1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
|
|
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) any later version. |
11 | |
12 | * |
12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
16 | |
17 | * |
17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | |
21 | * |
21 | The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | */ |
23 | */ |
23 | |
24 | |
24 | /* |
25 | /* |
25 | * General convenience functions for crossfire. |
26 | * General convenience functions for crossfire. |
26 | */ |
27 | */ |
|
|
28 | |
|
|
29 | #include <cstdlib> |
|
|
30 | #include <sys/types.h> |
|
|
31 | #include <unistd.h> |
|
|
32 | #include <sys/time.h> |
|
|
33 | #include <time.h> |
|
|
34 | #include <signal.h> |
27 | |
35 | |
28 | #include <global.h> |
36 | #include <global.h> |
29 | #include <funcpoint.h> |
37 | #include <funcpoint.h> |
30 | #include <material.h> |
38 | #include <material.h> |
31 | |
39 | |
32 | #include <sys/time.h> |
|
|
33 | #include <time.h> |
|
|
34 | #include <glib.h> |
40 | #include <glib.h> |
|
|
41 | |
|
|
42 | rand_gen rndm; |
|
|
43 | |
|
|
44 | void |
|
|
45 | tausworthe_random_generator::seed (uint32_t seed) |
|
|
46 | { |
|
|
47 | state [0] = max ( 2, seed * 69069U); |
|
|
48 | state [1] = max ( 8, state [0] * 69069U); |
|
|
49 | state [2] = max ( 16, state [1] * 69069U); |
|
|
50 | state [3] = max (128, state [2] * 69069U); |
|
|
51 | |
|
|
52 | for (int i = 11; --i; ) |
|
|
53 | operator ()(); |
|
|
54 | } |
|
|
55 | |
|
|
56 | uint32_t |
|
|
57 | tausworthe_random_generator::next () |
|
|
58 | { |
|
|
59 | state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U); |
|
|
60 | state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U); |
|
|
61 | state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U); |
|
|
62 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
|
|
63 | |
|
|
64 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
|
|
65 | } |
|
|
66 | |
|
|
67 | uint32_t |
|
|
68 | tausworthe_random_generator::get_range (uint32_t r_max) |
|
|
69 | { |
|
|
70 | return next () % r_max; |
|
|
71 | } |
|
|
72 | |
|
|
73 | // return a number within (min .. max) |
|
|
74 | int |
|
|
75 | tausworthe_random_generator::get_range (int r_min, int r_max) |
|
|
76 | { |
|
|
77 | return r_min + (*this) (max (r_max - r_min + 1, 1)); |
|
|
78 | } |
35 | |
79 | |
36 | /* |
80 | /* |
37 | * The random functions here take luck into account when rolling random |
81 | * The random functions here take luck into account when rolling random |
38 | * dice or numbers. This function has less of an impact the larger the |
82 | * dice or numbers. This function has less of an impact the larger the |
39 | * difference becomes in the random numbers. IE, the effect is lessened |
83 | * difference becomes in the random numbers. IE, the effect is lessened |
… | |
… | |
46 | * Roll a random number between min and max. Uses op to determine luck, |
90 | * Roll a random number between min and max. Uses op to determine luck, |
47 | * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. |
91 | * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. |
48 | * Generally, op should be the player/caster/hitter requesting the roll, |
92 | * Generally, op should be the player/caster/hitter requesting the roll, |
49 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
93 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
50 | */ |
94 | */ |
51 | |
|
|
52 | int |
95 | int |
53 | random_roll (int min, int max, const object *op, int goodbad) |
96 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
54 | { |
97 | { |
55 | int omin, diff, luck, base, ran; |
98 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
56 | |
99 | |
57 | omin = min; |
100 | if (r_max < 1 || r_max < r_min) |
58 | diff = max - min + 1; |
|
|
59 | ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ |
|
|
60 | |
|
|
61 | if (max < 1 || diff < 1) |
|
|
62 | { |
101 | { |
