overte/scripts/system/libraries/cloneEntityUtils.js

"use strict";

//  cloneEntity.js
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html

Script.include("/~/system/controllers/controllerDispatcherUtils.js");


// Object assign  polyfill
if (typeof Object.assign != 'function') {
    Object.assign = function(target, varArgs) {
        if (target === null) {
            throw new TypeError('Cannot convert undefined or null to object');
        }
        var to = Object(target);
        for (var index = 1; index < arguments.length; index++) {
            var nextSource = arguments[index];
            if (nextSource !== null) {
                for (var nextKey in nextSource) {
                    if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                        to[nextKey] = nextSource[nextKey];
                    }
                }
            }
        }
        return to;
    };
}

entityIsCloneable = function(props) {
    if (props) {
        var grabbableData = getGrabbableData(props);
        return grabbableData.cloneable;
    }

    return false;
}


cloneEntity = function(cloneableProps, worldEntityProps) {
    if (!cloneableProps) {
        return null;
    }
    
    // we need all the properties, for this
    cloneableProps = Entities.getEntityProperties(cloneableProps.id);

    var count = 0;
    worldEntityProps.forEach(function(itemWE) {
        if (itemWE.name.indexOf('-clone-' + cloneableProps.id) !== -1) {
            count++;
        }
    });
    
    var grabInfo = getGrabbableData(cloneableProps);

    var limit = grabInfo.cloneLimit ? grabInfo.cloneLimit : 0;
    if (count >= limit && limit !== 0) {
        return null;
    }
    
    cloneableProps.name = cloneableProps.name + '-clone-' + cloneableProps.id;
    var lifetime = grabInfo.cloneLifetime ? grabInfo.cloneLifetime : 300;
    var dynamic = grabInfo.cloneDynamic ? grabInfo.cloneDynamic : false;
    var cUserData = Object.assign({}, cloneableProps.userData);
    var cProperties = Object.assign({}, cloneableProps);

    try {
        delete cUserData.grabbableKey.cloneLifetime;
        delete cUserData.grabbableKey.cloneable;
        delete cUserData.grabbableKey.cloneDynamic;
        delete cUserData.grabbableKey.cloneLimit;
        delete cProperties.id;
    } catch(e) {
    }

    cProperties.dynamic = dynamic;
    cProperties.locked = false;
    if (!cUserData.grabbableKey) {
        cUserData.grabbableKey = {};
    }
    cUserData.grabbableKey.triggerable = true;
    cUserData.grabbableKey.grabbable = true;
    cProperties.lifetime = lifetime;
    cProperties.userData = JSON.stringify(cUserData);
    
    var cloneID = Entities.addEntity(cProperties);
    return cloneID;
}