Reformat promise

README.md

@@ -1,8 +1,8 @@
-# Browser Bird (Work in Progress!)
+# Pocket Bird (Work in Progress!)
 
 This project is still being worked on, but if you wish to help me beta test it, join the [Discord](https://discord.gg/6yxE9prcNc) and  follow the installation instructions below!
 
 1. Install [Tampermonkey](https://www.tampermonkey.net/) on your web browser
 2. Enable the Tampermonkey extension and give it the permissions requested
-3. Install my Browser Bird script by going to this link and clicking install: [https://github.com/IdreesInc/Browser-Bird/raw/refs/heads/main/dist/birb.user.js](https://github.com/IdreesInc/Browser-Bird/raw/refs/heads/main/dist/birb.user.js)
+3. Install my Pocket Bird script by going to this link and clicking install: [https://github.com/IdreesInc/Pocket-Bird/raw/refs/heads/main/dist/birb.user.js](https://github.com/IdreesInc/Pocket-Bird/raw/refs/heads/main/dist/birb.user.js)
 4. Now any websites you visit will have a little bird hopping around!

birb.js

@@ -1,6 +1,5 @@
 // @ts-check
 
-// @ts-ignore
 const SHARED_CONFIG = {
 	birbCssScale: 1,
 	uiCssScale: 1,
@@ -9,9 +8,8 @@ const SHARED_CONFIG = {
 	hopDistance: 45,
 };
 
-
 const DESKTOP_CONFIG = {
-	flySpeed: 0.2,
+	flySpeed: 0.25
 };
 
 const MOBILE_CONFIG = {
@@ -28,17 +26,6 @@ const BIRB_CSS_SCALE = CONFIG.birbCssScale;
 const UI_CSS_SCALE = CONFIG.uiCssScale;
 const CANVAS_PIXEL_SIZE = CONFIG.canvasPixelSize;
 const WINDOW_PIXEL_SIZE = CANVAS_PIXEL_SIZE * BIRB_CSS_SCALE;
-const HOP_SPEED = CONFIG.hopSpeed;
-const FLY_SPEED = CONFIG.flySpeed;
-const HOP_DISTANCE = CONFIG.hopDistance;
-// Time in milliseconds until the user is considered AFK
-const AFK_TIME = debugMode ? 0 : 1000 * 30;
-const SPRITE_HEIGHT = 32;
-const MENU_ID = "birb-menu";
-const MENU_EXIT_ID = "birb-menu-exit";
-const FIELD_GUIDE_ID = "birb-field-guide";
-const FEATHER_ID = "birb-feather";
-
 
 const DEFAULT_SETTINGS = {
 	birbMode: false
@@ -48,6 +35,23 @@ const DEFAULT_SETTINGS = {
  * @typedef {typeof DEFAULT_SETTINGS} Settings
  */
 
+/**
+ * @typedef {Object} SavedStickyNote
+ * @property {string} id
+ * @property {string} site
+ * @property {string} content
+ * @property {number} top
+ * @property {number} left
+ */
+
+/**
+ * @typedef {Object} BirbSaveData
+ * @property {string[]} unlockedSpecies
+ * @property {string} currentSpecies
+ * @property {Partial<Settings>} settings
+ * @property {SavedStickyNote[]} [stickyNotes]
+ */
+
 /** @type {Partial<Settings>} */
 let userSettings = {};
 
@@ -380,6 +384,7 @@ const Directions = {
 };
 
 const SPRITE_WIDTH = 32;
+const SPRITE_HEIGHT = 32;
 const DECORATIONS_SPRITE_WIDTH = 48;
 const FEATHER_SPRITE_WIDTH = 32;
 
@@ -387,6 +392,34 @@ const SPRITE_SHEET = "__SPRITE_SHEET__";
 const DECORATIONS_SPRITE_SHEET = "__DECORATIONS_SPRITE_SHEET__";
 const FEATHER_SPRITE_SHEET = "__FEATHER_SPRITE_SHEET__";
 
+const MENU_ID = "birb-menu";
+const MENU_EXIT_ID = "birb-menu-exit";
+const FIELD_GUIDE_ID = "birb-field-guide";
+const FEATHER_ID = "birb-feather";
+
+const HOP_SPEED = CONFIG.hopSpeed;
+const FLY_SPEED = CONFIG.flySpeed;
+const HOP_DISTANCE = CONFIG.hopDistance;
+/** Speed at which the feather falls per tick */
+const FEATHER_FALL_SPEED = 1;
+/** Time in milliseconds until the user is considered AFK */
+const AFK_TIME = debugMode ? 0 : 1000 * 30;
+const UPDATE_INTERVAL = 1000 / 60; // 60 FPS
+// Per-frame chances
+const HOP_CHANCE = 1 / (60 * 3); // 3 seconds
+const FOCUS_SWITCH_CHANCE = 1 / (60 * 20); // 20 seconds
+const FEATHER_CHANCE = 1 / (60 * 60 * 60 * 2); // 2 hours
+/** Multiplier after petting that increases the feather drop chance */
+const PET_FEATHER_BOOST = 2;
+/** How long the pet boost lasts in milliseconds */
+const PET_BOOST_DURATION = 1000 * 60 * 5;
+const MIN_FOCUS_ELEMENT_WIDTH = 100;
+const MIN_FOCUS_ELEMENT_TOP = 80;
+/** Time between checking whether the URL has changed */
+const URL_CHECK_INTERVAL = 500;
+/** Time after petting before the menu can be opened */
+const PET_MENU_COOLDOWN = 1000;
+
 /**
  * Load the sprite sheet and return the pixel-map template
  * @param {string} dataUri
@@ -443,8 +476,14 @@ function loadSpriteSheetPixels(dataUri, templateColors = true) {
 	});
 }
 
-// @ts-ignore
+log("Loading sprite sheets...");
-Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATIONS_SPRITE_SHEET, false), loadSpriteSheetPixels(FEATHER_SPRITE_SHEET)]).then(([birbPixels, decorationPixels, featherPixels]) => {
+
+Promise.all([
+	loadSpriteSheetPixels(SPRITE_SHEET),
+	loadSpriteSheetPixels(DECORATIONS_SPRITE_SHEET, false),
+	loadSpriteSheetPixels(FEATHER_SPRITE_SHEET)
+]).then(([birbPixels, decorationPixels, featherPixels]) => {
+	
 	const SPRITE_SHEET = birbPixels;
 	const DECORATIONS_SPRITE_SHEET = decorationPixels;
 	const FEATHER_SPRITE_SHEET = featherPixels;
@@ -597,8 +636,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	const menuItems = [
 		new MenuItem(`Pet ${birdBirb()}`, pet),
 		new MenuItem("Field Guide", insertFieldGuide),
-		// new MenuItem("Decorations", insertDecoration),
-		new DebugMenuItem("Applications", () => switchMenuItems(otherItems), false),
 		new MenuItem("Sticky Note", newStickyNote),
 		new MenuItem(`Hide ${birdBirb()}`, hideBirb),
 		new DebugMenuItem("Freeze/Unfreeze", () => {
@@ -627,39 +664,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		})
 	];
 
-	const otherItems = [
-		new MenuItem("Go Back", () => switchMenuItems(menuItems), false),
-		new Separator(),
-		new MenuItem("Video Games", () => switchMenuItems(gameItems), false),
-		new MenuItem("Utilities", () => switchMenuItems(utilityItems), false),
-		new MenuItem("Music Player", () => insertMusicPlayer(), false),
-	];
-
-	const gameItems = [
-		new MenuItem("Go Back", () => switchMenuItems(otherItems), false),
-		new Separator(),
-		new MenuItem("Pinball", () => insertPico8("Terra Nova Pinball", "terra_nova_pinball")),
-		new MenuItem("Pico Dino", () => insertPico8("Pico Dino", "picodino")),
-		new MenuItem("Woodworm", () => insertPico8("Woodworm", "woodworm")),
-		new MenuItem("Pico and Chill", () => insertPico8("Pico and Chill", "picochill")),
-		new MenuItem("Lani's Trek", () => insertPico8("Celeste 2 Lani's Trek", "celeste_classic_2")),
-		new MenuItem("Tetraminis", () => insertPico8("Tetraminis", "tetraminisdeffect")),
-		// new MenuItem("Pool", () => insertPico8("Pool", "mot_pool")),
-	];
-
-	const utilityItems = [
-		new MenuItem("Go Back", () => switchMenuItems(otherItems), false),
-		new Separator(),
-		new MenuItem("Pomodoro Timer", () => insertPico8("Pomodoro", "pomodorotimerv1")),
-		new MenuItem("Ohm Calculator", () => insertPico8("Resistor Calculator", "picoohm")),
-		new MenuItem("Wobblepaint	", () => insertPico8("Wobblepaint", "wobblepaint")),
-	];
-
 	const styleElement = document.createElement("style");
 	const canvas = document.createElement("canvas");
 
 	/** @type {CanvasRenderingContext2D} */
-	// @ts-ignore
+	// @ts-expect-error
 	const ctx = canvas.getContext("2d");
 
 	const States = {
@@ -676,7 +685,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	let ticks = 0;
 	// Bird's current position
 	let birdY = 0;
-	let birdX = 0;
+	let birdX = 40;
 	// Bird's starting position (when flying)
 	let startX = 0;
 	let startY = 0;
@@ -685,6 +694,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	let targetY = 0;
 	/** @type {HTMLElement|null} */
 	let focusedElement = null;
+	let focusedBounds = { left: 0, right: 0, top: 0 };
 	let lastActionTimestamp = Date.now();
 	/** @type {number[]} */
 	let petStack = [];
@@ -695,12 +705,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	/** @type {StickyNote[]} */
 	let stickyNotes = [];
 
-
 	/**
 	 * @returns {boolean} Whether the script is running in a userscript extension context
 	 */
 	function isUserScript() {
-		// @ts-ignore
+		// @ts-expect-error
 		return typeof GM_getValue === "function";
 	}
 