63 | LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); |
102 | LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max); |
64 | return (min); /* avoids a float exception */ |
103 | return r_min; |
65 | } |
104 | } |
66 | |
105 | |
67 | ran = RANDOM (); |
|
|
68 | |
|
|
69 | if (op->type != PLAYER) |
106 | if (op->type == PLAYER) |
70 | return ((ran % diff) + min); |
107 | { |
71 | |
|
|
72 | luck = op->stats.luck; |
108 | int luck = op->stats.luck; |
73 | if (RANDOM () % base < MIN (10, abs (luck))) |
109 | |
|
|
110 | if (rndm (base) < min (10, abs (luck))) |
|
|
111 | { |
|
|
112 | //TODO: take luck into account |
|
|
113 | } |
74 | { |
114 | } |
75 | /* we have a winner */ |
|
|
76 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
|
|
77 | diff -= luck; |
|
|
78 | if (diff < 1) |
|
|
79 | return (omin); /*check again */ |
|
|
80 | ((goodbad) ? (min += luck) : (diff)); |
|
|
81 | |
115 | |
82 | return (MAX (omin, MIN (max, (ran % diff) + min))); |
116 | return rndm (r_min, r_max); |
83 | } |
|
|
84 | return ((ran % diff) + min); |
|
|
85 | } |
117 | } |
86 | |
118 | |
87 | /* |
119 | /* |
88 | * This is a 64 bit version of random_roll above. This is needed |
120 | * This is a 64 bit version of random_roll above. This is needed |
89 | * for exp loss calculations for players changing religions. |
121 | * for exp loss calculations for players changing religions. |
… | |
… | |
176 | } |
208 | } |
177 | } |
209 | } |
178 | return (total); |
210 | return (total); |
179 | } |
211 | } |
180 | |
212 | |
181 | /* |
|
|
182 | * Another convenience function. Returns a number between min and max. |
|
|
183 | * It is suggested one use these functions rather than RANDOM()%, as it |
|
|
184 | * would appear that a number of off-by-one-errors exist due to improper |
|
|
185 | * use of %. This should also prevent SIGFPE. |
|
|
186 | */ |
|
|
187 | |
|
|
188 | int |
|
|
189 | rndm (int min, int max) |
|
|
190 | { |
|
|
191 | int diff; |
|
|
192 | |
|
|
193 | diff = max - min + 1; |
|
|
194 | if (max < 1 || diff < 1) |
|
|
195 | return (min); |
|
|
196 | |
|
|
197 | return (RANDOM () % diff + min); |
|
|
198 | } |
|
|
199 | |
|
|
200 | /* decay and destroy persihable items in a map */ |
213 | /* decay and destroy perishable items in a map */ |
201 | |
|
|
202 | void |
214 | void |
203 | decay_objects (maptile *m) |
215 | maptile::decay_objects () |
204 | { |
216 | { |
205 | int x, y, destroy; |
217 | if (!spaces) |
206 | object *op, *otmp; |
|
|
207 | |
|
|
208 | if (m->unique) |
|
|
209 | return; |
218 | return; |
210 | |
219 | |
211 | for (x = 0; x < m->width; x++) |
220 | for (mapspace *ms = spaces + size (); ms-- > spaces; ) |
212 | for (y = 0; y < m->height; y++) |
221 | for (object *above, *op = ms->bot; op; op = above) |
213 | for (op = GET_MAP_OB (m, x, y); op; op = otmp) |
|
|
214 | { |
222 | { |
|
|
223 | above = op->above; |
|
|
224 | |
215 | destroy = 0; |
225 | bool destroy = 0; |
216 | otmp = op->above; |
226 | |
|
|
227 | // do not decay anything above unique floor tiles (yet :) |
217 | if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE)) |
228 | if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE)) |
218 | break; |
229 | break; |
|
|
230 | |
219 | if (QUERY_FLAG (op, FLAG_IS_FLOOR) |
231 | if (QUERY_FLAG (op, FLAG_IS_FLOOR) |
220 | || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) |
232 | || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) |
221 | || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) |
233 | || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) |
222 | || QUERY_FLAG (op, FLAG_UNIQUE) |
234 | || QUERY_FLAG (op, FLAG_UNIQUE) |
223 | || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) |
235 | || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) |
224 | || QUERY_FLAG (op, FLAG_UNPAID) |
236 | || QUERY_FLAG (op, FLAG_UNPAID) |
225 | || op->is_alive ()) |
237 | || op->is_alive ()) |
226 | continue; |
