content/hifi-content/caitlyn/production/treasureDetector/metalDetector.js

//
//  Treasure Detector
//
//  Created by Caitlyn Meeks on 09/21/2016
//  Copyright 2015 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
//
//  A treasure detector.  Attach this script to an entity parented to a joint on the base of a metal detector model.  It will
//  vary the sound and speed of a sound emitter based on proximity to any entity with isTreasure=True in its user data field.

// get the entity id in the preload


(function () {
    var entityID = null;
    var DETECTOR_POWERUP_SOUND = SoundCache.getSound("http://www.norteclabs.com/HF/resources/RolePull.wav");
    var DETECTOR_DETECTING_SOUND = SoundCache.getSound("http://hifi-content.s3.amazonaws.com/caitlyn/production/treasureDetector/detectorPeep.wav"); 
    var FOUND_SOUND = SoundCache.getSound("http://hifi-content.s3.amazonaws.com/caitlyn/production/treasureDetector/detectorFindsSomethin2.wav"); 
    var PING_SPEED_DEFAULT = 1000;
    var soundInjector;
    var foundSound_Injector;
    var scanSoundVolume = 0.1;
    var SEARCH_DISTANCE = 100.0;
    var closestTreasureDistance = 0;
    var pingSpeed = PING_SPEED_DEFAULT; // ping every 500 ms
    var pingVol;
    var treasureList = []; // A list of position coordinates for each treasure
    var jointIndex;
    var entProperties;
    var jointLocInObjectFrame;
    var detectorJointPos;


    this.preload = function(pEntityID) {
        entityID = pEntityID;
        print("CAITLYN preload("+entityID+")");
        entProperties = Entities.getEntityProperties(entityID);
        jointIndex = Entities.getJointIndex(entityID, "target_jnt");
        print("JOINT INDEX IS "+jointIndex);    
        jointLocInObjectFrame = Entities.getAbsoluteJointTranslationInObjectFrame(entityID, jointIndex);
        detectorJointPos = Vec3.sum(entProperties.position, Vec3.multiplyQbyV(entProperties.rotation, jointLocInObjectFrame));  
        
        var multiple_timer = Script.setInterval(function() {
            treasureList = [];          
            var foundEntitiesArray = Entities.findEntities(detectorJointPos, SEARCH_DISTANCE);  
            for (var i = 0; i < foundEntitiesArray.length; i++) { 
                var properties = Entities.getEntityProperties(foundEntitiesArray[i], ["EntityItemID", "userData", "position"]);
                if (!properties.userData) {
                    continue; 
                }
                try {
                    var treasureData = JSON.parse(properties.userData); 
                    var treasurePos = properties.position; 
                    if (treasureData.isTreasure == true) {
                        treasureList.push(treasurePos);
                    }
                } catch (e){}
            }
        }, 100);

        var treasureScan = Script.setInterval(function(){
            if (!treasureList) return; //targetSensorPos = Vec3.sum(Vec3.sum(detectorJointPos, {x: 0, y: 0.5, z: 0}), Vec3.multiply(0.5, Quat.getFront(Camera.getOrientation())));
            entProperties = Entities.getEntityProperties(entityID);
            jointIndex = Entities.getJointIndex(entityID, "target_jnt");//print("JOINT INDEX IS "+jointIndex);  
            jointLocInObjectFrame = Entities.getAbsoluteJointTranslationInObjectFrame(entityID, jointIndex);
            detectorJointPos = Vec3.sum(entProperties.position, Vec3.multiplyQbyV(entProperties.rotation, jointLocInObjectFrame));  
            for (var i = 0; i < treasureList.length; i++) {  
                var b = treasureList[i];
                var distance = Vec3.distance(detectorJointPos, b);
                if (distance > 100) {
                    distance = 100;
                }
                if (distance > closestTreasureDistance) {
                    closestTreasureDistance = distance;
                }
                var dn = 1 - distance / 100;
                pingVol = Math.pow(dn, 27);
                pingVol = Math.min(Math.max(0, pingVol), 0.75)
                pingSpeed = 1000 * (1 - Math.pow(dn, 25));  //print ("Detector distance is "+dn+" and volume should be "+pingVol);
            }
        }, 30);

        Script.setTimeout(playPingSound, pingSpeed);
    };

    this.unload = function() {
        stopFoundSound();
    };

     var playPingSound = function() {
        entProperties = Entities.getEntityProperties(entityID);
        jointIndex = Entities.getJointIndex(entityID, "target_jnt");
        jointLocInObjectFrame = Entities.getAbsoluteJointTranslationInObjectFrame(entityID, jointIndex);
        detectorJointPos = Vec3.sum(entProperties.position, Vec3.multiplyQbyV(entProperties.rotation, jointLocInObjectFrame));
        Audio.playSound(DETECTOR_DETECTING_SOUND, {
            position: detectorJointPos,
            volume: pingVol,
            localOnly: true
        });
        Script.setTimeout(playPingSound, pingSpeed);
		//print("PS: "+pingSpeed);
        if (pingSpeed < 35) {
            playFoundSound(detectorJointPos, pingVol); 
        }
        else {          
            stopFoundSound();
        }
    }

    function playFoundSound(sndPos, sndVol) {
        print("CAITLYN PLAY FOUND SOUND 1");
        //if (!foundSound_Injector) return;
        print("CAITLYN PLAY FOUND SOUND 2");
        if (foundSound_Injector !== undefined && foundSound_Injector.isPlaying) {
            foundSound_Injector.position = sndPos;
            return;
        }
        foundSound_Injector = Audio.playSound(FOUND_SOUND, {
            position: sndPos,
            volume: 1.0,
            loop: true,
            localOnly: true
        });
    }

    function stopFoundSound() {
        if (foundSound_Injector !== undefined && foundSound_Injector.isPlaying) {
            foundSound_Injector.stop();
            foundSound_Injector = undefined;
        }
    }
});