"use strict"; //  nearGrabEntity.js////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html  /* global Script, Entities, MyAvatar, Controller, RIGHT_HAND, LEFT_HAND, getControllerJointIndex, enableDispatcherModule,   disableDispatcherModule, Messages, HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, TRIGGER_OFF_VALUE,   makeDispatcherModuleParameters, entityIsGrabbable, makeRunningValues, NEAR_GRAB_RADIUS, findGrabbableGroupParent, Vec3,   cloneEntity, entityIsCloneable, HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, BUMPER_ON_VALUE,   distanceBetweenPointAndEntityBoundingBox, getGrabbableData, getEnabledModuleByName, DISPATCHER_PROPERTIES, HMD,   NEAR_GRAB_DISTANCE*/ Script.include("/~/system/libraries/controllerDispatcherUtils.js");Script.include("/~/system/libraries/cloneEntityUtils.js");Script.include("/~/system/libraries/controllers.js"); (function() {     function NearGrabEntity(hand) {        this.hand = hand;        this.targetEntityID = null;        this.grabbing = false;        this.cloneAllowed = true;        this.grabID = null;         this.parameters = makeDispatcherModuleParameters(            500,            this.hand === RIGHT_HAND ? ["rightHand"] : ["leftHand"],            [],            100);         this.startGrab = function (targetProps) {            if (this.grabID) {                MyAvatar.releaseGrab(this.grabID);            }             var grabData = getGrabbableData(targetProps);             var handJointIndex;            if (HMD.mounted && HMD.isHandControllerAvailable() && grabData.grabFollowsController) {                handJointIndex = getControllerJointIndex(this.hand);            } else {                handJointIndex = MyAvatar.getJointIndex(this.hand === RIGHT_HAND ? "RightHand" : "LeftHand");            }             this.targetEntityID = targetProps.id;             var relativePosition = Entities.worldToLocalPosition(targetProps.position, MyAvatar.SELF_ID, handJointIndex);            var relativeRotation = Entities.worldToLocalRotation(targetProps.rotation, MyAvatar.SELF_ID, handJointIndex);            this.grabID = MyAvatar.grab(targetProps.id, handJointIndex, relativePosition, relativeRotation);        };         this.startNearGrabEntity = function (targetProps) {            Controller.triggerHapticPulse(HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, this.hand);             this.startGrab(targetProps);             var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];            Entities.callEntityMethod(targetProps.id, "startNearGrab", args);             Messages.sendMessage('Hifi-Object-Manipulation', JSON.stringify({                action: 'grab',                grabbedEntity: targetProps.id,                joint: this.hand === RIGHT_HAND ? "RightHand" : "LeftHand"            }));             this.grabbing = true;        };         this.endGrab = function () {            if (this.grabID) {                MyAvatar.releaseGrab(this.grabID);                this.grabID = null;            }        };         this.endNearGrabEntity = function () {            this.endGrab();             var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];            Entities.callEntityMethod(this.targetEntityID, "releaseGrab", args);            Messages.sendMessage('Hifi-Object-Manipulation', JSON.stringify({                action: 'release',                grabbedEntity: this.targetEntityID,                joint: this.hand === RIGHT_HAND ? "RightHand" : "LeftHand"            }));             this.grabbing = false;            this.targetEntityID = null;        };         this.getTargetProps = function (controllerData) {            // nearbyEntityProperties is already sorted by length from controller            var nearbyEntityProperties = controllerData.nearbyEntityProperties[this.hand];            var sensorScaleFactor = MyAvatar.sensorToWorldScale;            var nearGrabDistance = NEAR_GRAB_DISTANCE * sensorScaleFactor;            var nearGrabRadius = NEAR_GRAB_RADIUS * sensorScaleFactor;            for (var i = 0; i < nearbyEntityProperties.length; i++) {                var props = nearbyEntityProperties[i];                var grabPosition = controllerData.controllerLocations[this.hand].position; // Is offset from hand position.                // TODO: this function gives incorrect result now and needs to be fixed later                //var dist = distanceBetweenPointAndEntityBoundingBox(grabPosition, props);                var dist = 0;                var distance = Vec3.distance(grabPosition, props.position);                if ((dist > nearGrabDistance) ||                    (distance > nearGrabRadius)) { // Only smallish entities can be near grabbed.                    