1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
package net.minecraft.server;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
public class Packet51MapChunk extends Packet {
public int a;
public int b;
public int c;
public int d;
private byte[] buffer;
private byte[] inflatedBuffer;
public boolean e;
private int size;
private static byte[] buildBuffer = new byte[196864];
public Packet51MapChunk() {
this.lowPriority = true;
}
public Packet51MapChunk(Chunk chunk, boolean flag, int i) {
this.lowPriority = true;
this.a = chunk.x;
this.b = chunk.z;
this.e = flag;
ChunkMap chunkmap = a(chunk, flag, i);
Deflater deflater = new Deflater(-1);
this.d = chunkmap.c;
this.c = chunkmap.b;
try {
this.inflatedBuffer = chunkmap.a;
deflater.setInput(chunkmap.a, 0, chunkmap.a.length);
deflater.finish();
this.buffer = new byte[chunkmap.a.length];
this.size = deflater.deflate(this.buffer);
} finally {
deflater.end();
}
}
public void a(DataInputStream datainputstream) throws IOException { // CraftBukkit - throws IOException
this.a = datainputstream.readInt();
this.b = datainputstream.readInt();
this.e = datainputstream.readBoolean();
this.c = datainputstream.readShort();
this.d = datainputstream.readShort();
this.size = datainputstream.readInt();
if (buildBuffer.length < this.size) {
buildBuffer = new byte[this.size];
}
datainputstream.readFully(buildBuffer, 0, this.size);
int i = 0;
int j;
for (j = 0; j < 16; ++j) {
i += this.c >> j & 1;
}
j = 12288 * i;
if (this.e) {
j += 256;
}
this.inflatedBuffer = new byte[j];
Inflater inflater = new Inflater();
inflater.setInput(buildBuffer, 0, this.size);
try {
inflater.inflate(this.inflatedBuffer);
} catch (DataFormatException dataformatexception) {
throw new IOException("Bad compressed data format");
} finally {
inflater.end();
}
}
public void a(DataOutputStream dataoutputstream) throws IOException { // CraftBukkit - throws IOException
dataoutputstream.writeInt(this.a);
dataoutputstream.writeInt(this.b);
dataoutputstream.writeBoolean(this.e);
dataoutputstream.writeShort((short) (this.c & '\uffff'));
dataoutputstream.writeShort((short) (this.d & '\uffff'));
dataoutputstream.writeInt(this.size);
dataoutputstream.write(this.buffer, 0, this.size);
}
public void handle(Connection connection) {
connection.a(this);
}
public int a() {
return 17 + this.size;
}
public static ChunkMap a(Chunk chunk, boolean flag, int i) {
int j = 0;
ChunkSection[] achunksection = chunk.i();
int k = 0;
ChunkMap chunkmap = new ChunkMap();
byte[] abyte = buildBuffer;
if (flag) {
chunk.seenByPlayer = true;
}
int l;
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && (i & 1 << l) != 0) {
chunkmap.b |= 1 << l;
if (achunksection[l].getExtendedIdArray() != null) {
chunkmap.c |= 1 << l;
++k;
}
}
}
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && (i & 1 << l) != 0) {
byte[] abyte1 = achunksection[l].getIdArray();
System.arraycopy(abyte1, 0, abyte, j, abyte1.length);
j += abyte1.length;
}
}
NibbleArray nibblearray;
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && (i & 1 << l) != 0) {
nibblearray = achunksection[l].getDataArray();
System.arraycopy(nibblearray.a, 0, abyte, j, nibblearray.a.length);
j += nibblearray.a.length;
}
}
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && (i & 1 << l) != 0) {
nibblearray = achunksection[l].getEmittedLightArray();
System.arraycopy(nibblearray.a, 0, abyte, j, nibblearray.a.length);
j += nibblearray.a.length;
}
}
if (!chunk.world.worldProvider.f) {
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && (i & 1 << l) != 0) {
nibblearray = achunksection[l].getSkyLightArray();
System.arraycopy(nibblearray.a, 0, abyte, j, nibblearray.a.length);
j += nibblearray.a.length;
}
}
}
if (k > 0) {
for (l = 0; l < achunksection.length; ++l) {
if (achunksection[l] != null && (!flag || !achunksection[l].isEmpty()) && achunksection[l].getExtendedIdArray() != null && (i & 1 << l) != 0) {
nibblearray = achunksection[l].getExtendedIdArray();
System.arraycopy(nibblearray.a, 0, abyte, j, nibblearray.a.length);
j += nibblearray.a.length;
}
}
}
if (flag) {
byte[] abyte2 = chunk.m();
System.arraycopy(abyte2, 0, abyte, j, abyte2.length);
j += abyte2.length;
}
chunkmap.a = new byte[j];
System.arraycopy(abyte, 0, chunkmap.a, 0, j);
return chunkmap;
}
}
|
