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814 lines
No EOL
21 KiB
JavaScript
814 lines
No EOL
21 KiB
JavaScript
//
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// solarsystem.js
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// games
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//
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// Created by Bridget Went, 5/28/15.
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// Copyright 2015 High Fidelity, Inc.
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//
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// The start to a project to build a virtual physics classroom to simulate the solar system, gravity, and orbital physics.
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// - A sun with oribiting planets is created in front of the user
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// - UI elements allow for adjusting the period, gravity, trails, and energy recalculations
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// - Click "PAUSE" to pause the animation and show planet labels
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// - In this mode, double-click a planet label to zoom in on that planet
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// -Double-clicking on earth label initiates satellite orbiter game
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// -Press "TAB" to toggle back to solar system view
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//
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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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Script.include([
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'games/satellite.js'
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]);
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var DAMPING = 0.0;
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var LIFETIME = 6000;
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var BASE_URL = "https://s3.amazonaws.com/hifi-public/marketplace/hificontent/Scripts/planets/planets/";
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// Save intiial avatar and camera position
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var startingPosition = {
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x: 8000,
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y: 8000,
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z: 8000
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};
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MyAvatar.position = startingPosition;
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var cameraStart = Camera.getOrientation();
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// Place the sun
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var MAX_RANGE = 80.0;
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var center = Vec3.sum(startingPosition, Vec3.multiply(MAX_RANGE, Vec3.normalize(Quat.getFront(Camera.getOrientation()))));
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var SUN_SIZE = 7.0;
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var theSun = Entities.addEntity({
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type: "Model",
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modelURL: BASE_URL + "sun.fbx",
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position: center,
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dimensions: {
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x: SUN_SIZE,
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y: SUN_SIZE,
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z: SUN_SIZE
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},
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angularVelocity: {
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x: 0.0,
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y: 0.1,
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z: 0.0
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},
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angularDamping: DAMPING,
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damping: DAMPING,
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ignoreCollisions: false,
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lifetime: LIFETIME,
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collisionsWillMove: false
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});
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// Reference values for physical constants
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var referenceRadius = 15.0;
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var referenceDiameter = 0.6;
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var referencePeriod = 3.0;
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var LARGE_BODY_MASS = 250.0;
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var SMALL_BODY_MASS = LARGE_BODY_MASS * 0.000000333;
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var GRAVITY = (Math.pow(referenceRadius, 3.0) / Math.pow((referencePeriod / (2.0 * Math.PI)), 2.0)) / LARGE_BODY_MASS;
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var REFERENCE_GRAVITY = GRAVITY;
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var planets = [];
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var planetCount = 0;
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var trailsEnabled = true;
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var MAX_POINTS_PER_LINE = 60;
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var LINE_DIM = 200;
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var LINE_WIDTH = 20;
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var VELOCITY_OFFSET_Y = -0.3;
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var VELOCITY_OFFSET_Z = 0.9;
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var index = 0;
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var Planet = function(name, trailColor, radiusScale, sizeScale) {
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this.name = name;
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this.trailColor = trailColor;
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this.trail = [];
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this.lineStack = [];
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this.radius = radiusScale * referenceRadius;
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this.position = Vec3.sum(center, {
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x: this.radius,
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y: 0.0,
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z: 0.0
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});
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this.period = (2.0 * Math.PI) * Math.sqrt(Math.pow(this.radius, 3.0) / (GRAVITY * LARGE_BODY_MASS));
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this.gravity = GRAVITY;
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this.initialVelocity = Math.sqrt((GRAVITY * LARGE_BODY_MASS) / this.radius);
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this.velocity = Vec3.multiply(this.initialVelocity, Vec3.normalize({
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x: 0,
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y: VELOCITY_OFFSET_Y,
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z: VELOCITY_OFFSET_Z
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}));
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this.dimensions = sizeScale * referenceDiameter;
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this.sizeScale = sizeScale;
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this.planet = Entities.addEntity({
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type: "Model",
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modelURL: BASE_URL + name + ".fbx",
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position: this.position,
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dimensions: {
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x: this.dimensions,
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y: this.dimensions,
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z: this.dimensions
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},
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velocity: this.velocity,
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angularDamping: DAMPING,
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damping: DAMPING,
