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Replaced nonfunctioning particleBird.js with awesome particleBirds.js
This commit is contained in:
barnold1953
parent
81ed0d99f7
commit
055a62e7e5
2 changed files with 222 additions and 202 deletions
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@ -1,202 +0,0 @@
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//
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// particleBird.js
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// examples
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//
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// Copyright 2014 High Fidelity, Inc.
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//
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// This sample script moves a voxel around like a bird and sometimes makes tweeting noises
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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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function vLength(v) {
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return Math.sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
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}
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function printVector(v) {
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print(v.x + ", " + v.y + ", " + v.z + "\n");
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}
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// Create a random vector with individual lengths between a,b
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function randVector(a, b) {
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var rval = { x: a + Math.random() * (b - a), y: a + Math.random() * (b - a), z: a + Math.random() * (b - a) };
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return rval;
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}
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function vMinus(a, b) {
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var rval = { x: a.x - b.x, y: a.y - b.y, z: a.z - b.z };
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return rval;
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}
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function vPlus(a, b) {
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var rval = { x: a.x + b.x, y: a.y + b.y, z: a.z + b.z };
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return rval;
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}
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function vCopy(a, b) {
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a.x = b.x;
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a.y = b.y;
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a.z = b.z;
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return;
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}
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// Returns a vector which is fraction of the way between a and b
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function vInterpolate(a, b, fraction) {
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var rval = { x: a.x + (b.x - a.x) * fraction, y: a.y + (b.y - a.y) * fraction, z: a.z + (b.z - a.z) * fraction };
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return rval;
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}
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// Decide what kind of bird we are
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var tweet;
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var color;
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var size;
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var which = Math.random();
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if (which < 0.2) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/bushtit_1.raw");
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color = { r: 100, g: 50, b: 120 };
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size = 0.08;
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} else if (which < 0.4) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/rosyfacedlovebird.raw");
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color = { r: 100, g: 150, b: 75 };
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size = 0.09;
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} else if (which < 0.6) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/saysphoebe.raw");
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color = { r: 84, g: 121, b: 36 };
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size = 0.05;
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} else if (which < 0.8) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/mexicanWhipoorwill.raw");
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color = { r: 23, g: 197, b: 230 };
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size = 0.12;
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} else {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/westernscreechowl.raw");
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color = { r: 50, g: 67, b: 144 };
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size = 0.15;
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}
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var startTimeInSeconds = new Date().getTime() / 1000;
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var birdLifetime = 20; // lifetime of the bird in seconds!
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var position = { x: 0, y: 0, z: 0 };
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var targetPosition = { x: 0, y: 0, z: 0 };
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var range = 1.0; // Over what distance in meters do you want your bird to fly around
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var frame = 0;
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var moving = false;
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var tweeting = 0;
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var moved = false;
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var CHANCE_OF_MOVING = 0.00;
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var CHANCE_OF_FLAPPING = 0.05;
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var CHANCE_OF_TWEETING = 0.05;
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var START_HEIGHT_ABOVE_ME = 1.5;
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var BIRD_GRAVITY = -0.1;
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var BIRD_FLAP = 1.0;
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var myPosition = MyAvatar.position;
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var properties = {
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lifetime: birdLifetime,
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position: { x: myPosition.x, y: myPosition.y + START_HEIGHT_ABOVE_ME, z: myPosition.z },
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velocity: { x: 0, y: Math.random() * BIRD_FLAP, z: 0 },
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gravity: { x: 0, y: BIRD_GRAVITY, z: 0 },
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radius : 0.1,
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color: { red: 0,
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green: 255,
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blue: 0 }
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};
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var range = 1.0; // Distance around avatar where I can move
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// Create the actual bird
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var particleID = Particles.addParticle(properties);
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function moveBird(deltaTime) {
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// check to see if we've been running long enough that our bird is dead
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var nowTimeInSeconds = new Date().getTime() / 1000;
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if ((nowTimeInSeconds - startTimeInSeconds) >= birdLifetime) {
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print("our bird is dying, stop our script");
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Script.stop();
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return;
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}
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myPosition = MyAvatar.position;
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frame++;
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if (frame % 3 == 0) {
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// Tweeting behavior
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if (tweeting == 0) {
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if (Math.random() < CHANCE_OF_TWEETING) {
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//print("tweet!" + "\n");
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var options = new AudioInjectionOptions();
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options.position = position;
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options.volume = 0.75;
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Audio.playSound(tweet, options);
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tweeting = 10;
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}
