/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0
});

/**** 
* Classes
****/ 
var AimArrow = Container.expand(function () {
	var self = Container.call(this);
	// Create arrow components
	var arrowLine = self.attachAsset('aimLine', {
		anchorX: 0.5,
		anchorY: 1.0,
		width: 10,
		height: 150
	});
	// Set initial visibility
	self.visible = false;
	// Update arrow position and rotation based on angle
	self.updateArrow = function (startX, startY, angle) {
		self.x = startX;
		self.y = startY;
		self.rotation = angle;
		self.visible = true;
	};
	self.hide = function () {
		self.visible = false;
	};
	return self;
});
var BowlingPin = Container.expand(function () {
	var self = Container.call(this);
	var pinGraphics = self.attachAsset('bowlingPin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isKnockedDown = false;
	self.velocityX = 0;
	self.velocityY = 0;
	self.friction = 0.95;
	self.knockDown = function () {
		if (!self.isKnockedDown) {
			self.isKnockedDown = true;
			// Randomize the pin's fall direction slightly
			self.velocityX = (Math.random() - 0.5) * 10;
			self.velocityY = Math.random() * 5;
			LK.getSound('pinHit').play();
			return true;
		}
		return false;
	};
	self.update = function () {
		if (self.isKnockedDown) {
			// Apply velocity
			self.x += self.velocityX;
			self.y += self.velocityY;
			// Apply friction
			self.velocityX *= self.friction;
			self.velocityY *= self.friction;
			// Rotation effect as the pin falls
			pinGraphics.rotation += 0.1;
			// Fade out effect
			pinGraphics.alpha *= 0.98;
			// Remove from game when almost invisible
			if (pinGraphics.alpha < 0.1) {
				self.visible = false;
			}
		}
	};
	self.reset = function () {
		self.isKnockedDown = false;
		self.velocityX = 0;
		self.velocityY = 0;
		pinGraphics.rotation = 0;
		pinGraphics.alpha = 1;
		self.visible = true;
	};
	return self;
});
var Penguin = Container.expand(function () {
	var self = Container.call(this);
	var penguinGraphics = self.attachAsset('penguin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Physics properties
	self.velocityX = 0;
	self.velocityY = 0;
	self.friction = 0.98; // Ice friction
	self.active = false;
	self.hasCollided = false;
	self.pullDistance = 0; // Store the pull distance for power calculation
	self.launch = function (angle, power) {
		self.velocityX = Math.cos(angle) * power;
		self.velocityY = Math.sin(angle) * power;
		self.active = true;
		self.hasCollided = false;
		LK.getSound('slide').play();
	};
	self.update = function () {
		if (!self.active) return;
		// Apply velocity
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Apply friction
		self.velocityX *= self.friction;
		self.velocityY *= self.friction;
		// Slight rotation effect for realism
		penguinGraphics.rotation += self.velocityX * 0.01;
		// Stop if velocity is very small
		if (Math.abs(self.velocityX) < 0.1 && Math.abs(self.velocityY) < 0.1) {
			self.active = false;
			self.velocityX = 0;
			self.velocityY = 0;
		}
		// Boundary checks for the bowling lane
		if (self.x < bowlingLane.x) {
			self.x = bowlingLane.x;
			self.velocityX *= -0.8; // Bounce off wall with some energy loss
		} else if (self.x > bowlingLane.x + bowlingLane.width) {
			self.x = bowlingLane.x + bowlingLane.width;
			self.velocityX *= -0.8;
		}
		// Top boundary check
		if (self.y < bowlingLane.y) {
			self.y = bowlingLane.y;
			self.velocityY *= -0.8;
		}
		// Bottom boundary (out of bounds)
		if (self.y > 2732) {
			self.active = false;
			self.reset();
		}
	};
	self.reset = function () {
		self.x = launchArea.x;
		self.y = launchArea.y - 250; // Move penguin further up the lane
		self.velocityX = 0;
		self.velocityY = 0;
		self.active = false;
		self.hasCollided = false;
		self.pullDistance = 0; // Reset pull distance
		penguinGraphics.rotation = 0;
	};
	return self;
});
var PowerMeter = Container.expand(function () {
	var self = Container.call(this);
	var meterBG = self.attachAsset('powerMeterBG', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var meter = self.attachAsset('powerMeter', {
		anchorX: 0.5,
		anchorY: 1.0,
		height: 0 // Start with no power
	});
	var maxPower = 300;
	self.power = 0;
	self.increasing = true;
	self.update = function () {
		if (self.visible) {
			if (self.increasing) {