continue;                }                if (entityIsGrabbable(props) || entityIsCloneable(props)) {                    if (!entityIsCloneable(props)) {                        // if we've attempted to grab a non-cloneable child, roll up to the root of the tree                        var groupRootProps = findGrabbableGroupParent(controllerData, props);                        if (entityIsGrabbable(groupRootProps)) {                            return groupRootProps;                        }                    }                    return props;                }            }            return null;        };         this.isReady = function (controllerData, deltaTime) {            this.targetEntityID = null;            this.grabbing = false;             if (controllerData.triggerValues[this.hand] < TRIGGER_OFF_VALUE &&                controllerData.secondaryValues[this.hand] < TRIGGER_OFF_VALUE) {                this.cloneAllowed = true;                return makeRunningValues(false, [], []);            }             var scaleModuleName = this.hand === RIGHT_HAND ? "RightScaleEntity" : "LeftScaleEntity";            var scaleModule = getEnabledModuleByName(scaleModuleName);            if (scaleModule && (scaleModule.grabbedThingID || scaleModule.isReady(controllerData).active)) {                // we're rescaling -- don't start a grab.                return makeRunningValues(false, [], []);            }             var targetProps = this.getTargetProps(controllerData);            if (targetProps) {                this.targetEntityID = targetProps.id;                return makeRunningValues(true, [this.targetEntityID], []);            } else {                return makeRunningValues(false, [], []);            }        };         this.run = function (controllerData, deltaTime) {             if (this.grabbing) {                if (!controllerData.triggerClicks[this.hand] &&                    controllerData.secondaryValues[this.hand] < TRIGGER_OFF_VALUE) {                    this.endNearGrabEntity();                    return makeRunningValues(false, [], []);                }                 var props = controllerData.nearbyEntityPropertiesByID[this.targetEntityID];                if (!props) {                    props = Entities.getEntityProperties(this.targetEntityID, "type");                    if (!props) {                        // entity was deleted                        this.grabbing = false;                        this.targetEntityID = null;                        return makeRunningValues(false, [], []);                    }                }                 var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];                Entities.callEntityMethod(this.targetEntityID, "continueNearGrab", args);            } else {                // still searching                var readiness = this.isReady(controllerData);                if (!readiness.active) {                    return readiness;                }                if (controllerData.triggerClicks[this.hand] || controllerData.secondaryValues[this.hand] > BUMPER_ON_VALUE) {                    // switch to grab                    var targetProps = this.getTargetProps(controllerData);                    var targetCloneable = entityIsCloneable(targetProps);                     if (targetCloneable) {                        if (this.cloneAllowed) {                            var cloneID = cloneEntity(targetProps);                            if (cloneID !== null) {                                var cloneProps = Entities.getEntityProperties(cloneID, DISPATCHER_PROPERTIES);                                cloneProps.id = cloneID;                                this.grabbing = true;                                this.targetEntityID = cloneID;                                this.startNearGrabEntity(cloneProps);                                this.cloneAllowed = false; // prevent another clone call until inputs released                            }                        }                    } else if (targetProps) {                        this.grabbing = true;                        this.startNearGrabEntity(targetProps);                    }                }            }             return makeRunningValues(true, [this.targetEntityID], []);        };         this.cleanup = function () {            if (this.targetEntityID) {                this.endNearGrabEntity();            }        };    }     var leftNearGrabEntity = new NearGrabEntity(LEFT_HAND);    var rightNearGrabEntity = new NearGrabEntity(RIGHT_HAND);     enableDispatcherModule("LeftNearGrabEntity", leftNearGrabEntity);    enableDispatcherModule("RightNearGrabEntity", rightNearGrabEntity);     function cleanup() {        leftNearGrabEntity.cleanup();        rightNearGrabEntity.cleanup();        disableDispatcherModule("LeftNearGrabEntity");        disableDispatcherModule("RightNearGrabEntity");    }    Script.scriptEnding.connect(cleanup);}());