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6 | #else |
6 | #else |
7 | # define is_constant(c) 0 |
7 | # define is_constant(c) 0 |
8 | #endif |
8 | #endif |
9 | |
9 | |
10 | #include <cstddef> |
10 | #include <cstddef> |
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11 | #include <cmath> |
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12 | #include <new> |
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13 | #include <vector> |
11 | |
14 | |
12 | #include <glib.h> |
15 | #include <glib.h> |
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16 | |
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17 | #include <shstr.h> |
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18 | #include <traits.h> |
13 | |
19 | |
14 | // use a gcc extension for auto declarations until ISO C++ sanctifies them |
20 | // use a gcc extension for auto declarations until ISO C++ sanctifies them |
15 | #define AUTODECL(var,expr) typeof(expr) var = (expr) |
21 | #define AUTODECL(var,expr) typeof(expr) var = (expr) |
16 | |
22 | |
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23 | // very ugly macro that basicaly declares and initialises a variable |
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24 | // that is in scope for the next statement only |
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25 | // works only for stuff that can be assigned 0 and converts to false |
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26 | // (note: works great for pointers) |
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27 | // most ugly macro I ever wrote |
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28 | #define declvar(type, name, value) if (type name = 0) { } else if (((name) = (value)), 1) |
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29 | |
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30 | // in range including end |
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31 | #define IN_RANGE_INC(val,beg,end) \ |
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32 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
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33 | |
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34 | // in range excluding end |
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35 | #define IN_RANGE_EXC(val,beg,end) \ |
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36 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
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37 | |
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38 | // this is much faster than crossfires original algorithm |
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39 | // on modern cpus |
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40 | inline int |
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41 | isqrt (int n) |
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42 | { |
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43 | return (int)sqrtf ((float)n); |
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44 | } |
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45 | |
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46 | // this is only twice as fast as naive sqrtf (dx*dy+dy*dy) |
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47 | #if 0 |
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48 | // and has a max. error of 6 in the range -100..+100. |
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49 | #else |
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50 | // and has a max. error of 9 in the range -100..+100. |
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51 | #endif |
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52 | inline int |
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53 | idistance (int dx, int dy) |
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54 | { |
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55 | unsigned int dx_ = abs (dx); |
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56 | unsigned int dy_ = abs (dy); |
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57 | |
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58 | #if 0 |
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59 | return dx_ > dy_ |
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60 | ? (dx_ * 61685 + dy_ * 26870) >> 16 |
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61 | : (dy_ * 61685 + dx_ * 26870) >> 16; |
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62 | #else |
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63 | return dx_ + dy_ - min (dx_, dy_) * 5 / 8; |
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64 | #endif |
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65 | } |
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66 | |
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67 | /* |
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68 | * absdir(int): Returns a number between 1 and 8, which represent |
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69 | * the "absolute" direction of a number (it actually takes care of |
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70 | * "overflow" in previous calculations of a direction). |
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71 | */ |
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72 | inline int |
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73 | absdir (int d) |
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74 | { |
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75 | return ((d - 1) & 7) + 1; |
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76 | } |
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77 | |
17 | // makes dynamically allocated objects zero-initialised |
78 | // makes dynamically allocated objects zero-initialised |
18 | struct zero_initialised |
79 | struct zero_initialised |
19 | { |
80 | { |
20 | void *operator new (size_t s, void *p) |
81 | void *operator new (size_t s, void *p) |
21 | { |
82 | { |
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42 | { |
103 | { |
43 | g_slice_free1 (s, p); |
104 | g_slice_free1 (s, p); |
44 | } |
105 | } |
45 | }; |
106 | }; |
46 | |
107 | |
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108 | void *salloc_ (int n) throw (std::bad_alloc); |
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109 | void *salloc_ (int n, void *src) throw (std::bad_alloc); |
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110 | |
47 | // strictly the same as g_slice_alloc, but never returns 0 |
111 | // strictly the same as g_slice_alloc, but never returns 0 |
48 | void *salloc (int size) throw (std::bad_alloc); |
112 | template<typename T> |
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113 | inline T *salloc (int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T)); } |
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114 | |
49 | // also copies src into the new area, like "memdup" |
115 | // also copies src into the new area, like "memdup" |
50 | // if src is 0, clears the memory |
116 | // if src is 0, clears the memory |
51 | void *salloc (int size, void *src) throw (std::bad_alloc); |
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52 | |
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53 | // and as a template |
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54 | template<typename T> |
117 | template<typename T> |
55 | inline T *salloc (int size) throw (std::bad_alloc) { return (T *)salloc (size * sizeof (T)); } |
118 | inline T *salloc (int n, T *src) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), (void *)src); } |
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119 | |
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120 | // clears the memory |
56 | template<typename T> |
121 | template<typename T> |