@@ -713,9 +722,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function load() {
 		/** @type {Record<string, any>} */
 		let saveData = {};
+
 		if (isUserScript()) {
 			log("Loading save data from UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			saveData = GM_getValue("birbSaveData", {}) ?? {};
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, loading save data from localStorage");
@@ -723,14 +733,18 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		} else {
 			log("Not a UserScript");
 		}
+
 		debug("Loaded data: " + JSON.stringify(saveData));
+
 		if (!saveData.settings) {
 			log("No user settings found in save data, starting fresh");
 		}
+
 		userSettings = saveData.settings ?? {};
 		unlockedSpecies = saveData.unlockedSpecies ?? [DEFAULT_BIRD];
 		currentSpecies = saveData.currentSpecies ?? DEFAULT_BIRD;
 		stickyNotes = [];
+
 		if (saveData.stickyNotes) {
 			for (let note of saveData.stickyNotes) {
 				if (note.id) {
@@ -738,17 +752,19 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				}
 			}
 		}
+
 		log(stickyNotes.length + " sticky notes loaded");
 		switchSpecies(currentSpecies);
 	}
 
 	function save() {
-		/** @type {Record<string, any>} */
+		/** @type {BirbSaveData} */
-		let saveData = {
+		const saveData = {
-			unlockedSpecies: unlockedSpecies,
+			unlockedSpecies,
-			currentSpecies: currentSpecies,
+			currentSpecies,
 			settings: userSettings
 		};
+
 		if (stickyNotes.length > 0) {
 			saveData.stickyNotes = stickyNotes.map(note => ({
 				id: note.id,
@@ -758,9 +774,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				left: note.left
 			}));
 		}
+
 		if (isUserScript()) {
 			log("Saving data to UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			GM_setValue("birbSaveData", saveData);
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, saving data to localStorage");
@@ -773,7 +790,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function resetSaveData() {
 		if (isUserScript()) {
 			log("Resetting save data in UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			GM_deleteValue("birbSaveData");
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, resetting save data in localStorage");
@@ -802,8 +819,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function init() {
 		if (window !== window.top) {
 			// Skip installation if within an iframe
+			log("In iframe, skipping Birb script initialization");
 			return;
 		}
+		log("Sprite sheets loaded successfully, initializing bird...");
 
 		// Preload font
 		const MONOCRAFT_SRC = "https://cdn.jsdelivr.net/gh/idreesinc/Monocraft@99b32ab40612ff2533a69d8f14bd8b3d9e604456/dist/Monocraft.otf";
@@ -835,20 +854,8 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		canvas.height = SPRITE_HEIGHT * CANVAS_PIXEL_SIZE;
 		document.body.appendChild(canvas);
 
-		/** @type {NodeJS.Timeout} */
-		let scrollTimeout;
 		window.addEventListener("scroll", () => {
-			// TODO: Only do this if focused on the ground
-			if (focusedElement === null && currentState !== States.FLYING) {
-				canvas.style.transition = "opacity 0.2s";
-				canvas.style.opacity = "0";
-			}
 			lastActionTimestamp = Date.now();
-			clearTimeout(scrollTimeout);
-			scrollTimeout = setTimeout(() => {
-				canvas.style.transition = "opacity 0.4s";
-				canvas.style.opacity = "1";
-			}, 100);
 		});
 
 		onClick(document, (e) => {
@@ -859,6 +866,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		});
 
 		onClick(canvas, () => {
+			if (currentAnimation === Animations.HEART && (Date.now() - lastPetTimestamp < PET_MENU_COOLDOWN)) {
+				// Currently being pet, don't open menu
+				return;
+			}
 			insertMenu();
 		});
 
@@ -871,13 +882,17 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				}
 				const pets = petStack.filter((time) => Date.now() - time < 1000).length;
 				if (pets >= 3) {
-					setAnimation(Animations.HEART);
+					pet();
 					// Clear the stack
 					petStack = [];
 				}
 			}
 		});
 
+		canvas.addEventListener("touchmove", (e) => {
+			pet();
+		});
+
 		drawStickyNotes();
 
 		let lastUrl = (window.location.href ?? "").split("?")[0];
@@ -888,31 +903,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				lastUrl = currentUrl;
 				drawStickyNotes();
 			}
-		}, 500);
+		}, URL_CHECK_INTERVAL);
 
-		setInterval(update, 1000 / 60);
+		setInterval(update, UPDATE_INTERVAL);
-
-		birdY = getWindowBottom();
-
-		// TODO: For testing only
-		hop();
 	}
 
-	function drawStickyNotes() {
-		// Remove all existing sticky notes
-		const existingNotes = document.querySelectorAll(".birb-sticky-note");
-		existingNotes.forEach(note => note.remove());
-		// Render all sticky notes
-		for (let stickyNote of stickyNotes) {
-			if (isStickyNoteApplicable(stickyNote)) {
-				renderStickyNote(stickyNote);
-			}
-		}
-	}
-
-	/**
-	 * Run the bird's behavior logic
-	 */
 	function update() {
 		ticks++;
 
@@ -922,69 +917,65 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 			// Won't be restored on fullscreen exit
 		}
 
-		if (currentState === States.IDLE) {
+		if (currentState === States.IDLE && !frozen && !isMenuOpen()) {
-			if (Math.random() < 1 / (60 * 3) && currentAnimation !== Animations.HEART && !isMenuOpen()) {
+			if (Math.random() < HOP_CHANCE && currentAnimation !== Animations.HEART) {
 				hop();
-			} else if (Math.random() < 1 / (60 * 20) && Date.now() - lastActionTimestamp > AFK_TIME && !isMenuOpen()) {
+			} else if (Date.now() - lastActionTimestamp > AFK_TIME) {
+				// Idle for a while, do something
+				if (focusedElement === null) {
+					// Fly to an element
+					focusOnElement();
+					lastActionTimestamp = Date.now();
+				} else if (Math.random() < FOCUS_SWITCH_CHANCE) {
+					// Fly to another element if idle for a longer while
 					focusOnElement();
 					lastActionTimestamp = Date.now();
 				}
 			}
-
-		const FEATHER_CHANCE = 1 / (60 * 60 * 60 * 2); // 1 every 2 hours (ticks * seconds * minutes * hours)
-		// Double the chance of a feather if recently pet
-		let petMod = Date.now() - lastPetTimestamp < 1000 * 60 * 5 ? 2 : 1;
-		if (visible && Math.random() < FEATHER_CHANCE * petMod) {
-			lastPetTimestamp = 0;
-			activateFeather();
-		}
-		updateFeather();
-	}
-
-	/**
-	 * Render the bird in the dom and update its position if necessary
-	 */
-	function draw() {
-		requestAnimationFrame(draw);
-
-		if (!visible) {
-			return;
-		}
-
-		// Update the bird's position
-		if (currentState === States.IDLE) {
-			if (focusedElement !== null) {
-				birdY = getFocusedElementY();
-				if (!isWithinHorizontalBounds(birdX)) {
-					focusOnGround();
-				}
-			} else {
-				// Ground the bird
-				birdY = getWindowBottom();
-			}
-		} else if (currentState === States.FLYING) {
-			// Fly to target location (even if in the air)
-			if (updateParabolicPath(FLY_SPEED)) {
-				setState(States.IDLE);
-			}
 		} else if (currentState === States.HOP) {
 			if (updateParabolicPath(HOP_SPEED)) {
 				setState(States.IDLE);
 			}
 		}
 
-		if (focusedElement === null) {
+		// Double the chance of a feather if recently pet
-			if (Date.now() - lastActionTimestamp > AFK_TIME && !isMenuOpen()) {
+		const petMod = Date.now() - lastPetTimestamp < PET_BOOST_DURATION ? PET_FEATHER_BOOST : 1;
-				// Fly to an element if the user is AFK
+		if (visible && Math.random() < FEATHER_CHANCE * petMod) {
-				// focusOnElement();
+			lastPetTimestamp = 0;
-				// lastActionTimestamp = Date.now();
+			activateFeather();
 		}
-		} else if (focusedElement !== null) {
+		updateFeather();
-			targetY = getFocusedElementY();
+	}
-			if (targetY < window.scrollY || targetY > window.scrollY + window.innerHeight) {
+
-				// Fly to ground if the focused element moves out of bounds
+	function draw() {
+		requestAnimationFrame(draw);
+
+		if (!visible) {
+			return;
+		}
+
+		updateFocusedElementBounds();
+
+		// Update the bird's position
+		if (currentState === States.IDLE) {
+			if (focusedElement && !isWithinHorizontalBounds()) {
 				focusOnGround();
 			}
+			birdY = getFocusedY();
+		} else if (currentState === States.FLYING) {
+			// Fly to target location (even if in the air)
+			if (updateParabolicPath(FLY_SPEED)) {
+				setState(States.IDLE);
+			}
+		}
+
+		const oldTargetY = targetY;
+		targetY = getFocusedY();
+		// Adjust startY to account for scrolling
+		startY += targetY - oldTargetY;
+		if (targetY < 0 || targetY > window.innerHeight) {
+			// Fly to ground if the focused element moves out of bounds
+			focusOnGround();
 		}
 
 		ctx.clearRect(0, 0, canvas.width, canvas.height);
@@ -997,9 +988,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		setY(birdY);
 	}
 
-	init();
-	draw();
-
 	function newStickyNote() {
 		const id = Date.now().toString();
 		const site = window.location.href;
@@ -1100,17 +1088,8 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 			return false;
 		}
 
