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

/**** 
* Classes
****/ 
var Block = Container.expand(function (blockType, blockColor) {
	var self = Container.call(this);
	self.blockType = blockType || 'buildBlock';
	self.blockColor = blockColor || 0x4CAF50;
	self.isPlaced = false;
	self.originalX = 0;
	self.originalY = 0;
	var blockGraphics = self.attachAsset(self.blockType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	if (self.blockType === 'moveBlock') {
		self.moveDirection = 1;
		self.moveSpeed = 2;
		self.moveRange = 100;
	}
	self.update = function () {
		if (isPlayMode && self.blockType === 'moveBlock' && self.isPlaced) {
			self.x += self.moveSpeed * self.moveDirection;
			if (Math.abs(self.x - self.originalX) > self.moveRange) {
				self.moveDirection *= -1;
			}
		}
	};
	self.down = function (x, y, obj) {
		if (!isPlayMode && !self.isPlaced) {
			isDragging = true;
			draggedBlock = self;
		}
	};
	return self;
});
var PaletteButton = Container.expand(function (blockType, yPos) {
	var self = Container.call(this);
	self.blockType = blockType;
	self.y = yPos;
	var buttonBlock = self.attachAsset(blockType, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8
	});
	self.down = function (x, y, obj) {
		if (!isPlayMode) {
			selectedBlockType = self.blockType;
			// Visual feedback
			tween(self, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 200
			});
			tween(self, {
				scaleX: 0.8,
				scaleY: 0.8
			}, {
				duration: 200
			});
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.lastIntersecting = {};
	self.update = function () {
		if (isPlayMode) {
			// Check collisions with placed blocks
			for (var i = 0; i < placedBlocks.length; i++) {
				var block = placedBlocks[i];
				var currentIntersecting = self.intersects(block);
				var wasIntersecting = self.lastIntersecting[i] || false;
				if (!wasIntersecting && currentIntersecting) {
					if (block.blockType === 'triggerBlock') {
						LK.getSound('trigger').play();
						LK.setScore(LK.getScore() + 10);
						scoreText.setText(LK.getScore());
						LK.effects.flashObject(block, 0xFFFF00, 500);
					} else if (block.blockType === 'barrierBlock') {
						// Push player back
						var dx = self.x - block.x;
						var dy = self.y - block.y;
						var distance = Math.sqrt(dx * dx + dy * dy);
						if (distance > 0) {
							self.x += dx / distance * 10;
							self.y += dy / distance * 10;
						}
					}
				}
				self.lastIntersecting[i] = currentIntersecting;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game state variables
var isPlayMode = false;
var isDragging = false;
var draggedBlock = null;
var selectedBlockType = 'buildBlock';
var placedBlocks = [];
var player = null;
// UI elements
var palette = game.addChild(LK.getAsset('palette', {
	anchorX: 0,
	anchorY: 0,
	x: 50,
	y: 200
}));
var modeButton = game.addChild(LK.getAsset('modeButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 125,
	y: 100
}));
var modeText = new Text2('BUILD', {
	size: 30,
	fill: 0xFFFFFF
});
modeText.anchor.set(0.5, 0.5);
modeText.x = 125;
modeText.y = 100;
game.addChild(modeText);
var scoreText = new Text2('Score: 0', {
	size: 40,
	fill: 0x333333
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var instructionText = new Text2('Drag blocks to build!', {
	size: 35,
	fill: 0x333333
});
instructionText.anchor.set(0.5, 0);
instructionText.y = 50;
LK.gui.top.addChild(instructionText);
// Create palette buttons
var buildButton = game.addChild(new PaletteButton('buildBlock', 250));
buildButton.x = 100;
var moveButton = game.addChild(new PaletteButton('moveBlock', 350));
moveButton.x = 100;
var triggerButton = game.addChild(new PaletteButton('triggerBlock', 450));
triggerButton.x = 100;
var barrierButton = game.addChild(new PaletteButton('barrierBlock', 550));
barrierButton.x = 100;
// Mode button functionality
modeButton.down = function (x, y, obj) {
	isPlayMode = !isPlayMode;
	if (isPlayMode) {
		modeText.setText('PLAY');
		instructionText.setText('Touch to move player!');
		// Create player if not exists
		if (!player) {
			player = game.addChild(new Player());
			player.x = 1000;
			player.y = 1000;
		}
		// Set original positions for moving blocks
		for (var i = 0; i < placedBlocks.length; i++) {
			if (placedBlocks[i].blockType === 'moveBlock') {
				placedBlocks[i].originalX = placedBlocks[i].x;
				placedBlocks[i].originalY = placedBlocks[i].y;
			}
		}
	} else {
		modeText.setText('BUILD');
		instructionText.setText('Drag blocks to build!');
	}
};
// Grid snap function
function snapToGrid(value) {
	return Math.round(value / 40) * 40;
}
// Game event handlers
game.move = function (x, y, obj) {
	if (isPlayMode && player) {
		player.x = x;
		player.y = y;
	} else if (isDragging && draggedBlock) {
		draggedBlock.x = snapToGrid(x);
		draggedBlock.y = snapToGrid(y);
	}
};
game.down = function (x, y, obj) {
	if (!isPlayMode && x > 200) {
		// Don't place blocks on palette area
		// Create new block
		var newBlock = new Block(selectedBlockType);
		newBlock.x = snapToGrid(x);
		newBlock.y = snapToGrid(y);
		newBlock.isPlaced = true;
		placedBlocks.push(newBlock);
		game.addChild(newBlock);
		LK.getSound('place').play();
		LK.setScore(LK.getScore() + 1);
		scoreText.setText('Score: ' + LK.getScore());
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
	draggedBlock = null;
};
game.update = function () {
	// Update score display
	scoreText.setText('Score: ' + LK.getScore());
	// Check win condition
	if (LK.getScore() >= 100) {
		LK.showYouWin();
	}
};