Motion Blur Thingy

Ehh kinda works but not REAL Motion Blur...
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// ==UserScript==
// @name         Motion Blur Thingy
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Ehh kinda works but not REAL Motion Blur...
// @author       Ankit
// @match        https://bloxd.io/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
    let lastHeading = null;
    let lastPitch = null;
    let currentBlur = 0;

    const MAX_BLUR = 6;
    const MULTIPLIER = 12;
    const SMOOTHING = 0.15;
    const THRESHOLD = 0.0005;

    function findNoa() {
        const isNoa = o =>
        o && typeof o === "object" &&
              o.entities?.getState &&
              o.camera?.getDirection &&
              o.world?.getBlock;

        const isEntityMgr = o =>
        o && typeof o === "object" &&
              o.entities?.getState;

        function scan(obj, check, seen = new Set()) {
            if (!obj || typeof obj !== "object" || seen.has(obj)) return null;
            seen.add(obj);

            try {
                if (check(obj)) return obj;
                for (const v of Object.values(obj)) {
                    const hit = scan(v, check, seen);
                    if (hit) return hit;
                }
            } catch {}
            return null;
        }

        function walk(fiber) {
            let n = fiber, i = 0;
            while (n && i++ < 40) {
                if (n.memoizedProps) {
                    const r =
                          scan(n.memoizedProps, isNoa) ||
                          scan(n.memoizedProps, isEntityMgr);
                    if (r) return r;
                }
                if (n.memoizedState) {
                    const r =
                          scan(n.memoizedState, isNoa) ||
                          scan(n.memoizedState, isEntityMgr);
                    if (r) return r;
                }
                n = n.return;
            }
            return null;
        }

        for (const el of document.querySelectorAll("*")) {
            const k = Object.keys(el).find(x => x.startsWith("__reactFiber$"));
            if (!k) continue;
            const r = walk(el[k]);
            if (r) return r;
        }

        return null;
    }

    function logNoa() {
        const InGame = document.querySelector(".HotBarContainer");

        if (InGame && !window.__noa) {
            window.__noa = findNoa();
        }
    }

    function normalizeAngle(delta) {
        if (delta > Math.PI) delta -= Math.PI * 2;
        if (delta < -Math.PI) delta += Math.PI * 2;
        return delta;
    }

    function motionBlurLoop() {
        const container = document.querySelector("#noa-container");
        if (!container || !window.__noa) {
            requestAnimationFrame(motionBlurLoop);
            return;
        }

        const cam = window.__noa.camera;

        const heading = cam.heading;
        const pitch = cam.pitch;

        if (lastHeading !== null) {
            let deltaYaw = normalizeAngle(heading - lastHeading);
            let deltaPitch = pitch - lastPitch;

            let velocity = Math.sqrt(deltaYaw * deltaYaw + deltaPitch * deltaPitch);

            let targetBlur = velocity > THRESHOLD
            ? Math.min(velocity * MULTIPLIER, MAX_BLUR)
            : 0;

            // Smooth interpolation
            currentBlur += (targetBlur - currentBlur) * SMOOTHING;

            container.style.filter =
                currentBlur > 0.01
                ? `blur(${currentBlur}px) brightness(1.03)`
            : "none";
        }

        lastHeading = heading;
        lastPitch = pitch;

        requestAnimationFrame(motionBlurLoop);
    }

    requestAnimationFrame(motionBlurLoop);
    requestAnimationFrame(logNoa);
})();