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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.3;
	self.flapPower = -12;
	self.rotation = 0;
	self.isMonster = false;
	self.monsterEndTime = 0;
	// Transform into monster
	self.transformToMonster = function () {
		if (!self.isMonster) {
			self.isMonster = true;
			self.monsterEndTime = LK.ticks + 600; // 10 seconds at 60fps
			// Remove current bird graphics
			self.removeChild(birdGraphics);
			// Add monster graphics
			self.monsterGraphics = self.attachAsset('monster', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			// Enhanced abilities
			self.flapPower = -4; // Monster jump power
			self.gravity = 0.1; // Less gravity
			// Visual effect
			tween(self.monsterGraphics, {
				scaleX: 1.3,
				scaleY: 1.3
			}, {
				duration: 500,
				easing: tween.elasticOut
			});
		}
	};
	// Transform back to normal bird
	self.transformToNormal = function () {
		if (self.isMonster) {
			self.isMonster = false;
			// Remove monster graphics
			if (self.monsterGraphics) {
				self.removeChild(self.monsterGraphics);
			}
			// Add back bird graphics
			birdGraphics = self.attachAsset('bird', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			// Reset normal abilities
			self.flapPower = -12;
			self.gravity = 0.3;
			// Restart wing animation
			self.startWingAnimation();
		}
	};
	// Start continuous wing flapping animation
	self.startWingAnimation = function () {
		// Create a continuous flapping animation by scaling the bird
		function flapUp() {
			tween(birdGraphics, {
				scaleY: 1.2
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: flapDown
			});
		}
		function flapDown() {
			tween(birdGraphics, {
				scaleY: 0.8
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: flapUp
			});
		}
		// Start the animation cycle
		flapUp();
	};
	// Start wing animation immediately
	self.startWingAnimation();
	self.flap = function () {
		self.velocity = self.flapPower;
		LK.getSound('flap').play();
	};
	self.update = function () {
		// Check if monster time is up
		if (self.isMonster && LK.ticks >= self.monsterEndTime) {
			self.transformToNormal();
		}
		self.velocity += self.gravity;
		self.y += self.velocity;
		// Monster can fly through boundaries without dying
		if (!self.isMonster) {
			// Check ground collision
			if (self.y > 2732 - 150) {
				self.y = 2732 - 150;
				gameOver = true;
			}
			// Check ceiling collision
			if (self.y < 50) {
				self.y = 50;
				gameOver = true;
			}
		} else {
			// Monster just bounces off boundaries
			if (self.y > 2732 - 150) {
				self.y = 2732 - 150;
				self.velocity = -Math.abs(self.velocity);
			}
			if (self.y < 50) {
				self.y = 50;
				self.velocity = Math.abs(self.velocity);
			}
		}
	};
	return self;
});
var Crown = Container.expand(function () {
	var self = Container.call(this);
	var crownGraphics = self.attachAsset('crown', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Dragon = Container.expand(function () {
	var self = Container.call(this);
	var dragonGraphics = self.attachAsset('dragon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.2;
	self.speed = -6; // Triple speed of pipes
	self.jumpPower = 5;
	self.dodgeTimer = 0;
	self.isDodging = false;
	self.targetY = 2732 / 2;
	self.jump = function () {
		self.velocity = -self.jumpPower;
	};
	self.update = function () {
		// Move horizontally with triple speed
		self.x += self.speed;
		// Dodge poles by finding safe gaps
		if (!self.isDodging) {
			// Check for incoming pipes and find safe path
			for (var i = 0; i < pipes.length; i++) {
				var pipe = pipes[i];
				// If pipe is ahead and close enough to dodge (increased detection range)
				if (pipe.x > self.x && pipe.x < self.x + 600) {
					// Calculate safe Y position (middle of gap between top and bottom pipes)
					var gapCenterY = pipe.topPipe.y + (pipe.bottomPipe.y - pipe.topPipe.y) / 2;
					self.targetY = gapCenterY;
					self.isDodging = true;
					self.dodgeTimer = 90; // Dodge for 1.5 seconds
					break;
				}
			}
		}
		// Move toward target Y position when dodging
		if (self.isDodging) {
