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add example script for metadata from metaverse

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Zach Pomerantz 2016-06-16 15:22:34 -07:00
parent 0f9c637c5a
commit aca3d4d90b
1 changed files with 105 additions and 13 deletions
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118
scripts/tutorials/getDomainMetadata.js
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@ -6,23 +6,115 @@
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
// Avoid polluting the namespace
// !function() {
var MetadataNotification = null;
var SERVER = 'https://metaverse.highfidelity.com/api/v1';
// Every time you enter a domain, display the domain's metadata
SomeEvent.connect(function() {
// Fetch the domain metadata from the directory
var OVERLAY = null;
// Display the fetched metadata in an overlay
// Every time you enter a domain, display the domain's metadata
location.hostChanged.connect(function(host) {
print('Detected host change:', host);
});
// Fetch the domain ID from the metaverse
var placeData = request(SERVER + '/places/' + host);
if (!placeData) { return; }
var domainID = placeData.data.place.domain.id;
print('Domain ID:', domainID);
// Remove the overlay if the script is stopped
Script.scriptEnding.connect(teardown);
// Fetch the domain metadata from the metaverse
var domainData = request(SERVER + '/domains/' + domainID);
print(SERVER + '/domains/' + domainID);
if (!domainData) { return; }
var metadata = domainData.domain;
print('Domain metadata:', JSON.stringify(metadata));
function teardown() {
// Close the overlay, if it exists
// Display the fetched metadata in an overlay
displayMetadata(host, metadata);
});
Script.scriptEnding.connect(clearMetadata);
function displayMetadata(place, metadata) {
clearMetadata();
var COLOR_TEXT = { red: 255, green: 255, blue: 255 };
var COLOR_BACKGROUND = { red: 0, green: 0, blue: 0 };
var MARGIN = 200;
var STARTING_OPACITY = 0.8;
var FADE_AFTER_SEC = 2;
var FADE_FOR_SEC = 4;
var fade_per_sec = STARTING_OPACITY / FADE_FOR_SEC;
var properties = {
color: COLOR_TEXT,
alpha: STARTING_OPACITY,
backgroundColor: COLOR_BACKGROUND,
backgroundAlpha: STARTING_OPACITY,
font: { size: 24 },
x: MARGIN,
y: MARGIN
};
// Center the overlay on the screen
properties.width = Window.innerWidth - MARGIN*2;
properties.height = Window.innerHeight - MARGIN*2;
// Parse the metadata into text
parsed = [ 'Welcome to ' + place + '!',, ];
if (metadata.description) {
parsed.push(description);
}
// }();
if (metadata.tags && metadata.tags.length) {
parsed.push('Tags: ' + metadata.tags.join(','));
}
if (metadata.capacity) {
parsed.push('Capacity (max users): ' + metadata.capacity);
}
if (metadata.maturity) {
parsed.push('Maturity: ' + metadata.maturity);
}
if (metadata.hosts && metadata.hosts.length) {
parsed.push('Hosts: ' + metadata.tags.join(','));
}
if (metadata.online_users) {
parsed.push('Users online: ' + metadata.online_users);
}
properties.text = parsed.join('\n\n');
// Display the overlay
OVERLAY = Overlays.addOverlay('text', properties);
// Fade out the overlay over 10 seconds
!function() {
var overlay = OVERLAY;
var alpha = STARTING_OPACITY;
var fade = function() {
// Only fade so long as the same overlay is up
if (overlay == OVERLAY) {
alpha -= fade_per_sec / 10;
if (alpha <= 0) {
clearMetadata();
} else {
Overlays.editOverlay(overlay, { alpha: alpha, backgroundAlpha: alpha });
Script.setTimeout(fade, 100);
}
}
};
Script.setTimeout(fade, FADE_AFTER_SEC * 1000);
}();
}
function clearMetadata() {
if (OVERLAY) { Overlays.deleteOverlay(OVERLAY); }
}
// Request JSON from a url, synchronously
function request(url) {
var req = new XMLHttpRequest();
req.responseType = 'json';
req.open('GET', url, false);
req.send();
return req.status == 200 ? req.response : null;
}