Hello everyone,
I hope you’re all doing well. I’m reaching out to this wonderful community because I’m currently working on integrating gamepad functionality into my Anki study routine and could really use your expertise.
What I’m trying to achieve: I want to use my 8BitDo Zero 2 wireless controller to navigate through answer options on my Anki cards. Specifically, I’d like to map the controller buttons to select different answer choices instead of using mouse clicks or keyboard shortcuts.
Current situation: I’m not entirely sure where to start with this integration. I assume this would involve some custom JavaScript or possibly an add-on, but I’m uncertain about the best approach to detect gamepad input and map it to Anki’s card interface for answer selection.
What I’m looking for:
- Guidance on how to implement gamepad support for answer selection on cards
- Any existing add-ons or scripts that might help with controller integration
- Technical advice on the best way to capture gamepad input in Anki’s environment
- Any resources or documentation that might point me in the right direction
I would be incredibly grateful for any help, suggestions, or even just pointing me toward relevant resources. This community has always been so supportive and knowledgeable, and I truly appreciate any time you can spare to help with this project.
Here is my code ( feel free to use it ):
<!-- Front Side Template -->
<div class="card-content front mch" theme="{{Theme}}">
<div class="card-header">
<div class="card-id">
<span class="id-label">ID:</span>
<span class="id-value">{{ID}}</span>
<button onclick="copyToClipboard(this);" class="copy-button" title="Copy ID">📋</button>
</div>
<div class="card-tag">
<span class="tag-label">TAG:</span>
<span class="tag-value">{{#Tag}}
<span>{{Tag}}</span>
{{/Tag}}</span>
</div>
</div>
<!-- Difficulty indicator -->
<div class="difficulty-indicator">
<span class="difficulty-label">Độ khó:</span>
<span class="difficulty-value">{{Difficulty}}</span>
</div>
<div class="question-header">
<h2>{{Question}}</h2>
</div>
<!-- Image Section (if provided) -->
{{#Image}}
<div class="question-image-section">
<div class="question-image-container">
<div class="question-image">{{Image}}</div>
</div>
</div>
{{/Image}}
<div id="scr-keyboard" class="vertical-choices">
<!-- Buttons will be dynamically generated -->
</div>
<!-- Hidden hint field -->
<div id="hint" class="sys">{{Hint}}</div>
<div class="copyright-kero">Data Analyst Pro</div>
</div>
<!-- Hidden div for correct answer -->
<div id="correctAnswer" class="sys">{{Answer}}</div>
<!-- Hidden div for choices -->
<div id="choices-data" class="sys">{{Choices}}</div>
<script>
// Determine card side
wrap = document.getElementById('backwrap');
isFrontSide = !wrap;
// Determine input flags
isMCh = !!document.querySelector('.card-content.mch');
isMathJax = !!document.querySelector('.card-content.eq');
// Determine platform
platform = '';
if (!document.documentElement.classList.contains("mobile")) {
platform = 'desk';
} else if (document.documentElement.classList.contains("android")) {
platform = 'android';
} else {
platform = 'ios';
}
// Elements
screenKeyboard = document.getElementById('scr-keyboard');
// Clipboard functionality
function copyToClipboard(button) {
// Get ID text
const idSpan = button.previousElementSibling;
const text = idSpan.textContent;
// Use Clipboard API if supported
if (navigator.clipboard && window.isSecureContext) {
navigator.clipboard.writeText(text)
.then(() => {
showCopySuccess(button);
})
.catch(err => {
console.error('Copy failed: ', err);
useAlternativeCopy(button, text);
});
} else {
// Fallback for browsers without Clipboard API
useAlternativeCopy(button, text);
}
}
function useAlternativeCopy(button, text) {
// Classic method
if (window.clipboardData) {
window.clipboardData.setData('Text', text);
showCopySuccess(button);
} else {
// Fallback for other browsers
const tempInput = document.createElement('textarea');
tempInput.value = text;
document.body.appendChild(tempInput);
tempInput.select();
try {
const success = document.execCommand('copy');
if (success) {
showCopySuccess(button);
}
} catch (err) {
console.error('execCommand Copy failed:', err);
}
document.body.removeChild(tempInput);
}
}
function showCopySuccess(button) {
// Save original text
const originalText = button.innerHTML;
// Change to checkmark
button.innerHTML = '✓';
button.style.color = 'var(--data-success)';
button.classList.add('copy-success');
// Revert back after 1 second
setTimeout(() => {
button.innerHTML = originalText;
button.style.color = ''; // Reset to default
button.classList.remove('copy-success');
}, 1000);
}
// Process tags for proper display
document.addEventListener('DOMContentLoaded', function() {
// Check if tag-value has span children
