1 |
root |
1.46 |
/* |
2 |
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1.51 |
* This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 |
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1.46 |
* |
4 |
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* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 |
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* |
6 |
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1.51 |
* Crossfire TRT is free software: you can redistribute it and/or modify |
7 |
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* it under the terms of the GNU General Public License as published by |
8 |
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* the Free Software Foundation, either version 3 of the License, or |
9 |
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* (at your option) any later version. |
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1.46 |
* |
11 |
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1.51 |
* This program is distributed in the hope that it will be useful, |
12 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
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* GNU General Public License for more details. |
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1.46 |
* |
16 |
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1.51 |
* You should have received a copy of the GNU General Public License |
17 |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
18 |
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1.46 |
* |
19 |
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* The authors can be reached via e-mail to <crossfire@schmorp.de> |
20 |
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*/ |
21 |
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22 |
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1.1 |
#ifndef UTIL_H__ |
23 |
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#define UTIL_H__ |
24 |
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25 |
root |
1.36 |
//#define PREFER_MALLOC |
26 |
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27 |
root |
1.2 |
#if __GNUC__ >= 3 |
28 |
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1.45 |
# define is_constant(c) __builtin_constant_p (c) |
29 |
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# define expect(expr,value) __builtin_expect ((expr),(value)) |
30 |
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# define prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
31 |
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1.2 |
#else |
32 |
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1.45 |
# define is_constant(c) 0 |
33 |
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# define expect(expr,value) (expr) |
34 |
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# define prefetch(addr,rw,locality) |
35 |
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1.2 |
#endif |
36 |
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37 |
root |
1.47 |
#if __GNUC__ < 4 || (__GNUC__ == 4 || __GNUC_MINOR__ < 4) |
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# define decltype(x) typeof(x) |
39 |
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#endif |
40 |
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41 |
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1.45 |
// put into ifs if you are very sure that the expression |
42 |
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// is mostly true or mosty false. note that these return |
43 |
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// booleans, not the expression. |
44 |
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#define expect_false(expr) expect ((expr) != 0, 0) |
45 |
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#define expect_true(expr) expect ((expr) != 0, 1) |
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47 |
root |
1.11 |
#include <cstddef> |
48 |
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1.28 |
#include <cmath> |
49 |
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1.25 |
#include <new> |
50 |
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#include <vector> |
51 |
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1.11 |
|
52 |
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#include <glib.h> |
53 |
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54 |
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1.25 |
#include <shstr.h> |
55 |
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#include <traits.h> |
56 |
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57 |
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1.49 |
// use C0X decltype for auto declarations until ISO C++ sanctifies them (if ever) |
58 |
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1.47 |
#define auto(var,expr) decltype(expr) var = (expr) |
59 |
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1.14 |
|
60 |
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1.26 |
// very ugly macro that basicaly declares and initialises a variable |
61 |
