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113 lines
4.1 KiB
JavaScript
113 lines
4.1 KiB
JavaScript
"use strict";
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/*jslint nomen: true, plusplus: true, vars: true*/
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var Vec3, Quat, MyAvatar, Entities, Camera, Script, print;
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//
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// Created by Howard Stearns
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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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// Drops a bunch of physical spheres which each run an entity script that moves away
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// from you once a second if you are within range.
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//
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// This is a test of how many physical, entity-scripted objects can be around if
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// they are mostly not doing anything -- i.e., just the basic overhead of such objects.
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// They do need a moment to settle out of active physics after being dropped, but only
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// a moment -- that's why they are in a sparse grid.
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var USE_FLAT_FLOOR = true; // Give 'em a flat place to settle on.
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var ROWS_X = 30;
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var ROWS_Z = 30;
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var SEPARATION = 1; // meters
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var LIFETIME = 60; // seconds
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var DISTANCE_RATE = 1; // hz
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var DISTANCE_ALLOWANCE = 3; // meters. Must be this close to cause entity to move
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var DISTANCE_SCALE = 0.5; // velocity will be scale x vector from user to entity
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var SIZE = 0.5;
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var TYPE = "Sphere";
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// Note that when creating things quickly, the entity server will ignore data if we send updates too quickly.
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// like Internet MTU, these rates are set by th domain operator, so in this script there is a RATE_PER_SECOND
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// variable letting you set this speed. If entities are missing from the grid after a relog, this number
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// being too high may be the reason.
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var RATE_PER_SECOND = 600; // The entity server will drop data if we create things too fast.
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var SCRIPT_INTERVAL = 100;
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var GRAVITY = { x: 0, y: -9.8, z: 0 };
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var VELOCITY = { x: 0.0, y: 0.1, z: 0 };
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var DAMPING = 0.75;
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var ANGULAR_DAMPING = 0.75;
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var RANGE = 3;
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var HOW_FAR_UP = 2; // for uneven ground
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var x = 0;
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var z = 0;
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var totalCreated = 0;
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var xDim = ROWS_X * SEPARATION;
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var zDim = ROWS_Z * SEPARATION;
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var totalToCreate = ROWS_X * ROWS_Z;
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var origin = Vec3.sum(MyAvatar.position, {x: xDim / -2, y: HOW_FAR_UP, z: zDim / -2});
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print("Creating " + totalToCreate + " origined on " + JSON.stringify(MyAvatar.position) +
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", starting at " + JSON.stringify(origin));
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var parameters = JSON.stringify({
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distanceRate: DISTANCE_RATE,
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distanceScale: DISTANCE_SCALE,
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distanceAllowance: DISTANCE_ALLOWANCE
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});
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var startTime = new Date();
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if (USE_FLAT_FLOOR) {
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Entities.addEntity({
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type: 'Box',
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name: 'keepAwayFloor',
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lifetime: LIFETIME,
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collisionsWillMove: false,
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color: {red: 255, green: 0, blue: 0},
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position: Vec3.sum(origin, {x: xDim / 2, y: -1 - HOW_FAR_UP, z: zDim / 2}),
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dimensions: {x: xDim + SEPARATION, y: 0.2, z: zDim + SEPARATION}
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});
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}
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Script.setInterval(function () {
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if (!Entities.serversExist() || !Entities.canRez()) {
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return;
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}
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var i, properties, numToCreate = Math.min(RATE_PER_SECOND * (SCRIPT_INTERVAL / 1000.0), totalToCreate - totalCreated);
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for (i = 0; i < numToCreate; i++) {
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properties = {
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userData: parameters,
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type: TYPE,
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name: "keepAway-" + totalCreated,
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position: {
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x: origin.x + SIZE + (x * SEPARATION),
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y: origin.y,
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z: origin.z + SIZE + (z * SEPARATION)
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},
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dimensions: {x: SIZE, y: SIZE, z: SIZE},
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color: {red: Math.random() * 255, green: Math.random() * 255, blue: Math.random() * 255},
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velocity: VELOCITY,
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damping: DAMPING,
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angularDamping: ANGULAR_DAMPING,
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gravity: GRAVITY,
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collisionsWillMove: true,
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lifetime: LIFETIME,
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script: Script.resolvePath("keepAwayEntity.js")
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};
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Entities.addEntity(properties);
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totalCreated++;
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x++;
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if (x === ROWS_X) {
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x = 0;
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z++;
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print("Created: " + totalCreated);
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}
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if (z === ROWS_Z) {
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print("Total: " + totalCreated + " entities in " + ((new Date() - startTime) / 1000.0) + " seconds.");
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Script.stop();
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}
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}
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}, SCRIPT_INTERVAL);
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