===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,486 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Cowboy (player) class
+var Cowboy = Container.expand(function () {
+	var self = Container.call(this);
+	var cowboySprite = self.attachAsset('cowboy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = 60; // for collision
+	self.whipCooldown = 0;
+	self.revolverCooldown = 0;
+	self.pumpUnlocked = false;
+	self.upgrades = 0;
+	self.revolverBaseCooldown = 180; // 3 seconds at 60fps
+	self.revolverCooldownTime = self.revolverBaseCooldown;
+	self.pumpCooldown = 0;
+	return self;
+});
+// Enemy class
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemySprite = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = 50;
+	self.speed = 2;
+	self.dirX = 0;
+	self.dirY = 0;
+	self.hp = 1;
+	self.update = function () {
+		self.x += self.dirX * self.speed;
+		self.y += self.dirY * self.speed;
+	};
+	return self;
+});
+// Pump-action bullet class (stronger, wider)
+var PumpBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletSprite = self.attachAsset('pump_bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = 20;
+	self.speed = 22;
+	self.dirX = 0;
+	self.dirY = 0;
+	self.update = function () {
+		self.x += self.dirX * self.speed;
+		self.y += self.dirY * self.speed;
+	};
+	return self;
+});
+// Revolver bullet class
+var RevolverBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletSprite = self.attachAsset('revolver_bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = 15;
+	self.speed = 18;
+	self.dirX = 0;
+	self.dirY = 0;
+	self.update = function () {
+		self.x += self.dirX * self.speed;
+		self.y += self.dirY * self.speed;
+	};
+	return self;
+});
+// Upgrade drop class
+var UpgradeDrop = Container.expand(function () {
+	var self = Container.call(this);
+	var upgradeSprite = self.attachAsset('upgrade', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = 30;
+	self.update = function () {};
+	return self;
+});
+// Whip attack class (short-lived, close range)
+var WhipAttack = Container.expand(function () {
+	var self = Container.call(this);
+	var whipSprite = self.attachAsset('whip', {
+		anchorX: 0.0,
+		anchorY: 0.5
+	});
+	self.radius = 60;
+	self.dirX = 0;
+	self.dirY = 0;
+	self.lifetime = 10; // frames
+	self.update = function () {
+		self.lifetime--;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2e7d32 // Forest green
+});
+
+/**** 
+* Game Code
+****/ 
+// Pump-action bullet
+// Upgrade drop
+// Enemy
+// Revolver bullet
+// Whip (short range attack)
+// Cowboy (player)
+// Game area
+var GAME_W = 2048;
+var GAME_H = 2732;
+// Center position
+var centerX = GAME_W / 2;
+var centerY = GAME_H / 2;
+// Player
+var cowboy = new Cowboy();
+cowboy.x = centerX;
+cowboy.y = centerY;
+game.addChild(cowboy);
+// Arrays for game objects
+var enemies = [];
+var bullets = [];
+var whipAttacks = [];
+var upgrades = [];
+// Score and UI
+var score = 0;
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Weapon cooldown UI
+var revolverTxt = new Text2('Revolver: Ready', {
+	size: 60,
+	fill: "#fff"
+});
+revolverTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(revolverTxt);
+revolverTxt.y = 130;
+// Upgrade UI
+var upgradeTxt = new Text2('Upgrades: 0/3', {
+	size: 60,
+	fill: 0xFFD700
+});
+upgradeTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(upgradeTxt);
+upgradeTxt.y = 200;
+// Difficulty
+var wave = 1;
+var spawnTimer = 0;
+var spawnInterval = 90; // frames
+var enemySpeed = 2;
+// Dragging
+var dragNode = null;
+// Helper: distance
+function dist(ax, ay, bx, by) {
+	var dx = ax - bx;
+	var dy = ay - by;
+	return Math.sqrt(dx * dx + dy * dy);
+}
+// Helper: clamp
+function clamp(val, min, max) {
+	return Math.max(min, Math.min(max, val));
+}
+// Helper: get direction vector
+function getDir(ax, ay, bx, by) {
+	var dx = bx - ax;
+	var dy = by - ay;
+	var len = Math.sqrt(dx * dx + dy * dy);
+	if (len === 0) return {
+		x: 0,
+		y: 0
+	};
+	return {
+		x: dx / len,
+		y: dy / len
+	};
+}
+// Helper: spawn enemy at random edge