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// that is in scope for the next statement only |
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// works only for stuff that can be assigned 0 and converts to false |
63 |
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// (note: works great for pointers) |
64 |
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// most ugly macro I ever wrote |
65 |
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1.48 |
#define statementvar(type, name, value) if (type name = 0) { } else if (((name) = (value)), 1) |
66 |
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1.26 |
|
67 |
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1.27 |
// in range including end |
68 |
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#define IN_RANGE_INC(val,beg,end) \ |
69 |
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((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
70 |
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// in range excluding end |
72 |
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#define IN_RANGE_EXC(val,beg,end) \ |
73 |
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((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
74 |
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75 |
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1.31 |
void fork_abort (const char *msg); |
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77 |
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1.35 |
// rationale for using (U) not (T) is to reduce signed/unsigned issues, |
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// as a is often a constant while b is the variable. it is still a bug, though. |
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template<typename T, typename U> static inline T min (T a, U b) { return (U)a < b ? (U)a : b; } |
80 |
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template<typename T, typename U> static inline T max (T a, U b) { return (U)a > b ? (U)a : b; } |
81 |
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template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? (T)a : v >(T)b ? (T)b : v; } |
82 |
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1.32 |
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83 |
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template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
84 |
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85 |
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1.44 |
template<typename T> |
86 |
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static inline T |
87 |
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lerp (T val, T min_in, T max_in, T min_out, T max_out) |
88 |
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{ |
89 |
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return (val - min_in) * (max_out - min_out) / (max_in - min_in) + min_out; |
90 |
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} |
91 |
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92 |
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1.37 |
// lots of stuff taken from FXT |
93 |
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94 |
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/* Rotate right. This is used in various places for checksumming */ |
95 |
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1.38 |
//TODO: that sucks, use a better checksum algo |
96 |
root |
1.37 |
static inline uint32_t |
97 |
root |
1.38 |
rotate_right (uint32_t c, uint32_t count = 1) |
98 |
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1.37 |
{ |
99 |
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1.38 |
return (c << (32 - count)) | (c >> count); |
100 |
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} |
101 |
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102 |
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static inline uint32_t |
103 |
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rotate_left (uint32_t c, uint32_t count = 1) |
104 |
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{ |
105 |
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return (c >> (32 - count)) | (c << count); |
106 |
root |
1.37 |
} |
107 |
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108 |
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// Return abs(a-b) |
109 |
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// Both a and b must not have the most significant bit set |
110 |
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static inline uint32_t |
111 |
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upos_abs_diff (uint32_t a, uint32_t b) |
112 |
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{ |
113 |
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long d1 = b - a; |
114 |
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long d2 = (d1 & (d1 >> 31)) << 1; |
115 |
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116 |
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return d1 - d2; // == (b - d) - (a + d); |
