1 | /* |
1 | /* |
2 | * CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
3 | * |
3 | * |
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 | * Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
7 | * |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
8 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
9 | * it under the terms of the GNU General Public License as published by |
9 | * under the terms of the GNU General Public License as published by the Free |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | * Software Foundation; either version 2 of the License, or (at your option) |
11 | * (at your option) any later version. |
11 | * any later version. |
12 | * |
12 | * |
13 | * 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, but |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
16 | * GNU General Public License for more details. |
16 | * for more details. |
17 | * |
17 | * |
18 | * 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 along |
19 | * along with this program; if not, write to the Free Software |
19 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
21 | * |
21 | * |
22 | * The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
23 | */ |
23 | */ |
24 | |
24 | |
25 | /* |
25 | /* |
26 | * General convenience functions for crossfire. |
26 | * General convenience functions for crossfire. |
27 | */ |
27 | */ |
… | |
… | |
95 | int |
95 | int |
96 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
96 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
97 | { |
97 | { |
98 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
98 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
99 | |
99 | |
100 | if (r_max < 1 || r_max < r_min) |
100 | if (r_max < r_min) |
101 | { |
101 | { |
102 | LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max); |
102 | LOG (llevError | logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max); |
103 | return r_min; |
103 | return r_min; |
104 | } |
104 | } |
105 | |
105 | |
106 | if (op->type == PLAYER) |
106 | if (op->type == PLAYER) |
107 | { |
107 | { |
… | |
… | |
121 | * for exp loss calculations for players changing religions. |
121 | * for exp loss calculations for players changing religions. |
122 | */ |
122 | */ |
123 | sint64 |
123 | sint64 |
124 | random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) |
124 | random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) |
125 | { |
125 | { |
126 | sint64 omin, diff, luck, ran; |
|
|
127 | int base; |
|
|
128 | |
|
|
129 | omin = min; |
126 | sint64 omin = min; |
130 | diff = max - min + 1; |
127 | sint64 diff = max - min + 1; |
131 | ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ |
128 | int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
132 | |
129 | |
133 | if (max < 1 || diff < 1) |
130 | if (diff < 0) |
134 | { |
131 | { |
135 | LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max); |
132 | LOG (llevError | logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max); |
136 | return (min); /* avoids a float exception */ |
133 | return (min); /* avoids a float exception */ |
137 | } |
134 | } |
138 | |
135 | |
139 | /* |
136 | /* |
140 | * Make a call to get two 32 bit unsigned random numbers, and just to |
137 | * Make a call to get two 32 bit unsigned random numbers, and just to |
141 | * a little bitshifting. |
138 | * a little bitshifting. |
142 | */ |
139 | */ |
143 | ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
140 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
144 | |
141 | |
145 | if (op->type != PLAYER) |
142 | if (op->type != PLAYER) |
146 | return ((ran % diff) + min); |
143 | return ((ran % diff) + min); |
147 | |
144 | |
148 | luck = op->stats.luck; |
145 | int luck = op->stats.luck; |
|
|
146 | |
149 | if (rndm (base) < MIN (10, abs (luck))) |
147 | if (rndm (base) < MIN (10, abs (luck))) |
150 | { |
148 | { |
151 | /* we have a winner */ |
149 | /* we have a winner */ |
152 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
150 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
153 | diff -= luck; |
151 | diff -= luck; |
154 | if (diff < 1) |
152 | if (diff < 1) |
155 | return (omin); /*check again */ |
153 | return (omin); /*check again */ |
|
|
154 | |
156 | ((goodbad) ? (min += luck) : (diff)); |
155 | ((goodbad) ? (min += luck) : (diff)); |
157 | |
156 | |
158 | return (MAX (omin, MIN (max, (ran % diff) + min))); |
157 | return (MAX (omin, MIN (max, (ran % diff) + min))); |
159 | } |
158 | } |
160 | |
159 | |
161 | return ((ran % diff) + min); |
160 | return ran % diff + min; |
162 | } |
161 | } |
163 | |
162 | |
164 | /* |
163 | /* |
165 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
164 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
166 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
165 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
167 | * Generally, op should be the player/caster/hitter requesting the roll, |
166 | * Generally, op should be the player/caster/hitter requesting the roll, |
168 | * not the recipient (ie, the poor slob getting hit). |
167 | * not the recipient (ie, the poor slob getting hit). |
169 | * The args are num D size (ie 4d6) [garbled 20010916] |
168 | * The args are num D size (ie 4d6) [garbled 20010916] |
170 | */ |
169 | */ |
171 | |
|
|
172 | int |
170 | int |
173 | die_roll (int num, int size, const object *op, int goodbad) |
171 | die_roll (int num, int size, const object *op, int goodbad) |
174 | { |
172 | { |
175 | int min, diff, luck, total, i, gotlucky, base; |
173 | int min, luck, total, i, gotlucky; |
176 | |
174 | |
177 | diff = size; |
175 | int diff = size; |
178 | min = 1; |
176 | min = 1; |
179 | luck = total = gotlucky = 0; |
177 | luck = total = gotlucky = 0; |
180 | ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ |
178 | int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
|
|
179 | |
181 | if (size < 2 || diff < 1) |
180 | if (size < 2 || diff < 1) |
182 | { |
181 | { |
183 | LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); |
182 | LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); |
184 | return (num); /* avoids a float exception */ |
183 | return num; /* avoids a float exception */ |
185 | } |
184 | } |
186 | |
185 | |
187 | if (op->type == PLAYER) |
186 | if (op->type == PLAYER) |
188 | luck = op->stats.luck; |
187 | luck = op->stats.luck; |
189 | |
188 | |
… | |
… | |
553 | fork_abort (const char *msg) |
552 | fork_abort (const char *msg) |
554 | { |
553 | { |
555 | if (!fork ()) |
554 | if (!fork ()) |
556 | { |
555 | { |
557 | signal (SIGABRT, SIG_DFL); |
556 | signal (SIGABRT, SIG_DFL); |
|
|
557 | // try to put corefiles into a subdirectory, if existing, to allow |
|
|
558 | // an administrator to reduce the I/O load. |
|
|
559 | chdir ("cores"); |
558 | abort (); |
560 | abort (); |
559 | } |
561 | } |
560 | |
562 | |
561 | LOG (llevError, "fork abort: %s\n", msg); |
563 | LOG (llevError, "fork abort: %s\n", msg); |
562 | } |
564 | } |