//
//  dice.js
//  examples
//
//  Created by Philip Rosedale on February 2, 2015
//  Copyright 2015 High Fidelity, Inc.
//
//  Press the dice button to throw some dice from the center of the screen. 
//  Change NUMBER_OF_DICE to change the number thrown (Yahtzee, anyone?) 
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

var isDice = false; 
var NUMBER_OF_DICE = 1; 
var dice = [];
var DIE_SIZE = 0.20;

var madeSound = true;   //  Set false at start of throw to look for collision

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

var rollSound = SoundCache.getSound(HIFI_PUBLIC_BUCKET + "sounds/dice/diceRoll.wav");

var INSUFFICIENT_PERMISSIONS_ERROR_MSG = "You do not have the necessary permissions to create new objects."

var screenSize = Controller.getViewportDimensions();

var BUTTON_SIZE = 32;
var PADDING = 3;

var offButton = Overlays.addOverlay("image", {
                    x: screenSize.x / 2 - BUTTON_SIZE,
                    y: screenSize.y- (BUTTON_SIZE + PADDING),
                    width: BUTTON_SIZE,
                    height: BUTTON_SIZE,
                    imageURL: HIFI_PUBLIC_BUCKET + "images/close.png",
                    color: { red: 255, green: 255, blue: 255},
                    alpha: 1
                });
var diceButton = Overlays.addOverlay("image", {
                    x: screenSize.x / 2 + PADDING,
                    y: screenSize.y - (BUTTON_SIZE + PADDING),
                    width: BUTTON_SIZE,
                    height: BUTTON_SIZE,
                    imageURL: HIFI_PUBLIC_BUCKET + "images/die.png",
                    color: { red: 255, green: 255, blue: 255},
                    alpha: 1
                });

var GRAVITY = -3.5;
var LIFETIME = 300;
// NOTE: angularVelocity is in radians/sec
var MAX_ANGULAR_SPEED = Math.PI;


function shootDice(position, velocity) {
    if (!Entities.canRez()) {
        Window.alert(INSUFFICIENT_PERMISSIONS_ERROR_MSG);
    } else {
        for (var i = 0; i < NUMBER_OF_DICE; i++) {
            dice.push(Entities.addEntity(
                { type: "Model",
                  modelURL: HIFI_PUBLIC_BUCKET + "models/props/Dice/goldDie.fbx",
                  position: position,  
                  velocity: velocity, 
                  rotation: Quat.fromPitchYawRollDegrees(Math.random() * 360, Math.random() * 360, Math.random() * 360),
                  angularVelocity: { x: Math.random() * MAX_ANGULAR_SPEED,
                                     y: Math.random() * MAX_ANGULAR_SPEED,
                                     z: Math.random() * MAX_ANGULAR_SPEED },
                  lifetime: LIFETIME,
                  gravity: {  x: 0, y: GRAVITY, z: 0 },
                  shapeType: "box",
                  collisionsWillMove: true
                }));
            position = Vec3.sum(position, Vec3.multiply(DIE_SIZE, Vec3.normalize(Quat.getRight(Camera.getOrientation()))));
        }
    }
}

function deleteDice() {
    while(dice.length > 0) {
        Entities.deleteEntity(dice.pop()); 
    }
}

function entityCollisionWithEntity(entity1, entity2, collision) {
    if (!madeSound) {
        // Is it one of our dice? 
        for (var i = 0; i < dice.length; i++) {
            if (!dice[i].isKnownID) {
                dice[i] = Entities.identifyEntity(dice[i]);
            }
            if ((entity1.id == dice[i].id) || (entity2.id == dice[i].id)) {
                madeSound = true;
                Audio.playSound(rollSound, { position: collision.contactPoint });
            }
        }
        
    }
}

function mousePressEvent(event) {
    var clickedText = false;
    var clickedOverlay = Overlays.getOverlayAtPoint({x: event.x, y: event.y});
    if (clickedOverlay == offButton) {
        Script.stop();
    } else if (clickedOverlay == diceButton) {
        var HOW_HARD = 2.0;
        var position = Vec3.sum(Camera.getPosition(), Quat.getFront(Camera.getOrientation()));
        var velocity = Vec3.multiply(HOW_HARD, Quat.getFront(Camera.getOrientation()));
        shootDice(position, velocity); 
        madeSound = false; 
    } 
}

function scriptEnding() {
    deleteDice();
    Overlays.deleteOverlay(offButton);
    Overlays.deleteOverlay(diceButton);
   
}

Entities.entityCollisionWithEntity.connect(entityCollisionWithEntity);
Controller.mousePressEvent.connect(mousePressEvent);
Script.scriptEnding.connect(scriptEnding);