-		/** @type {Record<string, string>} */
+		const stickyNoteParams = parseUrlParams(stickyNoteUrl);
-		const stickyNoteParams = stickyNoteUrl.split("?")[1]?.split("&").reduce((params, param) => {
+		const currentParams = parseUrlParams(currentUrl);
-			const [key, value] = param.split("=");
-			return { ...params, [key]: value };
-		}, {});
-
-		/** @type {Record<string, string>} */
-		const currentParams = currentUrl.split("?")[1]?.split("&").reduce((params, param) => {
-			const [key, value] = param.split("=");
-			return { ...params, [key]: value };
-		}, {});
 
 		debug("Comparing params: ", stickyNoteParams, currentParams);
 
@@ -1122,6 +1101,18 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return true;
 	}
 
+	function drawStickyNotes() {
+		// Remove all existing sticky notes
+		const existingNotes = document.querySelectorAll(".birb-sticky-note");
+		existingNotes.forEach(note => note.remove());
+		// Render all sticky notes
+		for (let stickyNote of stickyNotes) {
+			if (isStickyNoteApplicable(stickyNote)) {
+				renderStickyNote(stickyNote);
+			}
+		}
+	}
+
 	/**
 	 * Create an HTML element with the specified parameters
 	 * @param {string} className
@@ -1141,6 +1132,42 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return element;
 	}
 
+	/**
+	 * Create a window element with header and content
+	 * @param {string} id
+	 * @param {string} title
+	 * @param {string} contentHtml
+	 * @param {() => void} [onClose]
+	 * @returns {HTMLElement}
+	 */
+	function createWindow(id, title, contentHtml, onClose) {
+		const window = makeElement("birb-window", undefined, id);
+		window.innerHTML = `
+			<div class="birb-window-header">
+				<div class="birb-window-title">${title}</div>
+				<div class="birb-window-close">x</div>
+			</div>
+			<div class="birb-window-content">
+				${contentHtml}
+			</div>
+		`;
+
+		document.body.appendChild(window);
+		makeDraggable(window.querySelector(".birb-window-header"));
+
+		const closeButton = window.querySelector(".birb-window-close");
+		if (closeButton) {
+			makeClosable(() => {
+				if (onClose) {
+					onClose();
+				}
+				window.remove();
+			}, closeButton);
+		}
+
+		return window;
+	}
+
 	function insertDecoration() {
 		// Create a canvas element for the decoration
 		const decorationCanvas = document.createElement("canvas");
@@ -1220,21 +1247,16 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 
 	function updateFeather() {
 		const feather = document.querySelector("#birb-feather");
-		const featherGravity = 1;
 		if (!feather || !(feather instanceof HTMLElement)) {
 			return;
 		}
-		const y = parseInt(feather.style.top || "0") + featherGravity;
+		const y = parseInt(feather.style.top || "0") + FEATHER_FALL_SPEED;
 		feather.style.top = `${Math.min(y, window.innerHeight - feather.offsetHeight)}px`;
 		if (y < window.innerHeight - feather.offsetHeight) {
 			feather.style.left = `${Math.sin(3.14 * 2 * (ticks / 120)) * 25}px`;
 		}
 	}
 
-
-	// insertDecoration();
-	// insertFieldGuide();
-
 	/**
 	 * @param {HTMLElement} element
 	 */
@@ -1251,28 +1273,14 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		if (document.querySelector("#" + FIELD_GUIDE_ID)) {
 			return;
 		}
-		let html = `
+
-			<div class="birb-window-header">
+		const modal = createWindow("birb-modal", title, `
-				<div class="birb-window-title">${title}</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content">
 			<div class="birb-message-content">
 				${message}
 			</div>
-			</div>`
+		`);
-		const modal = makeElement("birb-window");
-		modal.style.width = "270px";
-		modal.innerHTML = html;
-		document.body.appendChild(modal);
-		makeDraggable(modal.querySelector(".birb-window-header"));
 
-		const closeButton = modal.querySelector(".birb-window-close");
+		modal.style.width = "270px";
-		if (closeButton) {
-			makeClosable(() => {
-				modal.remove();
-			}, closeButton);
-		}
 		centerElement(modal);
 	}
 
@@ -1381,60 +1389,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		}
 	}
 
-	// insertPico8();
-
 	function isSafari() {
 		return /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
 	}
 
-	/**
-	 * @param {string} name
-	 * @param {string} pid
-	 */
-	function insertPico8(name, pid) {
-		let html = `
-			<div class="birb-window-header">
-				<div class="birb-window-title">${name}</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content birb-pico-8-content">
-				<iframe src="https://www.lexaloffle.com/bbs/widget.php?pid=${pid}" scrolling='${isSafari() ? "yes" : "no"}'></iframe>
-			</div>`
-		const pico8 = makeElement("birb-window");
-		pico8.innerHTML = html;
-		document.body.appendChild(pico8);
-		makeDraggable(pico8.querySelector(".birb-window-header"));
-		const close = pico8.querySelector(".birb-window-close");
-		if (close) {
-			makeClosable(() => {
-				pico8.remove();
-			}, close);
-		}
-		centerElement(pico8);
-	}
-
-	function insertMusicPlayer() {
-		let html = `
-			<div class="birb-window-header">
-				<div class="birb-window-title">Music Player</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content birb-music-player-content">
-			<iframe style="border-radius:12px" src="https://open.spotify.com/embed/playlist/31FWVQBp3WQydWLNhO0ACi?utm_source=generator" width="250" height="352" frameBorder="0" allowfullscreen="" allow="autoplay; clipboard-write; encrypted-media; fullscreen; picture-in-picture" loading="lazy"></iframe>
-		</div>`;
-		const pico8 = makeElement("birb-window");
-		pico8.innerHTML = html;
-		document.body.appendChild(pico8);
-		makeDraggable(pico8.querySelector(".birb-window-header"));
-		const close = pico8.querySelector(".birb-window-close");
-		if (close) {
-			makeClosable(() => {
-				pico8.remove();
-			}, close);
-		}
-		centerElement(pico8);
-	}
-
 	/**
 	 * @param {string} type
 	 */
@@ -1548,7 +1506,23 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 */
 	function onClick(element, action) {
 		element.addEventListener("click", (e) => action(e));
-		element.addEventListener("touchstart", (e) => action(e));
+		element.addEventListener("touchend", (e) => {
+			if (e instanceof TouchEvent === false) {
+				return;
+			} else if (element instanceof HTMLElement === false) {
+				return;
+			}
+			const touch = e.changedTouches[0];
+			const rect = element.getBoundingClientRect();
+			if (
+				touch.clientX >= rect.left &&
+				touch.clientX <= rect.right &&
+				touch.clientY >= rect.top &&
+				touch.clientY <= rect.bottom
+			) {
+				action(e);
+			}
+		});
 	}
 
 	/**
@@ -1682,63 +1656,70 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	}
 
 	function getFocusedElementRandomX() {
-		if (focusedElement === null) {
+		return Math.random() * (focusedBounds.right - focusedBounds.left) + focusedBounds.left;
-			return Math.random() * window.innerWidth;
-		}
-		const rect = focusedElement.getBoundingClientRect();
-		return Math.random() * (rect.right - rect.left) + rect.left + window.scrollX;
 	}
 
-	function getFocusedElementY() {
+	function isWithinHorizontalBounds() {
-		if (focusedElement === null) {
+		return birdX >= focusedBounds.left && birdX <= focusedBounds.right;
-			return getWindowBottom();
 	}
-		const rect = focusedElement.getBoundingClientRect();
+
-		return rect.top + window.scrollY;
+	function getFocusedY() {
+		return getFullWindowHeight() - focusedBounds.top;
 	}
 
 	/**
-	 * @param {number} x 
+	 * @returns The render-safe height of the inner browser window
-	 * @returns {boolean} Whether the x coordinate is within the horizontal bounds of the focused element
 	 */
-	function isWithinHorizontalBounds(x) {
+	function getSafeWindowHeight() {
-		if (focusedElement === null) {
+		// Necessary because iOS 26 Safari is terrible and won't render
-			return true;
+		// fixed elements behind the address bar
+		return window.innerHeight;
 	}
-		const rect = focusedElement.getBoundingClientRect();
+
-		return x >= rect.left && x <= rect.right;
+	/**
+	 * @returns The true height of the inner browser window
+	 */
+	function getFullWindowHeight() {
+		return document.documentElement.clientHeight;
 	}
 
 	function focusOnGround() {
-		if (focusedElement === null) {
-			// Already focused on ground
-			return;
-		}
 		console.log("Focusing on ground");
 		focusedElement = null;
-		flyTo(Math.random() * window.innerWidth, getWindowBottom());
+		focusedBounds = { left: 0, right: window.innerWidth, top: getSafeWindowHeight() };
+		flyTo(Math.random() * window.innerWidth, 0);
 	}
 
 	function focusOnElement() {
 		if (frozen) {
 			return;
 		}
-		console.log("Focusing on element");
 		const elements = document.querySelectorAll("img, video");
 		const inWindow = Array.from(elements).filter((img) => {
 			const rect = img.getBoundingClientRect();
-			return rect.left >= 0 && rect.top >= 80 && rect.right <= window.innerWidth && rect.top <= window.innerHeight;
+			return rect.left >= 0 && rect.top >= MIN_FOCUS_ELEMENT_TOP && rect.right <= window.innerWidth && rect.top <= window.innerHeight;
 		});
-		const MIN_WIDTH = 100;
 		/** @type {HTMLElement[]} */
-		// @ts-ignore
+		// @ts-expect-error
-		const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_WIDTH);
+		const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_FOCUS_ELEMENT_WIDTH);
 		if (largeElements.length === 0) {
 			return;
 		}
 		const randomElement = largeElements[Math.floor(Math.random() * largeElements.length)];
 		focusedElement = randomElement;
-		flyTo(getFocusedElementRandomX(), getFocusedElementY());
+		log("Focusing on element: ", focusedElement);
+		updateFocusedElementBounds();
+		flyTo(getFocusedElementRandomX(), getFocusedY());
+	}
+
+	function updateFocusedElementBounds() {
+		if (focusedElement === null) {
+			// Update ground location to bottom of window
+			focusedBounds = { left: 0, right: window.innerWidth, top: getFullWindowHeight() };
+			return;
+		}
+		const { left, right, top } = focusedElement.getBoundingClientRect();
+		focusedBounds = { left, right, top };
 	}
 
 	function getCanvasWidth() {
@@ -1749,40 +1730,24 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return canvas.height * BIRB_CSS_SCALE
 	}
 
