guess.js (d6d85bd) - functle · DKL9 GitList

Fix 65fef35

dkl9 commited d6d85bd at 2025-209 19:24:00

guess.js

Blame History Raw

const allowed = {
    terminals: ["x", "2", "1"],
    unary: ["^2", "^3", "sin", "exp", "ln"],
    binary: ["+", "-", "*", "/"]
};
const allTokens = [...allowed.terminals, ...allowed.unary, ...allowed.binary];
const tl = 5;
let target;
let puzzleNum;
const host = window.location.hostname;
switch (host) {
    case "dkl9.net":
    case "www.dkl9.net":
        (async () => {
            const r = await fetch(`https://${host}/cgi-bin/fps_curr`, { redirect: "follow" });
            puzzleNum = parseInt(r.url.match(/n=(\d+)/)[1]);
            target = (await r.text()).trim().split(" ");
            window.dispatchEvent(new Event("targetReady"));
            const score = localStorage.getItem("score").split("\n");
            if (playedToday(score)) {
                const [g, m] = score[0].split(" ")[2].split("/");
                const note = elemText(`You already played today and `);
                note.textContent += (g <= m) ? `got it in ${g} guess${g == 1 ? "" : "es"}` : `didn't figure it out`;
                note.textContent += ". Come back tomorrow. Full score on clipboard.";
                container.prepend(note);
                navigator.clipboard.writeText(score.join("\n"));
            }
        })();
        break;
    default:
        target = generateExpr();
        puzzleNum = 0;
        window.dispatchEvent(new Event("targetReady"));
}
const container = document.getElementsByClassName("container")[0];
const message = document.getElementById("message");
const boxes = {grey: "⬜️", yellow: "🟨", green: "🟩"};
const congrats = ["Incredible", "Amazing", "Great", "Nice", "You got it", "Whew"];
const gotitButton = document.getElementById("gotit");

if (localStorage.getItem("gotit") === "true") hideInstructions(gotitButton);

if (gotitButton) {
    gotitButton.addEventListener("click", e => {
        if (localStorage.getItem("gotit") !== "true") {
            hideInstructions(e.target);
            localStorage.setItem("gotit", "true");
        }
    });
}

function playedToday(s) {
    if (puzzleNum == 0)
        return false;
    if (!s)
        s = (localStorage.getItem("score") || "").split("\n");
    return s[0] && s[0].split(" ")[1] == puzzleNum;
}

function elemText(s, e = "p") {
    const d = document.createElement(e);
    d.textContent = s;
    return d;
}

function submitGuess() {
    const row = grid.rows[currentRow];
    message.textContent = "";
    if (currentInput.length !== tl) {
        message.textContent = `Use exactly ${tl} tokens.`;
        shakeRow(row);
        return;
    }
    for (const t of currentInput) {
        if (!allTokens.includes(t)) {
            message.textContent = "Invalid token: " + t;
            shakeRow(row);
            return;
        }
    }
    let ys;
    try {
        ys = xs.map(x => evalPostfix(currentInput, x));
    } catch (e) {
        message.textContent = "Syntax error.";
        shakeRow(row);
        return;
    }
    guessYsList.push(ys);
    redrawAll();
    const close = closeEnough(ys, targetYs);
    animateFlip(currentInput, close);
    if (close) {
        setTimeout(() => {
            fillRow(currentInput, "green");
            if (!playedToday())
                winMessage();
        }, 300 * tl);
        return;
    }
    currentRow++;
    if (currentRow >= maxGuesses && !playedToday()) loseMessage();
    currentInput = [];
}

function animateFlip(tokens, close) {
    const row = grid.rows[currentRow];
    const colors = Array(tl);
    if (close) {
        colors.fill("green");
    } else {
        const freq = {};
        for (const t of target) freq[t] = (freq[t] || 0) + 1;
        colors.fill("grey");
        for (let i = 0; i < tl; i++) {
            if (tokens[i] === target[i]) {
                colors[i] = "green";
                freq[tokens[i]]--;
            }
        }
        for (let i = 0; i < tl; i++) {
            if (colors[i] === "grey" && freq[tokens[i]] > 0) {
                colors[i] = "yellow";
                freq[tokens[i]]--;
            }
        }
    }
    tokens.forEach((token, i) => {
        const cell = row.cells[i];
        setTimeout(() => {
            cell.style.transform = "rotateX(90deg)";
            setTimeout(() => {
                cell.classList.add(colors[i]);
                cell.style.transform = "rotateX(0deg)";
            }, 150);
        }, 150 * i);
    });
}

