Allow bird to follow sticky notes

dist/birb.js

@@ -1482,7 +1482,7 @@
 
 	// Focus element constraints
 	const MIN_FOCUS_ELEMENT_WIDTH = 100;
-	const MIN_FOCUS_ELEMENT_TOP = 80;
+	const MIN_FOCUS_ELEMENT_TOP = 40;
 
 	/** @type {Partial<Settings>} */
 	let userSettings = {};
@@ -1606,7 +1606,7 @@
 				insertModal(`${birdBirb()} Mode`, message);
 			}),
 			new Separator(),
-			new MenuItem("2025.10.26.568", () => { alert("Thank you for using Pocket Bird! You are on version: 2025.10.26.568"); }, false),
+			new MenuItem("2025.10.28.45", () => { alert("Thank you for using Pocket Bird! You are on version: 2025.10.28.45"); }, false),
 		];
 
 		const styleElement = document.createElement("style");
@@ -1853,6 +1853,8 @@
 			}, URL_CHECK_INTERVAL);
 
 			setInterval(update, UPDATE_INTERVAL);
+
+			focusOnElement(true);
 		}
 
 		function update() {
@@ -1906,7 +1908,7 @@
 			// Update the bird's position
 			if (currentState === States.IDLE) {
 				if (focusedElement && !isWithinHorizontalBounds()) {
-					focusOnGround();
+					flySomewhere();
 				}
 				birdY = getFocusedY();
 			} else if (currentState === States.FLYING) {
@@ -1921,8 +1923,8 @@
 			// 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
+				// Fly to another element or the ground if the focused element moves out of bounds
-				focusOnGround();
+				flySomewhere();
 			}
 
 			if (birb.draw(SPECIES[currentSpecies])) {
@@ -2253,15 +2255,34 @@
 			return document.documentElement.clientHeight;
 		}
 
+		/**
+		 * Fly to either an element or the ground
+		 */
+		function flySomewhere() {
+			// On mobile, always prefer to focus on an element
+			// If not mobile, 50% chance to focus on ground
+			// if ((!isMobile() && coinFlip()) || !focusOnElement()) {
+			// 	focusOnGround();
+			// }
+			if (!focusOnElement()) {
+				focusOnGround();
+			}
+		}
+
 		function focusOnGround() {
 			focusedElement = null;
 			focusedBounds = { left: 0, right: window.innerWidth, top: getSafeWindowHeight() };
 			flyTo(Math.random() * window.innerWidth, 0);
 		}
 
-		function focusOnElement() {
+		/**
+		 * Focus on an element within the viewport
+		 * @param {boolean} [teleport] Whether to teleport to the element instead of flying
+		 * @returns Whether an element to focus on was found
+		 */
+		function focusOnElement(teleport = false) {
 			if (frozen) {
-				return;
+				return false;
 			}
 			const elements = document.querySelectorAll("img, video, .birb-sticky-note");
 			const inWindow = Array.from(elements).filter((img) => {
@@ -2271,20 +2292,35 @@
 			/** @type {HTMLElement[]} */
 			// @ts-expect-error
 			const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_FOCUS_ELEMENT_WIDTH);
-			if (largeElements.length === 0) {
-				return;
-			}
 			// Ensure the bird doesn't land on fixed or sticky elements
 			const nonFixedElements = largeElements.filter((el) => {
 				const style = window.getComputedStyle(el);
 				return style.position !== "fixed" && style.position !== "sticky";
 			});
+			if (nonFixedElements.length === 0) {
+				return false;
+			}
 			const randomElement = nonFixedElements[Math.floor(Math.random() * nonFixedElements.length)];
 			focusedElement = randomElement;
 			log("Focusing on element: ", focusedElement);
 			updateFocusedElementBounds();
+			if (teleport) {
+				teleportTo(getFocusedElementRandomX(), getFocusedY());
+			} else {
 				flyTo(getFocusedElementRandomX(), getFocusedY());
 			}
+			return randomElement !== null;
+		}
+
+		/**
+		 * @param {number} x
+		 * @param {number} y
+		 */
+		function teleportTo(x, y) {
+			birdX = x;
+			birdY = y;
+			setState(States.IDLE);
+		}
 