-	function getWindowBottom() {
-		return window.scrollY + window.innerHeight;
-	}
-
 	function hop() {
 		if (frozen) {
 			return;
 		}
 		if (currentState === States.IDLE) {
-			// Determine bounds for hopping
-			let minX = 0;
-			let maxX = window.innerWidth;
-			let y = getWindowBottom();
-			if (focusedElement !== null) {
-				// Hop on the element
-				const rect = focusedElement.getBoundingClientRect();
-				minX = rect.left;
-				maxX = rect.right;
-				y = window.innerHeight - rect.top;
-			}
 			setState(States.HOP);
 			setAnimation(Animations.FLYING);
-			if ((Math.random() < 0.5 && birdX - HOP_DISTANCE > minX) || birdX + HOP_DISTANCE > maxX) {
+			if ((Math.random() < 0.5 && birdX - HOP_DISTANCE > focusedBounds.left) || birdX + HOP_DISTANCE > focusedBounds.right) {
 				targetX = birdX - HOP_DISTANCE;
 			} else {
 				targetX = birdX + HOP_DISTANCE;
 			}
-			targetY = y;
+			targetY = getFocusedY();
-			console.log("hopping from", birdX, birdY, "to", targetX, targetY);
 		}
 	}
 
 	function pet() {
-		if (currentState === States.IDLE) {
+		if (currentState === States.IDLE && currentAnimation !== Animations.HEART) {
 			setAnimation(Animations.HEART);
 			lastPetTimestamp = Date.now();
 		}
@@ -1798,13 +1763,19 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 * @param {number} y
 	 */
 	function flyTo(x, y) {
-		console.log("Flying to", x, y);
 		targetX = x;
 		targetY = y;
 		setState(States.FLYING);
 		setAnimation(Animations.FLYING);
 	}
 
+	/**
+	 * @returns {boolean} Whether the bird should be absolutely positioned
+	 */
+	function isAbsolute() {
+		return focusedElement !== null && (currentState === States.IDLE || currentState === States.HOP);
+	}
+
 	/**
 	 * Set the current animation and reset the animation timer
 	 * @param {Anim} animation
@@ -1819,7 +1790,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 * @param {string} state
 	 */
 	function setState(state) {
-		console.log("State:", state);
 		stateStart = Date.now();
 		startX = birdX;
 		startY = birdY;
@@ -1827,36 +1797,38 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		if (state === States.IDLE) {
 			setAnimation(Animations.BOB);
 		}
+		if (isAbsolute()) {
+			canvas.classList.add("birb-absolute");
+		} else {
+			canvas.classList.remove("birb-absolute");
+		}
+		setY(birdY);
 	}
 
 	/**
-	 * Set the bird element's X position, with the element origin at the center of the bird
 	 * @param {number} x
 	 */
 	function setX(x) {
-		const mod = getCanvasWidth() / -2 - (WINDOW_PIXEL_SIZE * (direction === Directions.RIGHT ? 2 : -2));
+		let mod = getCanvasWidth() / -2 - (WINDOW_PIXEL_SIZE * (direction === Directions.RIGHT ? 2 : -2));
 		canvas.style.left = `${x + mod}px`;
 	}
 
 	/**
-	 * Set the bird element's Y position, with the element origin at the bottom of the bird
 	 * @param {number} y
 	 */
 	function setY(y) {
-		const mod = getCanvasHeight() + WINDOW_PIXEL_SIZE;
+		let bottom;
-		canvas.style.top = `${y - mod}px`;
+		if (isAbsolute()) {
+			// Position is absolute, convert from fixed
+			bottom = y - window.scrollY;
+		} else {
+			// Position is fixed
+			bottom = y;
+		}
+		canvas.style.bottom = `${bottom}px`;
 	}
-});
 
-/**
+	// Helper functions
- * @param {number} start
- * @param {number} end
- * @param {number} amount
- * @returns {number}
- */
-function linearLerp(start, end, amount) {
-	return start + (end - start) * amount;
-}
 
 	/**
 	 * @param {number} startX
@@ -1873,7 +1845,7 @@ function parabolicLerp(startX, startY, endX, endY, amount, intensity = 1.2) {
 		const distance = Math.sqrt(dx * dx + dy * dy);
 		const angle = Math.atan2(dy, dx);
 		const midX = startX + Math.cos(angle) * distance / 2;
-	const midY = startY + Math.sin(angle) * distance / 2 - distance / 4 * intensity;
+		const midY = startY + Math.sin(angle) * distance / 2 + distance / 4 * intensity;
 		const t = amount;
 		const x = (1 - t) ** 2 * startX + 2 * (1 - t) * t * midX + t ** 2 * endX;
 		const y = (1 - t) ** 2 * startY + 2 * (1 - t) * t * midY + t ** 2 * endY;
@@ -1881,12 +1853,27 @@ function parabolicLerp(startX, startY, endX, endY, amount, intensity = 1.2) {
 	}
 
 	/**
- * @param {number} value
+	 * Parse URL parameters into a key-value map
+	 * @param {string} url
+	 * @returns {Record<string, string>}
 	 */
-function roundToPixel(value) {
+	function parseUrlParams(url) {
-	return Math.round(value / WINDOW_PIXEL_SIZE) * WINDOW_PIXEL_SIZE;
+		const queryString = url.split("?")[1];
+		if (!queryString) return {};
+
+		return queryString.split("&").reduce((params, param) => {
+			const [key, value] = param.split("=");
+			return { ...params, [key]: value };
+		}, {});
 	}
 
+	// Run the birb
+	init();
+	draw();
+}).catch((e) => {
+	error("Error while loading sprite sheets: ", e);
+});
+
 /**
  * @returns {boolean} Whether the user is on a mobile device
  */

build.js

@@ -20,27 +20,48 @@ const spriteSheets = [
 const STYLESHEET_PATH = "./stylesheet.css";
 const STYLESHEET_KEY = "___STYLESHEET___";
 
-let version = "0.0.0";
+const now = new Date();
-// Try to read version from manifest.json
+const versionDate = `${now.getFullYear()}.${now.getMonth() + 1}.${now.getDate()}`;
+
+// Get current build number from manifest.json
+let buildNumber = 0;
 try {
 	const manifest = JSON.parse(readFileSync('manifest.json', 'utf8'));
 	if (manifest.version) {
-		version = manifest.version;
+		if (manifest.version.startsWith(versionDate)) {
+			// Same day, increment build number
+			const parts = manifest.version.split('.');
+			if (parts.length === 4) {
+				buildNumber = parseInt(parts[3], 10) + 1;
+			}
+		}
 	}
 } catch (e) {
 	console.error("Could not read version from manifest.json");
 	throw e;
 }
 
+// Update manifest.json with new version
+const version = `${versionDate}.${buildNumber}`;
+try {
+	const manifest = JSON.parse(readFileSync('manifest.json', 'utf8'));
+	manifest.version = version;
+	writeFileSync('manifest.json', JSON.stringify(manifest, null, 4), 'utf8');
+} catch (e) {
+	console.error("Could not update version in manifest.json");
+	throw e;
+}
+
+
 const userScriptHeader =
 `// ==UserScript==
-// @name         Browser Bird
+// @name         Pocket Bird
 // @namespace    https://idreesinc.com
 // @version      ${version}
 // @description  birb
 // @author       Idrees
-// @downloadURL  https://github.com/IdreesInc/Browser-Bird/raw/refs/heads/main/dist/birb.user.js
+// @downloadURL  https://github.com/IdreesInc/Pocket-Bird/raw/refs/heads/main/dist/birb.user.js
-// @updateURL    https://github.com/IdreesInc/Browser-Bird/raw/refs/heads/main/dist/birb.user.js
+// @updateURL    https://github.com/IdreesInc/Pocket-Bird/raw/refs/heads/main/dist/birb.user.js
 // @match        *://*/*
 // @grant        GM_setValue
 // @grant        GM_getValue

dist/birb.js

@@ -1,6 +1,5 @@
 // @ts-check
 
-// @ts-ignore
 const SHARED_CONFIG = {
 	birbCssScale: 1,
 	uiCssScale: 1,
@@ -9,9 +8,8 @@ const SHARED_CONFIG = {
 	hopDistance: 45,
 };
 
-
 const DESKTOP_CONFIG = {
-	flySpeed: 0.2,
+	flySpeed: 0.25
 };
 
 const MOBILE_CONFIG = {
@@ -28,17 +26,6 @@ const BIRB_CSS_SCALE = CONFIG.birbCssScale;
 const UI_CSS_SCALE = CONFIG.uiCssScale;
 const CANVAS_PIXEL_SIZE = CONFIG.canvasPixelSize;
 const WINDOW_PIXEL_SIZE = CANVAS_PIXEL_SIZE * BIRB_CSS_SCALE;
-const HOP_SPEED = CONFIG.hopSpeed;
-const FLY_SPEED = CONFIG.flySpeed;
-const HOP_DISTANCE = CONFIG.hopDistance;
-// Time in milliseconds until the user is considered AFK
-const AFK_TIME = debugMode ? 0 : 1000 * 30;
-const SPRITE_HEIGHT = 32;
-const MENU_ID = "birb-menu";
-const MENU_EXIT_ID = "birb-menu-exit";
-const FIELD_GUIDE_ID = "birb-field-guide";
-const FEATHER_ID = "birb-feather";
-
 
 const DEFAULT_SETTINGS = {
 	birbMode: false
@@ -48,6 +35,23 @@ const DEFAULT_SETTINGS = {
  * @typedef {typeof DEFAULT_SETTINGS} Settings
  */
 