function fillRow(tokens, cls) {
    const row = grid.rows[currentRow];
    for (let i = 0; i < tl; i++) {
        const cell = row.cells[i];
        cell.textContent = tokens[i];
        cell.classList.add(cls);
    }
}

function evalPostfix(tokens, x) {
    const s = [];
    for (const t of tokens) {
        if (t === "x") s.push(x);
        else if (t === "1") s.push(1);
        else if (t === "2") s.push(2);
        else if (allowed.unary.includes(t)) {
            if (s.length < 1) throw 0;
            const v = s.pop();
            if (t === "^2") s.push(v ** 2);
            if (t === "^3") s.push(v ** 3);
            if (t === "sin") s.push(Math.sin(v));
            if (t === "exp") s.push(Math.exp(v));
            if (t === "ln") s.push(Math.log(v));
        } else if (allowed.binary.includes(t)) {
            if (s.length < 2) throw 0;
            const b = s.pop(), a = s.pop();
            if (t === "+") s.push(a + b);
            if (t === "-") s.push(a - b);
            if (t === "*") s.push(a * b);
            if (t === "/") s.push(a / b);
        } else throw 0;
    }
    if (s.length !== 1) throw 0;
    return s[0];
}

function rand(l) {
    return l[Math.floor(l.length * Math.random())];
}

function generateExpr(len = tl, force = true) {
    if (len == 1) {
        return force ? ["x"] : [rand(allowed.terminals)];
    } else if (len == 2 || Math.random() >= 0.5) {
        const e = generateExpr(len - 1, force);
        e.push(rand(evalPostfix(e, 0.6) == 1 ? ["sin", "exp"] : allowed.unary));
        return e;
    } else {
        const k = Math.floor(1 + (len - 2) * Math.random());
        const f = force && Math.random() > 0.5;
        const a = generateExpr(k, f);
        const b = generateExpr(len - 1 - k, force && !f);
        const one = evalPostfix(a, 0.6) == 1 || evalPostfix(b, 0.6) == 1;
        const e = a.concat(b)
        e.push(rand(one ? ["+", "-"] : allowed.binary));
        return e;
    }
}

function closeEnough(a, b) {
    for (let i = 0; i < a.length; i++) {
        if (isNaN(a[i]) && !isNaN(b[i])) return false;
        if (Math.abs(a[i] - b[i]) > 0.1 * (Math.abs(b[i]) + 1)) return false;
    }
    return true;
}

function hideInstructions(button) {
    const inst = document.getElementById("instructions");
    inst.remove();
    button.remove();
    const heading = inst.firstElementChild;
    heading.remove();
    const summary = elemText(heading.textContent, "summary");
    const newInst = document.createElement("details");
    newInst.append(summary);
    for (const c of inst.childNodes) newInst.append(c);
    container.append(newInst);
}

function infix(expr) {
    const stack = [];
    for (const token of expr) {
        if (token === '+' || token === '-') {
            const b = stack.pop();
            const a = stack.pop();
            stack.push(`(${a} ${token} ${b})`);
        } else if (token === '*' || token === '/') {
            const b = stack.pop();
            const a = stack.pop();
            stack.push(`${a} ${token} ${b}`);
        } else if (token === 'sin' || token === 'exp' || token === 'ln') {
            const a = stack.pop();
            stack.push(`${token}(${a})`);
        } else if (token === '^2' || token === '^3') {
            const a = stack.pop();
            stack.push(`(${a})${token}`);
        } else {
            stack.push(token);
        }
    }
    return stack[0];
}

function humane(f = target) {
    return `${infix(f)} (input as ${f.join(" ")})`;
}

function winMessage() {
    let boast = `Functle ${puzzleNum} ${currentRow + 1}/${maxGuesses}\n`;
    for (i = 0; i <= currentRow; i++) {
        const r = grid.rows[i];
        for (const c of r.cells) {
            const l = c.classList;
            let p = "?";
            for (o in boxes) if (l.contains(o)) p = boxes[o];
            boast += p;
        }
        boast = boast + "\n";
    }
    boast += "https://DKL9.net/functle/";
    localStorage.setItem("score", boast);
    navigator.clipboard.writeText(boast);
    const w = elemText(`${congrats[currentRow]}! The function was ${humane()}. Share your score. It's on your clipboard. `, "section");
    const b = elemText("Copy again", "button");
    b.type = "button";
    b.addEventListener("click", () => navigator.clipboard.writeText(boast));
    w.append(b);
    w.append(" Come back tomorrow for the next function.");
    container.prepend(w);
}

function loseMessage() {
    localStorage.setItem("score", `Functle ${puzzleNum} ${maxGuesses + 1}/${maxGuesses}`);
    container.prepend(elemText(`Better luck next time. The function was ${humane()}`));
}