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
|
/*
* The Mana World
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana World.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef LOCKEDARRAY_H
#define LOCKEDARRAY_H
#include <algorithm>
/**
* A _very_ basic array class that allows simple iteration and jumps, keeping
* its currently selected entry and providing a mechanism to lock this
* position. Anyone can unlock it though, so its your job to use it the right
* way ;)
*/
template<class T>
class LockedArray
{
public:
LockedArray(unsigned int size);
~LockedArray();
void lock() { mLocked = true; };
void unlock() { mLocked = false; };
bool isLocked() const { return mLocked; };
T getEntry() const { return mData[mCurEntry]; };
void setEntry(T entry) { mData[mCurEntry] = entry; mFilled = true; };
void next();
void prev();
void select(unsigned int pos);
unsigned int getPos() const { return mCurEntry; }
unsigned int getSize() const { return mSize; };
/**
* Clears the array without changing size or data type
*/
void clear();
protected:
unsigned int mSize;
T* mData;
unsigned int mCurEntry;
bool mLocked;
bool mFilled;
};
template<class T>
LockedArray<T>::LockedArray(unsigned int size):
mSize(size), mData(new T[size]), mCurEntry(0), mLocked(false),
mFilled(false)
{
std::fill_n(mData, mSize, (T)0);
}
template<class T>
LockedArray<T>::~LockedArray()
{
delete [] mData;
}
template<class T>
void LockedArray<T>::next()
{
if (mLocked)
return;
if (++mCurEntry == mSize)
mCurEntry = 0;
}
template<class T>
void LockedArray<T>::prev()
{
if (mLocked)
return;
mCurEntry = mCurEntry ? (--mCurEntry) : (mSize - 1);
}
template<class T>
void LockedArray<T>::select(unsigned int pos)
{
if (mLocked)
return;
mCurEntry = pos;
if (mCurEntry >= mSize)
mCurEntry = 0;
}
template<class T>
void LockedArray<T>::clear()
{
if (!mFilled) return;
delete [] mData;
mData = new T[mSize];
std::fill_n(mData, mSize, (T)0);
mCurEntry = 0;
mLocked = false;
}
#endif
|