+/**
+ * @typedef {Object} SavedStickyNote
+ * @property {string} id
+ * @property {string} site
+ * @property {string} content
+ * @property {number} top
+ * @property {number} left
+ */
+
+/**
+ * @typedef {Object} BirbSaveData
+ * @property {string[]} unlockedSpecies
+ * @property {string} currentSpecies
+ * @property {Partial<Settings>} settings
+ * @property {SavedStickyNote[]} [stickyNotes]
+ */
+
 /** @type {Partial<Settings>} */
 let userSettings = {};
 
@@ -66,13 +70,18 @@ const STYLESHEET = `:root {
 
 #birb {
 	image-rendering: pixelated;
-	position: absolute;
+	position: fixed;
+	bottom: 0;
 	transform: scale(var(--birb-scale)) !important;
 	transform-origin: bottom;
 	z-index: 2147483638 !important;
 	cursor: pointer;
 }
 
+.birb-absolute {
+	position: absolute !important;
+}
+
 .birb-decoration {
 	image-rendering: pixelated;
 	position: fixed;
@@ -289,8 +298,8 @@ const STYLESHEET = `:root {
 	flex-direction: row;
 	padding-top: 4px;
 	padding-bottom: 4px;
-	padding-left: 15px;
+	padding-left: 10px;
-	padding-right: 15px;
+	padding-right: 10px;
 	box-sizing: border-box;
 }
 
@@ -337,12 +346,12 @@ const STYLESHEET = `:root {
 }
 
 .birb-field-guide-description {
-	width: calc(100% - 16px);
+	width: calc(100% - 20px);
-	margin-top: 10px;
+	margin-top: 5px;
 	padding: 8px;
 	padding-top: 4px;
 	padding-bottom: 4px;
-	margin-bottom: 6px;
+	margin-bottom: 10px;
 	font-size: 14px;
 	box-sizing: border-box;
 	color: rgb(124, 108, 75);
@@ -718,6 +727,7 @@ const Directions = {
 };
 
 const SPRITE_WIDTH = 32;
+const SPRITE_HEIGHT = 32;
 const DECORATIONS_SPRITE_WIDTH = 48;
 const FEATHER_SPRITE_WIDTH = 32;
 
@@ -725,6 +735,34 @@ const SPRITE_SHEET = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAUAAAAAgCAYA
 const DECORATIONS_SPRITE_SHEET = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAAAXNSR0IArs4c6QAAAPNJREFUaIHtmTESgzAMBHWZDC+gp0vP/x9Bn44+L6BRmrhJA4csM05uGzfY1s1JxggzIYQQQgghxEnATnB3zwikAICKiXq4BE/uwaxvn/UPb3BnNwFg27Ky0w6vzRp8S4mkIbQD3wzzFJofdTMkYJgn89czFADGKSSiSgphfFBjTaoIKC4cHWvSxIFMmjiQSYoDLUlxoCVywOwHHWjpROop1IL/vsxty2oYO77M1QggSvcpJAFXE66BPfa+2C4v4j2yi7z7FJKAq6FrwN3TO3MMlAAAKO3F2sVZTiu2N9p9CnUv4FR7PbMG2BQ69SJL/kVA8QauAnHUj36BVwAAAABJRU5ErkJggg==";
 const FEATHER_SPRITE_SHEET = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAAXNSR0IArs4c6QAAARhJREFUWIXtlbENwjAQRf8hSiZIRQ+9WQNRUFIAKzACBSsAA1Ag1mAABqCCBomG3hQQ9OMEx4ZDNH5SikSJ3/fZ5wCJRCKRSPwZ0RzMWmtLAhGvQyUAi9mXP/aFaGjJRQQiguHihMvcFMJUVUYlAMuHixPGy4en1WmVQqgHYHkuZjiEj6a2/LjtYzTY0eiZbgC37Mxh1UN3sn/dr6cCz/LHB/DJj9s+2oMdbtdz6TtfFwQHcMvOInfmQNjsgchNWLXmdfK6gyioAu/6uKrsm1kWLAciKuCuey5nYuXAh234bdmZ6INIUw4E/Ix49xtjCmXfzLL8nY/ktdgnAKwxxgIoXIyqmAOwvIqfiN0ALNd21HYBO9XXGMAdnZTYyHWzWjQAAAAASUVORK5CYII=";
 
+const MENU_ID = "birb-menu";
+const MENU_EXIT_ID = "birb-menu-exit";
+const FIELD_GUIDE_ID = "birb-field-guide";
+const FEATHER_ID = "birb-feather";
+
+const HOP_SPEED = CONFIG.hopSpeed;
+const FLY_SPEED = CONFIG.flySpeed;
+const HOP_DISTANCE = CONFIG.hopDistance;
+/** Speed at which the feather falls per tick */
+const FEATHER_FALL_SPEED = 1;
+/** Time in milliseconds until the user is considered AFK */
+const AFK_TIME = debugMode ? 0 : 1000 * 30;
+const UPDATE_INTERVAL = 1000 / 60; // 60 FPS
+// Per-frame chances
+const HOP_CHANCE = 1 / (60 * 3); // 3 seconds
+const FOCUS_SWITCH_CHANCE = 1 / (60 * 20); // 20 seconds
+const FEATHER_CHANCE = 1 / (60 * 60 * 60 * 2); // 2 hours
+/** Multiplier after petting that increases the feather drop chance */
+const PET_FEATHER_BOOST = 2;
+/** How long the pet boost lasts in milliseconds */
+const PET_BOOST_DURATION = 1000 * 60 * 5;
+const MIN_FOCUS_ELEMENT_WIDTH = 100;
+const MIN_FOCUS_ELEMENT_TOP = 80;
+/** Time between checking whether the URL has changed */
+const URL_CHECK_INTERVAL = 500;
+/** Time after petting before the menu can be opened */
+const PET_MENU_COOLDOWN = 1000;
+
 /**
  * Load the sprite sheet and return the pixel-map template
  * @param {string} dataUri
@@ -781,8 +819,14 @@ function loadSpriteSheetPixels(dataUri, templateColors = true) {
 	});
 }
 
-// @ts-ignore
+log("Loading sprite sheets...");
-Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATIONS_SPRITE_SHEET, false), loadSpriteSheetPixels(FEATHER_SPRITE_SHEET)]).then(([birbPixels, decorationPixels, featherPixels]) => {
+
+Promise.all([
+	loadSpriteSheetPixels(SPRITE_SHEET),
+	loadSpriteSheetPixels(DECORATIONS_SPRITE_SHEET, false),
+	loadSpriteSheetPixels(FEATHER_SPRITE_SHEET)
+]).then(([birbPixels, decorationPixels, featherPixels]) => {
+	
 	const SPRITE_SHEET = birbPixels;
 	const DECORATIONS_SPRITE_SHEET = decorationPixels;
 	const FEATHER_SPRITE_SHEET = featherPixels;
@@ -935,8 +979,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	const menuItems = [
 		new MenuItem(`Pet ${birdBirb()}`, pet),
 		new MenuItem("Field Guide", insertFieldGuide),
-		// new MenuItem("Decorations", insertDecoration),
-		new DebugMenuItem("Applications", () => switchMenuItems(otherItems), false),
 		new MenuItem("Sticky Note", newStickyNote),
 		new MenuItem(`Hide ${birdBirb()}`, hideBirb),
 		new DebugMenuItem("Freeze/Unfreeze", () => {
@@ -965,39 +1007,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		})
 	];
 
-	const otherItems = [
-		new MenuItem("Go Back", () => switchMenuItems(menuItems), false),
-		new Separator(),
-		new MenuItem("Video Games", () => switchMenuItems(gameItems), false),
-		new MenuItem("Utilities", () => switchMenuItems(utilityItems), false),
-		new MenuItem("Music Player", () => insertMusicPlayer(), false),
-	];
-
-	const gameItems = [
-		new MenuItem("Go Back", () => switchMenuItems(otherItems), false),
-		new Separator(),
-		new MenuItem("Pinball", () => insertPico8("Terra Nova Pinball", "terra_nova_pinball")),
-		new MenuItem("Pico Dino", () => insertPico8("Pico Dino", "picodino")),
-		new MenuItem("Woodworm", () => insertPico8("Woodworm", "woodworm")),
-		new MenuItem("Pico and Chill", () => insertPico8("Pico and Chill", "picochill")),
-		new MenuItem("Lani's Trek", () => insertPico8("Celeste 2 Lani's Trek", "celeste_classic_2")),
-		new MenuItem("Tetraminis", () => insertPico8("Tetraminis", "tetraminisdeffect")),
-		// new MenuItem("Pool", () => insertPico8("Pool", "mot_pool")),
-	];
-
-	const utilityItems = [
-		new MenuItem("Go Back", () => switchMenuItems(otherItems), false),
-		new Separator(),
-		new MenuItem("Pomodoro Timer", () => insertPico8("Pomodoro", "pomodorotimerv1")),
-		new MenuItem("Ohm Calculator", () => insertPico8("Resistor Calculator", "picoohm")),
-		new MenuItem("Wobblepaint	", () => insertPico8("Wobblepaint", "wobblepaint")),
-	];
-
 	const styleElement = document.createElement("style");
 	const canvas = document.createElement("canvas");
 
 	/** @type {CanvasRenderingContext2D} */
-	// @ts-ignore
+	// @ts-expect-error
 	const ctx = canvas.getContext("2d");
 
 	const States = {
@@ -1014,7 +1028,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	let ticks = 0;
 	// Bird's current position
 	let birdY = 0;
-	let birdX = 0;
+	let birdX = 40;
 	// Bird's starting position (when flying)
 	let startX = 0;
 	let startY = 0;
@@ -1023,6 +1037,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	let targetY = 0;
 	/** @type {HTMLElement|null} */
 	let focusedElement = null;
+	let focusedBounds = { left: 0, right: 0, top: 0 };
 	let lastActionTimestamp = Date.now();
 	/** @type {number[]} */
 	let petStack = [];
@@ -1033,12 +1048,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	/** @type {StickyNote[]} */
 	let stickyNotes = [];
 