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} else {
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tweeting -= 1;
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}
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if (Math.random() < CHANCE_OF_FLAPPING) {
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// Add a little upward impulse to our bird
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// TODO: Get velocity
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//
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var newProperties = {
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velocity: { x:0.0, y: Math.random() * BIRD_FLAP, z: 0.0 }
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};
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Particles.editParticle(particleID, newProperties);
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print("flap!");
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}
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// Moving behavior
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if (moving == false) {
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if (Math.random() < CHANCE_OF_MOVING) {
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targetPosition = randVector(-range, range);
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targetPosition = vPlus(targetPosition, myPosition);
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if (targetPosition.x < 0) {
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targetPosition.x = 0;
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}
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if (targetPosition.y < 0) {
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targetPosition.y = 0;
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}
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if (targetPosition.z < 0) {
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targetPosition.z = 0;
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}
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if (targetPosition.x > TREE_SCALE) {
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targetPosition.x = TREE_SCALE;
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}
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if (targetPosition.y > TREE_SCALE) {
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targetPosition.y = TREE_SCALE;
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}
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if (targetPosition.z > TREE_SCALE) {
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targetPosition.z = TREE_SCALE;
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}
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//printVector(position);
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moving = true;
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}
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}
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if (moving) {
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position = vInterpolate(position, targetPosition, 0.5);
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if (vLength(vMinus(position, targetPosition)) < (size / 5.0)) {
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moved = false;
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moving = false;
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} else {
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moved = true;
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}
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}
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if (moved || (tweeting > 0)) {
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if (tweeting > 0) {
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var newProperties = {
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position: position,
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radius : size * 1.5,
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color: { red: Math.random() * 255, green: 0, blue: 0 }
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};
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} else {
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var newProperties = {
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position: position,
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radius : size,
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color: { red: color.r, green: color.g, blue: color.b }
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};
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}
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Particles.editParticle(particleID, newProperties);
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moved = false;
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}
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}
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}
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// register the call back so it fires before each data send
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Script.update.connect(moveBird);
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222
examples/particleBirds.js
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222
examples/particleBirds.js
Normal file
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//
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// particleBirds.js
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// examples
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//
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// Copyright 2014 High Fidelity, Inc.
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//
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// This sample script creates a swarm of tweeting bird particles that fly around the avatar.
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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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// Normalizes a vector to unit length
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function vNormalize(v) {
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var length = vLength(v);
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var rval = { x: v.x / length, y: v.y / length, z: v.z / length };
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return rval;
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}
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// Multiply vector by scalar
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function vScalarMult(v, s) {
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var rval = { x: v.x * s, y: v.y * s, z: v.z * s };
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return rval;
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}
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function vLength(v) {
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return Math.sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
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}
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function printVector(v) {
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print(v.x + ", " + v.y + ", " + v.z + "\n");
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}
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// Create a random vector with individual lengths between a,b
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function randVector(a, b) {
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var rval = { x: a + Math.random() * (b - a), y: a + Math.random() * (b - a), z: a + Math.random() * (b - a) };
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return rval;
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}
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function vMinus(a, b) {
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var rval = { x: a.x - b.x, y: a.y - b.y, z: a.z - b.z };
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return rval;
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}
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function vPlus(a, b) {
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var rval = { x: a.x + b.x, y: a.y + b.y, z: a.z + b.z };
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return rval;
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}
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function vCopy(a, b) {
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a.x = b.x;
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a.y = b.y;
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a.z = b.z;
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return;
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}
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// Returns a vector which is fraction of the way between a and b
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function vInterpolate(a, b, fraction) {
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var rval = { x: a.x + (b.x - a.x) * fraction, y: a.y + (b.y - a.y) * fraction, z: a.z + (b.z - a.z) * fraction };
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return rval;
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}
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var startTimeInSeconds = new Date().getTime() / 1000;
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var birdLifetime = 20; // lifetime of the birds in seconds!
