422 lines
12 KiB
JavaScript
422 lines
12 KiB
JavaScript
// oneko.js: https://github.com/adryd325/oneko.js
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(function oneko() {
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const isReducedMotion =
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window.matchMedia(`(prefers-reduced-motion: reduce)`) === true ||
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window.matchMedia(`(prefers-reduced-motion: reduce)`).matches === true;
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if (isReducedMotion) return;
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const nekoEl = document.createElement("div");
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let persistPosition = true;
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let nekoPosX = 32;
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let nekoPosY = 32;
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let mousePosX = 0;
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let mousePosY = 0;
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let frameCount = 0;
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let idleTime = 0;
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let idleAnimation = null;
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let idleAnimationFrame = 0;
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const nekoSpeed = 10;
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const spriteSets = {
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idle: [[-3, -3]],
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alert: [[-7, -3]],
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scratchSelf: [
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[-5, 0],
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[-6, 0],
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[-7, 0],
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],
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scratchWallN: [
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[0, 0],
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[0, -1],
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],
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scratchWallS: [
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[-7, -1],
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[-6, -2],
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],
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scratchWallE: [
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[-2, -2],
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[-2, -3],
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],
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scratchWallW: [
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[-4, 0],
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[-4, -1],
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],
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tired: [[-3, -2]],
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sleeping: [
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[-2, 0],
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[-2, -1],
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],
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N: [
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[-1, -2],
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[-1, -3],
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],
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NE: [
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[0, -2],
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[0, -3],
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],
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E: [
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[-3, 0],
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[-3, -1],
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],
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SE: [
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[-5, -1],
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[-5, -2],
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],
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S: [
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[-6, -3],
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[-7, -2],
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],
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SW: [
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[-5, -3],
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[-6, -1],
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],
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W: [
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[-4, -2],
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[-4, -3],
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],
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NW: [
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[-1, 0],
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[-1, -1],
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],
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};
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function init() {
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let nekoFile = "./oneko.gif"
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const curScript = document.currentScript
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if (curScript && curScript.dataset.cat) {
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nekoFile = curScript.dataset.cat
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}
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if (curScript && curScript.dataset.persistPosition) {
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if (curScript.dataset.persistPosition === "") {
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persistPosition = true;
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} else {
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persistPosition = JSON.parse(curScript.dataset.persistPosition.toLowerCase());
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}
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}
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if (persistPosition) {
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let storedNeko = JSON.parse(window.localStorage.getItem("oneko"));
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if (storedNeko !== null) {
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nekoPosX = storedNeko.nekoPosX;
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nekoPosY = storedNeko.nekoPosY;
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mousePosX = storedNeko.mousePosX;
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mousePosY = storedNeko.mousePosY;
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frameCount = storedNeko.frameCount;
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idleTime = storedNeko.idleTime;
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idleAnimation = storedNeko.idleAnimation;
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idleAnimationFrame = storedNeko.idleAnimationFrame;
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nekoEl.style.backgroundPosition = storedNeko.bgPos;
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}
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}
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nekoEl.id = "oneko";
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nekoEl.ariaHidden = true;
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nekoEl.style.width = "32px";
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nekoEl.style.height = "32px";
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nekoEl.style.position = "fixed";
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nekoEl.style.pointerEvents = "none";
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nekoEl.style.imageRendering = "pixelated";
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nekoEl.style.left = `${nekoPosX - 16}px`;
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nekoEl.style.top = `${nekoPosY - 16}px`;
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nekoEl.style.zIndex = 2147483647;
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nekoEl.style.backgroundImage = `url(${nekoFile})`;
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document.body.appendChild(nekoEl);
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document.addEventListener("mousemove", function (event) {
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mousePosX = event.clientX;
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mousePosY = event.clientY;
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});
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if (persistPosition) {
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window.addEventListener("beforeunload", function (event) {
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window.localStorage.setItem("oneko", JSON.stringify({
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nekoPosX: nekoPosX,
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nekoPosY: nekoPosY,
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mousePosX: mousePosX,
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mousePosY: mousePosY,
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frameCount: frameCount,
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idleTime: idleTime,
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idleAnimation: idleAnimation,
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idleAnimationFrame: idleAnimationFrame,
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bgPos: nekoEl.style.backgroundPosition
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}));
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});
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}