-
 	/**
 	 * @returns {boolean} Whether the script is running in a userscript extension context
 	 */
 	function isUserScript() {
-		// @ts-ignore
+		// @ts-expect-error
 		return typeof GM_getValue === "function";
 	}
 
@@ -1051,9 +1065,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function load() {
 		/** @type {Record<string, any>} */
 		let saveData = {};
+
 		if (isUserScript()) {
 			log("Loading save data from UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			saveData = GM_getValue("birbSaveData", {}) ?? {};
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, loading save data from localStorage");
@@ -1061,14 +1076,18 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		} else {
 			log("Not a UserScript");
 		}
+
 		debug("Loaded data: " + JSON.stringify(saveData));
+
 		if (!saveData.settings) {
 			log("No user settings found in save data, starting fresh");
 		}
+
 		userSettings = saveData.settings ?? {};
 		unlockedSpecies = saveData.unlockedSpecies ?? [DEFAULT_BIRD];
 		currentSpecies = saveData.currentSpecies ?? DEFAULT_BIRD;
 		stickyNotes = [];
+
 		if (saveData.stickyNotes) {
 			for (let note of saveData.stickyNotes) {
 				if (note.id) {
@@ -1076,17 +1095,19 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				}
 			}
 		}
+
 		log(stickyNotes.length + " sticky notes loaded");
 		switchSpecies(currentSpecies);
 	}
 
 	function save() {
-		/** @type {Record<string, any>} */
+		/** @type {BirbSaveData} */
-		let saveData = {
+		const saveData = {
-			unlockedSpecies: unlockedSpecies,
+			unlockedSpecies,
-			currentSpecies: currentSpecies,
+			currentSpecies,
 			settings: userSettings
 		};
+
 		if (stickyNotes.length > 0) {
 			saveData.stickyNotes = stickyNotes.map(note => ({
 				id: note.id,
@@ -1096,9 +1117,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				left: note.left
 			}));
 		}
+
 		if (isUserScript()) {
 			log("Saving data to UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			GM_setValue("birbSaveData", saveData);
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, saving data to localStorage");
@@ -1111,7 +1133,7 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function resetSaveData() {
 		if (isUserScript()) {
 			log("Resetting save data in UserScript storage");
-			// @ts-ignore
+			// @ts-expect-error
 			GM_deleteValue("birbSaveData");
 		} else if (isTestEnvironment()) {
 			log("Test environment detected, resetting save data in localStorage");
@@ -1140,8 +1162,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	function init() {
 		if (window !== window.top) {
 			// Skip installation if within an iframe
+			log("In iframe, skipping Birb script initialization");
 			return;
 		}
+		log("Sprite sheets loaded successfully, initializing bird...");
 
 		// Preload font
 		const MONOCRAFT_SRC = "https://cdn.jsdelivr.net/gh/idreesinc/Monocraft@99b32ab40612ff2533a69d8f14bd8b3d9e604456/dist/Monocraft.otf";
@@ -1173,20 +1197,8 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		canvas.height = SPRITE_HEIGHT * CANVAS_PIXEL_SIZE;
 		document.body.appendChild(canvas);
 
-		/** @type {NodeJS.Timeout} */
-		let scrollTimeout;
 		window.addEventListener("scroll", () => {
-			// TODO: Only do this if focused on the ground
-			if (focusedElement === null && currentState !== States.FLYING) {
-				canvas.style.transition = "opacity 0.2s";
-				canvas.style.opacity = "0";
-			}
 			lastActionTimestamp = Date.now();
-			clearTimeout(scrollTimeout);
-			scrollTimeout = setTimeout(() => {
-				canvas.style.transition = "opacity 0.4s";
-				canvas.style.opacity = "1";
-			}, 100);
 		});
 
 		onClick(document, (e) => {
@@ -1197,6 +1209,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		});
 
 		onClick(canvas, () => {
+			if (currentAnimation === Animations.HEART && (Date.now() - lastPetTimestamp < PET_MENU_COOLDOWN)) {
+				// Currently being pet, don't open menu
+				return;
+			}
 			insertMenu();
 		});
 
@@ -1209,13 +1225,17 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				}
 				const pets = petStack.filter((time) => Date.now() - time < 1000).length;
 				if (pets >= 3) {
-					setAnimation(Animations.HEART);
+					pet();
 					// Clear the stack
 					petStack = [];
 				}
 			}
 		});
 
+		canvas.addEventListener("touchmove", (e) => {
+			pet();
+		});
+
 		drawStickyNotes();
 
 		let lastUrl = (window.location.href ?? "").split("?")[0];
@@ -1226,31 +1246,11 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 				lastUrl = currentUrl;
 				drawStickyNotes();
 			}
-		}, 500);
+		}, URL_CHECK_INTERVAL);
 
-		setInterval(update, 1000 / 60);
+		setInterval(update, UPDATE_INTERVAL);
-
-		birdY = getWindowBottom();
-
-		// TODO: For testing only
-		hop();
 	}
 
-	function drawStickyNotes() {
-		// Remove all existing sticky notes
-		const existingNotes = document.querySelectorAll(".birb-sticky-note");
-		existingNotes.forEach(note => note.remove());
-		// Render all sticky notes
-		for (let stickyNote of stickyNotes) {
-			if (isStickyNoteApplicable(stickyNote)) {
-				renderStickyNote(stickyNote);
-			}
-		}
-	}
-
-	/**
-	 * Run the bird's behavior logic
-	 */
 	function update() {
 		ticks++;
 
@@ -1260,69 +1260,65 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 			// Won't be restored on fullscreen exit
 		}
 
-		if (currentState === States.IDLE) {
+		if (currentState === States.IDLE && !frozen && !isMenuOpen()) {
-			if (Math.random() < 1 / (60 * 3) && currentAnimation !== Animations.HEART && !isMenuOpen()) {
+			if (Math.random() < HOP_CHANCE && currentAnimation !== Animations.HEART) {
 				hop();
-			} else if (Math.random() < 1 / (60 * 20) && Date.now() - lastActionTimestamp > AFK_TIME && !isMenuOpen()) {
+			} else if (Date.now() - lastActionTimestamp > AFK_TIME) {
+				// Idle for a while, do something
+				if (focusedElement === null) {
+					// Fly to an element
+					focusOnElement();
+					lastActionTimestamp = Date.now();
+				} else if (Math.random() < FOCUS_SWITCH_CHANCE) {
+					// Fly to another element if idle for a longer while
 					focusOnElement();
 					lastActionTimestamp = Date.now();
 				}
 			}
-
-		const FEATHER_CHANCE = 1 / (60 * 60 * 60 * 2); // 1 every 2 hours (ticks * seconds * minutes * hours)
-		// Double the chance of a feather if recently pet
-		let petMod = Date.now() - lastPetTimestamp < 1000 * 60 * 5 ? 2 : 1;
-		if (visible && Math.random() < FEATHER_CHANCE * petMod) {
-			lastPetTimestamp = 0;
-			activateFeather();
-		}
-		updateFeather();
-	}
-
-	/**
-	 * Render the bird in the dom and update its position if necessary
-	 */
-	function draw() {
-		requestAnimationFrame(draw);
-
-		if (!visible) {
-			return;
-		}
-
-		// Update the bird's position
-		if (currentState === States.IDLE) {
-			if (focusedElement !== null) {
-				birdY = getFocusedElementY();
-				if (!isWithinHorizontalBounds(birdX)) {
-					focusOnGround();
-				}
-			} else {
-				// Ground the bird
-				birdY = getWindowBottom();
-			}
-		} else if (currentState === States.FLYING) {
-			// Fly to target location (even if in the air)
-			if (updateParabolicPath(FLY_SPEED)) {
-				setState(States.IDLE);
-			}
 		} else if (currentState === States.HOP) {
 			if (updateParabolicPath(HOP_SPEED)) {
 				setState(States.IDLE);
 			}
 		}
 
-		if (focusedElement === null) {
+		// Double the chance of a feather if recently pet
-			if (Date.now() - lastActionTimestamp > AFK_TIME && !isMenuOpen()) {
+		const petMod = Date.now() - lastPetTimestamp < PET_BOOST_DURATION ? PET_FEATHER_BOOST : 1;
-				// Fly to an element if the user is AFK
+		if (visible && Math.random() < FEATHER_CHANCE * petMod) {
-				// focusOnElement();
+			lastPetTimestamp = 0;
-				// lastActionTimestamp = Date.now();
+			activateFeather();
 		}
-		} else if (focusedElement !== null) {
+		updateFeather();
-			targetY = getFocusedElementY();
+	}
-			if (targetY < window.scrollY || targetY > window.scrollY + window.innerHeight) {
+
-				// Fly to ground if the focused element moves out of bounds
+	function draw() {
+		requestAnimationFrame(draw);
+
+		if (!visible) {
+			return;
+		}
+
+		updateFocusedElementBounds();
+
+		// Update the bird's position
+		if (currentState === States.IDLE) {
+			if (focusedElement && !isWithinHorizontalBounds()) {
 				focusOnGround();
 			}
+			birdY = getFocusedY();
+		} else if (currentState === States.FLYING) {
+			// Fly to target location (even if in the air)
+			if (updateParabolicPath(FLY_SPEED)) {
+				setState(States.IDLE);
+			}
+		}
+
+		const oldTargetY = targetY;
+		targetY = getFocusedY();
+		// Adjust startY to account for scrolling
+		startY += targetY - oldTargetY;
+		if (targetY < 0 || targetY > window.innerHeight) {
+			// Fly to ground if the focused element moves out of bounds
+			focusOnGround();
 		}
 
 		ctx.clearRect(0, 0, canvas.width, canvas.height);
@@ -1335,9 +1331,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		setY(birdY);
 	}
 
