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

/**** 
* Classes
****/ 
// Claw class
var Claw = Container.expand(function () {
	var self = Container.call(this);
	// Arm
	var arm = self.attachAsset('clawArm', {
		anchorX: 0.5,
		anchorY: 0,
		x: 0,
		y: 0
	});
	// Claw head
	var head = self.attachAsset('clawHead', {
		anchorX: 0.5,
		anchorY: 0,
		x: 0,
		y: arm.height
	});
	// State
	self.swingAngle = 0; // in radians
	self.swingDir = 1; // 1 or -1
	self.swingSpeed = 0.025; // radians per tick
	self.swingMax = Math.PI / 3; // 60 deg left/right
	self.state = 'swing'; // 'swing', 'extend', 'retract', 'grabbed'
	self.length = arm.height; // current arm length
	self.baseLength = arm.height;
	self.maxLength = GAME_HEIGHT - 100; // how far the claw can extend (let rope go to bottom)
	self.speed = 32; // pixels per tick when extending
	self.retractSpeed = 32; // default retract speed
	self.grabbedObj = null; // reference to grabbed object
	// Update arm and head positions based on length and angle
	self.updateClaw = function () {
		var dx = Math.sin(self.swingAngle) * self.length;
		var dy = Math.cos(self.swingAngle) * self.length;
		arm.rotation = -self.swingAngle;
		arm.height = self.length;
		head.x = dx;
		head.y = dy;
		head.rotation = -self.swingAngle;
		if (self.grabbedObj) {
			self.grabbedObj.x = self.x + dx;
			self.grabbedObj.y = self.y + dy + head.height / 2;
		}
	};
	// Called every tick
	self.update = function () {
		if (self.state === 'swing') {
			self.swingAngle += self.swingDir * self.swingSpeed;
			if (self.swingAngle > self.swingMax) {
				self.swingAngle = self.swingMax;
				self.swingDir = -1;
			}
			if (self.swingAngle < -self.swingMax) {
				self.swingAngle = -self.swingMax;
				self.swingDir = 1;
			}
		} else if (self.state === 'extend') {
			self.length += self.speed;
			if (self.length >= self.maxLength) {
				self.length = self.maxLength;
				self.state = 'retract';
			}
		} else if (self.state === 'retract') {
			self.length -= self.retractSpeed;
			if (self.length <= self.baseLength) {
				self.length = self.baseLength;
				self.state = 'swing';
				if (self.grabbedObj) {
					// Drop object at top
					self.grabbedObj.onCollected();
					self.grabbedObj = null;
				}
			}
		} else if (self.state === 'grabbed') {
			// Wait for retract to finish
			self.length -= self.retractSpeed;
			if (self.length <= self.baseLength) {
				self.length = self.baseLength;
				self.state = 'swing';
				if (self.grabbedObj) {
					self.grabbedObj.onCollected();
					self.grabbedObj = null;
				}
			}
		}
		self.updateClaw();
	};
	// Start extending
	self.startExtend = function () {
		if (self.state === 'swing') {
			self.state = 'extend';
			LK.getSound('grab').play();
		}
	};
	// Called when an object is grabbed
	self.grabObject = function (obj) {
		self.grabbedObj = obj;
		self.state = 'grabbed';
		// Set retract speed based on object type
		self.retractSpeed = obj.retractSpeed;
		LK.getSound(obj.grabSound).play();
	};
	// Called when nothing is grabbed (hit ground)
	self.miss = function () {
		self.state = 'retract';
		self.retractSpeed = 64; //{L} // Faster retract when empty
	};
	return self;
});
// Base class for all underground objects
var UndergroundObject = Container.expand(function () {
	var self = Container.call(this);
	self.value = 0;
	self.retractSpeed = 32;
	self.grabSound = 'grab';
	self.collectedSound = 'collect';
	self.collected = false;
	// Called when collected
	self.onCollected = function () {
		if (self.collected) return;
		self.collected = true;
		LK.getSound(self.collectedSound).play();
		self.visible = false;
		if (typeof self.onScore === 'function') self.onScore();
		self.destroy();
	};
	return self;
});
// Rock
var Rock = UndergroundObject.expand(function () {
	var self = UndergroundObject.call(this);
	var rock = self.attachAsset('rock', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 50;
	self.retractSpeed = 6; // very slow
	self.grabSound = 'rockhit';
	self.collectedSound = 'rockhit';
	return self;
});
// Small gold nugget
var GoldSmall = UndergroundObject.expand(function () {
	var self = UndergroundObject.call(this);
	var gold = self.attachAsset('goldSmall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 250;
	self.retractSpeed = 24; // medium
	self.grabSound = 'grab';
	self.collectedSound = 'collect';
