.x + 60 < player.x) {
			obs2.passed = true;
			score += 1;
			LK.setScore(score);
			scoreTxt.setText(score + '');
		}
	}
};
// --- Input: Tap to Jump ---
game.down = function (x, y, obj) {
	if (!gameStarted) return;
	player.jump();
};
// --- Reset on Game Over ---
LK.on('gameover', function () {
	// Wait a short moment before reset to allow flash
	LK.setTimeout(function () {
		resetGame();
	}, 400);
});
// --- Prevent drag/scroll on mobile (handled by LK) ---
// --- Center score text ---
scoreTxt.setText('0');
scoreTxt.anchor.set(0.5, 0);
// --- End of file ---