//
//  tuscanyfountain.js
//  examples
//
//  Created by Philip Rosedale on December 16, 2014
//  Copyright 2014 High Fidelity, Inc.
//
//  Creates a fountain of blue spheres that shoot upward from a starting point and fall.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

var fountainCenter = { x: 2165.96, y: 1887.36, z: 3743.58 };

function newDroplet() {
    var LATERAL_VELOCITY = 0.9; 
    var UPWARD_VELOCITY = 1.5;
    var GRAVITY = -1.5;
    var DAMPING = 0.99; 
    var RADIUS = 0.07;
    var LIFETIME = 2.0;
    var radius = (Math.random() + 0.3) * RADIUS;
    var properties = { 
        type: "Sphere",
        position: fountainCenter, 
        dimensions: { x: radius, y: radius, z: radius },
        gravity: { x: 0, y: GRAVITY, z: 0 },
        velocity: { x: (Math.random() - 0.5) * LATERAL_VELOCITY, y: (Math.random() + 0.25) * UPWARD_VELOCITY, z: (Math.random() - 0.5) * LATERAL_VELOCITY },
        damping: DAMPING,
        color: { red: 0, green: 0, blue : 100 + Math.random() * 155 },
        lifetime: LIFETIME,
        collisionsWillMove: false,
        ignoreCollisions: true
    };
    Entities.addEntity(properties);
}

function update(deltaTime) { 
    if (Math.random() < 0.1) {
        newDroplet();
    }
}

Script.update.connect(update);