117 |
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} |
118 |
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119 |
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// Both a and b must not have the most significant bit set |
120 |
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static inline uint32_t |
121 |
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upos_min (uint32_t a, uint32_t b) |
122 |
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{ |
123 |
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int32_t d = b - a; |
124 |
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d &= d >> 31; |
125 |
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return a + d; |
126 |
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} |
127 |
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128 |
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// Both a and b must not have the most significant bit set |
129 |
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static inline uint32_t |
130 |
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upos_max (uint32_t a, uint32_t b) |
131 |
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{ |
132 |
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int32_t d = b - a; |
133 |
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d &= d >> 31; |
134 |
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return b - d; |
135 |
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} |
136 |
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137 |
root |
1.28 |
// this is much faster than crossfires original algorithm |
138 |
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// on modern cpus |
139 |
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inline int |
140 |
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isqrt (int n) |
141 |
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{ |
142 |
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return (int)sqrtf ((float)n); |
143 |
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} |
144 |
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145 |
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// this is only twice as fast as naive sqrtf (dx*dy+dy*dy) |
146 |
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#if 0 |
147 |
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// and has a max. error of 6 in the range -100..+100. |
148 |
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#else |
149 |
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// and has a max. error of 9 in the range -100..+100. |
150 |
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#endif |
151 |
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inline int |
152 |
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idistance (int dx, int dy) |
153 |
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{ |
154 |
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unsigned int dx_ = abs (dx); |
155 |
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unsigned int dy_ = abs (dy); |
156 |
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157 |
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#if 0 |
158 |
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return dx_ > dy_ |
159 |
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? (dx_ * 61685 + dy_ * 26870) >> 16 |
160 |
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: (dy_ * 61685 + dx_ * 26870) >> 16; |
161 |
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#else |
162 |
root |
1.30 |
return dx_ + dy_ - min (dx_, dy_) * 5 / 8; |
163 |
root |
1.28 |
#endif |
164 |
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} |
165 |
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166 |
root |
1.29 |
/* |
167 |
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* absdir(int): Returns a number between 1 and 8, which represent |
168 |
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* the "absolute" direction of a number (it actually takes care of |
169 |
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* "overflow" in previous calculations of a direction). |
170 |
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*/ |
171 |
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inline int |
172 |
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absdir (int d) |
173 |
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{ |
174 |
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return ((d - 1) & 7) + 1; |
175 |
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} |
176 |
root |
1.28 |
|
177 |
root |
1.1 |
// makes dynamically allocated objects zero-initialised |
178 |
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struct zero_initialised |
179 |
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{ |
180 |
root |
1.11 |
void *operator new (size_t s, void *p) |
181 |
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{ |
182 |
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memset (p, 0, s); |
183 |
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return p; |
