overte/script-archive/example/avatarcontrol/graspHands.js
2016-04-26 11:18:22 -07:00

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JavaScript

// graspHands.js
//
// Created by James B. Pollack @imgntn -- 11/19/2015
// Copyright 2015 High Fidelity, Inc.
//
// Shows how to use the animation API to grasp an Avatar's hands.
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//choose a hand. set it programatically if you'd like
var handToGrasp = 'LEFT_HAND';
//this is our handler, where we do the actual work of changing animation settings
function graspHand(animationProperties) {
var result = {};
//full alpha on overlay for this hand
//set grab to true
//set idle to false
//full alpha on the blend btw open and grab
if (handToGrasp === 'RIGHT_HAND') {
result['rightHandOverlayAlpha'] = 1.0;
result['isRightHandGrab'] = true;
result['isRightHandIdle'] = false;
result['rightHandGrabBlend'] = 1.0;
} else if (handToGrasp === 'LEFT_HAND') {
result['leftHandOverlayAlpha'] = 1.0;
result['isLeftHandGrab'] = true;
result['isLeftHandIdle'] = false;
result['leftHandGrabBlend'] = 1.0;
}
//return an object with our updated settings
return result;
}
//keep a reference to this so we can clear it
var handler;
//register our handler with the animation system
function startHandGrasp() {
if (handToGrasp === 'RIGHT_HAND') {
handler = MyAvatar.addAnimationStateHandler(graspHand, ['isRightHandGrab']);
} else if (handToGrasp === 'LEFT_HAND') {
handler = MyAvatar.addAnimationStateHandler(graspHand, ['isLeftHandGrab']);
}
}
function endHandGrasp() {
// Tell the animation system we don't need any more callbacks.
MyAvatar.removeAnimationStateHandler(handler);
}
//make sure to clean this up when the script ends so we don't get stuck.
Script.scriptEnding.connect(function() {
Script.clearInterval(graspInterval);
endHandGrasp();
})
//set an interval and toggle grasping
var isGrasping = false;
var graspInterval = Script.setInterval(function() {
if (isGrasping === false) {
startHandGrasp();
isGrasping = true;
} else {
endHandGrasp();
isGrasping = false
}
}, 1000)