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Added drumSticks example script

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Philip Rosedale 2014-01-22 08:38:45 -08:00
parent 70b3ea4482
commit 5d9cf23ac5
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examples/drumStick.js Normal file
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//
// This sample script watches your hydra hands and makes clapping sound when they come close together fast
//
function length(v) {
return Math.sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
}
function printVector(v) {
print(v.x + ", " + v.y + ", " + v.z + "\n");
}
function vMinus(a, b) {
var rval = { x: a.x - b.x, y: a.y - b.y, z: a.z - b.z };
return rval;
}
// First, load two percussion sounds to be used on the sticks
//var drum1 = new Sound("http://public.highfidelity.io/sounds/Colissions-hitsandslaps/Hit1.raw");
var drum1 = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/MusicalInstruments/drums/snare.raw");
var drum2 = new Sound("https://s3-us-west-1.amazonaws.com/highfidelity-public/sounds/MusicalInstruments/drums/snare.raw");
// State =
// 0 = not triggered
// 1 = triggered, waiting to stop to play sound
var state = new Array();
state[0] = 0;
state[1] = 0;
var strokeSpeed = new Array();
strokeSpeed[0] = 0.0;
strokeSpeed[1] = 0.0;
function checkSticks() {
// Set the location and other info for the sound to play
for (var palm = 0; palm < 2; palm++) {
var palmVelocity = Controller.getSpatialControlVelocity(palm * 2 + 1);
var speed = length(palmVelocity);
// lower trigger speed let you 'drum' more slowly.
const TRIGGER_SPEED = 0.30;
const STOP_SPEED = 0.01;
const GAIN = 0.5;
const AVERAGING = 0.2;
// Measure trailing average stroke speed to ultimately set volume
strokeSpeed[palm] = (1.0 - AVERAGING) * strokeSpeed[palm] + AVERAGING * (speed * GAIN);
if (state[palm] == 0) {
// Waiting for downward speed to indicate stroke
if ((palmVelocity.y < 0.0) && (strokeSpeed[palm] > TRIGGER_SPEED)) {
state[palm] = 1;
print("waiting\n");
}
} else if (state[palm] == 1) {
// Waiting for change in velocity direction or slowing to trigger drum sound
if ((palmVelocity.y > 0.0) || (speed < STOP_SPEED)) {
state[palm] = 0;
print("boom, volume = " + strokeSpeed[palm] + "\n");
var options = new AudioInjectionOptions();

options.position = Controller.getSpatialControlPosition(palm * 2 + 1);
if (strokeSpeed[palm] > 1.0) { strokeSpeed[palm] = 1.0; }
options.volume = strokeSpeed[palm];
if (palm == 0) {
Audio.playSound(drum1, options);
} else {
Audio.playSound(drum2, options);
}
}
}
}
}
// Connect a call back that happens every frame
Agent.willSendVisualDataCallback.connect(checkSticks);