				self.power += 5;
				if (self.power >= maxPower) {
					self.power = maxPower;
					self.increasing = false;
				}
			} else {
				self.power -= 5;
				if (self.power <= 0) {
					self.power = 0;
					self.increasing = true;
				}
			}
			// Update meter height based on power
			meter.height = self.power;
			meter.y = meterBG.y + meterBG.height / 2 - meter.height / 2;
		}
	};
	self.getPowerRatio = function () {
		return self.power / maxPower;
	};
	self.reset = function () {
		self.power = 0;
		self.increasing = true;
		meter.height = 0;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xC7E6F7
});

/**** 
* Game Code
****/ 
// Game constants
var MAX_POWER = 20;
var PIN_ROWS = 4;
var FRAMES = 10;
var PINS_PER_FRAME = 10;
// Game state variables
var currentFrame = 1;
var pinsKnockedDown = 0;
var totalScore = 0;
var aiming = false;
var powering = false;
var gameState = "aiming"; // States: aiming, powering, sliding, scoring, gameover
var aimAngle = -Math.PI / 2; // Start aiming straight up
// Create background
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
// Create bowling lane
var bowlingLane = game.addChild(LK.getAsset('bowlingLane', {
	anchorX: 0.5,
	anchorY: 0,
	x: 2048 / 2,
	y: 100
}));
// Create launch area
var launchArea = game.addChild(LK.getAsset('launchArea', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2400
}));
// Create the aiming line
var aimLine = game.addChild(LK.getAsset('aimLine', {
	anchorX: 0.5,
	anchorY: 1.0,
	x: launchArea.x,
	y: launchArea.y,
	visible: false
}));
// Create the directional arrow
var aimArrow = game.addChild(new AimArrow());
aimArrow.x = launchArea.x;
aimArrow.y = launchArea.y;
// Create the power meter
var powerMeter = game.addChild(new PowerMeter());
powerMeter.x = 1900;
powerMeter.y = 1400;
powerMeter.visible = false;
// Create the penguin
var penguin = game.addChild(new Penguin());
penguin.x = launchArea.x;
penguin.y = launchArea.y - 250; // Move penguin further up the lane
// Create bowling pins
var pins = [];
setupPins();
// Create UI elements
var frameText = new Text2('Frame: 1/10', {
	size: 70,
	fill: 0x000000
});
frameText.anchor.set(0.5, 0);
// Position frame text under the penguin's position
frameText.y = penguin.y + 150;
LK.gui.center.addChild(frameText);
var scoreText = new Text2('Score: 0', {
	size: 70,
	fill: 0x000000
});
scoreText.anchor.set(0.5, 0);
scoreText.y = 80;
LK.gui.top.addChild(scoreText);
var instructionText = new Text2('Tap and drag to pull penguin back, release to launch', {
	size: 50,
	fill: 0x000000
});
instructionText.anchor.set(0.5, 0);
instructionText.y = 180;
LK.gui.top.addChild(instructionText);
// Helper functions
function setupPins() {
	// Clear any existing pins
	for (var i = 0; i < pins.length; i++) {
		pins[i].destroy();
	}
	pins = [];
	// Create pin layout in traditional bowling triangle formation
	// Ensure pins are exactly centered on the lane
	var startX = 2048 / 2; // Center of screen
	var startY = 400; // Position from top
	var pinSpacingX = 80;
	var pinSpacingY = 90;
	// Standard bowling pin layout (4-3-2-1 triangle)
	// First row (back) - 4 pins
	for (var i = 0; i < 4; i++) {
		var pin = new BowlingPin();
		pin.x = startX + (i - 1.5) * pinSpacingX; // Perfectly centered
		pin.y = startY;
		pins.push(pin);
		game.addChild(pin);
	}
	// Second row - 3 pins
	for (var i = 0; i < 3; i++) {
		var pin = new BowlingPin();
		pin.x = startX + (i - 1) * pinSpacingX; // Centered relative to first row
		pin.y = startY + pinSpacingY;
		pins.push(pin);
		game.addChild(pin);
	}
	// Third row - 2 pins
	for (var i = 0; i < 2; i++) {
		var pin = new BowlingPin();
		pin.x = startX + (i - 0.5) * pinSpacingX; // Centered relative to second row
		pin.y = startY + 2 * pinSpacingY;
		pins.push(pin);
		game.addChild(pin);
	}
	// Fourth row (front) - 1 pin
	var pin = new BowlingPin();
	pin.x = startX; // Center pin
	pin.y = startY + 3 * pinSpacingY;
	pins.push(pin);
	game.addChild(pin);
	pinsKnockedDown = 0;
}
function updateAimLine() {
	aimLine.rotation = aimAngle;
	// Ensure the aim line points from the penguin position
	aimLine.x = launchArea.x;
	aimLine.y = launchArea.y;
}
function launchPenguin() {
	// Calculate power based on the pull distance
	var power = Math.min(penguin.pullDistance / 50, 1) * MAX_POWER;