184 |
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} |
185 |
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186 |
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void *operator new (size_t s) |
187 |
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{ |
188 |
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return g_slice_alloc0 (s); |
189 |
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} |
190 |
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191 |
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void *operator new[] (size_t s) |
192 |
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{ |
193 |
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return g_slice_alloc0 (s); |
194 |
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} |
195 |
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196 |
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void operator delete (void *p, size_t s) |
197 |
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{ |
198 |
|
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g_slice_free1 (s, p); |
199 |
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} |
200 |
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201 |
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void operator delete[] (void *p, size_t s) |
202 |
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{ |
203 |
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g_slice_free1 (s, p); |
204 |
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} |
205 |
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}; |
206 |
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207 |
root |
1.20 |
void *salloc_ (int n) throw (std::bad_alloc); |
208 |
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void *salloc_ (int n, void *src) throw (std::bad_alloc); |
209 |
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210 |
root |
1.12 |
// strictly the same as g_slice_alloc, but never returns 0 |
211 |
root |
1.20 |
template<typename T> |
212 |
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inline T *salloc (int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T)); } |
213 |
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|
214 |
root |
1.17 |
// also copies src into the new area, like "memdup" |
215 |
root |
1.18 |
// if src is 0, clears the memory |
216 |
|
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template<typename T> |
217 |
root |
1.20 |
inline T *salloc (int n, T *src) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), (void *)src); } |
218 |
root |
1.18 |
|
219 |
root |
1.21 |
// clears the memory |
220 |
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template<typename T> |
221 |
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inline T *salloc0(int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), 0); } |
222 |
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|
223 |
root |
1.12 |
// for symmetry |
224 |
root |
1.18 |
template<typename T> |
225 |
root |
1.20 |
inline void sfree (T *ptr, int n = 1) throw () |
226 |
root |
1.12 |
{ |
227 |
root |
1.36 |
#ifdef PREFER_MALLOC |
228 |
|
|
free (ptr); |
229 |
|
|
#else |
230 |
root |
1.20 |
g_slice_free1 (n * sizeof (T), (void *)ptr); |
231 |
root |
1.36 |
#endif |
232 |
root |
1.12 |
} |
233 |
root |
1.11 |
|
234 |
|
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// a STL-compatible allocator that uses g_slice |
235 |
|
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// boy, this is verbose |
236 |
|
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template<typename Tp> |
237 |
|
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struct slice_allocator |
238 |
|
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{ |
239 |
|
|
typedef size_t size_type; |
240 |
|
|
typedef ptrdiff_t difference_type; |
241 |
|
|
typedef Tp *pointer; |
242 |
|
|
typedef const Tp *const_pointer; |
243 |
|
|
typedef Tp &reference; |
244 |
|
|
typedef const Tp &const_reference; |
245 |
|
|
typedef Tp value_type; |
246 |
|
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|
247 |
|
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template <class U> |
248 |
|
|
struct rebind |
249 |
|
|
{ |
250 |
|
|
typedef slice_allocator<U> other; |
251 |
|
|
}; |
252 |
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|
253 |
|
|
slice_allocator () throw () { } |
254 |
|
|
slice_allocator (const slice_allocator &o) throw () { } |
255 |
|
|
template<typename Tp2> |
256 |
|
|
slice_allocator (const slice_allocator<Tp2> &) throw () { } |
257 |
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|
258 |
|
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~slice_allocator () { } |
259 |
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|
260 |
|
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pointer address (reference x) const { return &x; } |
261 |
|
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const_pointer address (const_reference x) const { return &x; } |
262 |
|
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|
