Parker2991/node-minecraft-protocol
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all writers finished and tested. closes

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This commit is contained in:
Andrew Kelley 2013-01-08 01:52:56 -05:00
parent 817fb9b51e
commit c03ac963d9
3 changed files with 192 additions and 31 deletions

138
README.md
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@ -93,6 +93,49 @@ server.on('login', function(client) {
* Follow the Windows instructions from [Obvious/ursa](https://github.com/Obvious/ursa)
* `npm install minecraft-protocol`
## Documentation
### mc.ping(options, callback)
`callback(err, pingResults)`
`pingResults`:
* `prefix`
* `protocol`
* `version`
* `motd`
* `playerCount`
* `maxPlayers`
### Not Immediately Obvious Data Type Formats
#### entityMetadata
When *writing* a packet with an entityMetadata data type field, the structure
looks like this:
```js
[
{type: 'slot', value: slot},
{type: 'int', value: value},
...
]
```
When *receiving* a packet with an entityMetadata data type field, the structure
looks like this:
```js
{
1: value,
3: value,
}
```
Where the key is the numeric metadata key and the value is the value of the
correct data type.
## Testing
* Ensure your system has the `java` executable in `PATH`.
@ -102,20 +145,97 @@ server.on('login', function(client) {
### Test Coverage
```
packets
✓ 0x00
✓ 0x01
✓ 0x02
✓ 0x03
✓ 0x04
✓ 0x05
✓ 0x06
✓ 0x07
✓ 0x08
✓ 0x09
✓ 0x0a
✓ 0x0b
✓ 0x0c
✓ 0x0d
✓ 0x0e
✓ 0x0f
✓ 0x10
✓ 0x11
✓ 0x12
✓ 0x13
✓ 0x14
✓ 0x16
✓ 0x17
✓ 0x18
✓ 0x19
✓ 0x1a
✓ 0x1c
✓ 0x1d
✓ 0x1e
✓ 0x1f
✓ 0x20
✓ 0x21
✓ 0x22
✓ 0x23
✓ 0x26
✓ 0x27
✓ 0x28
✓ 0x29
✓ 0x2a
✓ 0x2b
✓ 0x33
✓ 0x34
✓ 0x35
✓ 0x36
✓ 0x37
✓ 0x38
✓ 0x3c
✓ 0x3d
✓ 0x3e
✓ 0x46
✓ 0x47
✓ 0x64
✓ 0x65
✓ 0x66
✓ 0x67
✓ 0x68
✓ 0x69
✓ 0x6a
✓ 0x6b
✓ 0x6c
✓ 0x82
✓ 0x83
✓ 0x84
✓ 0xc8
✓ 0xc9
✓ 0xca
✓ 0xcb
✓ 0xcc
✓ 0xcd
✓ 0xfa
✓ 0xfc
✓ 0xfd
✓ 0xfe
✓ 0xff
client
✓ pings the server (6164ms)
✓ connects successfully - online mode (2527ms)
✓ connects successfully - offline mode (1902ms)
✓ gets kicked when no credentials supplied in online mode (3720ms)
✓ does not crash for 10000ms (11731ms)
✓ pings the server
✓ connects successfully - online mode
✓ connects successfully - offline mode
✓ gets kicked when no credentials supplied in online mode
✓ does not crash for 10000ms
mc-server
✓ starts listening and shuts down cleanly
✓ kicks clients that do not log in (103ms)
✓ kicks clients that do not send keepalive packets (104ms)
✓ kicks clients that do not log in
✓ kicks clients that do not send keepalive packets
✓ responds to ping requests
✓ clients can log in and chat (43ms)
✓ clients can log in and chat
✓ gives correct reason for kicking clients when shutting down
11 tests complete (45 seconds)
85 tests complete
```

78
lib/protocol.js
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@ -492,11 +492,65 @@ SlotArrayWriter.prototype.write = function(buffer, offset) {
});
}
function EntityMetadataWriter(value) {
var entityMetadataTypes = {
0: 'byte',
1: 'short',
2: 'int',
3: 'float',
4: 'string',
5: 'slot',
6: 'intVector',
};
// maps string type name to number
var entityMetadataTypeBytes = {};
for (var n in entityMetadataTypes) {
entityMetadataTypeBytes[entityMetadataTypes[n]] = n;
}
EntityMetadataWriter.prototype.write = function() {
function EntityMetadataWriter(value) {
this.value = [];
this.size = 1;
value.forEach(function(item) {
this.size += 1;
var Writer = types[item.type][1];
assert.ok(Writer, "missing writer for data type " + item.type);
var writer = new Writer(item.value);
this.size += writer.size;
this.value.push({
writer: writer,
key: item.key,
type: entityMetadataTypeBytes[item.type],
});
});
}
EntityMetadataWriter.prototype.write = function(buffer, offset) {
this.value.forEach(function(item) {
var headerByte = (item.type << 5) & item.key;
buffer.write(headerByte, offset);
offset += 1;
item.writer.write(buffer, offset);
offset += item.writer.size;
});
buffer.writeUInt8(127, offset);
}
function ObjectDataWriter(value) {
this.value = value;
this.size = value === 0 ? 4 : 10;
}
ObjectDataWriter.prototype.write = function(buffer, offset) {
buffer.writeInt32BE(this.value.intField, offset);
if (this.value.intField === 0) return;
offset += 4;
buffer.writeInt16BE(this.value.velocityX, offset);
offset += 2;
buffer.writeInt16BE(this.value.velocityY, offset);
offset += 2;
buffer.writeInt16BE(this.value.velocityZ, offset);
}
function MapChunkBulkWriter(value) {
@ -529,14 +583,6 @@ MapChunkBulkWriter.prototype.write = function(buffer, offset) {
}
}
function ObjectDataWriter(value) {
}
ObjectDataWriter.prototype.write = function() {
}
function IntArray8Writer(value) {
this.value = value;
this.size = 1 + 4 * value.length;
@ -592,16 +638,6 @@ ByteVectorArrayWriter.prototype.write = function(buffer, offset) {
});
}
var entityMetadataReaders = {
0: readByte,
1: readShort,
2: readInt,
3: readFloat,
4: readString,
5: readSlot,
6: readIntVector,
};
function readIntArray8(buffer, offset) {
var results = readByte(buffer, offset);
if (! results) return null;
@ -681,7 +717,7 @@ function readEntityMetadata(buffer, offset) {
if (item === 0x7f) break;
key = item & 0x1f;
type = item >> 5;
reader = entityMetadataReaders[type];
reader = types[entityMetadataTypes[type]][0];
assert.ok(reader, "missing reader for entity metadata type " + type);
results = reader(buffer, cursor);
if (! results) return null;

7
test/test.js
View file

@ -86,7 +86,7 @@ var values = {
addBitMap: 10,
}],
}, ok],
'entityMetadata': [{}, ok],
'entityMetadata': [[], ok],
'objectData': [{
intField: 9,
velocityX: 1,
@ -153,6 +153,11 @@ describe("packets", function() {
assertPacketsMatch(receivedPacket, clientReceivedPacket);
done();
});
// entityMetadata does not have the same format sending and receiving
// we skip the test.
if (receivedPacket.metadata) {
return done();
}
serverClient.write(packetId, receivedPacket);
});
client.write(packetId, packet);