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ignoreCollisions: false,
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lifetime: LIFETIME,
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collisionsWillMove: true,
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});
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this.computeAcceleration = function() {
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var acc = -(this.gravity * LARGE_BODY_MASS) * Math.pow(this.radius, (-2.0));
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return acc;
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};
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this.update = function(timeStep) {
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var between = Vec3.subtract(this.position, center);
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var speed = this.computeAcceleration(this.radius) * timeStep;
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var vel = Vec3.multiply(speed, Vec3.normalize(between));
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// Update velocity and position
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this.velocity = Vec3.sum(this.velocity, vel);
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this.position = Vec3.sum(this.position, Vec3.multiply(timeStep, this.velocity));
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Entities.editEntity(this.planet, {
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velocity: this.velocity,
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position: this.position
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});
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if (trailsEnabled) {
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this.updateTrail();
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}
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};
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this.resetTrails = function() {
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elapsed = 0.0;
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this.trail = [];
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this.lineStack = [];
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//add the first line to both the line entity stack and the trail
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this.trail.push(newLine(this.lineStack, this.position, this.period, this.trailColor));
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};
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this.updateTrail = function() {
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var point = this.position;
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var linePos = Entities.getEntityProperties(this.lineStack[this.lineStack.length - 1]).position;
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this.trail.push(computeLocalPoint(linePos, point));
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Entities.editEntity(this.lineStack[this.lineStack.length - 1], {
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linePoints: this.trail
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});
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if (this.trail.length == MAX_POINTS_PER_LINE) {
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this.trail = newLine(this.lineStack, point, this.period, this.trailColor);
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}
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};
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this.zoom = function() {
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Script.include('file:///Users/bridget/Desktop/tween.js');
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init(this);
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// var viewingRange = sizeScale * 2.0;
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// var direction = Vec3.subtract(this.position, MyAvatar.position);
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// var dist = Vec3.length(direction);
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// var timer = 0;
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// while (dist > viewingRange && timer < 8000000) {
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// timer++;
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// if (timer % 10000 == 0) {
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// MyAvatar.position = Vec3.sum(MyAvatar.position, Vec3.normalize(direction));
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// direction = Vec3.subtract(this.position, MyAvatar.position);
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// dist = Vec3.length(direction);
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// }
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// }
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};
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this.adjustPeriod = function(alpha) {
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// Update global G constant, period, poke velocity to new value
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var ratio = this.last_alpha / alpha;
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this.gravity = Math.pow(ratio, 2.0) * GRAVITY;
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this.period = ratio * this.period;
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this.velocity = Vec3.multiply(ratio, this.velocity);
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this.last_alpha = alpha;
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};
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index++;
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this.resetTrails();
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}
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// rideOrbit = function() {
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// Script.include('file:///Users/bridget/Desktop/tween.js');
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// init();
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// }
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var MERCURY_LINE_COLOR = {
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red: 255,
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green: 255,
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blue: 255
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};
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var VENUS_LINE_COLOR = {
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red: 255,
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green: 160,
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blue: 110
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};
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var EARTH_LINE_COLOR = {
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red: 10,
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green: 150,
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blue: 160
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};
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var MARS_LINE_COLOR = {
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red: 180,
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green: 70,
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blue: 10
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};
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var JUPITER_LINE_COLOR = {
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red: 250,
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green: 140,
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blue: 0
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};
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var SATURN_LINE_COLOR = {
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red: 235,
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green: 215,
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blue: 0
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};
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var URANUS_LINE_COLOR = {
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red: 135,
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green: 205,
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blue: 240
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};
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var NEPTUNE_LINE_COLOR = {
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red: 30,
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green: 140,