const tagValue = document.querySelector('.tag-value');
if (tagValue && !tagValue.querySelector('span')) {
// Auto process tags if no spans
const tags = tagValue.textContent.trim().split(/\s+/);
if (tags.length > 0 && tags[0]) {
tagValue.innerHTML = '';
tags.forEach(tag => {
if (tag) {
const span = document.createElement('span');
span.textContent = tag;
tagValue.appendChild(span);
}
});
}
}
// Add difficulty class based on value
const difficultyValue = document.querySelector('.difficulty-value');
if (difficultyValue) {
const difficulty = difficultyValue.textContent.trim().toLowerCase();
if (difficulty) {
difficultyValue.classList.add(`difficulty-${difficulty}`);
}
}
});
function htmlEscape(string) {
return string.replaceAll('&', '&').replaceAll('<', '<').replaceAll('>', '>').replaceAll("'", ''').replaceAll('"', '"');
}
function htmlUnEscape(string) {
return string.replaceAll('<', '<').replaceAll('>', '>').replaceAll(''', "'").replaceAll('"', '"').replaceAll('&', '&');
}
function ansCleanUp(ansString) {
return ansString?.replaceAll(" "," ")?.trim();
}
// Modified answer storage function - only saves plain text
function storeAnswer(ans = "") {
// Handle if input is HTML
if (ans.includes('<')) {
const tempDiv = document.createElement('div');
tempDiv.innerHTML = ans;
// Remove option number if present
const optionNumber = tempDiv.querySelector('.option-number');
if (optionNumber) {
optionNumber.remove();
}
ans = tempDiv.textContent.trim();
}
// Save answer as plain text
sessionStorage.setItem("userAnswer", ans);
}
if (isFrontSide) {
storeAnswer("");
}
// Determine the correct answer
corrAnsL = document.getElementById('correctAnswer');
corrAns = ansCleanUp(corrAnsL?.innerHTML) || ""; // Including alts
// Extract primary, excluding alts
try {
const tempL = document.createElement('div');
tempL.innerHTML = corrAns;
tempL.querySelectorAll('[part="alt"]').forEach((L) => {L.remove();});
corrAns = ansCleanUp(!isMCh ? tempL.innerText : tempL.innerHTML);
tempL.remove();
} catch (err) {}
inlnAlts = corrAns.split(/[;；]/).map(ansCleanUp);
hintAns = inlnAlts[0];
if (isMathJax) {
hintAns = MJunwrap(hintAns);
if (isMCh) {
inlnAlts = [];
}
}
// Determine alt answers
partAlts = [];
try {
const altsString = [...corrAnsL.querySelectorAll('[part="alt"]')].map(L => L.innerText).join('|');
partAlts = altsString ? altsString.split('|').map(ansCleanUp) : [];
} catch (err) {}
allAlts = [...inlnAlts, ...partAlts];
// Constants
keysString = document.getElementById('static_keys')?.innerText || "";
fillerString = document.getElementById('random_keys')?.innerText || "";
choices = document.getElementById('choices-data')?.innerHTML.split('|').map(ansCleanUp) || '';
// Keyboard navigation
tabSelected = null;
document.onkeyup = function (e) {
var ev = window.event || e;
if (ev.key === 'Tab') {
tabSelected = document.activeElement;
}
}
document.onkeydown = function (e) {
var ev = window.event || e;
if (ev.key === 'Enter' && (tabSelected !== document.activeElement || tabSelected?.id === 'typeans')) {
// Last action was NOT selecting element with Tab -> Enter=flip (prevent audio activation)
if (document.activeElement.matches('a.replay-button.soundLink')) {
document.activeElement.blur();
}
if (!isFrontSide) {
if (flipBtn && flipBtn.onclick) {
flipBtn.onclick();
}
} else {
flipToBack();
}
}
if (isFrontSide && "1234567890".includes(ev.key) && isMCh) {
let numkey = parseInt(ev.key);
if (numkey == 0) {numkey = 10};
const mchoiceButtons = screenKeyboard.querySelectorAll('.membtn:not(#HintButton)');
if (numkey <= mchoiceButtons.length) {
mchoiceButtons[numkey - 1].onclick();
}
}
}
function shuffle(arr) {
return arr.sort(() => 0.5 - Math.random());
}
// Enhanced hint system
function typeHint() {
// Create modal to display hint
const hintModal = document.createElement('div');
hintModal.classList.add('hint-overlay');
// Get data from hint field
const hint = document.getElementById('hint')?.textContent || "No hint available for this question.";
hintModal.innerHTML = `
<div class="hint-container">
<div class="hint-header">Hint</div>
<div class="hint-content">
<div class="hint-text">${hint}</div>
</div>
<button class="hint-close">Close</button>
</div>
`;
document.body.appendChild(hintModal);
// Handle modal close event
const closeButton = hintModal.querySelector('.hint-close');
closeButton.addEventListener('click', () => {
hintModal.remove();
});
// Handle click outside modal to close
hintModal.addEventListener('click', (e) => {
if (e.target === hintModal) {
hintModal.remove();
}
});
}
function flipToBack() {
if (!isFrontSide) return;
if (platform === 'desk') {
pycmd("ans");
} else if (platform === 'android') {
showAnswer();
}
console.log('flip');
}
// On-screen keyboard | multiple-choice buttons
if (screenKeyboard) {
if (isFrontSide) {
if (isMCh) {