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var range = 1.0; // Over what distance in meters do you want the flock to fly around
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var frame = 0;
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var moving = false;
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var tweeting = 0;
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var CHANCE_OF_MOVING = 0.1;
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var CHANCE_OF_TWEETING = 0.05;
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var BIRD_GRAVITY = -0.1;
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var BIRD_FLAP_SPEED = 10.0;
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var BIRD_VELOCITY = 0.5;
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var myPosition = MyAvatar.position;
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var targetPosition = myPosition;
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var range = 1.0; // Distance around avatar where I can move
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var particleID;
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var birdParticleIDs = [];
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var birdTweetSounds = [];
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var previousFlapOffsets = [];
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function addBird()
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{
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// Decide what kind of bird we are
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var tweet;
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var color;
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var size;
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var which = Math.random();
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if (which < 0.2) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/bushtit_1.raw");
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color = { red: 100, green: 50, blue: 120 };
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size = 0.08;
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} else if (which < 0.4) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/rosyfacedlovebird.raw");
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color = { red: 100, green: 150, blue: 75 };
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size = 0.09;
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} else if (which < 0.6) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/saysphoebe.raw");
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color = { red: 84, green: 121, blue: 36 };
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size = 0.05;
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} else if (which < 0.8) {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/mexicanWhipoorwill.raw");
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color = { red: 23, green: 197, blue: 230 };
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size = 0.12;
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} else {
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tweet = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/Animals/westernscreechowl.raw");
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color = { red: 50, green: 67, blue: 144 };
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size = 0.15;
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}
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var properties = {
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lifetime: birdLifetime,
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position: randVector(-range, range),
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velocity: { x: 0, y: 0, z: 0 },
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gravity: { x: 0, y: BIRD_GRAVITY, z: 0 },
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radius : size,
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color: color
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};
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previousFlapOffsets.push(0.0);
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birdTweetSounds.push(tweet);
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birdParticleIDs.push(Particles.addParticle(properties));
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}
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var numBirds = 5;
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// Generate the birds
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for (var i = 0; i < numBirds; i++) {
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addBird();
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}
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// Main update function
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function updateBirds(deltaTime) {
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// Check to see if we've been running long enough that our birds are dead
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var nowTimeInSeconds = new Date().getTime() / 1000;
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if ((nowTimeInSeconds - startTimeInSeconds) >= birdLifetime) {
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print("our birds are dying, stop our script");
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Script.stop();
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return;
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}
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frame++;
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// Only update every third frame
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if ((frame % 3) == 0) {
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myPosition = MyAvatar.position;
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// Update all the birds
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for (var i = 0; i < numBirds; i++) {
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particleID = birdParticleIDs[i];
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var properties = Particles.getParticleProperties(particleID);
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// Tweeting behavior
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if (tweeting == 0) {
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if (Math.random() < CHANCE_OF_TWEETING) {
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var options = new AudioInjectionOptions();
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options.position = properties.position;
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options.volume = 0.75;
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Audio.playSound(birdTweetSounds[i], options);
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tweeting = 10;
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}
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} else {
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tweeting -= 1;
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}
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// Begin movement by getting a target
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if (moving == false) {
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if (Math.random() < CHANCE_OF_MOVING) {
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targetPosition = vPlus(randVector(-range, range), myPosition);
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if (targetPosition.x < 0) {
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targetPosition.x = 0;
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}
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if (targetPosition.y < 0) {
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targetPosition.y = 0;
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}
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if (targetPosition.z < 0) {
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targetPosition.z = 0;
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}
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if (targetPosition.x > TREE_SCALE) {
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targetPosition.x = TREE_SCALE;
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}
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if (targetPosition.y > TREE_SCALE) {
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targetPosition.y = TREE_SCALE;
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}
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if (targetPosition.z > TREE_SCALE) {
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targetPosition.z = TREE_SCALE;
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}
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moving = true;
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}
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}
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// If we are moving, move towards the target
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if (moving) {
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var desiredVelocity = vMinus(targetPosition, properties.position);
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desiredVelocity = vScalarMult(vNormalize(desiredVelocity), BIRD_VELOCITY);
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properties.velocity = vInterpolate(properties.velocity, desiredVelocity, 0.2);
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// If we are near the target, we should get a new target
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if (vLength(vMinus(properties.position, targetPosition)) < (properties.radius / 5.0)) {
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moving = false;
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}
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}
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// Use a cosine wave offset to make it look like its flapping.
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var offset = Math.cos(nowTimeInSeconds * BIRD_FLAP_SPEED) * properties.radius;
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properties.position.y = properties.position.y + (offset - previousFlapOffsets[i]);
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// Change position relative to previous offset.
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previousFlapOffsets[i] = offset;
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// Update the particle
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Particles.editParticle(particleID, properties);
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}
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}
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}
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// register the call back so it fires before each data send
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Script.update.connect(updateBirds);
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