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

/**** 
* Classes
****/ 
var Grass = Container.expand(function () {
	var self = Container.call(this);
	var grassGraphics = self.attachAsset('grass', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	grassGraphics.alpha = 0.6;
	return self;
});
var Partridge = Container.expand(function () {
	var self = Container.call(this);
	var partridgeGraphics = self.attachAsset('partridge', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.catchRadius = 50;
	return self;
});
var Tick = Container.expand(function () {
	var self = Container.call(this);
	var tickGraphics = self.attachAsset('tick', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifespan = 3000; // 3 seconds to catch
	self.timeAlive = 0;
	self.caught = false;
	self.escaped = false;
	self.update = function () {
		if (self.caught || self.escaped) return;
		self.timeAlive += 16.67; // ~60fps
		// Gradually sink into grass (scale down and fade)
		var progress = self.timeAlive / self.lifespan;
		var scale = 1 - progress * 0.5;
		var alpha = 1 - progress * 0.3;
		tickGraphics.scaleX = Math.max(0.3, scale);
		tickGraphics.scaleY = Math.max(0.3, scale);
		tickGraphics.alpha = Math.max(0.4, alpha);
		if (self.timeAlive >= self.lifespan) {
			self.escaped = true;
			escapedTicks++;
			LK.getSound('escape').play();
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var partridge;
var ticks = [];
var grassPatches = [];
var lives = 3;
var tickSpawnRate = 60; // frames between spawns
var maxTicks = 5;
var escapedTicks = 0;
var maxEscapedTicks = 10;
var comboCount = 0;
var comboTimer = 0;
var comboTimeLimit = 120; // 2 seconds at 60fps
// Create grass background
for (var i = 0; i < 150; i++) {
	var grass = new Grass();
	grass.x = Math.random() * 2048;
	grass.y = Math.random() * 2732;
	grassPatches.push(grass);
	game.addChild(grass);
}
;
// Create partridge
partridge = new Partridge();
partridge.x = 1024;
partridge.y = 1366;
game.addChild(partridge);
// Create UI
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var livesTxt = new Text2('Lives: 3', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(livesTxt);
var comboTxt = new Text2('', {
	size: 50,
	fill: 0xFFD700
});
comboTxt.anchor.set(0.5, 0);
comboTxt.y = 120;
LK.gui.top.addChild(comboTxt);
// Dragging variables
var dragNode = null;
// Game functions
function spawnTick() {
	if (ticks.length >= maxTicks) return;
	var tick = new Tick();
	tick.x = Math.random() * 1848 + 100; // Keep away from edges
	tick.y = Math.random() * 2532 + 100;
	ticks.push(tick);
	game.addChild(tick);
}
function checkTickCatch(tick) {
	var dx = partridge.x - tick.x;
	var dy = partridge.y - tick.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	if (distance < partridge.catchRadius && !tick.caught && !tick.escaped) {
		tick.caught = true;
		// Update score
		var points = 10;
		if (comboCount > 0) {
			points += comboCount * 5; // Bonus for combo
		}
		LK.setScore(LK.getScore() + points);
		// Update combo
		comboCount++;
		comboTimer = comboTimeLimit;
		// Visual feedback
		tween(tick, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 300,
			easing: tween.easeOut
		});
		LK.getSound('catch').play();
		// Flash partridge green
		LK.effects.flashObject(partridge, 0x00FF00, 200);
		return true;
	}
	return false;
}
function updateUI() {
	scoreTxt.setText('Score: ' + LK.getScore());
	livesTxt.setText('Lives: ' + lives);
	if (comboCount > 1 && comboTimer > 0) {
		comboTxt.setText('Combo x' + comboCount + '!');
		comboTxt.alpha = comboTimer / comboTimeLimit;
	} else {
		comboTxt.setText('');
	}
}
function increaseDifficulty() {
	var score = LK.getScore();
	// Increase spawn rate
	if (score > 100) tickSpawnRate = Math.max(30, 60 - Math.floor(score / 100) * 5);
	// Increase max ticks
	if (score > 200) maxTicks = Math.min(10, 5 + Math.floor(score / 200));
	// Reduce tick lifespan
	if (score > 300) {
		var newLifespan = Math.max(1500, 3000 - Math.floor(score / 300) * 200);
		// Apply to new ticks only
	}
}
// Event handlers
game.down = function (x, y, obj) {
	dragNode = partridge;
	partridge.x = x;
	partridge.y = y;
};
game.move = function (x, y, obj) {
	if (dragNode) {
		partridge.x = x;
		partridge.y = y;
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main game loop
game.update = function () {
	// Spawn ticks
	if (LK.ticks % tickSpawnRate == 0) {
		spawnTick();
	}
	// Update ticks and check catches
	for (var i = ticks.length - 1; i >= 0; i--) {
		var tick = ticks[i];
		if (tick.caught || tick.escaped) {
			// Remove tick after delay
			if (tick.caught && tick.alpha <= 0) {
				tick.destroy();
				ticks.splice(i, 1);
			} else if (tick.escaped) {
				tick.destroy();
				ticks.splice(i, 1);
			}
			continue;
		}
		// Check if partridge caught tick
		checkTickCatch(tick);
	}
	// Update combo timer
	if (comboTimer > 0) {
		comboTimer--;
		if (comboTimer <= 0) {
			comboCount = 0;
		}
	}
	// Check game over condition
	if (escapedTicks >= maxEscapedTicks) {
		LK.effects.flashScreen(0xFF0000, 1000);
		LK.showGameOver();
		return;
	}
	// Update difficulty
	increaseDifficulty();
	// Update UI
	updateUI();
	// Win condition (survive long enough)
	if (LK.getScore() >= 500) {
		LK.showYouWin();
	}
};