// Multiple-choice keys using choices field
choices = choices.filter(choice => (choice !== corrAns && !!choice));
choices = shuffle([... new Set(choices)]);
choices.splice((window.mchOptionsN || 4) - 1); // Limit to 4 options by default
choices = [corrAns, ...choices];
shuffle(choices);
keysString = choices.join('|');
}
sessionStorage.setItem("card-keyboard", keysString);
} else {
keysString = sessionStorage.getItem("card-keyboard") || "";
}
if (isMCh) {
keys = keysString ? keysString.split('|') : [];
// Remove existing buttons (if any)
const existingButtons = screenKeyboard.querySelectorAll('.membtn:not(#HintButton)');
existingButtons.forEach(btn => btn.remove());
// Add hint button if not already present
let hintButton = screenKeyboard.querySelector('#HintButton');
if (!hintButton) {
hintButton = document.createElement('div');
hintButton.id = 'HintButton';
hintButton.className = 'membtn';
hintButton.innerHTML = `
<svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M12 22C17.5228 22 22 17.5228 22 12C22 6.47715 17.5228 2 12 2C6.47715 2 2 6.47715 2 12C2 17.5228 6.47715 22 12 22Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M12 17V17.01" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M12 13.5C11.9816 13.1587 12.0692 12.8195 12.25 12.5304C12.4308 12.2413 12.6968 12.0161 13.01 12.0161 12.0158 12.0161 12.0012C13.4172 11.7366 13.7784 11.4859 14.0633 11.1602C14.3482 10.8345 14.5483 10.4431 14.6444 10.0216C14.7405 9.6 14.7298 9.16103 14.6133 8.74451C14.4968 8.328 14.2777 7.94571 13.9763 7.63286C13.6749 7.32 13.3009 7.08684 12.8879 6.95189C12.4748 6.81694 12.0348 6.78439 11.6079 6.85756C11.181 6.93073 10.78 7.10681 10.4334 7.37159C10.0867 7.63636 9.80369 7.98249 9.60997 8.38" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
Hint
`;
screenKeyboard.appendChild(hintButton);
}
// Add choice buttons
keys.reverse().forEach((key) => {
const keyButton = document.createElement("div");
keyButton.innerHTML = key;
keyButton.classList.add('membtn');
if (key === corrAns || allAlts.includes(key)) {
keyButton.classList.add('correct');
} else if (isMathJax && MJwrap(key) === corrAns) {
keyButton.classList.add('correct');
}
// Insert before HintButton
screenKeyboard.insertBefore(keyButton, hintButton);
});
// Add option numbers to choices
const mchoiceButtons = screenKeyboard.querySelectorAll('.membtn:not(#HintButton)');
mchoiceButtons.forEach((btn, index) => {
const optionNumber = document.createElement('span');
optionNumber.className = 'option-number';
optionNumber.textContent = index + 1;
btn.prepend(optionNumber);
});
}
}
// Set up click events for buttons (FIXED)
if (isFrontSide) {
keyboardButtons = document.querySelectorAll('#scr-keyboard > *');
keyboardButtons.forEach(btn => {
if (btn.id === 'HintButton') {
btn.onclick = typeHint;
} else if (isMCh) {
btn.onclick = () => {
if (btn.classList.contains('pressed')) {
storeAnswer("");
btn.classList.remove('pressed');
} else {
// Extract plain text from selected button
const btnContent = btn.textContent.trim();
// Remove option number if present
const answerText = btnContent.replace(/^\d+\s*/, '').trim();
// Save plain text answer
storeAnswer(answerText);
keyboardButtons.forEach((b) => {
b.classList.remove('pressed');
});
btn.classList.add('pressed');
// Only show correct/wrong indicators without overlay
if (!btn.classList.contains('correct')) {
// Mark selected answer as wrong
btn.classList.add('show-wrong');
// Mark correct answer
keyboardButtons.forEach((b) => {
if (b.classList.contains('correct')) {
b.classList.add('show-correct');
}
});
// Wait 1.5 seconds then flip card
setTimeout(() => {
flipToBack();
}, 1500);
} else {
// Mark correct answer
btn.classList.add('show-correct');
// Wait 0.8 seconds then flip card
setTimeout(() => {
flipToBack();
}, 800);
}
}
};
}
});
}
delete window.randomKeysN;
delete window.mchOptionsN;
// Initialize front side if needed
if (isFrontSide && isMCh) {
// Integration complete
console.log("Data Analyst template front side initialized");
}
(function setThemeFromField() {
let theme = "{{Theme}}".trim();
document.addEventListener('DOMContentLoaded', function() {
const card = document.querySelector('.card-content');
if (card && theme && theme !== "{{Theme}}") {
card.setAttribute('theme', theme);
card.classList.add('theme-' + theme.toLowerCase());
}
});
})();
(function setThemeFromFieldBack() {
let theme = "{{Theme}}".trim();
document.addEventListener('DOMContentLoaded', function() {
const card = document.querySelector('.card-content');
if (card && theme && theme !== "{{Theme}}") {
card.setAttribute('theme', theme);
card.classList.add('theme-' + theme.toLowerCase());
}
});
})();
</script>
Thank you so much in advance for your assistance and for making this such a welcoming place to learn and grow.
Best regards,
Zennykenzo