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GamepadTestAPI.html
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GamepadTestAPI.html
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<!--
/*
* Copyright 2019 Gregg Tavares
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
-->
<style>
body {
background: #444;
color: white;
font-family: monospace;
}
#gamepads>* {
background: #333;
padding: 1em;
margin: 10px 5px 0 0;
}
#gamepads pre {
white-space: pre-wrap;
}
.head {
display: flex;
}
.head .id {
flex: 1 1 auto;
}
.head .index,
.head .id {
display: inline-block;
background: #222;
padding: 0.5em;
}
.head .index {
}
.info .label {
width: 7em;
display: inline-block;
}
.info>div {
padding: 0.25em;
background: #222;
margin: 0.25em 0.25em 0 0;
}
.inputs {
display: flex;
}
.axes {
display: flex;
align-items: flex-start;
}
.svg text {
color: #CCC;
font-family: monospace;
}
.axes svg text {
font-size: 0.6px;
}
.buttons svg text {
font-size: 1.2px;
}
.axes>div, .buttons>div {
display: inline-block;
background: #222;
}
.axes>div {
margin: 2px 5px 0 0;
}
.buttons>div {
margin: 2px 2px 0 0;
}
</style>
<body>
<h1>HTML5 Gamepad Test</h1>
<div>running: <span id="running"></span></div>
<div id="gamepads"></div>
</body>
<script>
const fudgeFactor = 2; // because of bug in Chrome related to svg text alignment font sizes can not be < 1
const runningElem = document.querySelector('#running');
const gamepadsElem = document.querySelector('#gamepads');
const gamepadsByIndex = {};
const controllerTemplate = `
<div>
<div class="head"><div class="index"></div><div class="id"></div></div>
<div class="info"><div class="label">connected:</div><span class="connected"></span></div>
<div class="info"><div class="label">mapping:</div><span class="mapping"></span></div>
<div class="inputs">
<div class="axes"></div>
<div class="buttons"></div>
</div>
</div>
`;
const axisTemplate = `
<svg viewBox="-2.2 -2.2 4.4 4.4" width="128" height="128">
<circle cx="0" cy="0" r="2" fill="none" stroke="#888" stroke-width="0.04" />
<path d="M0,-2L0,2M-2,0L2,0" stroke="#888" stroke-width="0.04" />
<circle cx="0" cy="0" r="0.22" fill="red" class="axis" />
<text text-anchor="middle" fill="#CCC" x="0" y="2">0</text>
</svg>
`
const buttonTemplate = `
<svg viewBox="-2.2 -2.2 4.4 4.4" width="64" height="64">
<circle cx="0" cy="0" r="2" fill="none" stroke="#888" stroke-width="0.1" />
<circle cx="0" cy="0" r="0" fill="none" fill="red" class="button" />
<text class="value" dominant-baseline="middle" text-anchor="middle" fill="#CCC" x="0" y="0">0.00</text>
<text class="index" alignment-baseline="hanging" dominant-baseline="hanging" text-anchor="start" fill="#CCC" x="-2" y="-2">0</text>
</svg>
`;
function addGamepad(gamepad) {
console.log('add:', gamepad.index);
const elem = document.createElement('div');
elem.innerHTML = controllerTemplate;
const axesElem = elem.querySelector('.axes');
const buttonsElem = elem.querySelector('.buttons');
const axes = [];
for (let ndx = 0; ndx < gamepad.axes.length; ndx += 2) {
const div = document.createElement('div');
div.innerHTML = axisTemplate;
axesElem.appendChild(div);
axes.push({
axis: div.querySelector('.axis'),
value: div.querySelector('text'),
});
}
const buttons = [];
for (let ndx = 0; ndx < gamepad.buttons.length; ++ndx) {
console.log("Gamepad Total buttons=" + gamepad.buttons.length);
const div = document.createElement('div');
div.innerHTML = buttonTemplate;
buttonsElem.appendChild(div);
div.querySelector('.index').textContent = ndx;
buttons.push({
circle: div.querySelector('.button'),
value: div.querySelector('.value'),
});
}
gamepadsByIndex[gamepad.index] = {
gamepad,
elem,
axes,
buttons,
index: elem.querySelector('.index'),
id: elem.querySelector('.id'),
mapping: elem.querySelector('.mapping'),
connected: elem.querySelector('.connected'),
};
gamepadsElem.appendChild(elem);
}
function removeGamepad(gamepad) {
const info = gamepadsByIndex[gamepad.index];
if (info) {
delete gamepadsByIndex[gamepad.index];
info.elem.parentElement.removeChild(info.elem);
}
}
function addGamepadIfNew(gamepad) {
const info = gamepadsByIndex[gamepad.index];
if (!info) {
addGamepad(gamepad);
} else {
// This broke sometime in the past. It used to be
// the same gamepad object was returned forever.