	return self;
});
// Gold nugget
var Gold = UndergroundObject.expand(function () {
	var self = UndergroundObject.call(this);
	var gold = self.attachAsset('gold', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 500;
	self.retractSpeed = 12; // slow
	self.grabSound = 'grab';
	self.collectedSound = 'collect';
	return self;
});
// Gem
var Gem = UndergroundObject.expand(function () {
	var self = UndergroundObject.call(this);
	var gem = self.attachAsset('gem', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 800;
	self.retractSpeed = 32; // fast
	self.grabSound = 'grab';
	self.collectedSound = 'collect';
	return self;
});
// Dynamite trap
var Dynamite = UndergroundObject.expand(function () {
	var self = UndergroundObject.call(this);
	var dynamite = self.attachAsset('dynamite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 0;
	self.retractSpeed = 40; // fast retract
	self.grabSound = 'dynamite';
	self.collectedSound = 'dynamite';
	self.onCollected = function () {
		if (self.collected) return;
		self.collected = true;
		LK.getSound(self.collectedSound).play();
		// Flash screen red to indicate explosion
		LK.effects.flashScreen(0xff0000, 800);
		// Remove some score as penalty
		score = Math.max(0, score - 400);
		LK.setScore(score);
		scoreTxt.setText(score);
		self.visible = false;
		self.destroy();
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x8B5A2B // brown
});

/**** 
* Game Code
****/ 
// Game constants
// Claw arm (rectangle)
// Claw head (ellipse)
// Gold nugget (ellipse)
// Small gold nugget
// Rock (ellipse)
// Gem (ellipse)
// Sound for grabbing
// Sound for collecting
// Sound for hitting rock
// Music
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var GROUND_Y = 700; // y position where underground objects start
var LEVEL_TIME = 60; // seconds
var LEVEL_GOAL = 1500; // gold needed to win
// Level and difficulty progression
var level = 1;
var maxLevel = 10;
var objects = [];
var claw = null;
var score = 0;
var timer = 0;
var timeLeft = LEVEL_TIME;
var goal = LEVEL_GOAL;
var gameActive = true;
// GUI
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFF8C0
});
scoreTxt.anchor.set(0, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.x = 100;
scoreTxt.y = 0;
// Goal text
var goalTxt = new Text2('Goal: ' + goal, {
	size: 80,
	fill: 0xFFE066
});
goalTxt.anchor.set(0, 0);
LK.gui.top.addChild(goalTxt);
goalTxt.x = 100;
goalTxt.y = 120;
var timerTxt = new Text2('60', {
	size: 100,
	fill: 0xFFFFFF
});
timerTxt.anchor.set(1, 0);
LK.gui.top.addChild(timerTxt);
timerTxt.y = 120;
// Level text
var levelTxt = new Text2('Level: ' + level, {
	size: 80,
	fill: 0xB0E0E6
});
levelTxt.anchor.set(1, 0);
LK.gui.top.addChild(levelTxt);
levelTxt.y = 0;
// Place GUI elements, but not in top left 100x100
timerTxt.x = LK.gui.top.width - 120;
levelTxt.x = LK.gui.top.width - 120;
// Place claw at top center
claw = new Claw();
claw.x = GAME_WIDTH / 2;
claw.y = 0;
game.addChild(claw);
// Underground object spawn positions
function spawnObjects() {
	// Clear previous
	for (var i = 0; i < objects.length; i++) {
		objects[i].destroy();
	}
	objects = [];
	// Difficulty scaling
	var bigGoldCount = 4 + Math.floor(level / 2);
	var smallGoldCount = 6 + level;
	var rockCount = 6 + level * 2;
	var gemCount = 3 + Math.floor(level / 2);
	var dynamiteCount = 2 + Math.floor(level / 2);
	// Create all objects in order: gold, diamonds, dynamite, rocks, then mix
	var allObjs = [];
	// Gold (big)
	for (var i = 0; i < bigGoldCount; i++) {
		var g = new Gold();
		g.onScore = function () {
			score += this.value;
			LK.setScore(score);
			scoreTxt.setText(score);
		};
		allObjs.push(g);
	}
	// Gold (small)
	for (var i = 0; i < smallGoldCount; i++) {
		var gs = new GoldSmall();
		gs.onScore = function () {
			score += this.value;
			LK.setScore(score);
			scoreTxt.setText(score);
		};
		allObjs.push(gs);
	}
	// Gems
	for (var i = 0; i < gemCount; i++) {
		var gem = new Gem();
		gem.onScore = function () {
			score += this.value;
			LK.setScore(score);
			scoreTxt.setText(score);
		};
		allObjs.push(gem);
	}
	// Dynamite
	for (var i = 0; i < dynamiteCount; i++) {
		var d = new Dynamite();
		allObjs.push(d);
	}
	// Rocks
	for (var i = 0; i < rockCount; i++) {
		var r = new Rock();
		r.onScore = function () {
			score += this.value;
			LK.setScore(score);
