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

/**** 
* Classes
****/ 
// Cloud obstacle
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var sprite = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = sprite.width / 2;
	self.vx = -10;
	self.update = function () {
		self.x += self.vx;
	};
	return self;
});
// Ember collectible
var Ember = Container.expand(function () {
	var self = Container.call(this);
	var sprite = self.attachAsset('ember', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = sprite.width / 2;
	self.vx = -12;
	self.update = function () {
		self.x += self.vx;
	};
	return self;
});
// Falcon (Richard) class
var Falcon = Container.expand(function () {
	var self = Container.call(this);
	var sprite = self.attachAsset('falcon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = sprite.width / 2;
	self.vx = 18;
	self.update = function () {
		self.x += self.vx;
	};
	return self;
});
// Phoenix (Vixen) class
var Phoenix = Container.expand(function () {
	var self = Container.call(this);
	var sprite = self.attachAsset('phoenix', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = sprite.width / 2;
	self.energy = 0; // 0-1
	self.isTransformed = false;
	self.update = function () {
		// No auto-movement; movement is handled by drag/touch
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1e2a44
});

/**** 
* Game Code
****/ 
// Energy bar fill
// Energy bar background
// Dark cloud (obstacle)
// Ember collectible
// Falcon (Richard)
// Phoenix (Vixen)
// Game state
var phoenix, falcon;
var embers = [];
var clouds = [];
var dragNode = null;
var energyBarBg, energyBarFill;
var score = 0;
var scoreTxt;
var energy = 0; // 0-1
var inBonusStage = false;
var bonusTimer = 0;
var lastPhoenixPos = {
	x: 0,
	y: 0
};
// Place Phoenix at start
phoenix = new Phoenix();
phoenix.x = 400;
phoenix.y = 1366;
game.addChild(phoenix);
// Energy bar UI
energyBarBg = LK.getAsset('energyBarBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 724,
	y: 120
});
energyBarFill = LK.getAsset('energyBarFill', {
	anchorX: 0,
	anchorY: 0.5,
	x: 724,
	y: 120
});
energyBarFill.width = 0;
LK.gui.top.addChild(energyBarBg);
LK.gui.top.addChild(energyBarFill);
// Score UI
scoreTxt = new Text2('0', {
	size: 100,
	fill: '#fff'
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.x = 2048 / 2;
scoreTxt.y = 30;
// Helper: spawn ember
function spawnEmber() {
	var ember = new Ember();
	ember.x = 2048 + 80;
	ember.y = 300 + Math.floor(Math.random() * (2732 - 600));
	embers.push(ember);
	game.addChild(ember);
}
// Helper: spawn cloud
function spawnCloud() {
	var cloud = new Cloud();
	cloud.x = 2048 + 120;
	cloud.y = 200 + Math.floor(Math.random() * (2732 - 400));
	clouds.push(cloud);
	game.addChild(cloud);
}
// Dragging Phoenix
function handleMove(x, y, obj) {
	if (dragNode && !inBonusStage) {
		// Clamp to screen, avoid top left 100x100
		var nx = Math.max(phoenix.radius + 100, Math.min(2048 - phoenix.radius, x));
		var ny = Math.max(phoenix.radius, Math.min(2732 - phoenix.radius, y));
		dragNode.x = nx;
		dragNode.y = ny;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	// Only allow drag if not in bonus
	if (!inBonusStage) {
		dragNode = phoenix;
		handleMove(x, y, obj);
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main update loop
game.update = function () {
	// Phoenix stage
	if (!inBonusStage) {
		// Spawn embers
		if (LK.ticks % 45 === 0) {
			spawnEmber();
		}
		// Spawn clouds
		if (LK.ticks % 90 === 0) {
			spawnCloud();
		}
		// Update embers
		for (var i = embers.length - 1; i >= 0; i--) {
			var ember = embers[i];
			ember.update();
			// Off screen
			if (ember.x < -80) {
				ember.destroy();
				embers.splice(i, 1);
				continue;
			}
			// Collect
			if (phoenix.intersects(ember)) {
				ember.destroy();
				embers.splice(i, 1);
				score += 1;
				if (energy < 1) {
					energy += 0.08;
					if (energy > 1) energy = 1;
				}
				scoreTxt.setText(score);
				// Animate energy bar
				tween(energyBarFill, {
					width: 600 * energy
				}, {
					duration: 200,
					easing: tween.cubicOut
				});
			}
		}
		// Update clouds
		for (var j = clouds.length - 1; j >= 0; j--) {
			var cloud = clouds[j];
			cloud.update();
			if (cloud.x < -120) {
				cloud.destroy();
				clouds.splice(j, 1);
				continue;
			}
			// Hit
			if (phoenix.intersects(cloud)) {
				// Flash, game over
				LK.effects.flashScreen(0x222244, 900);
				LK.showGameOver();
				return;
			}
		}
		// Energy full: transform!
		if (energy >= 1 && !phoenix.isTransformed) {
			phoenix.isTransformed = true;
			// Animate: fade out phoenix, fade in falcon
			tween(phoenix, {
				alpha: 0
			}, {
				duration: 600,
				easing: tween.linear,
				onFinish: function onFinish() {
					phoenix.visible = false;
					startBonusStage();
				}
			});
		}
	}
	// Bonus stage: Falcon
	if (inBonusStage && falcon) {
		falcon.update();
		// End bonus after 4 seconds or off screen
		bonusTimer++;
		if (falcon.x > 2048 + 200 || bonusTimer > 240) {
			LK.showYouWin();
			return;
		}
	}
};
// Start bonus stage: Falcon
function startBonusStage() {
	inBonusStage = true;
	// Remove embers/clouds
	for (var i = 0; i < embers.length; i++) embers[i].destroy();
	for (var j = 0; j < clouds.length; j++) clouds[j].destroy();
	embers = [];
	clouds = [];
	// Place Falcon at Phoenix's last position
	falcon = new Falcon();
	falcon.x = phoenix.x;
	falcon.y = phoenix.y;
	game.addChild(falcon);
	bonusTimer = 0;
	// Animate falcon in
	falcon.alpha = 0;
	tween(falcon, {
		alpha: 1
	}, {
		duration: 400,
		easing: tween.linear
	});
	// Animate energy bar out
	tween(energyBarBg, {
		alpha: 0
	}, {
		duration: 400
	});
	tween(energyBarFill, {
		alpha: 0
	}, {
		duration: 400
	});
}
// Set initial energy bar width
energyBarFill.width = 0;
// Place UI elements
energyBarBg.y = 120;
energyBarFill.y = 120;
energyBarBg.x = 724;
energyBarFill.x = 724;
// Make sure phoenix is above clouds/embers
phoenix.zIndex = 10;
// Initial score
scoreTxt.setText(score);
// Ensure all elements are visible and not in top left 100x100
phoenix.x = Math.max(phoenix.radius + 100, phoenix.x);
phoenix.y = Math.max(phoenix.radius, phoenix.y);