238 | ; // do not decay |
227 | |
|
|
228 | /* otherwise, we decay and destroy */ |
|
|
229 | if (op->is_weapon ()) |
239 | else if (op->is_weapon ()) |
230 | { |
240 | { |
231 | op->stats.dam--; |
241 | op->stats.dam--; |
232 | if (op->stats.dam < 0) |
242 | if (op->stats.dam < 0) |
233 | destroy = 1; |
243 | destroy = 1; |
234 | } |
244 | } |
235 | else if (op->is_armor ()) |
245 | else if (op->is_armor ()) |
236 | { |
246 | { |
237 | op->stats.ac--; |
247 | op->stats.ac--; |
238 | if (op->stats.ac < 0) |
248 | if (op->stats.ac < 0) |
239 | destroy = 1; |
249 | destroy = 1; |
240 | } |
250 | } |
241 | else if (op->type == FOOD) |
251 | else if (op->type == FOOD) |
242 | { |
252 | { |
243 | op->stats.food -= rndm (5, 20); |
253 | op->stats.food -= rndm (5, 20); |
244 | if (op->stats.food < 0) |
254 | if (op->stats.food < 0) |
245 | destroy = 1; |
255 | destroy = 1; |
246 | } |
256 | } |
247 | else |
257 | else |
248 | { |
258 | { |
249 | if (op->material & M_PAPER || op->material & M_LEATHER || |
259 | int mat = op->material; |
250 | op->material & M_WOOD || op->material & M_ORGANIC || op->material & M_CLOTH || op->material & M_LIQUID) |
260 | |
|
|
261 | if (mat & M_PAPER |
|
|
262 | || mat & M_LEATHER |
|
|
263 | || mat & M_WOOD |
|
|
264 | || mat & M_ORGANIC |
|
|
265 | || mat & M_CLOTH |
|
|
266 | || mat & M_LIQUID |
|
|
267 | || (mat & M_IRON && rndm (1, 5) == 1) |
|
|
268 | || (mat & M_GLASS && rndm (1, 2) == 1) |
|
|
269 | || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1) |
|
|
270 | || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1) |
|
|
271 | || (mat & M_ICE && temp > 32)) |
251 | destroy = 1; |
272 | destroy = 1; |
252 | if (op->material & M_IRON && rndm (1, 5) == 1) |
|
|
253 | destroy = 1; |
|
|
254 | if (op->material & M_GLASS && rndm (1, 2) == 1) |
|
|
255 | destroy = 1; |
|
|
256 | if ((op->material & M_STONE || op->material & M_ADAMANT) && rndm (1, 10) == 1) |
|
|
257 | destroy = 1; |
|
|
258 | if ((op->material & M_SOFT_METAL || op->material & M_BONE) && rndm (1, 3) == 1) |
|
|
259 | destroy = 1; |
|
|
260 | if (op->material & M_ICE && m->temp > 32) |
|
|
261 | destroy = 1; |
|
|
262 | } |
273 | } |
|
|
274 | |
263 | /* adjust overall chance below */ |
275 | /* adjust overall chance below */ |
264 | if (destroy && rndm (0, 1)) |
276 | if (destroy && rndm (0, 1)) |
265 | op->destroy (); |
277 | op->destroy (); |
266 | } |
278 | } |
267 | } |
279 | } |
268 | |
280 | |
269 | /* convert materialname to materialtype_t */ |
281 | /* convert materialname to materialtype_t */ |
270 | |
282 | |
271 | materialtype_t * |
283 | materialtype_t * |
… | |
… | |
544 | return; |
556 | return; |
545 | } |
557 | } |
546 | |
558 | |
547 | ///////////////////////////////////////////////////////////////////////////// |
559 | ///////////////////////////////////////////////////////////////////////////// |
548 | |
560 | |
|
|
561 | void |
|
|
562 | fork_abort (const char *msg) |
|
|
563 | { |
|
|
564 | if (!fork ()) |
|
|
565 | { |
|
|
566 | signal (SIGABRT, SIG_DFL); |
|
|
567 | abort (); |
|
|
568 | } |
|
|
569 | |
|
|
570 | LOG (llevError, "fork abort: %s\n", msg); |
|
|
571 | } |
|
|
572 | |
549 | void *salloc_ (int n) throw (std::bad_alloc) |
573 | void *salloc_ (int n) throw (std::bad_alloc) |
550 | { |
574 | { |
551 | void *ptr = g_slice_alloc (n); |
575 | void *ptr = g_slice_alloc (n); |
552 | |
576 | |
553 | if (!ptr) |
577 | if (!ptr) |
… | |
… | |
598 | |
622 | |
599 | gettimeofday (&tv, 0); |
623 | gettimeofday (&tv, 0); |
600 | return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6); |
624 | return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6); |
601 | } |
625 | } |
602 | |
626 | |
|
|
627 | int |
|
|
628 | similar_direction (int a, int b) |
|
|
629 | { |
|
|
630 | if (!a || !b) |
|
|
631 | return 0; |
|
|
632 | |
|
|
633 | int diff = (b - a) & 7; |
|
|
634 | return diff <= 1 || diff >= 7; |
|
|
635 | } |
|
|
636 | |