57 | inline T *salloc (int size, T *src) throw (std::bad_alloc) { return (T *)salloc (size * sizeof (T), (void *)src); } |
122 | inline T *salloc0(int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), 0); } |
58 | |
123 | |
59 | // for symmetry |
124 | // for symmetry |
60 | template<typename T> |
125 | template<typename T> |
61 | inline void sfree (T *ptr, int size) throw () |
126 | inline void sfree (T *ptr, int n = 1) throw () |
62 | { |
127 | { |
63 | g_slice_free1 (size * sizeof (T), (void *)ptr); |
128 | g_slice_free1 (n * sizeof (T), (void *)ptr); |
64 | } |
129 | } |
65 | |
130 | |
66 | // a STL-compatible allocator that uses g_slice |
131 | // a STL-compatible allocator that uses g_slice |
67 | // boy, this is verbose |
132 | // boy, this is verbose |
68 | template<typename Tp> |
133 | template<typename Tp> |
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116 | { |
181 | { |
117 | p->~Tp (); |
182 | p->~Tp (); |
118 | } |
183 | } |
119 | }; |
184 | }; |
120 | |
185 | |
121 | struct refcounted |
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122 | { |
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123 | refcounted () : refcnt (0) { } |
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124 | // virtual ~refcounted (); |
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125 | void refcnt_inc () { ++refcnt; } |
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126 | void refcnt_dec () { --refcnt; } |
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127 | bool dead () { return refcnt == 0; } |
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128 | mutable int refcnt; |
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129 | #if 0 |
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130 | private: |
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131 | static refcounted *rc_first; |
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132 | refcounted *rc_next; |
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133 | #endif |
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134 | }; |
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135 | |
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136 | template<class T> |
186 | template<class T> |
137 | struct refptr |
187 | struct refptr |
138 | { |
188 | { |
139 | T *p; |
189 | T *p; |
140 | |
190 | |
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161 | T &operator * () const { return *p; } |
211 | T &operator * () const { return *p; } |
162 | T *operator ->() const { return p; } |
212 | T *operator ->() const { return p; } |
163 | |
213 | |
164 | operator T *() const { return p; } |
214 | operator T *() const { return p; } |
165 | }; |
215 | }; |
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216 | |
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217 | typedef refptr<maptile> maptile_ptr; |
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218 | typedef refptr<object> object_ptr; |
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219 | typedef refptr<archetype> arch_ptr; |
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220 | typedef refptr<client> client_ptr; |
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221 | typedef refptr<player> player_ptr; |
166 | |
222 | |
167 | struct str_hash |
223 | struct str_hash |
168 | { |
224 | { |
169 | std::size_t operator ()(const char *s) const |
225 | std::size_t operator ()(const char *s) const |
170 | { |
226 | { |
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196 | { |
252 | { |
197 | return !strcmp (a, b); |
253 | return !strcmp (a, b); |
198 | } |
254 | } |
199 | }; |
255 | }; |
200 | |
256 | |
201 | #include <vector> |
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202 | |
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203 | template<class obj> |
257 | template<class T> |
204 | struct unordered_vector : std::vector<obj, slice_allocator<obj> > |
258 | struct unordered_vector : std::vector<T, slice_allocator<T> > |
205 | { |
259 | { |
206 | typedef typename unordered_vector::iterator iterator; |
260 | typedef typename unordered_vector::iterator iterator; |
207 | |
261 | |
208 | void erase (unsigned int pos) |
262 | void erase (unsigned int pos) |
209 | { |
263 | { |
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214 | } |
268 | } |
215 | |
269 | |
216 | void erase (iterator i) |
270 | void erase (iterator i) |
217 | { |
271 | { |
218 | erase ((unsigned int )(i - this->begin ())); |
272 | erase ((unsigned int )(i - this->begin ())); |
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273 | } |
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274 | }; |
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275 | |
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276 | template<class T, int T::* index> |
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277 | struct object_vector : std::vector<T *, slice_allocator<T *> > |
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278 | { |
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279 | void insert (T *obj) |
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280 | { |
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281 | assert (!(obj->*index)); |
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282 | push_back (obj); |
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283 | obj->*index = this->size (); |
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284 | } |
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285 | |
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286 | void insert (T &obj) |
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287 | { |
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288 | insert (&obj); |
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289 | } |
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290 | |
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291 | void erase (T *obj) |
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292 | { |
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293 | assert (obj->*index); |
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294 | int pos = obj->*index; |
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295 | obj->*index = 0; |
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296 | |
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297 | if (pos < this->size ()) |
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298 | { |
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299 | (*this)[pos - 1] = (*this)[this->size () - 1]; |
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300 | (*this)[pos - 1]->*index = pos; |
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301 | } |
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302 | |
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303 | this->pop_back (); |
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304 | } |
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305 | |
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306 | void erase (T &obj) |
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307 | { |
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308 | errase (&obj); |
219 | } |
309 | } |
220 | }; |
310 | }; |
221 | |
311 | |
222 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
312 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
223 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
313 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
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238 | typedef double tstamp; |
328 | typedef double tstamp; |
239 | |
329 | |
240 | // return current time as timestampe |
330 | // return current time as timestampe |
241 | tstamp now (); |
331 | tstamp now (); |
242 | |
332 | |
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333 | int similar_direction (int a, int b); |
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334 | |
243 | #endif |
335 | #endif |
244 | |
336 | |