			scoreTxt.setText(score);
		};
		allObjs.push(r);
	}
	// Shuffle allObjs array
	for (var i = allObjs.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = allObjs[i];
		allObjs[i] = allObjs[j];
		allObjs[j] = temp;
	}
	// Place objects in the play area, avoiding overlap
	var gridCols = 8;
	var gridRows = Math.ceil(allObjs.length / gridCols);
	var cellW = Math.floor((GAME_WIDTH - 400) / gridCols);
	var cellH = Math.floor((GAME_HEIGHT - GROUND_Y - 400) / gridRows);
	var usedCells = [];
	for (var i = 0; i < allObjs.length; i++) {
		var obj = allObjs[i];
		// Find a free cell
		var placed = false;
		var attempts = 0;
		while (!placed && attempts < 30) {
			var col = Math.floor(Math.random() * gridCols);
			var row = Math.floor(Math.random() * gridRows);
			var cellIdx = row * gridCols + col;
			if (usedCells.indexOf(cellIdx) === -1) {
				usedCells.push(cellIdx);
				obj.x = 200 + col * cellW + Math.floor(cellW / 2);
				obj.y = GROUND_Y + 200 + row * cellH + Math.floor(cellH / 2);
				placed = true;
			}
			attempts++;
		}
		game.addChild(obj);
		objects.push(obj);
	}
}
spawnObjects();
// Timer
timer = LK.setInterval(function () {
	if (!gameActive) return;
	timeLeft -= 1;
	if (timeLeft < 0) timeLeft = 0;
	timerTxt.setText(timeLeft);
	if (timeLeft === 0) {
		gameActive = false;
		// Game over
		LK.effects.flashScreen(0x000000, 800);
		LK.showGameOver();
	}
}, 1000);
// Draw a dot at the top center to send the rope down
var dropDot = LK.getAsset('centerCircle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.5,
	scaleY: 0.5,
	x: GAME_WIDTH / 2,
	y: 80
});
game.addChild(dropDot);
// Only trigger on dot press, not anywhere
dropDot.down = function (x, y, obj) {
	if (!gameActive) return;
	if (claw.state === 'swing') {
		claw.startExtend();
	}
};
// Touch/click anywhere else does nothing
game.down = function (x, y, obj) {
	// No-op, handled by dropDot
};
// Main update loop
game.update = function () {
	if (!gameActive) return;
	// Claw update handled in class
	// If claw is extending, check for collision with objects
	if (claw.state === 'extend') {
		// Get claw head position
		var dx = Math.sin(claw.swingAngle) * claw.length;
		var dy = Math.cos(claw.swingAngle) * claw.length;
		var cx = claw.x + dx;
		var cy = claw.y + dy + 30; // 30: half head height
		// Check for collision with any object
		for (var i = 0; i < objects.length; i++) {
			var obj = objects[i];
			if (obj.collected) continue;
			// Simple circle collision
			var dist = Math.sqrt((obj.x - cx) * (obj.x - cx) + (obj.y - cy) * (obj.y - cy));
			var r = 60; // approx radius
			if (dist < r + 40) {
				// Grab object
				claw.grabObject(obj);
				// Dynamite handles penalty in its onCollected
				break;
			}
		}
		// If reached max length and nothing grabbed, retract
		if (claw.length >= claw.maxLength && claw.state === 'extend') {
			claw.miss();
		}
	}
	// Win condition
	if (score >= goal && gameActive) {
		gameActive = false;
		LK.effects.flashScreen(0xffff00, 800);
		// Level up logic
		if (level < maxLevel) {
			level += 1;
			// Increase goal and decrease time for next level
			goal = LEVEL_GOAL + level * 800;
			timeLeft = LEVEL_TIME - Math.min(level * 3, 30); // reduce time, but not below 30s
			goalTxt.setText('Goal: ' + goal);
			timerTxt.setText(timeLeft);
			levelTxt.setText('Level: ' + level);
			score = 0;
			LK.setScore(score);
			scoreTxt.setText(score);
			// Respawn objects for new level
			spawnObjects();
			gameActive = true;
		} else {
			LK.showYouWin();
		}
	}
};
// Play background music
LK.playMusic('goldminerbg', {
	fade: {
		start: 0,
		end: 1,
		duration: 1000
	}
});

===================================================================
--- original.js
+++ change.js
@@ -30,9 +30,9 @@
 	self.swingMax = Math.PI / 3; // 60 deg left/right
 	self.state = 'swing'; // 'swing', 'extend', 'retract', 'grabbed'
 	self.length = arm.height; // current arm length
 	self.baseLength = arm.height;
-	self.maxLength = 1700; // how far the claw can extend (increased for longer rope)
+	self.maxLength = GAME_HEIGHT - 100; // how far the claw can extend (let rope go to bottom)
 	self.speed = 32; // pixels per tick when extending
 	self.retractSpeed = 32; // default retract speed
 	self.grabbedObj = null; // reference to grabbed object
 	// Update arm and head positions based on length and angle