node-minecraft-protocol/src/packets.js

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var assert = require("assert");
module.exports = {readPackets: readPackets};
function readPackets(packets, states) {
var packetFields = {};
var packetNames = {};
var packetIds = {};
var packetStates = {toClient: {}, toServer: {}};
for(var stateName in states) {
var state = states[stateName];
packetFields[state] = {toClient: [], toServer: []};
packetNames[state] = {toClient: [], toServer: []};
packetIds[state] = {toClient: [], toServer: []};
['toClient', 'toServer'].forEach(function(direction) {
for(var name in packets[state][direction]) {
var info = packets[state][direction][name];
var id = parseInt(info.id);
var fields = info.fields;
assert(id !== undefined, 'missing id for packet ' + name);
assert(fields !== undefined, 'missing fields for packet ' + name);
assert(!packetNames[state][direction].hasOwnProperty(id), 'duplicate packet id ' + id + ' for ' + name);
assert(!packetIds[state][direction].hasOwnProperty(name), 'duplicate packet name ' + name + ' for ' + id);
assert(!packetFields[state][direction].hasOwnProperty(name), 'duplicate packet id ' + id + ' for ' + name);
assert(!packetStates[direction].hasOwnProperty(name), 'duplicate packet name ' + name + ' for ' + id + ', must be unique across all states');
packetNames[state][direction][id] = name;
packetIds[state][direction][name] = id;
packetFields[state][direction][name] = fields;
packetStates[direction][name] = state;
}
});
}
return {
packetFields: packetFields,
packetNames: packetNames,
packetIds: packetIds,
packetStates: packetStates
};
}