+function spawnEnemy() {
+	var edge = Math.floor(Math.random() * 4); // 0: top, 1: right, 2: bottom, 3: left
+	var ex, ey;
+	if (edge === 0) {
+		// top
+		ex = Math.random() * (GAME_W - 200) + 100;
+		ey = -80;
+	} else if (edge === 1) {
+		// right
+		ex = GAME_W + 80;
+		ey = Math.random() * (GAME_H - 200) + 100;
+	} else if (edge === 2) {
+		// bottom
+		ex = Math.random() * (GAME_W - 200) + 100;
+		ey = GAME_H + 80;
+	} else {
+		// left
+		ex = -80;
+		ey = Math.random() * (GAME_H - 200) + 100;
+	}
+	var enemy = new Enemy();
+	enemy.x = ex;
+	enemy.y = ey;
+	var dir = getDir(ex, ey, cowboy.x, cowboy.y);
+	enemy.dirX = dir.x;
+	enemy.dirY = dir.y;
+	enemy.speed = enemySpeed + Math.random() * 0.5 + (wave - 1) * 0.2;
+	enemy.hp = 1 + Math.floor(wave / 5);
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+// Helper: spawn upgrade at (x, y)
+function spawnUpgrade(x, y) {
+	var upg = new UpgradeDrop();
+	upg.x = x;
+	upg.y = y;
+	upgrades.push(upg);
+	game.addChild(upg);
+}
+// Handle movement (dragging cowboy)
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		// Clamp to game area, avoid top left 100x100
+		dragNode.x = clamp(x, 120, GAME_W - 120);
+		dragNode.y = clamp(y, 120, GAME_H - 120);
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	// Only allow drag if touch is on cowboy
+	var dx = x - cowboy.x;
+	var dy = y - cowboy.y;
+	if (dx * dx + dy * dy < 80 * 80) {
+		dragNode = cowboy;
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Handle tap/attack (whip or revolver)
+game.tap = function (x, y, obj) {
+	// Not used, as LK does not have tap event
+};
+// Touch: whip (short range, no cooldown)
+game.down2 = function (x, y, obj) {
+	// Not used, as LK does not have down2 event
+};
+// Touch: fire revolver (if ready)
+game.doubletap = function (x, y, obj) {
+	// Not used, as LK does not have doubletap event
+};
+// Whip attack: on quick tap (simulate with up event if not dragging)
+game.up = function (x, y, obj) {
+	if (!dragNode) {
+		// Whip attack in direction of tap
+		if (cowboy.whipCooldown <= 0) {
+			var dir = getDir(cowboy.x, cowboy.y, x, y);
+			var whip = new WhipAttack();
+			whip.x = cowboy.x + dir.x * 60;
+			whip.y = cowboy.y + dir.y * 60;
+			whip.dirX = dir.x;
+			whip.dirY = dir.y;
+			whip.rotation = Math.atan2(dir.y, dir.x);
+			whipAttacks.push(whip);
+			game.addChild(whip);
+			cowboy.whipCooldown = 20; // 1/3 second
+			// Animate whip
+			tween(whip, {
+				alpha: 0
+			}, {
+				duration: 200,
+				easing: tween.linear,
+				onFinish: function onFinish() {
+					whip.alpha = 1;
+				}
+			});
+		}
+	}
+	dragNode = null;
+};
+// Fire revolver: on long press (simulate with two-finger tap or hold, but here use a button)
+var fireBtn = new Text2('REVOLVER', {
+	size: 80,
+	fill: "#fff"
+});
+fireBtn.anchor.set(0.5, 0.5);
+LK.gui.bottom.addChild(fireBtn);
+fireBtn.y = -120;
+fireBtn.x = 0;
+fireBtn.interactive = true;
+fireBtn.down = function (x, y, obj) {
+	if (cowboy.pumpUnlocked) {
+		// Fire pump-action (spread shot)
+		if (cowboy.pumpCooldown <= 0) {
+			for (var i = -1; i <= 1; i++) {
+				var dir = getDir(cowboy.x, cowboy.y, cowboy.x + Math.cos(game.lastAimAngle + i * 0.18) * 100, cowboy.y + Math.sin(game.lastAimAngle + i * 0.18) * 100);
+				var bullet = new PumpBullet();
+				bullet.x = cowboy.x + dir.x * 70;
+				bullet.y = cowboy.y + dir.y * 70;
+				bullet.dirX = dir.x;
+				bullet.dirY = dir.y;
+				bullet.rotation = Math.atan2(dir.y, dir.x);
+				bullets.push(bullet);
+				game.addChild(bullet);
+			}
+			cowboy.pumpCooldown = 90; // 1.5s
+		}
+	} else {
+		// Fire revolver
+		if (cowboy.revolverCooldown <= 0) {
+			// Aim at last direction of movement or default right
+			var angle = game.lastAimAngle || 0;
+			var dir = {
+				x: Math.cos(angle),
+				y: Math.sin(angle)
+			};
+			var bullet = new RevolverBullet();
+			bullet.x = cowboy.x + dir.x * 70;
+			bullet.y = cowboy.y + dir.y * 70;
+			bullet.dirX = dir.x;
+			bullet.dirY = dir.y;
+			bullet.rotation = Math.atan2(dir.y, dir.x);
+			bullets.push(bullet);