			var yDiff = self.targetY - self.y;
			self.y += yDiff * 0.15; // Faster, smoother movement
			self.dodgeTimer--;
			if (self.dodgeTimer <= 0) {
				self.isDodging = false;
			}
		} else {
			// Normal flight behavior when not dodging
			self.velocity += self.gravity;
			self.y += self.velocity;
			// Keep dragon within screen bounds
			if (self.y > 2732 - 200) {
				self.y = 2732 - 200;
				self.velocity = -Math.abs(self.velocity);
			}
			if (self.y < 100) {
				self.y = 100;
				self.velocity = Math.abs(self.velocity);
			}
		}
	};
	return self;
});
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	self.gapSize = 1200; // Increased gap size for easier navigation
	self.speed = -4;
	self.scored = false;
	// Create top pipe
	self.topPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Create bottom pipe
	self.bottomPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0
	});
	self.setGapPosition = function (gapY) {
		self.topPipe.y = gapY - self.gapSize / 2;
		self.bottomPipe.y = gapY + self.gapSize / 2;
	};
	self.update = function () {
		self.x += self.speed;
		// Check if bird passed through pipe
		if (!self.scored && self.x < bird.x) {
			self.scored = true;
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			LK.getSound('score').play();
		}
	};
	return self;
});
var ReplayButton = Container.expand(function () {
	var self = Container.call(this);
	// Main button background
	var buttonGraphics = self.attachAsset('replayButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Crown decoration in corner
	var crownDecoration = self.attachAsset('crown', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.6,
		scaleY: 0.6
	});
	// Position crown in top-right corner of button
	crownDecoration.x = 70;
	crownDecoration.y = -25;
	// Replay text
	var replayText = new Text2('REPLAY', {
		size: 32,
		fill: 0xFFFFFF,
		align: 'center'
	});
	replayText.anchor.set(0.5, 0.5);
	self.addChild(replayText);
	// Button click handler
	self.down = function (x, y, obj) {
		// Restart the game by reloading
		location.reload();
	};
	return self;
});
var Snow = Container.expand(function () {
	var self = Container.call(this);
	var snowGraphics = self.attachAsset('snow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = Math.random() * 2 + 1;
	self.sway = Math.random() * 0.02 - 0.01;
	self.update = function () {
		self.y += self.speed;
		self.x += Math.sin(LK.ticks * self.sway) * 0.5;
	};
	return self;
});
var Star = Container.expand(function () {
	var self = Container.call(this);
	var starGraphics = self.attachAsset('star', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Start blinking animation immediately
	self.startBlinking = function () {
		function fadeOut() {
			tween(starGraphics, {
				alpha: 0.2
			}, {
				duration: 1000 + Math.random() * 2000,
				easing: tween.easeInOut,
				onFinish: fadeIn
			});
		}
		function fadeIn() {
			tween(starGraphics, {
				alpha: 1.0
			}, {
				duration: 1000 + Math.random() * 2000,
				easing: tween.easeInOut,
				onFinish: fadeOut
			});
		}
		// Start with random delay
		LK.setTimeout(function () {
			fadeOut();
		}, Math.random() * 3000);
	};
	// Start blinking when created
	self.startBlinking();
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x5555FF
});

/**** 
* Game Code
****/ 
var bird;
var pipes = [];
var ground;
var scoreTxt;
var gameOver = false;
var gameStarted = false;
var pipeSpawnTimer = 0;
var pipeSpawnInterval = 240; // frames between pipe spawns - increased gap
var hasTransformedToMonster = false;
var isWinter = false;
var snowParticles = [];
var snowSpawnTimer = 0;
var stars = [];
var starsSpawned = false;
var endingAnimationStarted = false;
var mario = null;
var crown = null;
function cleanupSnowParticles() {
	for (var i = snowParticles.length - 1; i >= 0; i--) {
		var snow = snowParticles[i];
		snow.destroy();
		snowParticles.splice(i, 1);
	}
}
function spawnStars() {
	// Create 30-50 stars scattered across the sky
	var numStars = 30 + Math.floor(Math.random() * 20);
	for (var i = 0; i < numStars; i++) {
		var star = new Star();
		star.x = Math.random() * 2048;
