AstralTransRocketries/node-minecraft-protocol
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move entity metadata type to minecraft.js

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This commit is contained in:
Romain Beaumont 2015-05-13 04:06:14 +02:00
parent 877ede063d
commit fe443e84ff
2 changed files with 94 additions and 93 deletions
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94
src/datatypes/minecraft.js
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@ -7,7 +7,8 @@ module.exports = {
'position': [readPosition, writePosition, 8],
'slot': [readSlot, writeSlot, sizeOfSlot],
'nbt': [readNbt, utils.buffer[1], utils.buffer[2]],
'restBuffer': [readRestBuffer, utils.buffer[1], utils.buffer[2]]
'restBuffer': [readRestBuffer, utils.buffer[1], utils.buffer[2]],
'entityMetadata': [readEntityMetadata, writeEntityMetadata, sizeOfEntityMetadata]
};
function readUUID(buffer, offset) {
@ -144,3 +145,94 @@ function readRestBuffer(buffer, offset, typeArgs, rootNode) {
size: buffer.length - offset
};
}
var entityMetadataTypes = {
0: { type: 'byte' },
1: { type: 'short' },
2: { type: 'int' },
3: { type: 'float' },
4: { type: 'string' },
5: { type: 'slot' },
6: { type: 'container', typeArgs: { fields: [
{ name: 'x', type: 'int' },
{ name: 'y', type: 'int' },
{ name: 'z', type: 'int' }
]}},
7: { type: 'container', typeArgs: { fields: [
{ name: 'pitch', type: 'float' },
{ name: 'yaw', type: 'float' },
{ name: 'roll', type: 'float' }
]}}
};
// maps string type name to number
var entityMetadataTypeBytes = {};
for (var n in entityMetadataTypes) {
if (!entityMetadataTypes.hasOwnProperty(n)) continue;
entityMetadataTypeBytes[entityMetadataTypes[n].type] = n;
}
function readEntityMetadata(buffer, offset) {
var cursor = offset;
var metadata = [];
var item, key, type, results, reader, typeName, dataType;
while (true) {
if (cursor + 1 > buffer.length) return null;
item = buffer.readUInt8(cursor);
cursor += 1;
if (item === 0x7f) {
return {
value: metadata,
size: cursor - offset,
};
}
key = item & 0x1f;
type = item >> 5;
dataType = entityMetadataTypes[type];
typeName = dataType.type;
//debug("Reading entity metadata type " + dataType + " (" + ( typeName || "unknown" ) + ")");
if (!dataType) {
return {
error: new Error("unrecognized entity metadata type " + type)
}
}
results = this.read(buffer, cursor, dataType, {});
if (! results) return null;
metadata.push({
key: key,
value: results.value,
type: typeName,
});
cursor += results.size;
}
}
function writeEntityMetadata(value, buffer, offset) {
var self=this;
value.forEach(function(item) {
var type = entityMetadataTypeBytes[item.type];
var headerByte = (type << 5) | item.key;
buffer.writeUInt8(headerByte, offset);
offset += 1;
offset = self.write(item.value, buffer, offset, entityMetadataTypes[type], {});
});
buffer.writeUInt8(0x7f, offset);
return offset + 1;
}
function sizeOfEntityMetadata(value) {
var size = 1 + value.length;
var item;
for (var i = 0; i < value.length; ++i) {
item = value[i];
size += this.sizeOf(item.value, entityMetadataTypes[entityMetadataTypeBytes[item.type]], {});
}
return size;
}

93
src/protocol.js
View File

@ -80,7 +80,7 @@ var types = {
'position': minecraft.position,
'slot': minecraft.slot,
'nbt': minecraft.nbt,
'entityMetadata': [readEntityMetadata, writeEntityMetadata, sizeOfEntityMetadata]
'entityMetadata': minecraft.entityMetadata
};
@ -98,97 +98,6 @@ if (process.env.NODE_DEBUG && /(minecraft-protocol|mc-proto)/.test(process.env.N
debug = function() { };
}
var entityMetadataTypes = {
0: { type: 'byte' },
1: { type: 'short' },
2: { type: 'int' },
3: { type: 'float' },
4: { type: 'string' },
5: { type: 'slot' },
6: { type: 'container', typeArgs: { fields: [
{ name: 'x', type: 'int' },
{ name: 'y', type: 'int' },
{ name: 'z', type: 'int' }
]}},
7: { type: 'container', typeArgs: { fields: [
{ name: 'pitch', type: 'float' },
{ name: 'yaw', type: 'float' },
{ name: 'roll', type: 'float' }
]}}
};
// maps string type name to number
var entityMetadataTypeBytes = {};
for (var n in entityMetadataTypes) {
if (!entityMetadataTypes.hasOwnProperty(n)) continue;
entityMetadataTypeBytes[entityMetadataTypes[n].type] = n;
}
function readEntityMetadata(buffer, offset) {
var cursor = offset;
var metadata = [];
var item, key, type, results, reader, typeName, dataType;
while (true) {
if (cursor + 1 > buffer.length) return null;
item = buffer.readUInt8(cursor);
cursor += 1;
if (item === 0x7f) {
return {
value: metadata,
size: cursor - offset,
};
}
key = item & 0x1f;
type = item >> 5;
dataType = entityMetadataTypes[type];
typeName = dataType.type;
//debug("Reading entity metadata type " + dataType + " (" + ( typeName || "unknown" ) + ")");
if (!dataType) {
return {
error: new Error("unrecognized entity metadata type " + type)
}
}
results = proto.read(buffer, cursor, dataType, {});
if (! results) return null;
metadata.push({
key: key,
value: results.value,
type: typeName,
});
cursor += results.size;
}
}
function writeEntityMetadata(value, buffer, offset) {
value.forEach(function(item) {
var type = entityMetadataTypeBytes[item.type];
var headerByte = (type << 5) | item.key;
buffer.writeUInt8(headerByte, offset);
offset += 1;
offset = proto.write(item.value, buffer, offset, entityMetadataTypes[type], {});
});
buffer.writeUInt8(0x7f, offset);
return offset + 1;
}
function sizeOfEntityMetadata(value) {
var size = 1 + value.length;
var item;
for (var i = 0; i < value.length; ++i) {
item = value[i];
size += proto.sizeOf(item.value, entityMetadataTypes[entityMetadataTypeBytes[item.type]], {});
}
return size;
}
function NMProtocols()
{