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

/**** 
* Classes
****/ 
var PoliceCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('policeCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.maxSpeed = 15;
	self.acceleration = 0.5;
	self.friction = 0.88;
	self.vx = 0;
	self.vy = 0;
	self.targetVx = 0;
	self.targetVy = 0;
	self.steering = 0.15;
	self.rotation = 0;
	self.update = function () {
		self.vx += (self.targetVx - self.vx) * self.steering;
		self.vy += (self.targetVy - self.vy) * self.steering;
		self.vx *= self.friction;
		self.vy *= self.friction;
		var speed = Math.sqrt(self.vx * self.vx + self.vy * self.vy);
		if (speed > 0) {
			self.rotation = Math.atan2(self.vy, self.vx);
		}
		self.x += self.vx;
		self.y += self.vy;
		if (self.x < 60) self.x = 60;
		if (self.x > 2048 - 60) self.x = 2048 - 60;
		if (self.y < 60) self.y = 60;
		if (self.y > 2732 - 60) self.y = 2732 - 60;
	};
	return self;
});
var RobberCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('robberCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.vx = 0;
	self.vy = 0;
	self.speed = 4 + Math.random() * 3;
	self.targetVx = 0;
	self.targetVy = 0;
	self.steering = 0.1;
	self.directionChangeTimer = 0;
	self.directionChangeInterval = 60 + Math.floor(Math.random() * 120);
	self.lastX = self.x;
	self.lastY = self.y;
	self.lastIntersecting = false;
	self.rotation = 0;
	self.friction = 0.90;
	self.update = function () {
		self.directionChangeTimer--;
		if (self.directionChangeTimer <= 0) {
			var angle = Math.random() * Math.PI * 2;
			self.targetVx = Math.cos(angle) * self.speed;
			self.targetVy = Math.sin(angle) * self.speed;
			self.directionChangeTimer = self.directionChangeInterval;
			self.directionChangeInterval = 60 + Math.floor(Math.random() * 120);
		}
		self.vx += (self.targetVx - self.vx) * self.steering;
		self.vy += (self.targetVy - self.vy) * self.steering;
		self.vx *= self.friction;
		self.vy *= self.friction;
		var speed = Math.sqrt(self.vx * self.vx + self.vy * self.vy);
		if (speed > 0) {
			self.rotation = Math.atan2(self.vy, self.vx);
		}
		self.lastX = self.x;
		self.lastY = self.y;
		self.x += self.vx;
		self.y += self.vy;
		if (self.x < 50) self.x = 50;
		if (self.x > 2048 - 50) self.x = 2048 - 50;
		if (self.y < 50) self.y = 50;
		if (self.y > 2732 - 50) self.y = 2732 - 50;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
var policeCar = game.addChild(new PoliceCar());
policeCar.x = 1024;
policeCar.y = 2400;
var robberCars = [];
var score = 0;
var spawnTimer = 0;
var spawnInterval = 120;
var difficultyMultiplier = 1;
var targetScore = 50;
var dragActive = false;
var dragOffsetX = 0;
var dragOffsetY = 0;
var scoreTxt = new Text2('Score: 0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
game.down = function (x, y, obj) {
	dragActive = true;
	dragOffsetX = policeCar.x - x;
	dragOffsetY = policeCar.y - y;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragActive = false;
};
function handleMove(x, y, obj) {
	if (dragActive) {
		var targetX = x + dragOffsetX;
		var targetY = y + dragOffsetY;
		var dx = targetX - policeCar.x;
		var dy = targetY - policeCar.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			var maxAccel = policeCar.maxSpeed;
			policeCar.targetVx = dx / distance * maxAccel;
			policeCar.targetVy = dy / distance * maxAccel;
		}
	}
}
game.move = handleMove;
game.update = function () {
	policeCar.update();
	spawnTimer--;
	if (spawnTimer <= 0) {
		var newRobber = game.addChild(new RobberCar());
		var side = Math.floor(Math.random() * 4);
		if (side === 0) {
			newRobber.x = Math.random() * 2048;
			newRobber.y = -50;
		} else if (side === 1) {
			newRobber.x = 2048 + 50;
			newRobber.y = Math.random() * 2732;
		} else if (side === 2) {
			newRobber.x = Math.random() * 2048;
			newRobber.y = 2732 + 50;
		} else {
			newRobber.x = -50;
			newRobber.y = Math.random() * 2732;
		}
		robberCars.push(newRobber);
		spawnTimer = Math.max(60, spawnInterval - Math.floor(difficultyMultiplier * 10));
	}
	for (var a = robberCars.length - 1; a >= 0; a--) {
		var robber = robberCars[a];
		robber.update();
		var offScreen = robber.x < -100 || robber.x > 2148 || robber.y < -100 || robber.y > 2832;
		if (offScreen) {
			robber.destroy();
			robberCars.splice(a, 1);
			continue;
		}
		var currentIntersecting = policeCar.intersects(robber);
		if (!robber.lastIntersecting && currentIntersecting) {
			score += 10;
			difficultyMultiplier += 0.1;
			scoreTxt.setText('Score: ' + score);
			LK.getSound('apprehend').play();
			LK.effects.flashScreen(0x00ff00, 300);
			robber.destroy();
			robberCars.splice(a, 1);
			if (score >= targetScore) {
				LK.showYouWin();
			}
			continue;
		}
		robber.lastIntersecting = currentIntersecting;
	}
};
LK.playMusic('bgmusic');