-	init();
-	draw();
-
 	function newStickyNote() {
 		const id = Date.now().toString();
 		const site = window.location.href;
@@ -1438,17 +1431,8 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 			return false;
 		}
 
-		/** @type {Record<string, string>} */
+		const stickyNoteParams = parseUrlParams(stickyNoteUrl);
-		const stickyNoteParams = stickyNoteUrl.split("?")[1]?.split("&").reduce((params, param) => {
+		const currentParams = parseUrlParams(currentUrl);
-			const [key, value] = param.split("=");
-			return { ...params, [key]: value };
-		}, {});
-
-		/** @type {Record<string, string>} */
-		const currentParams = currentUrl.split("?")[1]?.split("&").reduce((params, param) => {
-			const [key, value] = param.split("=");
-			return { ...params, [key]: value };
-		}, {});
 
 		debug("Comparing params: ", stickyNoteParams, currentParams);
 
@@ -1460,6 +1444,18 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return true;
 	}
 
+	function drawStickyNotes() {
+		// Remove all existing sticky notes
+		const existingNotes = document.querySelectorAll(".birb-sticky-note");
+		existingNotes.forEach(note => note.remove());
+		// Render all sticky notes
+		for (let stickyNote of stickyNotes) {
+			if (isStickyNoteApplicable(stickyNote)) {
+				renderStickyNote(stickyNote);
+			}
+		}
+	}
+
 	/**
 	 * Create an HTML element with the specified parameters
 	 * @param {string} className
@@ -1479,6 +1475,42 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return element;
 	}
 
+	/**
+	 * Create a window element with header and content
+	 * @param {string} id
+	 * @param {string} title
+	 * @param {string} contentHtml
+	 * @param {() => void} [onClose]
+	 * @returns {HTMLElement}
+	 */
+	function createWindow(id, title, contentHtml, onClose) {
+		const window = makeElement("birb-window", undefined, id);
+		window.innerHTML = `
+			<div class="birb-window-header">
+				<div class="birb-window-title">${title}</div>
+				<div class="birb-window-close">x</div>
+			</div>
+			<div class="birb-window-content">
+				${contentHtml}
+			</div>
+		`;
+
+		document.body.appendChild(window);
+		makeDraggable(window.querySelector(".birb-window-header"));
+
+		const closeButton = window.querySelector(".birb-window-close");
+		if (closeButton) {
+			makeClosable(() => {
+				if (onClose) {
+					onClose();
+				}
+				window.remove();
+			}, closeButton);
+		}
+
+		return window;
+	}
+
 	function insertDecoration() {
 		// Create a canvas element for the decoration
 		const decorationCanvas = document.createElement("canvas");
@@ -1558,21 +1590,16 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 
 	function updateFeather() {
 		const feather = document.querySelector("#birb-feather");
-		const featherGravity = 1;
 		if (!feather || !(feather instanceof HTMLElement)) {
 			return;
 		}
-		const y = parseInt(feather.style.top || "0") + featherGravity;
+		const y = parseInt(feather.style.top || "0") + FEATHER_FALL_SPEED;
 		feather.style.top = `${Math.min(y, window.innerHeight - feather.offsetHeight)}px`;
 		if (y < window.innerHeight - feather.offsetHeight) {
 			feather.style.left = `${Math.sin(3.14 * 2 * (ticks / 120)) * 25}px`;
 		}
 	}
 
-
-	// insertDecoration();
-	// insertFieldGuide();
-
 	/**
 	 * @param {HTMLElement} element
 	 */
@@ -1589,28 +1616,14 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		if (document.querySelector("#" + FIELD_GUIDE_ID)) {
 			return;
 		}
-		let html = `
+
-			<div class="birb-window-header">
+		const modal = createWindow("birb-modal", title, `
-				<div class="birb-window-title">${title}</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content">
 			<div class="birb-message-content">
 				${message}
 			</div>
-			</div>`
+		`);
-		const modal = makeElement("birb-window");
-		modal.style.width = "270px";
-		modal.innerHTML = html;
-		document.body.appendChild(modal);
-		makeDraggable(modal.querySelector(".birb-window-header"));
 
-		const closeButton = modal.querySelector(".birb-window-close");
+		modal.style.width = "270px";
-		if (closeButton) {
-			makeClosable(() => {
-				modal.remove();
-			}, closeButton);
-		}
 		centerElement(modal);
 	}
 
@@ -1719,60 +1732,10 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		}
 	}
 
-	// insertPico8();
-
 	function isSafari() {
 		return /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
 	}
 
-	/**
-	 * @param {string} name
-	 * @param {string} pid
-	 */
-	function insertPico8(name, pid) {
-		let html = `
-			<div class="birb-window-header">
-				<div class="birb-window-title">${name}</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content birb-pico-8-content">
-				<iframe src="https://www.lexaloffle.com/bbs/widget.php?pid=${pid}" scrolling='${isSafari() ? "yes" : "no"}'></iframe>
-			</div>`
-		const pico8 = makeElement("birb-window");
-		pico8.innerHTML = html;
-		document.body.appendChild(pico8);
-		makeDraggable(pico8.querySelector(".birb-window-header"));
-		const close = pico8.querySelector(".birb-window-close");
-		if (close) {
-			makeClosable(() => {
-				pico8.remove();
-			}, close);
-		}
-		centerElement(pico8);
-	}
-
-	function insertMusicPlayer() {
-		let html = `
-			<div class="birb-window-header">
-				<div class="birb-window-title">Music Player</div>
-				<div class="birb-window-close">x</div>
-			</div>
-			<div class="birb-window-content birb-music-player-content">
-			<iframe style="border-radius:12px" src="https://open.spotify.com/embed/playlist/31FWVQBp3WQydWLNhO0ACi?utm_source=generator" width="250" height="352" frameBorder="0" allowfullscreen="" allow="autoplay; clipboard-write; encrypted-media; fullscreen; picture-in-picture" loading="lazy"></iframe>
-		</div>`;
-		const pico8 = makeElement("birb-window");
-		pico8.innerHTML = html;
-		document.body.appendChild(pico8);
-		makeDraggable(pico8.querySelector(".birb-window-header"));
-		const close = pico8.querySelector(".birb-window-close");
-		if (close) {
-			makeClosable(() => {
-				pico8.remove();
-			}, close);
-		}
-		centerElement(pico8);
-	}
-
 	/**
 	 * @param {string} type
 	 */
@@ -1886,7 +1849,23 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 */
 	function onClick(element, action) {
 		element.addEventListener("click", (e) => action(e));
-		element.addEventListener("touchstart", (e) => action(e));
+		element.addEventListener("touchend", (e) => {
+			if (e instanceof TouchEvent === false) {
+				return;
+			} else if (element instanceof HTMLElement === false) {
+				return;
+			}
+			const touch = e.changedTouches[0];
+			const rect = element.getBoundingClientRect();
+			if (
+				touch.clientX >= rect.left &&
+				touch.clientX <= rect.right &&
+				touch.clientY >= rect.top &&
+				touch.clientY <= rect.bottom
+			) {
+				action(e);
+			}
+		});
 	}
 
 	/**
@@ -2020,63 +1999,70 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	}
 
 	function getFocusedElementRandomX() {
-		if (focusedElement === null) {
+		return Math.random() * (focusedBounds.right - focusedBounds.left) + focusedBounds.left;
-			return Math.random() * window.innerWidth;
-		}
-		const rect = focusedElement.getBoundingClientRect();
-		return Math.random() * (rect.right - rect.left) + rect.left + window.scrollX;
 	}
 
-	function getFocusedElementY() {
+	function isWithinHorizontalBounds() {
-		if (focusedElement === null) {
+		return birdX >= focusedBounds.left && birdX <= focusedBounds.right;
-			return getWindowBottom();
 	}
-		const rect = focusedElement.getBoundingClientRect();
+
-		return rect.top + window.scrollY;
+	function getFocusedY() {
+		return getFullWindowHeight() - focusedBounds.top;
 	}
 
 	/**
-	 * @param {number} x 
+	 * @returns The render-safe height of the inner browser window
-	 * @returns {boolean} Whether the x coordinate is within the horizontal bounds of the focused element
 	 */
-	function isWithinHorizontalBounds(x) {
+	function getSafeWindowHeight() {
-		if (focusedElement === null) {
+		// Necessary because iOS 26 Safari is terrible and won't render
-			return true;
+		// fixed elements behind the address bar
+		return window.innerHeight;
 	}
-		const rect = focusedElement.getBoundingClientRect();
+
-		return x >= rect.left && x <= rect.right;
+	/**
+	 * @returns The true height of the inner browser window
+	 */
+	function getFullWindowHeight() {
+		return document.documentElement.clientHeight;
 	}
 
 	function focusOnGround() {
-		if (focusedElement === null) {
-			// Already focused on ground
-			return;
-		}
 		console.log("Focusing on ground");
 		focusedElement = null;
-		flyTo(Math.random() * window.innerWidth, getWindowBottom());
+		focusedBounds = { left: 0, right: window.innerWidth, top: getSafeWindowHeight() };
+		flyTo(Math.random() * window.innerWidth, 0);
 	}
 
 	function focusOnElement() {
 		if (frozen) {
 			return;
 		}
-		console.log("Focusing on element");
 		const elements = document.querySelectorAll("img, video");
 		const inWindow = Array.from(elements).filter((img) => {
 			const rect = img.getBoundingClientRect();
-			return rect.left >= 0 && rect.top >= 80 && rect.right <= window.innerWidth && rect.top <= window.innerHeight;
+			return rect.left >= 0 && rect.top >= MIN_FOCUS_ELEMENT_TOP && rect.right <= window.innerWidth && rect.top <= window.innerHeight;
 		});
-		const MIN_WIDTH = 100;
 		/** @type {HTMLElement[]} */
-		// @ts-ignore
+		// @ts-expect-error
-		const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_WIDTH);
+		const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_FOCUS_ELEMENT_WIDTH);
 		if (largeElements.length === 0) {
 			return;
 		}
 		const randomElement = largeElements[Math.floor(Math.random() * largeElements.length)];
 		focusedElement = randomElement;
-		flyTo(getFocusedElementRandomX(), getFocusedElementY());
+		log("Focusing on element: ", focusedElement);
+		updateFocusedElementBounds();
+		flyTo(getFocusedElementRandomX(), getFocusedY());
+	}
+
+	function updateFocusedElementBounds() {
+		if (focusedElement === null) {
+			// Update ground location to bottom of window
+			focusedBounds = { left: 0, right: window.innerWidth, top: getFullWindowHeight() };
+			return;
+		}
+		const { left, right, top } = focusedElement.getBoundingClientRect();
+		focusedBounds = { left, right, top };
 	}
 
 	function getCanvasWidth() {
@@ -2087,40 +2073,24 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		return canvas.height * BIRB_CSS_SCALE
 	}
 