		star.y = 100 + Math.random() * 800; // Upper portion of screen
		stars.push(star);
		game.addChild(star);
	}
}
function cleanupStars() {
	for (var i = stars.length - 1; i >= 0; i--) {
		var star = stars[i];
		star.destroy();
		stars.splice(i, 1);
	}
	starsSpawned = false;
}
var everest;
var dragon;
var dragonSpawned = false;
var dragonEndTime = 0;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 1,
	x: 0,
	y: 2732
}));
// Create bird
bird = game.addChild(new Bird());
bird.x = 300;
bird.y = 2732 / 2;
// Create score text
scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Create instruction text
var instructionTxt = new Text2('TAP TO START', {
	size: 60,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
LK.gui.center.addChild(instructionTxt);
var pipePatternIndex = 0;
var pipePositions = [800, 1000, 1200, 1400, 1600, 1800, 1600, 1400, 1200, 1000]; // Connected systematic pattern
function spawnPipe() {
	var pipe = new Pipe();
	pipe.x = 2048 + 60;
	// Use systematic pattern with smooth transitions
	var gapY = pipePositions[pipePatternIndex % pipePositions.length];
	pipePatternIndex++;
	pipe.setGapPosition(gapY);
	pipes.push(pipe);
	game.addChild(pipe);
}
function checkCollisions() {
	// Monster is invincible and can fly through pipes
	if (bird.isMonster) {
		return;
	}
	for (var i = 0; i < pipes.length; i++) {
		var pipe = pipes[i];
		// Check collision with top pipe
		if (bird.intersects(pipe.topPipe)) {
			gameOver = true;
			LK.getSound('hit').play();
			return;
		}
		// Check collision with bottom pipe
		if (bird.intersects(pipe.bottomPipe)) {
			gameOver = true;
			LK.getSound('hit').play();
			return;
		}
	}
}
function checkSeasonChange() {
	// Transform bird into dragon at 85 points
	if (LK.getScore() >= 85 && !dragonSpawned) {
		dragonSpawned = true;
		// Remove current bird graphics (whether bird or monster)
		if (bird.isMonster && bird.monsterGraphics) {
			bird.removeChild(bird.monsterGraphics);
		} else {
			// Remove normal bird graphics
			var children = bird.children.slice();
			for (var i = 0; i < children.length; i++) {
				bird.removeChild(children[i]);
			}
		}
		// Add dragon graphics to the bird
		bird.dragonGraphics = bird.attachAsset('dragon', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.7,
			scaleY: 0.7
		});
		// Transform bird properties to dragon
		bird.flapPower = -8;
		bird.gravity = 0.15;
		bird.isDragon = true;
		// Visual transformation effect
		tween(bird.dragonGraphics, {
			scaleX: 1.0,
			scaleY: 1.0
		}, {
			duration: 1000,
			easing: tween.elasticOut
		});
	}
	// Day season at 50 points
	if (LK.getScore() >= 50) {
		game.setBackgroundColor(0xFFD700); // Bright day yellow
		// Clean up stars when entering day season
		if (starsSpawned) {
			cleanupStars();
		}
	} else if (LK.getScore() >= 25) {
		// Winter season at 25 points
		game.setBackgroundColor(0xF0F8FF); // Winter white/light blue
		// Clean up stars when entering winter season
		if (starsSpawned) {
			cleanupStars();
		}
		if (!isWinter) {
			isWinter = true;
		}
	} else if (LK.getScore() >= 5) {
		// Change to night theme when score reaches 5
		game.setBackgroundColor(0x1a1a2e); // Dark night blue
		// Transform bird to monster once when reaching night time
		if (!hasTransformedToMonster) {
			hasTransformedToMonster = true;
			bird.transformToMonster();
		}
		// Spawn stars for night effect only
		if (!starsSpawned) {
			starsSpawned = true;
			spawnStars();
		}
	} else {
		game.setBackgroundColor(0x5555FF); // 85 blue background
	}
}
function cleanupPipes() {
	for (var i = pipes.length - 1; i >= 0; i--) {
		var pipe = pipes[i];
		if (pipe.x < -100) {
			pipe.destroy();
			pipes.splice(i, 1);
		}
	}
}
game.down = function (x, y, obj) {
	if (gameOver) {
		return;
	}
	if (!gameStarted) {
		gameStarted = true;
		instructionTxt.visible = false;
	}
	bird.flap();
};
game.update = function () {
	if (gameOver) {
		LK.showGameOver();
		return;
	}
	// Check winning condition at 100 points and start ending animation
	if (LK.getScore() >= 100 && !endingAnimationStarted) {
		endingAnimationStarted = true;