 		function updateFocusedElementBounds() {
 			if (focusedElement === null) {
@@ -2294,7 +2330,23 @@
 			}
 			let { left, right, top } = focusedElement.getBoundingClientRect();
 			if (focusedElement.classList.contains("birb-sticky-note")) {
-				top -= 4 * UI_CSS_SCALE;
+				top -= 4.5 * UI_CSS_SCALE;
+				if (focusedBounds.left !== left) {
+					// Sticky note has moved
+					const oldWidth = focusedBounds.right - focusedBounds.left;
+					const newWidth = right - left;
+					if (oldWidth === newWidth) {
+						// Move bird along with note
+						if (currentState === States.IDLE) {
+							birdX += left - focusedBounds.left;
+						} else if (currentState === States.HOP) {
+							startX += left - focusedBounds.left;
+							startY += top - focusedBounds.top;
+							targetX += left - focusedBounds.left;
+							targetY += top - focusedBounds.top;
+						}
+					}
+				}
 			}
 			focusedBounds = { left, right, top };
 		}

dist/birb.user.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         Pocket Bird
 // @namespace    https://idreesinc.com
-// @version      2025.10.26.568
+// @version      2025.10.28.45
 // @description  birb
 // @author       Idrees
 // @downloadURL  https://github.com/IdreesInc/Pocket-Bird/raw/refs/heads/main/dist/birb.user.js
@@ -1496,7 +1496,7 @@
 
 	// Focus element constraints
 	const MIN_FOCUS_ELEMENT_WIDTH = 100;
-	const MIN_FOCUS_ELEMENT_TOP = 80;
+	const MIN_FOCUS_ELEMENT_TOP = 40;
 
 	/** @type {Partial<Settings>} */
 	let userSettings = {};
@@ -1620,7 +1620,7 @@
 				insertModal(`${birdBirb()} Mode`, message);
 			}),
 			new Separator(),
-			new MenuItem("2025.10.26.568", () => { alert("Thank you for using Pocket Bird! You are on version: 2025.10.26.568"); }, false),
+			new MenuItem("2025.10.28.45", () => { alert("Thank you for using Pocket Bird! You are on version: 2025.10.28.45"); }, false),
 		];
 
 		const styleElement = document.createElement("style");
@@ -1867,6 +1867,8 @@
 			}, URL_CHECK_INTERVAL);
 
 			setInterval(update, UPDATE_INTERVAL);
+
+			focusOnElement(true);
 		}
 
 		function update() {
@@ -1920,7 +1922,7 @@
 			// Update the bird's position
 			if (currentState === States.IDLE) {
 				if (focusedElement && !isWithinHorizontalBounds()) {
-					focusOnGround();
+					flySomewhere();
 				}
 				birdY = getFocusedY();
 			} else if (currentState === States.FLYING) {
@@ -1935,8 +1937,8 @@
 			// 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
+				// Fly to another element or the ground if the focused element moves out of bounds
-				focusOnGround();
+				flySomewhere();
 			}
 
 			if (birb.draw(SPECIES[currentSpecies])) {
@@ -2267,15 +2269,34 @@
 			return document.documentElement.clientHeight;
 		}
 
+		/**
+		 * Fly to either an element or the ground
+		 */
+		function flySomewhere() {
+			// On mobile, always prefer to focus on an element
+			// If not mobile, 50% chance to focus on ground
+			// if ((!isMobile() && coinFlip()) || !focusOnElement()) {
+			// 	focusOnGround();
+			// }
+			if (!focusOnElement()) {
+				focusOnGround();
+			}
+		}
+
 		function focusOnGround() {
 			focusedElement = null;
 			focusedBounds = { left: 0, right: window.innerWidth, top: getSafeWindowHeight() };
 			flyTo(Math.random() * window.innerWidth, 0);
 		}
 