	// Launch penguin from current position toward the launch area
	var launchAngle = aimAngle + Math.PI; // Reverse the angle to launch toward the pins
	penguin.launch(launchAngle, power);
	gameState = "sliding";
	powerMeter.visible = false;
	instructionText.setText("Watch the penguin slide!");
}
function checkCollisions() {
	if (!penguin.active || penguin.hasCollided) return;
	var newKnockdowns = 0;
	for (var i = 0; i < pins.length; i++) {
		var pin = pins[i];
		if (!pin.isKnockedDown && penguin.intersects(pin)) {
			if (pin.knockDown()) {
				newKnockdowns++;
				pinsKnockedDown++;
				// Update score
				totalScore += 1;
				updateScoreDisplay();
				// Create a chain reaction with nearby pins
				for (var j = 0; j < pins.length; j++) {
					if (i !== j && !pins[j].isKnockedDown) {
						var dx = pins[j].x - pin.x;
						var dy = pins[j].y - pin.y;
						var distance = Math.sqrt(dx * dx + dy * dy);
						if (distance < 100) {
							// Pins are close enough to affect each other
							pins[j].knockDown();
							pinsKnockedDown++;
							totalScore += 1;
							updateScoreDisplay();
						}
					}
				}
			}
		}
	}
	if (newKnockdowns > 0) {
		penguin.hasCollided = true;
		// Play strike sound if all pins are knocked down
		if (pinsKnockedDown === PINS_PER_FRAME) {
			LK.getSound('strike').play();
			LK.effects.flashScreen(0xFFFFFF, 500);
			instructionText.setText("STRIKE!");
		}
	}
}
function updateScoreDisplay() {
	scoreText.setText("Score: " + totalScore);
	// Update high score if needed
	if (totalScore > storage.highScore) {
		storage.highScore = totalScore;
	}
}
function nextFrame() {
	currentFrame++;
	if (currentFrame > FRAMES) {
		// Game over
		gameState = "gameover";
		instructionText.setText("Game Over! Final Score: " + totalScore);
		// Show game over screen after a brief delay
		LK.setTimeout(function () {
			LK.showGameOver();
		}, 2000);
	} else {
		// Setup for next frame
		frameText.setText("Frame: " + currentFrame + "/10");
		setupPins();
		penguin.reset();
		gameState = "aiming";
		instructionText.setText("Tap and drag backward to aim, release to launch");
	}
}
function checkGameStateTransition() {
	if (gameState === "sliding") {
		// Check if penguin has stopped
		if (!penguin.active) {
			// Wait a bit for pins to settle and then move to next frame
			LK.setTimeout(function () {
				nextFrame();
			}, 2000);
			gameState = "scoring";
		}
	}
}
// Event handlers
game.down = function (x, y, obj) {
	if (gameState === "aiming") {
		aiming = true;
		aimLine.visible = false;
		// Store original penguin position
		penguin.originalX = penguin.x;
		penguin.originalY = penguin.y;
		// Hide arrow when starting to aim
		aimArrow.hide();
	}
};
game.move = function (x, y, obj) {
	if (aiming) {
		// Calculate aim angle from penguin to opposite of pull direction
		var dx = launchArea.x - x;
		var dy = launchArea.y - y;
		// Calculate the distance of the pull for power
		var distance = Math.sqrt(dx * dx + dy * dy);
		// Limit the maximum drag distance
		var maxDrag = 300;
		distance = Math.min(distance, maxDrag);
		// Calculate the angle
		aimAngle = Math.atan2(dy, dx);
		// Move the penguin to the drag position
		penguin.x = launchArea.x - Math.cos(aimAngle) * distance;
		penguin.y = launchArea.y - Math.sin(aimAngle) * distance;
		// Update the directional arrow - start from penguin position pointing toward launch area
		aimArrow.updateArrow(penguin.x, penguin.y, aimAngle + Math.PI);
		// Store the pull distance for calculating power later
		penguin.pullDistance = distance;
	}
};
game.up = function (x, y, obj) {
	if (aiming) {
		aiming = false;
		// Hide the directional arrow
		aimArrow.hide();
		// Only launch if penguin was actually pulled back
		if (penguin.pullDistance > 10) {
			// Launch immediately after release
			launchPenguin();
		} else {
			// Reset penguin position if not pulled back enough
			penguin.x = penguin.originalX;
			penguin.y = penguin.originalY;
		}
	}
};
// Game update loop
game.update = function () {
	if (gameState === "sliding") {
		penguin.update();
		// Update pin physics
		for (var i = 0; i < pins.length; i++) {
			pins[i].update();
		}
		checkCollisions();
		checkGameStateTransition();
	}
};
// Start background music
LK.playMusic('gameMusic');