@dcl/ecs
Version:
Decentraland ECS
53 lines (52 loc) • 1.84 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.dataCompare = exports.CrdtUtils = void 0;
var CrdtUtils;
(function (CrdtUtils) {
let SynchronizedEntityType;
(function (SynchronizedEntityType) {
// synchronizes entities with the NetworkSynchronized component only, used for networked games
SynchronizedEntityType[SynchronizedEntityType["NETWORKED"] = 0] = "NETWORKED";
// synchronizes entities needed by the renderer
SynchronizedEntityType[SynchronizedEntityType["RENDERER"] = 1] = "RENDERER";
})(SynchronizedEntityType = CrdtUtils.SynchronizedEntityType || (CrdtUtils.SynchronizedEntityType = {}));
})(CrdtUtils = exports.CrdtUtils || (exports.CrdtUtils = {}));
exports.default = CrdtUtils;
/**
* Compare raw data.
* @public
* @returns 0 if is the same data, 1 if a > b, -1 if b > a
*/
function dataCompare(a, b) {
// At reference level
if (a === b)
return 0;
if (a === null && b !== null)
return -1;
if (a !== null && b === null)
return 1;
if (a instanceof Uint8Array && b instanceof Uint8Array) {
const lengthDifference = a.byteLength - b.byteLength;
if (lengthDifference !== 0) {
return lengthDifference > 0 ? 1 : -1;
}
let res;
for (let i = 0, n = a.byteLength; i < n; i++) {
res = a[i] - b[i];
if (res !== 0) {
return res > 0 ? 1 : -1;
}
}
// the data is exactly the same
return 0;
}
if (typeof a === 'string') {
const lengthDifference = a.length - b.length;
if (lengthDifference !== 0) {
return lengthDifference > 0 ? 1 : -1;
}
return a.localeCompare(b);
}
return a > b ? 1 : -1;
}
exports.dataCompare = dataCompare;