/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	unlockedSkins: [0],
	collectedSacks: {},
	currentLevel: 1,
	totalSacks: 0
});

/**** 
* Classes
****/ 
// Character
var Character = Container.expand(function () {
	var self = Container.call(this);
	self.skinId = 0;
	self.sprite = null;
	self.vx = 0;
	self.vy = 0;
	self.onGround = false;
	self.jumpQueued = false;
	self.width = 100;
	self.height = 100;
	self.setSkin = function (skinId) {
		if (self.sprite) {
			self.removeChild(self.sprite);
		}
		self.skinId = skinId;
		self.sprite = self.attachAsset('char_skin_' + skinId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.width = self.sprite.width;
		self.height = self.sprite.height;
	};
	self.init = function (skinId) {
		self.setSkin(skinId);
		self.x = 200;
		self.y = 200;
		self.vx = 0;
		self.vy = 0;
		self.onGround = false;
		self.jumpQueued = false;
	};
	self.update = function () {
		// Physics handled in main game loop
	};
	return self;
});
/**** 
* Level Data
****/ 
// For MVP, define a few sample levels. Each level: {platforms:[], sacks:[], portal:{x,y}, spawn:{x,y}}
// Platform (static or moving)
var Platform = Container.expand(function () {
	var self = Container.call(this);
	self.isMoving = false;
	self.moveDir = 1;
	self.moveAxis = 'x';
	self.moveRange = 0;
	self.moveSpeed = 0;
	self.startPos = {
		x: 0,
		y: 0
	};
	self.init = function (data) {
		// data: {x, y, width, height, moving, axis, range, speed}
		var assetId = data.moving ? 'platform_moving' : 'platform';
		var plat = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5,
			width: data.width,
			height: data.height
		});
		self.x = data.x;
		self.y = data.y;
		self.width = data.width;
		self.height = data.height;
		self.isMoving = !!data.moving;
		if (self.isMoving) {
			self.moveAxis = data.axis || 'x';
			self.moveRange = data.range || 0;
			self.moveSpeed = data.speed || 0;
			self.startPos.x = data.x;
			self.startPos.y = data.y;
		}
	};
	self.update = function () {
		if (self.isMoving) {
			var t = Math.sin(LK.ticks * self.moveSpeed / 60) * self.moveRange;
			if (self.moveAxis === 'x') {
				self.x = self.startPos.x + t;
			} else {
				self.y = self.startPos.y + t;
			}
		}
	};
	return self;
});
// Portal (level exit)
var Portal = Container.expand(function () {
	var self = Container.call(this);
	var portal = self.attachAsset('portal', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = 0;
	self.y = 0;
	self.init = function (data) {
		self.x = data.x;
		self.y = data.y;
	};
	return self;
});
// Sack collectible
var Sack = Container.expand(function () {
	var self = Container.call(this);
	var sack = self.attachAsset('sack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.level = 1;
	self.sackId = 0; // unique per level
	self.init = function (data) {
		self.x = data.x;
		self.y = data.y;
		self.level = data.level;
		self.sackId = data.sackId;
		self.collected = false;
		sack.alpha = 1;
	};
	self.collect = function () {
		if (!self.collected) {
			self.collected = true;
			tween(sack, {
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					self.visible = false;
				}
			});
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// For MVP, define a few sample levels. Each level: {platforms:[], sacks:[], portal:{x,y}, spawn:{x,y}}
/**** 
* Level Data
****/ 
// Character skins (15 colors)
// Portal (level exit)
// Sack collectible
// Moving platform
// Platform (static)
// --- Global State ---
var LEVELS = [
// Level 1
{
	platforms: [{
		x: 1024,
		y: 2600,
		width: 800,
		height: 60
	},
	// ground
	{
		x: 600,
		y: 2200,
		width: 400,
		height: 60
	}, {
		x: 1400,
		y: 2000,
		width: 400,
		height: 60
	}, {
		x: 1024,
		y: 1700,
		width: 400,
		height: 60,
		moving: true,
		axis: 'x',
		range: 200,
		speed: 1.2
	}],
	sacks: [{
		x: 600,
		y: 2100,
		sackId: 0
	}, {
		x: 1400,
		y: 1900,
		sackId: 1
	}],
	portal: {
		x: 1024,
		y: 1550
	},
	spawn: {
		x: 1024,
		y: 2500
	}
},
// Level 2
{
	platforms: [{
		x: 1024,
		y: 2600,
		width: 800,
		height: 60
	}, {
		x: 400,
		y: 2200,
		width: 400,
		height: 60,
		moving: true,
		axis: 'y',
		range: 150,
		speed: 1.5
	}, {
		x: 1648,
		y: 2200,
		width: 400,
		height: 60,
		moving: true,
		axis: 'y',
		range: 150,
		speed: 1.5
	}, {
		x: 1024,
		y: 1800,
		width: 400,
		height: 60
	}],
	sacks: [{
		x: 400,
		y: 2100,
		sackId: 0
	}, {
		x: 1648,
		y: 2100,
		sackId: 1
	}, {
		x: 1024,