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blue: 255
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};
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var PLUTO_LINE_COLOR = {
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red: 255,
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green: 255,
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blue: 255
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};
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planets.push(new Planet("mercury", MERCURY_LINE_COLOR, 0.387, 0.383));
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planets.push(new Planet("venus", VENUS_LINE_COLOR, 0.723, 0.949));
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planets.push(new Planet("earth", EARTH_LINE_COLOR, 1.0, 1.0));
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planets.push(new Planet("mars", MARS_LINE_COLOR, 1.52, 0.532));
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planets.push(new Planet("jupiter", JUPITER_LINE_COLOR, 5.20, 11.21));
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planets.push(new Planet("saturn", SATURN_LINE_COLOR, 9.58, 9.45));
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planets.push(new Planet("uranus", URANUS_LINE_COLOR, 19.20, 4.01));
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planets.push(new Planet("neptune", NEPTUNE_LINE_COLOR, 30.05, 3.88));
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planets.push(new Planet("pluto", PLUTO_LINE_COLOR, 39.48, 0.186));
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var LABEL_X = 8.0;
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var LABEL_Y = 3.0;
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var LABEL_Z = 1.0;
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var LABEL_DIST = 8.0;
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var TEXT_HEIGHT = 1.0;
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var PlanetLabel = function(name, index) {
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var text = name + " Speed: " + Vec3.length(planets[index].velocity).toFixed(2);
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this.labelPos = Vec3.sum(planets[index].position, {
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x: 0.0,
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y: LABEL_DIST,
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z: LABEL_DIST
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});
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this.linePos = planets[index].position;
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this.line = Entities.addEntity({
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type: "Line",
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position: this.linePos,
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dimensions: {
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x: 20,
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y: 20,
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z: 20
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},
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lineWidth: LINE_WIDTH,
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color: {
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red: 255,
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green: 255,
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blue: 255
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},
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linePoints: [{
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x: 0,
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y: 0,
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z: 0
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},
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computeLocalPoint(this.linePos, this.labelPos)
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],
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visible: false
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});
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this.label = Entities.addEntity({
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type: "Text",
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text: text,
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lineHeight: TEXT_HEIGHT,
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dimensions: {
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x: LABEL_X,
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y: LABEL_Y,
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z: LABEL_Z
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},
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position: this.labelPos,
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backgroundColor: {
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red: 10,
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green: 10,
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blue: 10
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},
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faceCamera: true,
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visible: false
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});
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this.show = function() {
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this.showing = true;
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Entities.editEntity(this.line, {
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visible: true
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});
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Entities.editEntity(this.label, {
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visible: true
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});
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}
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this.hide = function() {
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this.showing = false;
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Entities.editEntity(this.line, {
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visible: false
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});
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Entities.editEntity(this.label, {
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visible: false
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});
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}
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}
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var time = 0.0;
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var elapsed;
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var TIME_STEP = 60.0;
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var dt = 1.0 / TIME_STEP;
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var planetLines = [];
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var trails = [];
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var paused = false;
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function update(deltaTime) {
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if (paused) {
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return;
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}
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//deltaTime = dt;
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time++;
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if (time % TIME_STEP == 0) {
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elapsed++;
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}
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for (var i = 0; i < planets.length; ++i) {
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planets[i].update(deltaTime);
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}
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}
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function pause() {
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for (var i = 0; i < planets.length; ++i) {
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Entities.editEntity(planets[i].planet, {
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velocity: {
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x: 0.0,
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y: 0.0,
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z: 0.0
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}
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});
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planets[i].label = new PlanetLabel(planets[i].name, i);
