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

/**** 
* Classes
****/ 
// Falcon (player) class
var Falcon = Container.expand(function () {
	var self = Container.call(this);
	var falconSprite = self.attachAsset('falcon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// For a little personality, add a slight tilt
	falconSprite.rotation = -0.1;
	// For hit feedback
	self.flash = function () {
		tween(falconSprite, {
			tint: 0xff8888
		}, {
			duration: 150,
			onFinish: function onFinish() {
				tween(falconSprite, {
					tint: 0x8c6e3f
				}, {
					duration: 150
				});
			}
		});
	};
	return self;
});
// Feather collectible
var Feather = Container.expand(function () {
	var self = Container.call(this);
	var featherSprite = self.attachAsset('feather', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Obstacle base class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	self.speed = 0;
	self.type = '';
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Sponge obstacle
var Sponge = Obstacle.expand(function () {
	var self = Obstacle.call(this);
	var spongeSprite = self.attachAsset('sponge', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'sponge';
	return self;
});
// Splash obstacle
var Splash = Obstacle.expand(function () {
	var self = Obstacle.call(this);
	var splashSprite = self.attachAsset('splash', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'splash';
	return self;
});
// Duck obstacle
var Duck = Obstacle.expand(function () {
	var self = Obstacle.call(this);
	var duckSprite = self.attachAsset('duck', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'duck';
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xb3e6f7 // Light blue, like bath water
});

/**** 
* Game Code
****/ 
// Feather (collectible)
// Splash (obstacle)
// Rubber ducky (obstacle)
// Sponge (obstacle)
// Falcon (player)
// Game area dimensions
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
// Falcon/player
var falcon = new Falcon();
game.addChild(falcon);
// Start position: bottom center, above the bottom edge
falcon.x = GAME_WIDTH / 2;
falcon.y = GAME_HEIGHT - 350;
// Score
var score = 0;
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Feathers collected
var feathersCollected = 0;
var featherTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFBE6
});
featherTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(featherTxt);
// Arrays for obstacles and feathers
var obstacles = [];
var feathers = [];
// Dragging logic
var dragFalcon = false;
// Difficulty progression
var level = 1;
var ticksSinceStart = 0;
var nextLevelAt = 1200; // ~20 seconds per level
// For collision state
var lastFalconHit = false;
// Move handler for dragging falcon
function handleMove(x, y, obj) {
	if (dragFalcon) {
		// Clamp falcon within game area, avoid top 100px (menu)
		var minX = falcon.width / 2;
		var maxX = GAME_WIDTH - falcon.width / 2;
		var minY = 100 + falcon.height / 2;
		var maxY = GAME_HEIGHT - falcon.height / 2;
		falcon.x = Math.max(minX, Math.min(maxX, x));
		falcon.y = Math.max(minY, Math.min(maxY, y));
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	// Only start drag if touch is on falcon
	var local = falcon.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (Math.abs(local.x) <= falcon.width / 2 && Math.abs(local.y) <= falcon.height / 2) {
		dragFalcon = true;
		handleMove(x, y, obj);
	}
};
game.up = function (x, y, obj) {
	dragFalcon = false;
};
// Helper: spawn random obstacle
function spawnObstacle() {
	var types = ['sponge', 'duck', 'splash'];
	// Increase chance of splash as level increases
	if (level > 2) types.push('splash');
	var t = types[Math.floor(Math.random() * types.length)];
	var obs;
	if (t === 'sponge') obs = new Sponge();else if (t === 'duck') obs = new Duck();else obs = new Splash();
	// Random X, avoid left 100px (menu)
	var minX = 100 + obs.width / 2;
	var maxX = GAME_WIDTH - obs.width / 2;
	obs.x = minX + Math.random() * (maxX - minX);
	obs.y = -obs.height / 2;
	// Speed increases with level
	obs.speed = 8 + level * 2 + Math.random() * 2;
	obstacles.push(obs);
	game.addChild(obs);
}
// Helper: spawn feather
function spawnFeather() {
	var feather = new Feather();
	var minX = 100 + feather.width / 2;
	var maxX = GAME_WIDTH - feather.width / 2;
	feather.x = minX + Math.random() * (maxX - minX);
	feather.y = -feather.height / 2;
	feather.speed = 10 + level * 1.5 + Math.random() * 2;
	feathers.push(feather);
	game.addChild(feather);
}
// Main game update
game.update = function () {
	ticksSinceStart++;
	// Level up
	if (ticksSinceStart > nextLevelAt) {
		level++;
		nextLevelAt += 1200;
		// Optionally, flash screen or show level up
		LK.effects.flashScreen(0x7fdfff, 400);
	}
	// Spawn obstacles at intervals, faster with level
	if (LK.ticks % Math.max(40 - level * 3, 12) === 0) {
		spawnObstacle();
	}
	// Spawn feathers less often
	if (LK.ticks % Math.max(180 - level * 10, 60) === 0) {
		spawnFeather();
	}
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove if off screen
		if (obs.y - obs.height / 2 > GAME_HEIGHT + 50) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision with falcon
		var hit = obs.intersects(falcon);
		if (hit) {
			if (!lastFalconHit) {
				// Only trigger on transition
				falcon.flash();
				LK.effects.flashScreen(0xff6666, 600);
				LK.showGameOver();
				return;
			}
		}
		lastFalconHit = hit;
	}
	// Update feathers
	for (var j = feathers.length - 1; j >= 0; j--) {
		var f = feathers[j];
		f.update();
		// Remove if off screen
		if (f.y - f.height / 2 > GAME_HEIGHT + 50) {
			f.destroy();
			feathers.splice(j, 1);
			continue;
		}
		// Collectible collision
		if (f.intersects(falcon)) {
			feathersCollected++;
			featherTxt.setText(feathersCollected);
			// Score bonus for feathers
			score += 5;
			scoreTxt.setText(score);
			// Feather collect effect
			LK.effects.flashObject(f, 0xffff99, 300);
			f.destroy();
			feathers.splice(j, 1);
			continue;
		}
	}
	// Score increases over time
	if (LK.ticks % 30 === 0) {
		score++;
		scoreTxt.setText(score);
	}
	// Win condition: survive to level 5 and collect at least 10 feathers
	if (level >= 5 && feathersCollected >= 10) {
		LK.showYouWin();
		return;
	}
};
// Initial text
scoreTxt.setText(score);
featherTxt.setText(feathersCollected);