////  speechControl.js//  examples////  Created by Ryan Huffman on 07/31/14.//  Copyright 2014 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// var ACCELERATION = 80;var STEP_DURATION = 1.0; // Duration of a step command in secondsvar TURN_DEGREES = 90;var SLIGHT_TURN_DEGREES = 45;var TURN_AROUND_DEGREES = 180;var TURN_RATE = 90; // Turn rate in degrees per second  /*****************************************************************************//** COMMANDS *****************************************************************/var CMD_MOVE_FORWARD = "Move forward";var CMD_MOVE_BACKWARD = "Move backward";var CMD_MOVE_UP = "Move up";var CMD_MOVE_DOWN = "Move down";var CMD_MOVE_LEFT = "Move left";var CMD_MOVE_RIGHT = "Move right"; var CMD_STEP_FORWARD = "Step forward";var CMD_STEP_BACKWARD = "Step backward";var CMD_STEP_LEFT = "Step left";var CMD_STEP_RIGHT = "Step right";var CMD_STEP_UP = "Step up";var CMD_STEP_DOWN = "Step down"; var CMD_TURN_LEFT = "Turn left";var CMD_TURN_SLIGHT_LEFT = "Turn slight left";var CMD_TURN_RIGHT = "Turn right";var CMD_TURN_SLIGHT_RIGHT = "Turn slight right";var CMD_TURN_AROUND = "Turn around"; var CMD_STOP = "Stop"; var CMD_SHOW_COMMANDS = "Show commands"; var MOVE_COMMANDS = [    CMD_MOVE_FORWARD,    CMD_MOVE_BACKWARD,    CMD_MOVE_UP,    CMD_MOVE_DOWN,    CMD_MOVE_LEFT,    CMD_MOVE_RIGHT,]; var STEP_COMMANDS = [    CMD_STEP_FORWARD,    CMD_STEP_BACKWARD,    CMD_STEP_UP,    CMD_STEP_DOWN,    CMD_STEP_LEFT,    CMD_STEP_RIGHT,]; var TURN_COMMANDS = [    CMD_TURN_LEFT,    CMD_TURN_SLIGHT_LEFT,    CMD_TURN_RIGHT,    CMD_TURN_SLIGHT_RIGHT,    CMD_TURN_AROUND,]; var OTHER_COMMANDS = [    CMD_STOP,    CMD_SHOW_COMMANDS,]; var ALL_COMMANDS = []    .concat(MOVE_COMMANDS)    .concat(STEP_COMMANDS)    .concat(TURN_COMMANDS)    .concat(OTHER_COMMANDS); /** END OF COMMANDS **********************************************************//*****************************************************************************/  var currentCommandFunc = null; function handleCommandRecognized(command) {    if (MOVE_COMMANDS.indexOf(command) > -1 || STEP_COMMANDS.indexOf(command) > -1) {        // If this is a STEP_* command, we will want to countdown the duration        // of time to move.  MOVE_* commands don't stop.        var timeRemaining = MOVE_COMMANDS.indexOf(command) > -1 ? 0 : STEP_DURATION;        var accel = { x: 0, y: 0, z: 0 };         if (command == CMD_MOVE_FORWARD || command == CMD_STEP_FORWARD) {            accel = { x: 0, y: 0, z: 1 };        } else if (command == CMD_MOVE_BACKWARD || command == CMD_STEP_BACKWARD) {            accel = { x: 0, y: 0, z: -1 };        } else if (command === CMD_MOVE_UP || command == CMD_STEP_UP) {            accel = { x: 0, y: 1, z: 0 };        } else if (command == CMD_MOVE_DOWN || command == CMD_STEP_DOWN) {            accel = { x: 0, y: -1, z: 0 };        } else if (command == CMD_MOVE_LEFT || command == CMD_STEP_LEFT) {            accel = { x: -1, y: 0, z: 0 };        } else if (command == CMD_MOVE_RIGHT || command == CMD_STEP_RIGHT) {            accel = { x: 1, y: 0, z: 0 };        }         currentCommandFunc = function(dt) {            if (timeRemaining > 0 && dt >= timeRemaining) {                dt = timeRemaining;            }             var headOrientation = MyAvatar.headOrientation;            var front = Quat.getFront(headOrientation);            var right = Quat.getRight(headOrientation);            var up = Quat.getUp(headOrientation);             var thrust = Vec3.multiply(front, accel.z * ACCELERATION);            thrust = Vec3.sum(thrust, Vec3.multiply(right, accel.x * ACCELERATION));            thrust = Vec3.sum(thrust, Vec3.multiply(up, accel.y * ACCELERATION));            MyAvatar.addThrust(thrust);             if (timeRemaining > 0) {                timeRemaining -= dt;                return timeRemaining > 0;            }             return true;        };    } else if (TURN_COMMANDS.indexOf(command) > -1) {        var degreesRemaining;        var sign;        if (command == CMD_TURN_LEFT) {            sign = 1;            degreesRemaining = TURN_DEGREES;        } else if (command == CMD_TURN_RIGHT) {            sign = -1;            degreesRemaining = TURN_DEGREES;        } else if (command == CMD_TURN_SLIGHT_LEFT) {            sign = 1;            degreesRemaining = SLIGHT_TURN_DEGREES;        } else if (command == CMD_TURN_SLIGHT_RIGHT) {            sign = -1;            degreesRemaining = SLIGHT_TURN_DEGREES;        } else if (command == CMD_TURN_AROUND) {            sign = 1;            degreesRemaining = TURN_AROUND_DEGREES;        }        currentCommandFunc = function(dt) {            // Determine how much to turn by            var turnAmount = TURN_RATE * dt;            if (turnAmount > degreesRemaining) {                turnAmount = degreesRemaining;            }             // Apply turn            var orientation = MyAvatar.orientation;            var deltaOrientation = Quat.fromPitchYawRollDegrees(0, sign * turnAmount, 0);            MyAvatar.orientation = Quat.multiply(orientation, deltaOrientation);             degreesRemaining -= turnAmount;            return turnAmount > 0;        }    } else if (command == CMD_STOP) {        currentCommandFunc = null;    } else if (command == CMD_SHOW_COMMANDS) {        var msg = "";        for (var i = 0; i < ALL_COMMANDS.length; i++) {            msg += ALL_COMMANDS[i] + "\n";        }        Window.alert(msg);    }} function update(dt) {    if (currentCommandFunc) {        if (currentCommandFunc(dt) === false) {            currentCommandFunc = null;        }    }} function setup() {    for (var i = 0; i < ALL_COMMANDS.length; i++) {        SpeechRecognizer.addCommand(ALL_COMMANDS[i]);    }} function scriptEnding() {    for (var i = 0; i < ALL_COMMANDS.length; i++) {        SpeechRecognizer.removeCommand(ALL_COMMANDS[i]);    }} Script.scriptEnding.connect(scriptEnding);Script.update.connect(update);SpeechRecognizer.commandRecognized.connect(handleCommandRecognized); setup();