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

/**** 
* Classes
****/ 
// IceBlock class: represents a tappable ice block (good or bad)
var IceBlock = Container.expand(function () {
	var self = Container.call(this);
	// Properties
	self.isGood = true; // true = good, false = bad
	// Attach asset (default to good, can be changed)
	var blockAsset = null;
	// Set up block type and visuals
	self.setType = function (isGood) {
		self.isGood = isGood;
		if (blockAsset) {
			blockAsset.destroy();
		}
		blockAsset = self.attachAsset(isGood ? 'ice_good' : 'ice_bad', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	// Animate in (pop effect)
	self.popIn = function () {
		self.scaleX = 0.5;
		self.scaleY = 0.5;
		tween(self, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 120,
			easing: tween.easeOut
		});
	};
	// Handle tap
	self.down = function (x, y, obj) {
		if (self.isGood) {
			// Good block tapped: score up, pop, remove
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			// Animate pop out
			tween(self, {
				scaleX: 1.3,
				scaleY: 1.3,
				alpha: 0
			}, {
				duration: 120,
				easing: tween.easeIn,
				onFinish: function onFinish() {
					self.destroy();
					// Remove from array in main game
					for (var i = iceBlocks.length - 1; i >= 0; i--) {
						if (iceBlocks[i] === self) {
							iceBlocks.splice(i, 1);
							break;
						}
					}
				}
			});
		} else {
			// Bad block tapped: game over
			LK.effects.flashScreen(0xff0000, 600);
			LK.showGameOver();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a2a3a
});

/**** 
* Game Code
****/ 
// Bad ice block: red box
// Good ice block: white box
// Score display
var scoreTxt = new Text2('0', {
	size: 140,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Array to hold active ice blocks
var iceBlocks = [];
// Block spawn timing
var spawnInterval = 900; // ms, will decrease as score increases
var minInterval = 350; // ms, minimum spawn interval
var spawnTimer = null;
// Block lifetime (how long before it disappears if not tapped)
var blockLifetime = 1200; // ms
// Block spawn area (avoid top 200px and bottom 200px, and left 100px for menu)
var marginTop = 200;
var marginBottom = 200;
var marginLeft = 120;
var marginRight = 120;
// Block size (get from asset)
var blockSize = 180;
// Helper: spawn a new block
function spawnBlock() {
	// Decide if good or bad block (80% good, 20% bad)
	var isGood = Math.random() < 0.8;
	var block = new IceBlock();
	block.setType(isGood);
	// Random position (avoid overlap with menu and edges)
	var x = marginLeft + blockSize / 2 + Math.random() * (2048 - marginLeft - marginRight - blockSize);
	var y = marginTop + blockSize / 2 + Math.random() * (2732 - marginTop - marginBottom - blockSize);
	block.x = x;
	block.y = y;
	block.alpha = 1;
	block.scaleX = 1;
	block.scaleY = 1;
	// Animate in
	block.popIn();
	// Add to game and array
	game.addChild(block);
	iceBlocks.push(block);
	// Remove after lifetime if not tapped
	block._timeout = LK.setTimeout(function () {
		// If still present, remove (only for good blocks, bad blocks just fade)
		for (var i = iceBlocks.length - 1; i >= 0; i--) {
			if (iceBlocks[i] === block) {
				// Animate fade out
				tween(block, {
					alpha: 0
				}, {
					duration: 120,
					onFinish: function onFinish() {
						block.destroy();
					}
				});
				iceBlocks.splice(i, 1);
				break;
			}
		}
	}, blockLifetime);
}
// Helper: clear all blocks (on game over)
function clearBlocks() {
	for (var i = iceBlocks.length - 1; i >= 0; i--) {
		var block = iceBlocks[i];
		if (block._timeout) LK.clearTimeout(block._timeout);
		block.destroy();
		iceBlocks.splice(i, 1);
	}
}
// Handle tap anywhere: check if tap is on a block
game.down = function (x, y, obj) {
	// Check from topmost to bottom
	for (var i = iceBlocks.length - 1; i >= 0; i--) {
		var block = iceBlocks[i];
		// Use .containsPoint to check if tap is inside block
		// Since we don't have .containsPoint, check distance to center
		var dx = x - block.x;
		var dy = y - block.y;
		if (dx * dx + dy * dy < blockSize / 2 * (blockSize / 2)) {
			// Forward event to block
			block.down(x, y, obj);
			return;
		}
	}
	// Tapped empty space: do nothing
};
// Game update: not needed for this game, but required for block lifetime
game.update = function () {
	// Increase difficulty: decrease spawn interval as score increases
	var score = LK.getScore();
	var newInterval = spawnInterval;
	if (score < 10) {
		newInterval = 900;
	} else if (score < 20) {
		newInterval = 750;
	} else if (score < 35) {
		newInterval = 600;
	} else if (score < 50) {
		newInterval = 500;
	} else {
		newInterval = 400;
	}
	if (newInterval !== spawnInterval) {
		spawnInterval = newInterval;
		// Restart timer
		if (spawnTimer) LK.clearInterval(spawnTimer);
		spawnTimer = LK.setInterval(spawnBlock, spawnInterval);
	}
};
// Start game: reset score, clear blocks, start spawning
function startGame() {
	LK.setScore(0);
	scoreTxt.setText('0');
	clearBlocks();
	if (spawnTimer) LK.clearInterval(spawnTimer);
	spawnInterval = 900;
	spawnTimer = LK.setInterval(spawnBlock, spawnInterval);
	// Spawn first block immediately
	spawnBlock();
}
// On game over, clear blocks and stop timer
LK.on('gameover', function () {
	clearBlocks();
	if (spawnTimer) LK.clearInterval(spawnTimer);
});
// On game start (including after restart)
LK.on('gamestart', function () {
	startGame();
});
// Start the game for the first time
startGame();