263 |
|
|
pointer allocate (size_type n, const_pointer = 0) |
264 |
|
|
{ |
265 |
root |
1.18 |
return salloc<Tp> (n); |
266 |
root |
1.11 |
} |
267 |
|
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|
268 |
|
|
void deallocate (pointer p, size_type n) |
269 |
|
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{ |
270 |
root |
1.19 |
sfree<Tp> (p, n); |
271 |
root |
1.11 |
} |
272 |
|
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|
273 |
|
|
size_type max_size ()const throw () |
274 |
|
|
{ |
275 |
|
|
return size_t (-1) / sizeof (Tp); |
276 |
|
|
} |
277 |
|
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|
278 |
|
|
void construct (pointer p, const Tp &val) |
279 |
|
|
{ |
280 |
|
|
::new (p) Tp (val); |
281 |
|
|
} |
282 |
|
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|
283 |
|
|
void destroy (pointer p) |
284 |
|
|
{ |
285 |
|
|
p->~Tp (); |
286 |
|
|
} |
287 |
root |
1.1 |
}; |
288 |
|
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|
289 |
root |
1.32 |
// P. L'Ecuyer, “Maximally Equidistributed Combined Tausworthe Generators”, Mathematics of Computation, 65, 213 (1996), 203–213. |
290 |
|
|
// http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme.ps |
291 |
|
|
// http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme2.ps |
292 |
|
|
struct tausworthe_random_generator |
293 |
|
|
{ |
294 |
root |
1.34 |
// generator |
295 |
root |
1.32 |
uint32_t state [4]; |
296 |
|
|
|
297 |
root |
1.34 |
void operator =(const tausworthe_random_generator &src) |
298 |
|
|
{ |
299 |
|
|
state [0] = src.state [0]; |
300 |
|
|
state [1] = src.state [1]; |
301 |
|
|
state [2] = src.state [2]; |
302 |
|
|
state [3] = src.state [3]; |
303 |
|
|
} |
304 |
|
|
|
305 |
|
|
void seed (uint32_t seed); |
306 |
root |
1.32 |
uint32_t next (); |
307 |
|
|
|
308 |
root |
1.34 |
// uniform distribution |
309 |
root |
1.42 |
uint32_t operator ()(uint32_t num) |
310 |
root |
1.32 |
{ |
311 |
root |
1.42 |
return is_constant (num) |
312 |
|
|
? (next () * (uint64_t)num) >> 32U |
313 |
|
|
: get_range (num); |
314 |
root |
1.32 |
} |
315 |
|
|
|
316 |
|
|
// return a number within (min .. max) |
317 |
|
|
int operator () (int r_min, int r_max) |
318 |
|
|
{ |
319 |
root |
1.42 |
return is_constant (r_min) && is_constant (r_max) && r_min <= r_max |
320 |
|
|
? r_min + operator ()(r_max - r_min + 1) |
321 |
root |
1.34 |
: get_range (r_min, r_max); |
322 |
root |
1.32 |
} |
323 |
|
|
|
324 |
|
|
double operator ()() |
325 |
|
|
{ |
326 |
root |
1.34 |
return this->next () / (double)0xFFFFFFFFU; |
327 |
root |
1.32 |
} |
328 |
root |
1.34 |
|
329 |
|
|
protected: |
330 |
|
|
uint32_t get_range (uint32_t r_max); |
331 |
|
|
int get_range (int r_min, int r_max); |
332 |
root |
1.32 |
}; |
333 |
|
|
|
334 |
|
|
typedef tausworthe_random_generator rand_gen; |
335 |
|
|
|
336 |
|
|
extern rand_gen rndm; |
337 |
|
|
|
338 |
root |
1.54 |
INTERFACE_CLASS (attachable) |
339 |
|
|
struct refcnt_base |
340 |
|
|
{ |
341 |
|
|
typedef int refcnt_t; |
342 |
|
|
mutable refcnt_t ACC (RW, refcnt); |
343 |
|
|
|
344 |
|
|
MTH void refcnt_inc () const { ++refcnt; } |
345 |
|
|
MTH void refcnt_dec () const { --refcnt; } |
346 |
|
|
|
347 |
|
|
refcnt_base () : refcnt (0) { } |
348 |
|
|
}; |
349 |
|
|
|
350 |
root |
1.56 |
// to avoid branches with more advanced compilers |
351 |
root |
1.54 |
extern refcnt_base::refcnt_t refcnt_dummy; |
352 |
|
|
|
353 |
root |
1.7 |
template<class T> |
354 |
|
|
struct refptr |
355 |
|
|
{ |
356 |
root |
1.54 |
// p if not null |
357 |
|
|
refcnt_base::refcnt_t *refcnt_ref () { return p ? &p->refcnt : &refcnt_dummy; } |
358 |
|
|
|
359 |
|
|
void refcnt_dec () |
360 |
|
|
{ |
361 |
|
|
if (!is_constant (p)) |
362 |
|
|
--*refcnt_ref (); |
363 |
|
|
else if (p) |
364 |
|
|
--p->refcnt; |
365 |
|
|
} |
366 |
|
|
|
367 |
|
|
void refcnt_inc () |
368 |
|
|
{ |
369 |
|
|
if (!is_constant (p)) |
370 |
|
|
++*refcnt_ref (); |
371 |
|
|
else if (p) |
372 |
|
|
++p->refcnt; |
373 |
|
|
} |
374 |
|
|
|
375 |
root |
1.7 |
T *p; |
376 |
|
|
|
377 |
|
|
refptr () : p(0) { } |
378 |
root |
1.54 |
refptr (const refptr<T> &p) : p(p.p) { refcnt_inc (); } |
379 |
|
|
refptr (T *p) : p(p) { refcnt_inc (); } |
380 |
|
|
~refptr () { refcnt_dec (); } |
381 |
root |
1.7 |
|
382 |
|
|
const refptr<T> &operator =(T *o) |
383 |
|
|
{ |
384 |
root |
1.54 |
// if decrementing ever destroys we need to reverse the order here |
385 |
|
|
refcnt_dec (); |
386 |
root |
1.7 |
p = o; |
387 |
root |
1.54 |
refcnt_inc (); |
388 |
root |
1.7 |
return *this; |
389 |
|
|
} |
390 |
|
|
|
391 |
root |
1.54 |
const refptr<T> &operator =(const refptr<T> &o) |
392 |
root |
1.7 |
{ |
393 |
|
|
*this = o.p; |
394 |
|
|
return *this; |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
T &operator * () const { return *p; } |
398 |
root |
1.54 |
T *operator ->() const { return p; } |
399 |
root |
1.7 |
|
400 |
|
|
operator T *() const { return p; } |
401 |
|
|
}; |
402 |
|
|
|
403 |
root |
1.24 |
typedef refptr<maptile> maptile_ptr; |
404 |
root |
1.22 |
typedef refptr<object> object_ptr; |
405 |
|
|
