|
1
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
2
|
// Copyright 2023 Leszek Koltunski //
|
|
3
|
// //
|
|
4
|
// This file is part of Magic Cube. //
|
|
5
|
// //
|
|
6
|
// Magic Cube is proprietary software licensed under an EULA which you should have received //
|
|
7
|
// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html //
|
|
8
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
9
|
|
|
10
|
package org.distorted.objectlib.tablebases;
|
|
11
|
|
|
12
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
13
|
|
|
14
|
class Tablebase
|
|
15
|
{
|
|
16
|
private final byte UNINITIALIZED = (byte)0xff;
|
|
17
|
private final byte[] mUnpackedTable;
|
|
18
|
private byte[] mPackedTable;
|
|
19
|
|
|
20
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
21
|
|
|
22
|
Tablebase(int size)
|
|
23
|
{
|
|
24
|
mUnpackedTable = new byte[size];
|
|
25
|
for(int i=0; i<size; i++) mUnpackedTable[i] = UNINITIALIZED;
|
|
26
|
}
|
|
27
|
|
|
28
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
29
|
|
|
30
|
Tablebase(byte[] data)
|
|
31
|
{
|
|
32
|
mUnpackedTable = null;
|
|
33
|
mPackedTable = data;
|
|
34
|
}
|
|
35
|
|
|
36
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
37
|
|
|
38
|
boolean insertUnpacked(int index, byte value)
|
|
39
|
{
|
|
40
|
if( mUnpackedTable[index]==UNINITIALIZED )
|
|
41
|
{
|
|
42
|
mUnpackedTable[index] = value;
|
|
43
|
return true;
|
|
44
|
}
|
|
45
|
return false;
|
|
46
|
}
|
|
47
|
|
|
48
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
49
|
|
|
50
|
byte retrieveUnpacked(int index)
|
|
51
|
{
|
|
52
|
return mUnpackedTable[index];
|
|
53
|
}
|
|
54
|
|
|
55
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
56
|
|
|
57
|
private void createPacked(int size)
|
|
58
|
{
|
|
59
|
mPackedTable = new byte[(size+4)/5];
|
|
60
|
}
|
|
61
|
|
|
62
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
63
|
|
|
64
|
private void insertPacked(int index, byte value)
|
|
65
|
{
|
|
66
|
int indexToInsert = index/5;
|
|
67
|
byte actualInserted = (byte)(value%3);
|
|
68
|
int val = mPackedTable[indexToInsert] & 0xff; // convert to 'unsigned'
|
|
69
|
|
|
70
|
int b0 = val%3; val/=3;
|
|
71
|
int b1 = val%3; val/=3;
|
|
72
|
int b2 = val%3; val/=3;
|
|
73
|
int b3 = val%3; val/=3;
|
|
74
|
int b4 = val%3;
|
|
75
|
|
|
76
|
switch(index%5)
|
|
77
|
{
|
|
78
|
case 0: b0 = actualInserted; break;
|
|
79
|
case 1: b1 = actualInserted; break;
|
|
80
|
case 2: b2 = actualInserted; break;
|
|
81
|
case 3: b3 = actualInserted; break;
|
|
82
|
case 4: b4 = actualInserted; break;
|
|
83
|
}
|
|
84
|
|
|
85
|
mPackedTable[indexToInsert] = (byte)(b0 + 3*(b1 + 3*(b2 + 3*(b3 + 3*b4))));
|
|
86
|
}
|
|
87
|
|
|
88
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
89
|
|
|
90
|
byte retrievePacked(int index)
|
|
91
|
{
|
|
92
|
int indexToRetrieve = index/5;
|
|
93
|
int val = mPackedTable[indexToRetrieve] & 0xff; // convert to 'unsigned'
|
|
94
|
int offset = (index%5);
|
|
95
|
|
|
96
|
if(offset==0) return (byte)(val%3);
|
|
97
|
val/=3;
|
|
98
|
if(offset==1) return (byte)(val%3);
|
|
99
|
val/=3;
|
|
100
|
if(offset==2) return (byte)(val%3);
|
|
101
|
val/=3;
|
|
102
|
if(offset==3) return (byte)(val%3);
|
|
103
|
val/=3;
|
|
104
|
return (byte)(val%3);
|
|
105
|
}
|
|
106
|
|
|
107
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
108
|
|
|
109
|
void pack()
|
|
110
|
{
|
|
111
|
int size = mUnpackedTable.length;
|
|
112
|
createPacked(size);
|
|
113
|
|
|
114
|
for(int i=0; i<size; i++)
|
|
115
|
{
|
|
116
|
byte unpacked = retrieveUnpacked(i);
|
|
117
|
|
|
118
|
if( unpacked==UNINITIALIZED )
|
|
119
|
{
|
|
120
|
android.util.Log.e("D", "ERROR packing: index "+i+" still uninitialized!!");
|
|
121
|
}
|
|
122
|
|
|
123
|
insertPacked(i,unpacked);
|
|
124
|
}
|
|
125
|
/*
|
|
126
|
for(int i=0; i<size; i++)
|
|
127
|
{
|
|
128
|
byte unpacked = retrieveUnpacked(i);
|
|
129
|
byte packed = retrievePacked(i);
|
|
130
|
|
|
131
|
String m = "index="+i+" offset="+(i%5)+" unpacked="+unpacked+" packed="+packed;
|
|
132
|
if( ((unpacked%3) != packed) ) android.util.Log.e("D", m);
|
|
133
|
else android.util.Log.d("D", m);
|
|
134
|
}
|
|
135
|
*/
|
|
136
|
}
|
|
137
|
|
|
138
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
139
|
|
|
140
|
byte[] getPacked()
|
|
141
|
{
|
|
142
|
return mPackedTable;
|
|
143
|
}
|
|
144
|
}
|