		y: 1700,
		sackId: 2
	}],
	portal: {
		x: 1024,
		y: 1650
	},
	spawn: {
		x: 1024,
		y: 2500
	}
}
// ... up to 200 levels in future
];
var currentLevel = storage.currentLevel || 1;
var unlockedSkins = storage.unlockedSkins || [0];
var selectedSkin = unlockedSkins[0];
var collectedSacks = storage.collectedSacks || {};
var totalSacks = storage.totalSacks || 0;
var character = null;
var platforms = [];
var sacks = [];
var portal = null;
var levelData = null;
var isTouching = false;
var touchStartX = 0,
	touchStartY = 0;
var moveDir = 0; // -1 left, 1 right, 0 none
var jumpPressed = false;
var canJump = false;
var cameraY = 0;
var levelText = null;
var sackText = null;
var skinText = null;
var skinSelectNodes = [];
var skinSelectActive = false;
// --- UI ---
function updateSackText() {
	var collected = 0,
		total = 0;
	if (levelData && levelData.sacks) {
		total = levelData.sacks.length;
		var key = 'L' + currentLevel;
		var arr = collectedSacks[key] || [];
		for (var i = 0; i < arr.length; ++i) if (arr[i]) collected++;
	}
	sackText.setText('Sacks: ' + collected + '/' + total);
}
function updateLevelText() {
	levelText.setText('Level ' + currentLevel);
}
function updateSkinText() {
	skinText.setText('Skins: ' + unlockedSkins.length + '/15');
}
// --- UI Elements ---
levelText = new Text2('Level 1', {
	size: 90,
	fill: "#fff"
});
levelText.anchor.set(0.5, 0);
LK.gui.top.addChild(levelText);
sackText = new Text2('Sacks: 0/0', {
	size: 90,
	fill: "#fff"
});
sackText.anchor.set(0.5, 0);
LK.gui.top.addChild(sackText);
skinText = new Text2('Skins: 1/15', {
	size: 70,
	fill: "#fff"
});
skinText.anchor.set(0.5, 0);
LK.gui.bottom.addChild(skinText);
// --- Skin Select UI ---
function showSkinSelect() {
	if (skinSelectActive) return;
	skinSelectActive = true;
	for (var i = 0; i < 15; ++i) {
		var node = LK.getAsset('char_skin_' + i, {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.7,
			scaleY: 0.7
		});
		node.x = 300 + i * 120;
		node.y = 400;
		node.alpha = unlockedSkins.indexOf(i) !== -1 ? 1 : 0.3;
		node.skinId = i;
		node.interactive = true;
		node.down = function (x, y, obj) {
			if (unlockedSkins.indexOf(obj.skinId) !== -1) {
				selectedSkin = obj.skinId;
				storage.selectedSkin = selectedSkin;
				character.setSkin(selectedSkin);
				hideSkinSelect();
			}
		};
		skinSelectNodes.push(node);
		LK.gui.center.addChild(node);
	}
}
function hideSkinSelect() {
	skinSelectActive = false;
	for (var i = 0; i < skinSelectNodes.length; ++i) {
		LK.gui.center.removeChild(skinSelectNodes[i]);
	}
	skinSelectNodes = [];
}
// --- Level Loading ---
function loadLevel(n) {
	// Clean up previous
	for (var i = 0; i < platforms.length; ++i) game.removeChild(platforms[i]);
	for (var i = 0; i < sacks.length; ++i) game.removeChild(sacks[i]);
	if (portal) game.removeChild(portal);
	platforms = [];
	sacks = [];
	portal = null;
	cameraY = 0;
	// Clamp level
	if (n < 1) n = 1;
	if (n > LEVELS.length) n = LEVELS.length;
	currentLevel = n;
	storage.currentLevel = currentLevel;
	levelData = LEVELS[n - 1];
	// Platforms
	for (var i = 0; i < levelData.platforms.length; ++i) {
		var p = new Platform();
		p.init(levelData.platforms[i]);
		platforms.push(p);
		game.addChild(p);
	}
	// Sacks
	var key = 'L' + currentLevel;
	if (!collectedSacks[key]) collectedSacks[key] = [];
	for (var i = 0; i < levelData.sacks.length; ++i) {
		var s = new Sack();
		var data = levelData.sacks[i];
		s.init({
			x: data.x,
			y: data.y,
			level: currentLevel,
			sackId: data.sackId
		});
		if (collectedSacks[key][data.sackId]) {
			s.collected = true;
			s.visible = false;
		}
		sacks.push(s);
		game.addChild(s);
	}
	// Portal
	portal = new Portal();
	portal.init(levelData.portal);
	game.addChild(portal);
	// Character
	if (!character) {
		character = new Character();
		character.init(selectedSkin);
		game.addChild(character);
	} else {
		character.init(selectedSkin);
	}
	character.x = levelData.spawn.x;
	character.y = levelData.spawn.y;
	updateLevelText();
	updateSackText();
	updateSkinText();
}
// --- Physics/Collision ---
function rectsIntersect(a, b) {
	return a.x - a.width / 2 < b.x + b.width / 2 && a.x + a.width / 2 > b.x - b.width / 2 && a.y - a.height / 2 < b.y + b.height / 2 && a.y + a.height / 2 > b.y - b.height / 2;
}
// --- Touch Controls ---
// Touch left half: move left. Right half: move right. Tap top 1/3: jump. Tap bottom: open skin select.
