Add initial client<-->server RPC
This commit is contained in:
Micah Allen
parent
1edbf7ffa4
commit
dc0d914b27
10
package.json
10
package.json
@ -1,20 +1,20 @@
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{
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"name": "rage-eventbus",
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"name": "rage-rpc",
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"version": "0.0.1",
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"description": "An asynchronous event bus for RAGE Multiplayer",
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"description": "An asynchronous RPC implementation for RAGE Multiplayer",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"repository": {
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"type": "git",
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"url": "git+https://github.com/micaww/rage-eventbus.git"
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"url": "git+https://github.com/micaww/rage-rpc.git"
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},
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"author": "micaww",
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"license": "ISC",
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"bugs": {
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"url": "https://github.com/micaww/rage-eventbus/issues"
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"url": "https://github.com/micaww/rage-rpc/issues"
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},
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"homepage": "https://github.com/micaww/rage-eventbus#readme",
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"homepage": "https://github.com/micaww/rage-rpc#readme",
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"dependencies": {}
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}
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178
src/index.js
178
src/index.js
@ -1,63 +1,163 @@
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const util = require('./util.js');
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//const isClient = !!mp.game.joaat;
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//const isCEF = !!mp.trigger;
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const environment = util.getEnvironment();
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if(!environment) throw 'Unknown RAGE environment';
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const PROCESS_EVENT = '__rpc:process';
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const rpc = {};
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const listeners = {};
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const pending = {};
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/*mp.events.add('rbus:process', (data) => {
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async function callProcedure(name, args, info){
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if(!listeners[name]) throw 'PROCEDURE_NOT_FOUND';
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return listeners[name](args, info);
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}
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});*/
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const processEvent = (...args) => {
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let data = args[0];
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if(environment === "server") data = args[1];
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data = util.parseData(data);
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const rbus = {};
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if(data.req){ // someone is trying to remotely call a procedure
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const info = {
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id: data.id,
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environment: data.env
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};
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if(environment === "server") info.player = args[0];
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const promise = callProcedure(data.name, data.args, info);
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switch(environment){
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case "server": {
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promise.then(res => {
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info.player.call(PROCESS_EVENT, [util.stringifyData({
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ret: 1,
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id: data.id,
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res
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})]);
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}).catch(err => {
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info.player.call(PROCESS_EVENT, [util.stringifyData({
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ret: 1,
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id: data.id,
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err
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})]);
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});
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break;
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}
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case "client": {
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promise.then(res => {
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mp.events.callRemote(PROCESS_EVENT, util.stringifyData({
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ret: 1,
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id: data.id,
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res
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}));
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}).catch(err => {
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mp.events.callRemote(PROCESS_EVENT, util.stringifyData({
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ret: 1,
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id: data.id,
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err
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}));
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});
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break;
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}
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}
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}else if(data.ret){ // a previously called remote procedure has returned
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const info = pending[data.id];
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if(info){
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if(data.err) info.reject(data.err);
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else info.resolve(data.res);
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pending[data.id] = undefined;
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}
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}
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};
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mp.events.add(PROCESS_EVENT, processEvent);
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/**
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* Register an event listener.
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* @param {string} eventName - The name of the event.
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* @param {function} cb - The event's callback. The return value will be sent back to the caller.
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* Register a procedure.
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* @param {string} name - The name of the procedure.
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* @param {function} cb - The procedure's callback. The return value will be sent back to the caller.
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*/
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rbus.on = (eventName, cb) => {
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if(!listeners[eventName]) listeners[eventName] = [];
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listeners[eventName].push(cb);
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rpc.register = (name, cb) => {
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listeners[name] = cb;
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};
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/**
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* Unregister an event listener.
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* @param {string} eventName - The name of the event.
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* @param {function} cb - The callback that was registered with `on`.
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* Unregister a procedure.
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* @param {string} name - The name of the procedure.
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*/
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rbus.off = (eventName, cb) => {
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if(!listeners[eventName]) return;
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listeners[eventName] = listeners[eventName].filter(listener => listener !== cb);
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rpc.unregister = (name) => {
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listeners[name] = undefined;
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};
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/**
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* Calls a local event listener.
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* @param {string} eventName - The name of the event.
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* @returns {Promise} - The result from the local event listener.
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* Calls a local procedure.
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* @param {string} name - The name of the locally registered procedure.
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* @param args - Any parameters for the procedure.
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* @returns {Promise} - The result from the procedure.
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*/
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rbus.send = (eventName) => {
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if(!listeners[eventName] || !listeners[eventName].length) return Promise.reject('NO_LISTENERS');
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return Promise.resolve(listeners[eventName][0]());
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rpc.call = (name, args) => callProcedure(name, args, { environment });
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/**
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* Calls a remote procedure registered on the server.
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* @param {string} name - The name of the registered procedure.
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* @param args - Any parameters for the procedure.
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* @returns {Promise} - The result from the procedure.
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*/
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rpc.callServer = (name, args) => {
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switch(environment){
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case "server": {
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return rpc.call(name, args);
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}
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case "client": {
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const id = util.uid();
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return new Promise((resolve, reject) => {
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pending[id] = {
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resolve,
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reject
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};
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mp.events.callRemote(PROCESS_EVENT, util.stringifyData({
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req: 1,
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id,
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name,
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env: environment,
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args
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}));
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});
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}
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}
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};
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/**
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* Calls a remote event listener residing on the server.
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* @param {string} eventName - The name of the event.
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* @returns {Promise} - The result from the remote event listener.
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* Calls a remote procedure registered on the client.
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* @param player - The player to call the procedure on.
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* @param {string} name - The name of the registered procedure.
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* @param args - Any parameters for the procedure.
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* @returns {Promise} - The result from the procedure.
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*/
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rbus.sendServer = (eventName) => {
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rpc.callClient = (player, name, args) => {
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switch(environment){
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case "client": {
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if(player === mp.players.local) return rpc.call(name, args);
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else return Promise.reject('Only the server can RPC to other clients.');
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}
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case "server": {
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const id = util.uid();
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return new Promise((resolve, reject) => {
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pending[id] = {
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resolve,
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reject
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};
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player.call(PROCESS_EVENT, [util.stringifyData({
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req: 1,
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id,
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name,
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env: environment,
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args
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})]);
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});
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}
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}
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};
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/**
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* Calls a remote event listener residing on the client.
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* @param player - The player to send to
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* @param {string} eventName - The name of the event
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* @returns {Promise} - The result from the remote event listener
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*/
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rbus.sendClient = (player, eventName) => {
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};
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module.exports = rbus;
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module.exports = rpc;
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19
src/util.js
19
src/util.js
@ -3,9 +3,24 @@ const util = {};
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util.uid = () => {
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let firstPart = (Math.random() * 46656) | 0;
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let secondPart = (Math.random() * 46656) | 0;
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firstPart = ("000" + firstPart.toString(36)).slice(-3);
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secondPart = ("000" + secondPart.toString(36)).slice(-3);
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firstPart = ('000' + firstPart.toString(36)).slice(-3);
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secondPart = ('000' + secondPart.toString(36)).slice(-3);
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return firstPart + secondPart;
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};
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util.getEnvironment = () => {
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if(!mp) return undefined;
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if(mp.joaat) return 'server';
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else if(mp.game && mp.game.joaat) return 'client';
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else if(mp.trigger) return 'cef';
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};
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util.stringifyData = (data) => {
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return JSON.stringify(data);
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};
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util.parseData = (data) => {
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return JSON.parse(data);
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};
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module.exports = util;
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