-		function focusOnElement() {
+		/**
+		 * Focus on an element within the viewport
+		 * @param {boolean} [teleport] Whether to teleport to the element instead of flying
+		 * @returns Whether an element to focus on was found
+		 */
+		function focusOnElement(teleport = false) {
 			if (frozen) {
-				return;
+				return false;
 			}
 			const elements = document.querySelectorAll("img, video, .birb-sticky-note");
 			const inWindow = Array.from(elements).filter((img) => {
@@ -2285,20 +2306,35 @@
 			/** @type {HTMLElement[]} */
 			// @ts-expect-error
 			const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_FOCUS_ELEMENT_WIDTH);
-			if (largeElements.length === 0) {
-				return;
-			}
 			// Ensure the bird doesn't land on fixed or sticky elements
 			const nonFixedElements = largeElements.filter((el) => {
 				const style = window.getComputedStyle(el);
 				return style.position !== "fixed" && style.position !== "sticky";
 			});
+			if (nonFixedElements.length === 0) {
+				return false;
+			}
 			const randomElement = nonFixedElements[Math.floor(Math.random() * nonFixedElements.length)];
 			focusedElement = randomElement;
 			log("Focusing on element: ", focusedElement);
 			updateFocusedElementBounds();
+			if (teleport) {
+				teleportTo(getFocusedElementRandomX(), getFocusedY());
+			} else {
 				flyTo(getFocusedElementRandomX(), getFocusedY());
 			}
+			return randomElement !== null;
+		}
+
+		/**
+		 * @param {number} x
+		 * @param {number} y
+		 */
+		function teleportTo(x, y) {
+			birdX = x;
+			birdY = y;
+			setState(States.IDLE);
+		}
 
 		function updateFocusedElementBounds() {
 			if (focusedElement === null) {
@@ -2308,7 +2344,23 @@
 			}
 			let { left, right, top } = focusedElement.getBoundingClientRect();
 			if (focusedElement.classList.contains("birb-sticky-note")) {
-				top -= 4 * UI_CSS_SCALE;
+				top -= 4.5 * UI_CSS_SCALE;
+				if (focusedBounds.left !== left) {
+					// Sticky note has moved
+					const oldWidth = focusedBounds.right - focusedBounds.left;
+					const newWidth = right - left;
+					if (oldWidth === newWidth) {
+						// Move bird along with note
+						if (currentState === States.IDLE) {
+							birdX += left - focusedBounds.left;
+						} else if (currentState === States.HOP) {
+							startX += left - focusedBounds.left;
+							startY += top - focusedBounds.top;
+							targetX += left - focusedBounds.left;
+							targetY += top - focusedBounds.top;
+						}
+					}
+				}
 			}
 			focusedBounds = { left, right, top };
 		}

manifest.json

@@ -2,7 +2,7 @@
     "manifest_version": 3,
     "name": "Pocket Bird",
     "description": "It's a bird, in your browser. What more could you want?",
-    "version": "2025.10.26.568",
+    "version": "2025.10.28.45",
     "homepage_url": "https://idreesinc.com",
     "icons": {
         "48": "images/icons/transparent/48x48x1.png",

src/application.js

@@ -101,7 +101,7 @@ const PET_FEATHER_BOOST = 2;
 
 // Focus element constraints
 const MIN_FOCUS_ELEMENT_WIDTH = 100;
-const MIN_FOCUS_ELEMENT_TOP = 80;
+const MIN_FOCUS_ELEMENT_TOP = 40;
 
 /** @type {Partial<Settings>} */
 let userSettings = {};
@@ -472,6 +472,8 @@ Promise.all([
 		}, URL_CHECK_INTERVAL);
 
 		setInterval(update, UPDATE_INTERVAL);
+
+		focusOnElement(true);
 	}
 
 	function update() {
@@ -525,7 +527,7 @@ Promise.all([
 		// Update the bird's position
 		if (currentState === States.IDLE) {
 			if (focusedElement && !isWithinHorizontalBounds()) {
-				focusOnGround();
+				flySomewhere();
 			}
 			birdY = getFocusedY();
 		} else if (currentState === States.FLYING) {
@@ -540,8 +542,8 @@ Promise.all([
 		// 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
+			// Fly to another element or the ground if the focused element moves out of bounds
-			focusOnGround();
+			flySomewhere();
 		}
 
 		if (birb.draw(SPECIES[currentSpecies])) {
@@ -876,15 +878,34 @@ Promise.all([
 		return document.documentElement.clientHeight;
 	}
 