+			game.addChild(bullet);
+			cowboy.revolverCooldown = cowboy.revolverCooldownTime;
+		}
+	}
+};
+// Track last aim direction (for revolver)
+game.lastAimAngle = 0;
+game.move = function (x, y, obj) {
+	if (dragNode) {
+		dragNode.x = clamp(x, 120, GAME_W - 120);
+		dragNode.y = clamp(y, 120, GAME_H - 120);
+	}
+	// Update aim angle
+	var dx = x - cowboy.x;
+	var dy = y - cowboy.y;
+	if (dx * dx + dy * dy > 10 * 10) {
+		game.lastAimAngle = Math.atan2(dy, dx);
+	}
+};
+// Main update loop
+game.update = function () {
+	// Cooldowns
+	if (cowboy.whipCooldown > 0) cowboy.whipCooldown--;
+	if (cowboy.revolverCooldown > 0) cowboy.revolverCooldown--;
+	if (cowboy.pumpCooldown > 0) cowboy.pumpCooldown--;
+	// Update UI
+	scoreTxt.setText(score);
+	if (cowboy.pumpUnlocked) {
+		revolverTxt.setText('Pump-Action: ' + (cowboy.pumpCooldown > 0 ? (cowboy.pumpCooldown / 60).toFixed(1) + 's' : 'Ready'));
+	} else {
+		revolverTxt.setText('Revolver: ' + (cowboy.revolverCooldown > 0 ? (cowboy.revolverCooldown / 60).toFixed(1) + 's' : 'Ready'));
+	}
+	upgradeTxt.setText('Upgrades: ' + cowboy.upgrades + '/3');
+	// Spawn enemies
+	spawnTimer--;
+	if (spawnTimer <= 0) {
+		spawnEnemy();
+		spawnTimer = Math.max(30, spawnInterval - wave * 2);
+	}
+	// Increase difficulty
+	if (LK.ticks % 600 === 0) {
+		// every 10s
+		wave++;
+		enemySpeed += 0.2;
+	}
+	// Update enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var e = enemies[i];
+		e.update();
+		// Re-aim at player
+		var dir = getDir(e.x, e.y, cowboy.x, cowboy.y);
+		e.dirX = dir.x;
+		e.dirY = dir.y;
+		// Out of bounds
+		if (e.x < -200 || e.x > GAME_W + 200 || e.y < -200 || e.y > GAME_H + 200) {
+			e.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Collide with player
+		if (dist(e.x, e.y, cowboy.x, cowboy.y) < e.radius + cowboy.radius - 10) {
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var b = bullets[i];
+		b.update();
+		// Out of bounds
+		if (b.x < -100 || b.x > GAME_W + 100 || b.y < -100 || b.y > GAME_H + 100) {
+			b.destroy();
+			bullets.splice(i, 1);
+			continue;
+		}
+		// Hit enemy
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var e = enemies[j];
+			if (dist(b.x, b.y, e.x, e.y) < b.radius + e.radius) {
+				e.hp--;
+				if (e.hp <= 0) {
+					// Drop upgrade with 1/5 chance
+					if (Math.random() < 0.2) {
+						spawnUpgrade(e.x, e.y);
+					}
+					e.destroy();
+					enemies.splice(j, 1);
+					score++;
+				}
+				b.destroy();
+				bullets.splice(i, 1);
+				break;
+			}
+		}
+	}
+	// Update whip attacks
+	for (var i = whipAttacks.length - 1; i >= 0; i--) {
+		var w = whipAttacks[i];
+		w.update();
+		// Hit enemy
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var e = enemies[j];
+			if (dist(w.x + w.dirX * 40, w.y + w.dirY * 40, e.x, e.y) < w.radius + e.radius) {
+				e.hp--;
+				if (e.hp <= 0) {
+					if (Math.random() < 0.2) {
+						spawnUpgrade(e.x, e.y);
+					}
+					e.destroy();
+					enemies.splice(j, 1);
+					score++;
+				}
+			}
+		}
+		// Lifetime
+		if (w.lifetime <= 0) {
+			w.destroy();
+			whipAttacks.splice(i, 1);
+		}
+	}
+	// Update upgrades
+	for (var i = upgrades.length - 1; i >= 0; i--) {
+		var u = upgrades[i];
+		// Move toward player if close
+		if (dist(u.x, u.y, cowboy.x, cowboy.y) < 300) {
+			var dir = getDir(u.x, u.y, cowboy.x, cowboy.y);
+			u.x += dir.x * 8;
+			u.y += dir.y * 8;
+		}
+		// Collect
+		if (dist(u.x, u.y, cowboy.x, cowboy.y) < u.radius + cowboy.radius) {
+			cowboy.upgrades++;
+			if (cowboy.upgrades === 1) {
+				cowboy.revolverCooldownTime = Math.max(90, cowboy.revolverCooldownTime - 60); // 2s
+			} else if (cowboy.upgrades === 2) {
+				cowboy.revolverCooldownTime = Math.max(60, cowboy.revolverCooldownTime - 60); // 1s
+			} else if (cowboy.upgrades >= 3) {
+				cowboy.pumpUnlocked = true;
+			}
+			u.destroy();
+			upgrades.splice(i, 1);
+		}
+	}
+	// Win condition: survive 5 minutes or reach 100 score
+	if (score >= 100 || LK.ticks > 60 * 60 * 5) {
+		LK.showYouWin();
+		return;
+	}
+};
\ No newline at end of file