// Then Chrome only changed to a new gamepad object
// is returned every frame.
info.gamepad = gamepad;
}
}
function handleConnect(e) {
console.log('connect');
addGamepadIfNew(e.gamepad);
}
function handleDisconnect(e) {
console.log('disconnect');
removeGamepad(e.gamepad);
}
const t = String.fromCharCode(0x26AA);
const f = String.fromCharCode(0x26AB);
function onOff(v) {
return v ? t : f;
}
const keys = ['index', 'id', 'connected', 'mapping', /*'timestamp'*/];
function processController(info) {
const {elem, gamepad, axes, buttons} = info;
const lines = [`gamepad : ${gamepad.index}`];
for (const key of keys) {
info[key].textContent = gamepad[key];
}
axes.forEach(({axis, value}, ndx) => {
const off = ndx * 2;
axis.setAttributeNS(null, 'cx', gamepad.axes[off ] * fudgeFactor);
axis.setAttributeNS(null, 'cy', gamepad.axes[off + 1] * fudgeFactor);
value.textContent = `${gamepad.axes[off].toFixed(2).padStart(5)},${gamepad.axes[off + 1].toFixed(2).padStart(5)}`;
});
buttons.forEach(({circle, value}, ndx) => {
const button = gamepad.buttons[ndx];
if( button.pressed ) {
const DateNow = Date.now();
console.log("button: " + ndx + " pressed. ev timestamp: " + gamepad.timestamp + " epoch time: " + DateNow + " value: " + button.pressed);
//console.log("Manoj--> button num=" + ndx, "pressed=" + button.pressed);
}
circle.setAttributeNS(null, 'r', button.value * fudgeFactor);
circle.setAttributeNS(null, 'fill', button.pressed ? 'red' : 'gray');
value.textContent = `${button.value.toFixed(2)}`;
});
// lines.push(`axes : [${gamepad.axes.map((v, ndx) => `${ndx}: ${v.toFixed(2).padStart(5)}`).join(', ')} ]`);
// lines.push(`buttons : [${gamepad.buttons.map((v, ndx) => `${ndx}: ${onOff(v.pressed)} ${v.value.toFixed(2)}`).join(', ')} ]`);
// elem.textContent = lines.join('\n');
}
function addNewPads() {
const gamepads = navigator.getGamepads();
for (let i = 0; i < gamepads.length; i++) {
const gamepad = gamepads[i]
if (gamepad) {
addGamepadIfNew(gamepad);
}
}
}
window.addEventListener("gamepadconnected", handleConnect);
window.addEventListener("gamepaddisconnected", handleDisconnect);
function process() {
runningElem.textContent = ((performance.now() * 0.001 * 60 | 0) % 100).toString().padStart(2, '0');
addNewPads(); // some browsers add by polling, others by event
Object.values(gamepadsByIndex).forEach(processController);
requestAnimationFrame(process);
}
requestAnimationFrame(process);
</script>