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planets[i].label.show();
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}
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paused = true;
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}
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function resume() {
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for (var i = 0; i < planets.length; ++i) {
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planets[i].label.hide();
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}
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paused = false;
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}
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function computeLocalPoint(linePos, worldPoint) {
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var localPoint = Vec3.subtract(worldPoint, linePos);
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return localPoint;
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}
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// Create a new line
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function newLine(lineStack, point, period, color) {
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if (elapsed < period) {
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var line = Entities.addEntity({
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position: point,
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type: "Line",
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color: color,
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dimensions: {
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x: LINE_DIM,
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y: LINE_DIM,
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z: LINE_DIM
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},
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lifetime: LIFETIME,
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lineWidth: LINE_WIDTH
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});
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lineStack.push(line);
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} else {
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// Begin overwriting first lines after one full revolution (one period)
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var firstLine = lineStack.shift();
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Entities.editEntity(firstLine, {
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position: point,
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linePoints: [{
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x: 0.0,
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y: 0.0,
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z: 0.0
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}]
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});
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lineStack.push(firstLine);
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}
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var points = [];
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points.push(computeLocalPoint(point, point));
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return points;
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}
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var spacing = 8;
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var textWidth = 70;
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var buttonWidth = 30;
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var buttonHeight = 30;
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var ICONS_URL = 'https://s3.amazonaws.com/hifi-public/marketplace/hificontent/Scripts/planets/images/';
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var UIPanel = function(x, y, orientation) {
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this.visible = false;
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this.buttons = [];
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this.x = x;
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this.y = y;
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this.nextX = x + spacing;
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this.nextY = y + spacing;
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this.width = spacing * 2.0;
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this.height = spacing * 2.0;
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this.background = Overlays.addOverlay("text", {
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backgroundColor: {
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red: 240,
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green: 240,
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blue: 255
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},
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x: this.x,
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y: this.y,
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width: this.width,
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height: this.height,
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alpha: 1.0,
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backgroundAlpha: 0.7,
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visible: false
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});
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this.addIcon = function(iconID) {
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var icon = Overlays.addOverlay("image", {
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color: {
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red: 255,
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green: 255,
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blue: 255
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},
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imageURL: ICONS_URL + iconID + '.svg',
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x: this.nextX,
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y: this.nextY,
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width: buttonWidth,
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height: buttonHeight,
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alpha: 1.0,
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visible: false
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});
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if (orientation === 'horizontal') {
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this.nextX += buttonWidth + spacing;
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this.width += buttonWidth;
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} else if (orientation === 'vertical') {
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this.nextY += buttonHeight + spacing;
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this.height += buttonHeight;
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}
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Overlays.editOverlay(this.background, {
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width: buttonWidth + this.width,
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height: buttonHeight + this.height
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});
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this.buttons.push(icon);
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return icon;
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};
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this.addText = function(text) {
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var icon = Overlays.addOverlay("text", {
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color: {
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red: 240,
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green: 240,
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blue: 255
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},
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text: text,
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x: this.nextX,
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y: this.nextY,
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width: textWidth,
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height: buttonHeight,
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visible: false
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});