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window.requestAnimationFrame(onAnimationFrame);
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}
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let lastFrameTimestamp;
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function onAnimationFrame(timestamp) {
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// Stops execution if the neko element is removed from DOM
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if (!nekoEl.isConnected) {
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return;
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}
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if (!lastFrameTimestamp) {
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lastFrameTimestamp = timestamp;
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}
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if (timestamp - lastFrameTimestamp > 100) {
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lastFrameTimestamp = timestamp;
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frame();
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}
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window.requestAnimationFrame(onAnimationFrame);
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}
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function setSprite(name, frame) {
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const sprite = spriteSets[name][frame % spriteSets[name].length];
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nekoEl.style.backgroundPosition = `${sprite[0] * 32}px ${sprite[1] * 32}px`;
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}
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function resetIdleAnimation() {
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idleAnimation = null;
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idleAnimationFrame = 0;
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}
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function idle() {
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idleTime += 1;
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// every ~ 20 seconds
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if (
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idleTime > 10 &&
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Math.floor(Math.random() * 200) == 0 &&
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idleAnimation == null
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) {
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let avalibleIdleAnimations = ["sleeping", "scratchSelf"];
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if (nekoPosX < 32) {
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avalibleIdleAnimations.push("scratchWallW");
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}
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if (nekoPosY < 32) {
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avalibleIdleAnimations.push("scratchWallN");
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}
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if (nekoPosX > window.innerWidth - 32) {
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avalibleIdleAnimations.push("scratchWallE");
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}
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if (nekoPosY > window.innerHeight - 32) {
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avalibleIdleAnimations.push("scratchWallS");
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}
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idleAnimation =
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avalibleIdleAnimations[
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Math.floor(Math.random() * avalibleIdleAnimations.length)
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];
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}
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switch (idleAnimation) {
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case "sleeping":
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if (idleAnimationFrame < 8) {
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setSprite("tired", 0);
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break;
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}
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setSprite("sleeping", Math.floor(idleAnimationFrame / 4));
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if (idleAnimationFrame > 192) {
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resetIdleAnimation();
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}
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break;
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case "scratchWallN":
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case "scratchWallS":
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case "scratchWallE":
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case "scratchWallW":
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case "scratchSelf":
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setSprite(idleAnimation, idleAnimationFrame);
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if (idleAnimationFrame > 9) {
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resetIdleAnimation();
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}
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break;
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default:
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setSprite("idle", 0);
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return;
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}
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idleAnimationFrame += 1;
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}
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function frame() {
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frameCount += 1;
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const diffX = nekoPosX - mousePosX;
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const diffY = nekoPosY - mousePosY;
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const distance = Math.sqrt(diffX ** 2 + diffY ** 2);
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if (distance < nekoSpeed || distance < 48) {
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idle();
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return;
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}
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idleAnimation = null;
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idleAnimationFrame = 0;
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if (idleTime > 1) {
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setSprite("alert", 0);
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// count down after being alerted before moving
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idleTime = Math.min(idleTime, 7);
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idleTime -= 1;
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return;
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}
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let direction;
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direction = diffY / distance > 0.5 ? "N" : "";
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direction += diffY / distance < -0.5 ? "S" : "";
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direction += diffX / distance > 0.5 ? "W" : "";
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direction += diffX / distance < -0.5 ? "E" : "";
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setSprite(direction, frameCount);
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nekoPosX -= (diffX / distance) * nekoSpeed;
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nekoPosY -= (diffY / distance) * nekoSpeed;
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nekoPosX = Math.min(Math.max(16, nekoPosX), window.innerWidth - 16);
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nekoPosY = Math.min(Math.max(16, nekoPosY), window.innerHeight - 16);
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nekoEl.style.left = `${nekoPosX - 16}px`;
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nekoEl.style.top = `${nekoPosY - 16}px`;
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}
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init();
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})();
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/* ============================================================
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Secret cat modes — click the cat to cycle/unlock looks,
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press C to open the picker. (merged from cat-modes.js)
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============================================================ */
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const CAT_MODES = [
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{ name: "Classic", filter: "none" },
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{ name: "Shadow Cat", filter: "invert(1) drop-shadow(0 0 3px #cba6f7)" },
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{ name: "Ghost Cat", filter: "grayscale(1) brightness(1.7) opacity(0.55) drop-shadow(0 0 4px #89dceb)" },
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{ name: "CRT Cat", filter: "invert(48%) sepia(80%) saturate(2000%) hue-rotate(85deg) brightness(0.9) contrast(1.2)" },
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{ name: "Vaporwave Cat", filter: "invert(60%) sepia(90%) saturate(3000%) hue-rotate(280deg) brightness(0.95)" },
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{ name: "Gold Cat", filter: "invert(75%) sepia(85%) saturate(1400%) hue-rotate(8deg) brightness(1.0)" },