typedef refptr<archetype> arch_ptr; |
406 |
root |
1.24 |
typedef refptr<client> client_ptr; |
407 |
|
|
typedef refptr<player> player_ptr; |
408 |
root |
1.22 |
|
409 |
root |
1.4 |
struct str_hash |
410 |
|
|
{ |
411 |
|
|
std::size_t operator ()(const char *s) const |
412 |
|
|
{ |
413 |
|
|
unsigned long hash = 0; |
414 |
|
|
|
415 |
|
|
/* use the one-at-a-time hash function, which supposedly is |
416 |
|
|
* better than the djb2-like one used by perl5.005, but |
417 |
|
|
* certainly is better then the bug used here before. |
418 |
|
|
* see http://burtleburtle.net/bob/hash/doobs.html |
419 |
|
|
*/ |
420 |
|
|
while (*s) |
421 |
|
|
{ |
422 |
|
|
hash += *s++; |
423 |
|
|
hash += hash << 10; |
424 |
|
|
hash ^= hash >> 6; |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
hash += hash << 3; |
428 |
|
|
hash ^= hash >> 11; |
429 |
|
|
hash += hash << 15; |
430 |
|
|
|
431 |
|
|
return hash; |
432 |
|
|
} |
433 |
|
|
}; |
434 |
|
|
|
435 |
|
|
struct str_equal |
436 |
|
|
{ |
437 |
|
|
bool operator ()(const char *a, const char *b) const |
438 |
|
|
{ |
439 |
|
|
return !strcmp (a, b); |
440 |
|
|
} |
441 |
|
|
}; |
442 |
|
|
|
443 |
root |
1.49 |
// Mostly the same as std::vector, but insert/erase can reorder |
444 |
root |
1.52 |
// the elements, making append(=insert)/remove O(1) instead of O(n). |
445 |
root |
1.49 |
// |
446 |
root |
1.52 |
// NOTE: only some forms of erase are available |
447 |
root |
1.26 |
template<class T> |
448 |
|
|
struct unordered_vector : std::vector<T, slice_allocator<T> > |
449 |
root |
1.6 |
{ |
450 |
root |
1.11 |
typedef typename unordered_vector::iterator iterator; |
451 |
root |
1.6 |
|
452 |
|
|
void erase (unsigned int pos) |
453 |
|
|
{ |
454 |
|
|
if (pos < this->size () - 1) |
455 |
|
|
(*this)[pos] = (*this)[this->size () - 1]; |
456 |
|
|
|
457 |
|
|
this->pop_back (); |
458 |
|
|
} |
459 |
|
|
|
460 |
|
|
void erase (iterator i) |
461 |
|
|
{ |
462 |
|
|
erase ((unsigned int )(i - this->begin ())); |
463 |
|
|
} |
464 |
|
|
}; |
465 |
|
|
|
466 |
root |
1.49 |
// This container blends advantages of linked lists |
467 |
|
|
// (efficiency) with vectors (random access) by |
468 |
|
|
// by using an unordered vector and storing the vector |
469 |
|
|
// index inside the object. |
470 |
|
|
// |
471 |
|
|
// + memory-efficient on most 64 bit archs |
472 |
|
|
// + O(1) insert/remove |
473 |
|
|
// + free unique (but varying) id for inserted objects |
474 |
|
|
// + cache-friendly iteration |
475 |
|
|
// - only works for pointers to structs |
476 |
|
|
// |
477 |
|
|
// NOTE: only some forms of erase/insert are available |
478 |
root |
1.50 |
typedef int object_vector_index; |
479 |
|
|
|
480 |
|
|
template<class T, object_vector_index T::*indexmember> |
481 |
root |
1.26 |
struct object_vector : std::vector<T *, slice_allocator<T *> > |
482 |
|
|
{ |
483 |
root |
1.48 |
typedef typename object_vector::iterator iterator; |
484 |
|
|
|
485 |
|
|
bool contains (const T *obj) const |
486 |
|
|
{ |
487 |
root |
1.50 |
return obj->*indexmember; |
488 |
root |
1.48 |
} |
489 |
|
|
|
490 |
|
|
iterator find (const T *obj) |
491 |
|
|
{ |
492 |
root |
1.50 |
return obj->*indexmember |
493 |
|
|
? this->begin () + obj->*indexmember - 1 |
494 |
root |
1.48 |
: this->end (); |
495 |
|
|
} |
496 |
|
|
|
497 |
root |
1.53 |
void push_back (T *obj) |
498 |
|
|
{ |
499 |
|
|
std::vector<T *, slice_allocator<T *> >::push_back (obj); |
500 |
|
|
obj->*indexmember = this->size (); |
501 |
|
|
} |
502 |
|
|
|
503 |
root |
1.26 |
void insert (T *obj) |
504 |
|
|
{ |
505 |
|
|
push_back (obj); |
506 |
|
|
} |
507 |
|
|
|
508 |
|
|
void insert (T &obj) |
509 |
|
|
{ |
510 |
|
|
insert (&obj); |
511 |
|
|
} |
512 |
|
|
|
513 |
|
|
void erase (T *obj) |
514 |
|
|
{ |
515 |
root |
1.50 |
unsigned int pos = obj->*indexmember; |
516 |
|
|
obj->*indexmember = 0; |
517 |
root |
1.26 |
|
518 |
|
|
if (pos < this->size ()) |
519 |
|
|
{ |
520 |
|
|
(*this)[pos - 1] = (*this)[this->size () - 1]; |
521 |
root |
1.50 |
(*this)[pos - 1]->*indexmember = pos; |
522 |
root |
1.26 |
} |
523 |
|
|
|
524 |
|
|
this->pop_back (); |
525 |
|
|
} |
526 |
|
|
|
527 |
|
|
void erase (T &obj) |
528 |
|
|
{ |
529 |
root |
1.50 |
erase (&obj); |
530 |
root |
1.26 |
} |
531 |
|
|
}; |
532 |
|
|
|
533 |
root |
1.10 |
// basically does what strncpy should do, but appends "..." to strings exceeding length |
534 |
|
|
void assign (char *dst, const char *src, int maxlen); |
535 |
|
|
|
536 |
|
|
// type-safe version of assign |
537 |
root |
1.9 |
template<int N> |
538 |
|
|
inline void assign (char (&dst)[N], const char *src) |
539 |
|
|
{ |
540 |
root |
1.10 |
assign ((char *)&dst, src, N); |
541 |
root |
1.9 |
} |
542 |
|
|
|
543 |
root |
1.17 |
typedef double tstamp; |
544 |
|
|
|
545 |
|
|
// return current time as timestampe |
546 |
|
|
tstamp now (); |
547 |
|
|
|
548 |
root |
1.25 |
int similar_direction (int a, int b); |
549 |
|
|
|
550 |
root |
1.55 |
// like sprintf, but returns a "static" buffer |
551 |
|
|
const char *format (const char *format, ...); |
552 |
root |
1.43 |
|
553 |
root |
1.1 |
#endif |
554 |
|
|
|