game.down = function (x, y, obj) {
	if (skinSelectActive) return;
	isTouching = true;
	touchStartX = x;
	touchStartY = y;
	var w = 2048,
		h = 2732;
	if (y > h - 300) {
		// Bottom area: open skin select
		showSkinSelect();
		return;
	}
	if (y < h / 3) {
		// Top: jump
		jumpPressed = true;
		return;
	}
	if (x < w / 2) {
		moveDir = -1;
	} else {
		moveDir = 1;
	}
};
game.up = function (x, y, obj) {
	isTouching = false;
	moveDir = 0;
	jumpPressed = false;
};
game.move = function (x, y, obj) {
	// Not used for movement, but could be for drag controls
};
// --- Main Game Loop ---
game.update = function () {
	// Update moving platforms
	for (var i = 0; i < platforms.length; ++i) {
		platforms[i].update();
	}
	// Character physics
	var g = 2.2;
	var maxVy = 40;
	var maxVx = 18;
	var accel = 2.5;
	var friction = 0.85;
	var jumpV = -38;
	var c = character;
	// Horizontal movement
	if (moveDir !== 0) {
		c.vx += moveDir * accel;
		if (c.vx > maxVx) c.vx = maxVx;
		if (c.vx < -maxVx) c.vx = -maxVx;
	} else {
		c.vx *= friction;
		if (Math.abs(c.vx) < 0.5) c.vx = 0;
	}
	// Gravity
	c.vy += g;
	if (c.vy > maxVy) c.vy = maxVy;
	// Platform collision
	c.onGround = false;
	var nextX = c.x + c.vx;
	var nextY = c.y + c.vy;
	for (var i = 0; i < platforms.length; ++i) {
		var p = platforms[i];
		// Only check collision if close
		if (Math.abs(nextX - p.x) < 400 && Math.abs(nextY - p.y) < 200) {
			// Simple AABB
			var px = p.x,
				py = p.y,
				pw = p.width,
				ph = p.height;
			// Check vertical collision (falling onto platform)
			if (c.x + c.width / 2 > px - pw / 2 && c.x - c.width / 2 < px + pw / 2) {
				// From above
				if (c.y + c.height / 2 <= py - ph / 2 && nextY + c.height / 2 >= py - ph / 2) {
					// Land on platform
					nextY = py - ph / 2 - c.height / 2;
					c.vy = 0;
					c.onGround = true;
				}
			}
			// Horizontal collision (run into side)
			if (c.y + c.height / 2 > py - ph / 2 && c.y - c.height / 2 < py + ph / 2) {
				// From left
				if (c.x - c.width / 2 <= px + pw / 2 && nextX - c.width / 2 >= px + pw / 2) {
					nextX = px + pw / 2 + c.width / 2;
					c.vx = 0;
				}
				// From right
				if (c.x + c.width / 2 >= px - pw / 2 && nextX + c.width / 2 <= px - pw / 2) {
					nextX = px - pw / 2 - c.width / 2;
					c.vx = 0;
				}
			}
		}
	}
	// Jump
	if (jumpPressed && c.onGround) {
		c.vy = jumpV;
		c.onGround = false;
		jumpPressed = false;
	}
	// Move character
	c.x = nextX;
	c.y = nextY;
	// Prevent falling out of bounds
	if (c.y > 2800) {
		// Respawn
		c.x = levelData.spawn.x;
		c.y = levelData.spawn.y;
		c.vx = 0;
		c.vy = 0;
	}
	// Camera follow
	var targetCamY = c.y - 1200;
	if (targetCamY < 0) targetCamY = 0;
	cameraY += (targetCamY - cameraY) * 0.15;
	game.y = -cameraY;
	// Sack collection
	var key = 'L' + currentLevel;
	for (var i = 0; i < sacks.length; ++i) {
		var s = sacks[i];
		if (!s.collected && rectsIntersect(c, s)) {
			s.collect();
			collectedSacks[key][s.sackId] = 1;
			storage.collectedSacks = collectedSacks;
			totalSacks++;
			storage.totalSacks = totalSacks;
			updateSackText();
			// Unlock new skin every 10 sacks
			var unlockCount = unlockedSkins.length;
			if (totalSacks >= unlockCount * 10 && unlockCount < 15) {
				unlockedSkins.push(unlockCount);
				storage.unlockedSkins = unlockedSkins;
				updateSkinText();
				// Flash to show unlock
				LK.effects.flashScreen(0x00ff00, 600);
			}
		}
	}
	// Portal check
	if (rectsIntersect(c, portal)) {
		// Next level
		if (currentLevel < LEVELS.length) {
			loadLevel(currentLevel + 1);
		} else {
			// Game complete
			LK.showYouWin();
		}
	}
};
// --- Start Game ---
loadLevel(currentLevel);
// --- Touch: Hide skin select on up if open
LK.gui.center.up = function (x, y, obj) {
	if (skinSelectActive) hideSkinSelect();
};