		// Create Mario (using dragon asset as Mario)
		mario = game.addChild(LK.getAsset('dragon', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -200,
			y: 2732 / 2,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		// Create crown
		crown = game.addChild(new Crown());
		crown.x = -150;
		crown.y = 2732 / 2 - 100;
		crown.alpha = 0;
		// Animation sequence: Mario enters from left
		tween(mario, {
			x: 800
		}, {
			duration: 2000,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				// Show crown with fade in
				tween(crown, {
					alpha: 1,
					x: 850
				}, {
					duration: 1000,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						// Mario gives crown to bird - move crown to bird
						tween(crown, {
							x: bird.x,
							y: bird.y - 80
						}, {
							duration: 1500,
							easing: tween.easeInOut,
							onFinish: function onFinish() {
								// Crown ceremony complete - show thank you message
								var thankYouText = new Text2('Thank you for playing my game\nI know it is not good very much\nbut I tried my best to provide this ending', {
									size: 60,
									fill: 0xFFFFFF,
									align: 'center'
								});
								thankYouText.anchor.set(0.5, 0.5);
								thankYouText.x = 1024;
								thankYouText.y = 1366;
								thankYouText.alpha = 0;
								LK.gui.center.addChild(thankYouText);
								// Fade in thank you message
								tween(thankYouText, {
									alpha: 1
								}, {
									duration: 1500,
									easing: tween.easeIn,
									onFinish: function onFinish() {
										// Show message for 3 seconds then show like message
										LK.setTimeout(function () {
											// Fade out thank you message
											tween(thankYouText, {
												alpha: 0
											}, {
												duration: 1000,
												easing: tween.easeOut,
												onFinish: function onFinish() {
													// Show like message
													var likeText = new Text2('Like the game if you really love it', {
														size: 60,
														fill: 0xFFFFFF,
														align: 'center'
													});
													likeText.anchor.set(0.5, 0.5);
													likeText.x = 1024;
													likeText.y = 1366;
													likeText.alpha = 0;
													LK.gui.center.addChild(likeText);
													// Fade in like message
													tween(likeText, {
														alpha: 1
													}, {
														duration: 1500,
														easing: tween.easeIn,
														onFinish: function onFinish() {
															// Show like message for 3 seconds then show replay button
															LK.setTimeout(function () {
																// Create and show replay button
																var replayButton = new ReplayButton();
																replayButton.x = 1024;
																replayButton.y = 1600;
																replayButton.alpha = 0;
																LK.gui.center.addChild(replayButton);
																// Fade in replay button
																tween(replayButton, {
																	alpha: 1
																}, {
																	duration: 1000,
																	easing: tween.easeIn
																});
															}, 3000);
														}
													});
												}
											});
										}, 3000);
									}
								});
							}
						});
					}
				});
			}
		});
		return;
	}
	if (!gameStarted) {
		return;
	}
	// Update bird
	// Spawn pipes
	pipeSpawnTimer++;
	if (pipeSpawnTimer >= pipeSpawnInterval) {
		spawnPipe();
		pipeSpawnTimer = 0;
	}
	// Check collisions
	checkCollisions();
	// Check for season changes
	checkSeasonChange();
	// Bird is now permanently transformed into dragon at 85 points
	// No need for separate dragon lifecycle management
	// Cleanup off-screen pipes
	cleanupPipes();
};

===================================================================
--- original.js
+++ change.js
@@ -196,9 +196,9 @@
 });
 var Pipe = Container.expand(function () {
 	var self = Container.call(this);
 	self.gapSize = 1200; // Increased gap size for easier navigation
-	self.speed = -2;
+	self.speed = -4;
 	self.scored = false;
 	// Create top pipe
 	self.topPipe = self.attachAsset('pipe', {
 		anchorX: 0.5,