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{ name: "Sapphire Cat", filter: "invert(45%) sepia(90%) saturate(2500%) hue-rotate(200deg) brightness(1.0)" },
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{ name: "Dusty Cat", filter: "invert(60%)" },
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];
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const UNLOCK_EVERY = 5; // clicks needed to unlock each new mode
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const SPRITE = "/images/misc/oneko.gif";
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const IDLE_POS = "-96px -96px"; // idle frame of the sprite sheet
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(function catModes() {
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const oneko = document.getElementById("oneko");
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if (!oneko) return;
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oneko.style.pointerEvents = "auto";
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oneko.style.cursor = "pointer";
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const ls = window.localStorage;
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let clicks = parseInt(ls.getItem("onekoClicks") || "0", 10);
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let mode = parseInt(ls.getItem("onekoMode") || "0", 10);
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const unlockedCount = () =>
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Math.min(CAT_MODES.length, 1 + Math.floor(clicks / UNLOCK_EVERY));
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const isUnlocked = (i) => i < unlockedCount();
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const apply = (i) => (oneko.style.filter = CAT_MODES[i].filter);
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/* ---------- picker overlay (no visible trigger — press C to find it) ---------- */
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const overlay = document.createElement("div");
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overlay.className = "cat-picker";
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overlay.hidden = true;
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overlay.innerHTML = `
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<div class="cat-picker-panel" role="dialog" aria-label="Choose a cat">
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<div class="cat-picker-head">
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<span>Cat collection</span>
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<button class="cat-picker-close" type="button" aria-label="Close">×</button>
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</div>
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<div class="cat-grid"></div>
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<p class="cat-hint">Some cats are still hidden… · press C to toggle</p>
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</div>`;
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document.body.appendChild(overlay);
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const grid = overlay.querySelector(".cat-grid");
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function renderGrid() {
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grid.innerHTML = "";
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CAT_MODES.forEach((c, i) => {
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const unlocked = isUnlocked(i);
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const opt = document.createElement(unlocked ? "button" : "div");
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opt.className =
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"cat-option" + (unlocked ? "" : " locked") + (i === mode ? " current" : "");
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if (unlocked) opt.type = "button";
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const previewFilter = unlocked ? c.filter : "brightness(0) opacity(0.3)";
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opt.innerHTML = `
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<span class="cat-preview" style="background-image:url('${SPRITE}');background-position:${IDLE_POS};filter:${previewFilter}"></span>
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<span class="cat-name">${unlocked ? c.name : "???"}</span>`;
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if (unlocked) opt.addEventListener("click", () => selectMode(i));
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grid.appendChild(opt);
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});
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}
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function selectMode(i) {
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mode = i;
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ls.setItem("onekoMode", String(i));
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apply(i);
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renderGrid();
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}
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const openPicker = () => {
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renderGrid();
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overlay.hidden = false;
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};
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const closePicker = () => (overlay.hidden = true);
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const togglePicker = () => (overlay.hidden ? openPicker() : closePicker());
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overlay
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.querySelector(".cat-picker-close")
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.addEventListener("click", closePicker);
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overlay.addEventListener("click", (e) => {
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if (e.target === overlay) closePicker();
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});
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document.addEventListener("keydown", (e) => {
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// ignore while typing in a field or with modifier keys held
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const typing = /^(INPUT|TEXTAREA|SELECT)$/.test(document.activeElement?.tagName || "");
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if (e.key === "Escape" && !overlay.hidden) {
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closePicker();
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} else if (
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(e.key === "c" || e.key === "C") &&
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!e.ctrlKey && !e.metaKey && !e.altKey && !typing
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) {
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togglePicker();
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}
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});
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/* ---------- toast ---------- */
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let toastEl, toastTimer;
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function toast(msg) {
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if (!toastEl) {
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toastEl = document.createElement("div");
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toastEl.className = "cat-toast";
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document.body.appendChild(toastEl);
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}
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toastEl.textContent = msg;
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toastEl.classList.remove("show");
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void toastEl.offsetWidth;
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toastEl.classList.add("show");
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clearTimeout(toastTimer);
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toastTimer = setTimeout(() => toastEl.classList.remove("show"), 1700);
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}
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/* ---------- init + cat click ---------- */
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mode = Math.max(0, Math.min(mode, unlockedCount() - 1));
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apply(mode);
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oneko.addEventListener("click", (e) => {
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e.preventDefault();
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e.stopPropagation();
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const before = unlockedCount();
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clicks += 1;
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ls.setItem("onekoClicks", String(clicks));
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const after = unlockedCount();
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if (after > before) {
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mode = after - 1;
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toast(`✨ Unlocked: ${CAT_MODES[mode].name}!`);
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} else {
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mode = (mode + 1) % after;
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toast(CAT_MODES[mode].name);
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}
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ls.setItem("onekoMode", String(mode));
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apply(mode);
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if (!overlay.hidden) renderGrid();
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});
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})();
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