+	/**
+	 * Fly to either an element or the ground
+	 */
+	function flySomewhere() {
+		// On mobile, always prefer to focus on an element
+		// If not mobile, 50% chance to focus on ground
+		// if ((!isMobile() && coinFlip()) || !focusOnElement()) {
+		// 	focusOnGround();
+		// }
+		if (!focusOnElement()) {
+			focusOnGround();
+		}
+	}
+
 	function focusOnGround() {
 		focusedElement = null;
 		focusedBounds = { left: 0, right: window.innerWidth, top: getSafeWindowHeight() };
 		flyTo(Math.random() * window.innerWidth, 0);
 	}
 
-	function focusOnElement() {
+	/**
+	 * Focus on an element within the viewport
+	 * @param {boolean} [teleport] Whether to teleport to the element instead of flying
+	 * @returns Whether an element to focus on was found
+	 */
+	function focusOnElement(teleport = false) {
 		if (frozen) {
-			return;
+			return false;
 		}
 		const elements = document.querySelectorAll("img, video, .birb-sticky-note");
 		const inWindow = Array.from(elements).filter((img) => {
@@ -894,20 +915,35 @@ Promise.all([
 		/** @type {HTMLElement[]} */
 		// @ts-expect-error
 		const largeElements = Array.from(inWindow).filter((img) => img instanceof HTMLElement && img !== focusedElement && img.offsetWidth >= MIN_FOCUS_ELEMENT_WIDTH);
-		if (largeElements.length === 0) {
-			return;
-		}
 		// Ensure the bird doesn't land on fixed or sticky elements
 		const nonFixedElements = largeElements.filter((el) => {
 			const style = window.getComputedStyle(el);
 			return style.position !== "fixed" && style.position !== "sticky";
 		});
+		if (nonFixedElements.length === 0) {
+			return false;
+		}
 		const randomElement = nonFixedElements[Math.floor(Math.random() * nonFixedElements.length)];
 		focusedElement = randomElement;
 		log("Focusing on element: ", focusedElement);
 		updateFocusedElementBounds();
+		if (teleport) {
+			teleportTo(getFocusedElementRandomX(), getFocusedY());
+		} else {
 			flyTo(getFocusedElementRandomX(), getFocusedY());
 		}
+		return randomElement !== null;
+	}
+
+	/**
+	 * @param {number} x
+	 * @param {number} y
+	 */
+	function teleportTo(x, y) {
+		birdX = x;
+		birdY = y;
+		setState(States.IDLE);
+	}
 
 	function updateFocusedElementBounds() {
 		if (focusedElement === null) {
@@ -917,7 +953,23 @@ Promise.all([
 		}
 		let { left, right, top } = focusedElement.getBoundingClientRect();
 		if (focusedElement.classList.contains("birb-sticky-note")) {
-			top -= 4 * UI_CSS_SCALE;
+			top -= 4.5 * UI_CSS_SCALE;
+			if (focusedBounds.left !== left) {
+				// Sticky note has moved
+				const oldWidth = focusedBounds.right - focusedBounds.left;
+				const newWidth = right - left;
+				if (oldWidth === newWidth) {
+					// Move bird along with note
+					if (currentState === States.IDLE) {
+						birdX += left - focusedBounds.left;
+					} else if (currentState === States.HOP) {
+						startX += left - focusedBounds.left;
+						startY += top - focusedBounds.top;
+						targetX += left - focusedBounds.left;
+						targetY += top - focusedBounds.top;
+					}
+				}
+			}
 		}
 		focusedBounds = { left, right, top };
 	}
@@ -983,6 +1035,10 @@ Promise.all([
 		birb.setY(birdY);
 	}
 
+	function coinFlip() {
+		return Math.random() < 0.5;
+	}
+
 	// Helper functions
 
 	/**