//  chair.js////  Restrictions right now:  //  Chair objects need to be set as not colliding with avatars, so that they pull avatar //  avatar into collision with them.  Also they need to be at or above standing height //  (like a stool).  //    //  Copyright 2016 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// (function(){         var CHECK_INTERVAL_MSECS = 250;         //  When sitting, check for need to stand up    var SETTINGS_INTERVAL_MSECS = 1000;     //  Periodically check user data for updates     var DEFAULT_SIT_DISTANCE = 1.0;         //  How far away from the chair can you sit?    var HYSTERESIS = 1.1;     var sitTarget = { x: 0, y: 0, z: 0 };   //  Offset where your butt should go relative                                            //  to the object's center.    var SITTING = 0;    var STANDING = 1;     var state = STANDING;    var sitDistance = DEFAULT_SIT_DISTANCE;     var entity;    var props;    var checkTimer = false;    var settingsTimer = false;    var sitting = false;     var _this;        var WANT_DEBUG = false;    function debugPrint(string) {        if (WANT_DEBUG) {            print(string);        }    }     function howFarAway(position) {        return Vec3.distance(MyAvatar.position, position);    }     function isSeatOpen(position, distance) {        closest = true;        AvatarList.getAvatarIdentifiers().forEach(function(avatarSessionUUID) {            var avatar = AvatarList.getAvatar(avatarSessionUUID);            if (avatarSessionUUID && Vec3.distance(avatar.position, position) < distance) {                debugPrint("Seat Occupied!");                closest = false;            }         });        return closest;    }     function enterSitPose() {        var rot;        var UPPER_LEG_ANGLE = 240;        var LOWER_LEG_ANGLE = -80;        rot = Quat.safeEulerAngles(MyAvatar.getJointRotation("RightUpLeg"));        MyAvatar.setJointData("RightUpLeg", Quat.fromPitchYawRollDegrees(UPPER_LEG_ANGLE, rot.y, rot.z), MyAvatar.getJointTranslation("RightUpLeg"));        rot = Quat.safeEulerAngles(MyAvatar.getJointRotation("RightLeg"));        MyAvatar.setJointData("RightLeg", Quat.fromPitchYawRollDegrees(LOWER_LEG_ANGLE, rot.y, rot.z), MyAvatar.getJointTranslation("RightLeg"));        rot = Quat.safeEulerAngles(MyAvatar.getJointRotation("LeftUpLeg"));        MyAvatar.setJointData("LeftUpLeg", Quat.fromPitchYawRollDegrees(UPPER_LEG_ANGLE, rot.y, rot.z), MyAvatar.getJointTranslation("LeftUpLeg"));        rot = Quat.safeEulerAngles(MyAvatar.getJointRotation("LeftLeg"));        MyAvatar.setJointData("LeftLeg", Quat.fromPitchYawRollDegrees(LOWER_LEG_ANGLE, rot.y, rot.z), MyAvatar.getJointTranslation("LeftLeg"));    }     function leaveSitPose() {         MyAvatar.clearJointData("RightUpLeg");         MyAvatar.clearJointData("LeftUpLeg");         MyAvatar.clearJointData("RightLeg");         MyAvatar.clearJointData("LeftLeg");    }     function sitDown(position, rotation) {        var eulers = Quat.safeEulerAngles(MyAvatar.orientation);        eulers.y = Quat.safeEulerAngles(rotation).y;        MyAvatar.position = Vec3.sum(position, Vec3.multiplyQbyV(props.rotation, sitTarget));        MyAvatar.orientation = Quat.fromPitchYawRollDegrees(eulers.x, eulers.y, eulers.z);         enterSitPose();        state = SITTING;    }     this.preload = function(entityID) {         //  Load the sound and range from the entity userData fields, and note the position of the entity.        debugPrint("chair preload");        entity = entityID;        _this = this;        settingsTimer = Script.setInterval(this.checkSettings, SETTINGS_INTERVAL_MSECS);    };      this.maybeStand = function() {        props = Entities.getEntityProperties(entity, [ "position", "rotation" ]);        // First, check if the entity is far enough away to not need to do anything with it        var howFar = howFarAway(props.position);        if ((state === SITTING) && (howFar > sitDistance * HYSTERESIS)) {            leaveSitPose();            Script.clearInterval(checkTimer);            checkTimer = null;            state = STANDING;            debugPrint("Standing");        }     }     this.clickDownOnEntity = function(entityID, mouseEvent) {         //  If entity is clicked, sit        props = Entities.getEntityProperties(entity, [ "position", "rotation" ]);        if ((state === STANDING) && isSeatOpen(props.position, sitDistance)) {            sitDown(props.position, props.rotation);            checkTimer = Script.setInterval(this.maybeStand, CHECK_INTERVAL_MSECS);            debugPrint("Sitting from mouse click");        }    }     this.startFarTrigger = function() {        //  If entity is far clicked, sit        props = Entities.getEntityProperties(entity, [ "position", "rotation" ]);        if ((state === STANDING) && isSeatOpen(props.position, sitDistance)) {            sitDown(props.position, props.rotation);            checkTimer = Script.setInterval(this.maybeStand, CHECK_INTERVAL_MSECS);            debugPrint("Sitting from far trigger");        }    }     this.checkSettings = function() {        var dataProps = Entities.getEntityProperties(entity, [ "userData" ]);        if (dataProps.userData) {            var data = JSON.parse(dataProps.userData);            if (data.sitDistance) {                if (!(sitDistance === data.sitDistance)) {                    debugPrint("Read new sit distance: " + data.sitDistance);                 }                sitDistance = data.sitDistance;            }            if (data.sitTarget) {                if (data.sitTarget.y && (data.sitTarget.y != sitTarget.y)) {                    debugPrint("Read new sitTarget.y: " + data.sitTarget.y);                     sitTarget.y = data.sitTarget.y;                }                if (data.sitTarget.x && (data.sitTarget.x != sitTarget.x)) {                    debugPrint("Read new sitTarget.x: " + data.sitTarget.x);                     sitTarget.x = data.sitTarget.x;                }                if (data.sitTarget.z && (data.sitTarget.z != sitTarget.z)) {                    debugPrint("Read new sitTarget.z: " + data.sitTarget.z);                     sitTarget.z = data.sitTarget.z;                }            }        }    }     this.unload = function(entityID) {         debugPrint("chair unload");        if (checkTimer) {            Script.clearInterval(checkTimer);        }        if (settingsTimer) {            Script.clearInterval(settingsTimer);        }    };  })