overte/examples/toys/basketball.js

//
//  basketball.js
//  examples
//
//  Created by Philip Rosedale on August 20, 2015
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

HIFI_PUBLIC_BUCKET = "http://s3.amazonaws.com/hifi-public/";

var basketballURL = HIFI_PUBLIC_BUCKET + "models/content/basketball2.fbx";
var collisionSoundURL = HIFI_PUBLIC_BUCKET + "sounds/basketball/basketball.wav";


var basketball = null;
var originalPosition = null;
var hasMoved = false; 

var GRAVITY = -9.8;
var DISTANCE_IN_FRONT_OF_ME = 1.0;
var START_MOVE = 0.01;
var DIAMETER = 0.30; 

function makeBasketball() { 
    var position = Vec3.sum(MyAvatar.position,
                        Vec3.multiplyQbyV(MyAvatar.orientation,
                      { x: 0, y: 0.0, z: -DISTANCE_IN_FRONT_OF_ME }));
    var rotation = Quat.multiply(MyAvatar.orientation,
                                  Quat.fromPitchYawRollDegrees(0, -90, 0));
    basketball = Entities.addEntity({
                                type: "Model",
                                position: position,
                                rotation: rotation,
                                dimensions: { x: DIAMETER,
                                              y: DIAMETER,
                                              z: DIAMETER },
                                collisionsWillMove: true,
                                collisionSoundURL: collisionSoundURL, 
                                modelURL: basketballURL,
                                restitution: 1.0,
                                linearDamping: 0.00001,
                                shapeType: "sphere"
                              });
    originalPosition = position; 
}

function update() {
    if (!basketball) {
        makeBasketball();
    } else {
        var newProperties = Entities.getEntityProperties(basketball);
        var moved = Vec3.length(Vec3.subtract(originalPosition, newProperties.position));
        if (!hasMoved && (moved > START_MOVE)) {
            hasMoved = true;
            Entities.editEntity(basketball, { gravity: {x: 0, y: GRAVITY, z: 0 }});
        }
        var MAX_DISTANCE = 10.0;
        var distance = Vec3.length(Vec3.subtract(MyAvatar.position, newProperties.position));
        if (distance > MAX_DISTANCE) {
            deleteStuff();
        }
    } 
}

function scriptEnding() {
    deleteStuff();
}

function deleteStuff() { 
    if (basketball != null) {
        Entities.deleteEntity(basketball);
        basketball = null;
        hasMoved = false; 
    }
}

Script.update.connect(update);
Script.scriptEnding.connect(scriptEnding);