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if (orientation === 'horizontal') {
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this.nextX += textWidth + spacing;
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this.width += textWidth;
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} else if (orientation === 'vertical') {
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this.nextY += buttonHeight + spacing;
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this.height += buttonHeight;
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}
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Overlays.editOverlay(this.background, {
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width: textWidth + this.width,
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height: buttonHeight + this.height
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});
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this.buttons.push(icon);
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return icon;
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};
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this.show = function() {
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Overlays.editOverlay(this.background, {
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visible: true
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});
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for (var i in this.buttons) {
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Overlays.editOverlay(this.buttons[i], {
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visible: true
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});
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}
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this.visible = true;
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};
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this.hide = function() {
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Overlays.editOverlay(this.background, {
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visible: false
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});
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for (var i in this.buttons) {
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Overlays.editOverlay(this.buttons[i], {
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visible: false
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});
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}
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this.visible = false;
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};
|
|
|
|
this.remove = function() {
|
|
Overlays.deleteOverlay(this.background);
|
|
for (var i in this.buttons) {
|
|
Overlays.deleteOverlay(this.buttons[i]);
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
var panelX = 1250;
|
|
var panelY = 500;
|
|
var panelWidth = 50;
|
|
var panelHeight = 210;
|
|
|
|
var mainPanel = new UIPanel(panelX, panelY, 'vertical');
|
|
|
|
var systemViewButton = mainPanel.addIcon('solarsystems');
|
|
var systemViewPanel = new UIPanel(panelX - 140, panelY, 'horizontal');
|
|
var reverseButton = systemViewPanel.addIcon('reverse');
|
|
var pauseButton = systemViewPanel.addIcon('playpause');
|
|
var forwardButton = systemViewPanel.addIcon('forward');
|
|
|
|
var zoomButton = mainPanel.addIcon('magnifier');
|
|
var zoomPanel = new UIPanel(panelX - 900, panelY + (buttonHeight + spacing) * 4.0, 'horizontal');
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
zoomPanel.addText(planets[i].name);
|
|
}
|
|
|
|
var satelliteButton = mainPanel.addIcon('satellite');
|
|
var settingsButton = mainPanel.addIcon('settings');
|
|
var stopButton = mainPanel.addIcon('close');
|
|
|
|
mainPanel.show();
|
|
|
|
Script.include('../utilities/tools/cookies.js');
|
|
|
|
|
|
var satelliteView;
|
|
var satelliteGame;
|
|
var settings = new Panel(panelX - 610, panelY - 80);
|
|
|
|
var g_multiplier = 1.0;
|
|
settings.newSlider("Gravitational Force ", 0.1, 5.0,
|
|
function(value) {
|
|
g_multiplier = value;
|
|
GRAVITY = REFERENCE_GRAVITY * g_multiplier;
|
|
},
|
|
|
|
function() {
|
|
return g_multiplier;
|
|
},
|
|
function(value) {
|
|
return value.toFixed(1) + "x";
|
|
});
|
|
|
|
|
|
var subPanel = settings.newSubPanel("Orbital Periods");
|
|
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
planets[i].period_multiplier = 1.0;
|
|
planets[i].last_alpha = planets[i].period_multiplier;
|
|
|
|
subPanel.newSlider(planets[i].name, 0.1, 3.0,
|
|
function(value) {
|
|
planets[i].period_multiplier = value;
|
|
planets[i].adjustPeriod(value);
|
|
},
|
|
function() {
|
|
return planets[i].period_multiplier;
|
|
},
|
|
function(value) {
|
|
return (value).toFixed(2) + "x";
|
|
});
|
|
}
|
|
settings.newCheckbox("Leave Trails: ",
|
|
function(value) {
|
|
trailsEnabled = value;
|
|
if (trailsEnabled) {
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
planets[i].resetTrails();
|
|
}
|
|
//if trails are off and we've already created trails, remove existing trails
|
|
} else {
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
for (var j = 0; j < planets[i].lineStack.length; ++j) {
|
|
Entities.editEntity(planets[i].lineStack[j], {
|
|
visible: false
|
|
});
|
|
}
|
|
planets[i].lineStack = [];
|
|
}
|
|
}
|
|
},
|
|
function() {
|
|
return trailsEnabled;
|
|
},
|
|
function(value) {
|
|
return value;
|
|
});
|
|
settings.hide();
|
|
|
|
|
|
function mousePressEvent(event) {
|
|
|
|
var clicked = Overlays.getOverlayAtPoint({
|
|
x: event.x,
|
|
y: event.y
|
|
});
|
|
|
|
if (clicked == systemViewButton) {
|
|
MyAvatar.position = startingPosition;
|
|
Camera.setOrientation(cameraStart);
|
|
if (paused) {
|
|
resume();
|
|
}
|
|
|
|
if (!systemViewPanel.visible) {
|
|
systemViewPanel.show();
|
|
} else {
|
|
systemViewPanel.hide();
|
|
}
|
|
}
|
|
var zoomed = false;
|
|
if (clicked == zoomButton && !satelliteView) {
|
|
if (!zoomPanel.visible) {
|
|
zoomPanel.show();
|
|
pause();
|
|
} else {
|
|
zoomPanel.hide();
|
|
if (zoomed) {
|
|
|
|
MyAvatar.position = startingPosition;
|
|
Camera.setOrientation(cameraStart);
|
|
resume();
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
if (zoomPanel.visible && clicked == zoomPanel.buttons[i]) {
|
|
planets[i].zoom();
|
|
zoomed = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (systemViewPanel.visible && clicked == pauseButton) {
|
|
if (!paused) {
|
|
pause();
|
|
} else {
|
|
resume();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
if (clicked == satelliteButton) {
|
|
if (satelliteView) {
|
|
satelliteGame.endGame();
|
|
MyAvatar.position = startingPosition;
|
|
satelliteView = false;
|
|
resume();
|
|
} else {
|
|
pause();
|
|
var confirmed = Window.confirm("Start satellite game?");
|
|
if (!confirmed) {
|
|
resume();
|
|
continue;
|
|
}
|
|
satelliteView = true;
|
|
MyAvatar.position = {
|
|
x: 200,
|
|
y: 200,
|
|
z: 200
|
|
};
|
|
Camera.setPosition({
|
|
x: 200,
|
|
y: 200,
|
|
z: 200
|
|
});
|
|
satelliteGame = new SatelliteGame();
|
|
}
|
|
}
|
|
|
|
if (clicked == settingsButton) {
|
|
if (!settings.visible) {
|
|
settings.show();
|
|
} else {
|
|
settings.hide();
|
|
}
|
|
}
|
|
|
|
if (clicked == stopButton) {
|
|
Script.stop();
|
|
}
|
|
}
|
|
|
|
|
|
// Clean up models, UI panels, lines, and button overlays
|
|
function scriptEnding() {
|
|
mainPanel.remove();
|
|
systemViewPanel.remove();
|
|
zoomPanel.remove();
|
|
|
|
settings.destroy();
|
|
|
|
Entities.deleteEntity(theSun);
|
|
for (var i = 0; i < planets.length; ++i) {
|
|
Entities.deleteEntity(planets[i].planet);
|
|
}
|
|
|
|
var e = Entities.findEntities(MyAvatar.position, 16000);
|
|
for (i = 0; i < e.length; i++) {
|
|
var props = Entities.getEntityProperties(e[i]);
|
|
if (props.type === "Line" || props.type === "Text") {
|
|
Entities.deleteEntity(e[i]);
|
|
}
|
|
}
|
|
};
|
|
|
|
Controller.mousePressEvent.connect(mousePressEvent);
|
|
|
|
Controller.mouseMoveEvent.connect(function panelMouseMoveEvent(event) {
|
|
return settings.mouseMoveEvent(event);
|
|
});
|
|
Controller.mousePressEvent.connect(function panelMousePressEvent(event) {
|
|
return settings.mousePressEvent(event);
|
|
});
|
|
Controller.mouseDoublePressEvent.connect(function panelMouseDoublePressEvent(event) {
|
|
return settings.mouseDoublePressEvent(event);
|
|
});
|
|
Controller.mouseReleaseEvent.connect(function(event) {
|
|
return settings.mouseReleaseEvent(event);
|
|
});
|
|
Controller.keyPressEvent.connect(function(event) {
|
|
return settings.keyPressEvent(event);
|
|
});
|
|
|
|
|
|
|
|
|
|
|
|
Script.scriptEnding.connect(scriptEnding);
|
|
Script.update.connect(update); |