mirror of
https://thingvellir.net/git/overte
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129 lines
3.8 KiB
JavaScript
129 lines
3.8 KiB
JavaScript
//
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// Created by Zach Pomerantz on June 16, 2016.
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// Copyright 2016 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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var SERVER = Account.metaverseServerURL + '/api/v1';
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var OVERLAY = null;
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// Every time you enter a domain, display the domain's metadata
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location.hostChanged.connect(function(host) {
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print('Detected host change:', host);
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// Fetch the domain ID from the directory server
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var placeData = request(SERVER + '/places/' + host);
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if (!placeData) {
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print('Cannot find place name - abandoning metadata request for', host);
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return;
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}
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var domainID = placeData.data.place.domain.id;
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print('Domain ID:', domainID);
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// Fetch the domain metadata from the directory server
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var domainData = request(SERVER + '/domains/' + domainID);
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print(SERVER + '/domains/' + domainID);
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if (!domainData) {
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print('Cannot find domain data - abandoning metadata request for', domainID);
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return;
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}
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var metadata = domainData.domain;
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print('Domain metadata:', JSON.stringify(metadata));
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// Display the fetched metadata in an overlay
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displayMetadata(host, metadata);
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});
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Script.scriptEnding.connect(clearMetadata);
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function displayMetadata(place, metadata) {
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clearMetadata();
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var COLOR_TEXT = { red: 255, green: 255, blue: 255 };
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var COLOR_BACKGROUND = { red: 0, green: 0, blue: 0 };
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var MARGIN = 200;
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var STARTING_OPACITY = 0.8;
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var FADE_AFTER_SEC = 2;
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var FADE_FOR_SEC = 4;
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var fade_per_sec = STARTING_OPACITY / FADE_FOR_SEC;
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var properties = {
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color: COLOR_TEXT,
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alpha: STARTING_OPACITY,
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backgroundColor: COLOR_BACKGROUND,
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backgroundAlpha: STARTING_OPACITY,
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font: { size: 24 },
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x: MARGIN,
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y: MARGIN
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};
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// Center the overlay on the screen
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properties.width = Window.innerWidth - MARGIN*2;
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properties.height = Window.innerHeight - MARGIN*2;
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// Parse the metadata into text
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parsed = [ 'Welcome to ' + place + '!',, ];
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if (metadata.description) {
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parsed.push(description);
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}
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if (metadata.tags && metadata.tags.length) {
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parsed.push('Tags: ' + metadata.tags.join(','));
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}
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if (metadata.capacity) {
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parsed.push('Capacity (max users): ' + metadata.capacity);
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}
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if (metadata.maturity) {
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parsed.push('Maturity: ' + metadata.maturity);
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}
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if (metadata.hosts && metadata.hosts.length) {
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parsed.push('Hosts: ' + metadata.tags.join(','));
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}
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if (metadata.online_users) {
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parsed.push('Users online: ' + metadata.online_users);
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}
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properties.text = parsed.join('\n\n');
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// Display the overlay
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OVERLAY = Overlays.addOverlay('text', properties);
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// Fade out the overlay over 10 seconds
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!function() {
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var overlay = OVERLAY;
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var alpha = STARTING_OPACITY;
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var fade = function() {
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// Only fade so long as the same overlay is up
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if (overlay == OVERLAY) {
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alpha -= fade_per_sec / 10;
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if (alpha <= 0) {
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clearMetadata();
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} else {
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Overlays.editOverlay(overlay, { alpha: alpha, backgroundAlpha: alpha });
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Script.setTimeout(fade, 100);
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}
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}
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};
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Script.setTimeout(fade, FADE_AFTER_SEC * 1000);
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}();
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}
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function clearMetadata() {
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if (OVERLAY) {
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Overlays.deleteOverlay(OVERLAY);
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}
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}
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// Request JSON from a url, synchronously
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function request(url) {
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var req = new XMLHttpRequest();
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req.responseType = 'json';
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req.open('GET', url, false);
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req.send();
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return req.status == 200 ? req.response : null;
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}
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