-	function getWindowBottom() {
-		return window.scrollY + window.innerHeight;
-	}
-
 	function hop() {
 		if (frozen) {
 			return;
 		}
 		if (currentState === States.IDLE) {
-			// Determine bounds for hopping
-			let minX = 0;
-			let maxX = window.innerWidth;
-			let y = getWindowBottom();
-			if (focusedElement !== null) {
-				// Hop on the element
-				const rect = focusedElement.getBoundingClientRect();
-				minX = rect.left;
-				maxX = rect.right;
-				y = window.innerHeight - rect.top;
-			}
 			setState(States.HOP);
 			setAnimation(Animations.FLYING);
-			if ((Math.random() < 0.5 && birdX - HOP_DISTANCE > minX) || birdX + HOP_DISTANCE > maxX) {
+			if ((Math.random() < 0.5 && birdX - HOP_DISTANCE > focusedBounds.left) || birdX + HOP_DISTANCE > focusedBounds.right) {
 				targetX = birdX - HOP_DISTANCE;
 			} else {
 				targetX = birdX + HOP_DISTANCE;
 			}
-			targetY = y;
+			targetY = getFocusedY();
-			console.log("hopping from", birdX, birdY, "to", targetX, targetY);
 		}
 	}
 
 	function pet() {
-		if (currentState === States.IDLE) {
+		if (currentState === States.IDLE && currentAnimation !== Animations.HEART) {
 			setAnimation(Animations.HEART);
 			lastPetTimestamp = Date.now();
 		}
@@ -2136,13 +2106,19 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 * @param {number} y
 	 */
 	function flyTo(x, y) {
-		console.log("Flying to", x, y);
 		targetX = x;
 		targetY = y;
 		setState(States.FLYING);
 		setAnimation(Animations.FLYING);
 	}
 
+	/**
+	 * @returns {boolean} Whether the bird should be absolutely positioned
+	 */
+	function isAbsolute() {
+		return focusedElement !== null && (currentState === States.IDLE || currentState === States.HOP);
+	}
+
 	/**
 	 * Set the current animation and reset the animation timer
 	 * @param {Anim} animation
@@ -2157,7 +2133,6 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 	 * @param {string} state
 	 */
 	function setState(state) {
-		console.log("State:", state);
 		stateStart = Date.now();
 		startX = birdX;
 		startY = birdY;
@@ -2165,36 +2140,38 @@ Promise.all([loadSpriteSheetPixels(SPRITE_SHEET), loadSpriteSheetPixels(DECORATI
 		if (state === States.IDLE) {
 			setAnimation(Animations.BOB);
 		}
+		if (isAbsolute()) {
+			canvas.classList.add("birb-absolute");
+		} else {
+			canvas.classList.remove("birb-absolute");
+		}
+		setY(birdY);
 	}
 
 	/**
-	 * Set the bird element's X position, with the element origin at the center of the bird
 	 * @param {number} x
 	 */
 	function setX(x) {
-		const mod = getCanvasWidth() / -2 - (WINDOW_PIXEL_SIZE * (direction === Directions.RIGHT ? 2 : -2));
+		let mod = getCanvasWidth() / -2 - (WINDOW_PIXEL_SIZE * (direction === Directions.RIGHT ? 2 : -2));
 		canvas.style.left = `${x + mod}px`;
 	}
 
 	/**
-	 * Set the bird element's Y position, with the element origin at the bottom of the bird
 	 * @param {number} y
 	 */
 	function setY(y) {
-		const mod = getCanvasHeight() + WINDOW_PIXEL_SIZE;
+		let bottom;
-		canvas.style.top = `${y - mod}px`;
+		if (isAbsolute()) {
+			// Position is absolute, convert from fixed
+			bottom = y - window.scrollY;
+		} else {
+			// Position is fixed
+			bottom = y;
+		}
+		canvas.style.bottom = `${bottom}px`;
 	}
-});
 
-/**
+	// Helper functions
- * @param {number} start
- * @param {number} end
- * @param {number} amount
- * @returns {number}
- */
-function linearLerp(start, end, amount) {
-	return start + (end - start) * amount;
-}
 
 	/**
 	 * @param {number} startX
@@ -2211,7 +2188,7 @@ function parabolicLerp(startX, startY, endX, endY, amount, intensity = 1.2) {
 		const distance = Math.sqrt(dx * dx + dy * dy);
 		const angle = Math.atan2(dy, dx);
 		const midX = startX + Math.cos(angle) * distance / 2;
-	const midY = startY + Math.sin(angle) * distance / 2 - distance / 4 * intensity;
+		const midY = startY + Math.sin(angle) * distance / 2 + distance / 4 * intensity;
 		const t = amount;
 		const x = (1 - t) ** 2 * startX + 2 * (1 - t) * t * midX + t ** 2 * endX;
 		const y = (1 - t) ** 2 * startY + 2 * (1 - t) * t * midY + t ** 2 * endY;
@@ -2219,12 +2196,27 @@ function parabolicLerp(startX, startY, endX, endY, amount, intensity = 1.2) {
 	}
 
 	/**
- * @param {number} value
+	 * Parse URL parameters into a key-value map
+	 * @param {string} url
+	 * @returns {Record<string, string>}
 	 */
-function roundToPixel(value) {
+	function parseUrlParams(url) {
-	return Math.round(value / WINDOW_PIXEL_SIZE) * WINDOW_PIXEL_SIZE;
+		const queryString = url.split("?")[1];
+		if (!queryString) return {};
+
+		return queryString.split("&").reduce((params, param) => {
+			const [key, value] = param.split("=");
+			return { ...params, [key]: value };
+		}, {});
 	}
 
+	// Run the birb
+	init();
+	draw();
+}).catch((e) => {
+	error("Error while loading sprite sheets: ", e);
+});
+
 /**
  * @returns {boolean} Whether the user is on a mobile device
  */

manifest.json

@@ -1,13 +1,17 @@
 {
     "manifest_version": 3,
-	"name": "Browser Bird",
+    "name": "Pocket Bird",
     "description": "It's a bird, in your browser. What more could you want?",
-	"version": "2025.9.16.1",
+    "version": "2025.10.25.130",
     "homepage_url": "https://idreesinc.com",
     "content_scripts": [
         {
-		"matches": ["<all_urls>"],
+            "matches": [
-		"js": ["birb.js"]
+                "<all_urls>"
+            ],
+            "js": [
+                "./dist/birb.js"
+            ]
         }
     ],
     "permissions": [
@@ -16,8 +20,12 @@
     ],
     "web_accessible_resources": [
         {
-			"resources": ["images/*"],
+            "resources": [
-			"matches": ["<all_urls>"]
+                "images/*"
+            ],
+            "matches": [
+                "<all_urls>"
+            ]
         }
     ],
     "browser_specific_settings": {
@@ -26,4 +34,3 @@
         }
     }
 }
-  

package.json

@@ -7,7 +7,7 @@
   "type": "module",
   "scripts": {
     "build": "node build.js",
-    "dev": "nodemon --watch birb.js --watch stylesheet.css --watch build.js --watch manifest.json --exec \"npm run build\""
+    "dev": "nodemon --watch birb.js --watch stylesheet.css --watch build.js --exec \"npm run build\""
   },
   "devDependencies": {
     "nodemon": "^3.1.10"

preview/index.html

@@ -12,7 +12,7 @@
         }
 
         #spacer {
-            height: 200vh;
+            height: 100vh;
         }
     </style>
 </head>

stylesheet.css

@@ -13,13 +13,18 @@
 
 #birb {
 	image-rendering: pixelated;
-	position: absolute;
+	position: fixed;
+	bottom: 0;
 	transform: scale(var(--birb-scale)) !important;
 	transform-origin: bottom;
 	z-index: 2147483638 !important;
 	cursor: pointer;
 }
 
+.birb-absolute {
+	position: absolute !important;
+}
+
 .birb-decoration {
 	image-rendering: pixelated;
 	position: fixed;
@@ -236,8 +241,8 @@
 	flex-direction: row;
 	padding-top: 4px;
 	padding-bottom: 4px;
-	padding-left: 15px;
+	padding-left: 10px;
-	padding-right: 15px;
+	padding-right: 10px;
 	box-sizing: border-box;
 }
 
@@ -284,12 +289,12 @@
 }
 
 .birb-field-guide-description {
-	width: calc(100% - 16px);
+	width: calc(100% - 20px);
-	margin-top: 10px;
+	margin-top: 5px;
 	padding: 8px;
 	padding-top: 4px;
 	padding-bottom: 4px;
-	margin-bottom: 6px;
+	margin-bottom: 10px;
 	font-size: 14px;
 	box-sizing: border-box;
 	color: rgb(124, 108, 75);