1 | /* |
1 | /* |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
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6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
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7 | * |
5 | * |
8 | * Deliantra is free software: you can redistribute it and/or modify |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
9 | * it under the terms of the GNU General Public License as published by |
7 | * the terms of the Affero GNU General Public License as published by the |
10 | * the Free Software Foundation, either version 3 of the License, or |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
11 | * (at your option) any later version. |
9 | * option) any later version. |
12 | * |
10 | * |
13 | * This program is distributed in the hope that it will be useful, |
11 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
17 | * |
15 | * |
18 | * You should have received a copy of the GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
17 | * and the GNU General Public License along with this program. If not, see |
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18 | * <http://www.gnu.org/licenses/>. |
20 | * |
19 | * |
21 | * The authors can be reached via e-mail to <support@deliantra.net> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
22 | */ |
21 | */ |
23 | |
22 | |
24 | /* |
23 | /* |
25 | * General convenience functions for crossfire. |
24 | * General convenience functions for deliantra. |
26 | */ |
25 | */ |
27 | |
26 | |
28 | #include <cstdlib> |
27 | #include <cstdlib> |
29 | #include <sys/types.h> |
28 | #include <sys/types.h> |
30 | #include <unistd.h> |
29 | #include <unistd.h> |
… | |
… | |
32 | #include <time.h> |
31 | #include <time.h> |
33 | #include <signal.h> |
32 | #include <signal.h> |
34 | |
33 | |
35 | #include <global.h> |
34 | #include <global.h> |
36 | #include <material.h> |
35 | #include <material.h> |
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36 | #include <object.h> |
37 | |
37 | |
38 | #include <sys/time.h> |
38 | #include <sys/time.h> |
39 | #include <sys/resource.h> |
39 | #include <sys/resource.h> |
40 | |
40 | |
41 | #include <glib.h> |
41 | #include <glib.h> |
42 | |
42 | |
43 | refcnt_base::refcnt_t refcnt_dummy; |
43 | refcnt_base::refcnt_t refcnt_dummy; |
44 | ssize_t slice_alloc; |
44 | ssize_t slice_alloc; |
45 | rand_gen rndm, rmg_rndm; |
45 | rand_gen rndm, rmg_rndm; |
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46 | |
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47 | #if !GCC_VERSION(3,4) |
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48 | int least_significant_bit (uint32_t x) |
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49 | { |
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50 | x &= -x; // this isolates the lowest bit |
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51 | |
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52 | int r = 0; |
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53 | |
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54 | if (x & 0xaaaaaaaa) r += 1; |
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55 | if (x & 0xcccccccc) r += 2; |
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56 | if (x & 0xf0f0f0f0) r += 4; |
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57 | if (x & 0xff00ff00) r += 8; |
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58 | if (x & 0xffff0000) r += 16; |
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59 | |
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60 | return r; |
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61 | } |
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62 | #endif |
46 | |
63 | |
47 | void |
64 | void |
48 | tausworthe_random_generator::seed (uint32_t seed) |
65 | tausworthe_random_generator::seed (uint32_t seed) |
49 | { |
66 | { |
50 | state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U; |
67 | state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U; |
51 | state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U; |
68 | state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U; |
52 | state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U; |
69 | state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U; |
53 | state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U; |
70 | state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U; |
54 | |
71 | |
55 | for (int i = 11; --i; ) |
72 | for (int i = 11; --i; ) |
56 | operator ()(); |
73 | next (); |
57 | } |
74 | } |
58 | |
75 | |
59 | uint32_t |
76 | uint32_t |
60 | tausworthe_random_generator::next () |
77 | tausworthe_random_generator::next () |
61 | { |
78 | { |
… | |
… | |
65 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
82 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
66 | |
83 | |
67 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
84 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
68 | } |
85 | } |
69 | |
86 | |
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87 | template<class generator> |
70 | uint32_t |
88 | uint32_t |
71 | tausworthe_random_generator::get_range (uint32_t num) |
89 | random_number_generator<generator>::get_range (uint32_t num) |
72 | { |
90 | { |
73 | return (next () * (uint64_t)num) >> 32U; |
91 | return (this->next () * (uint64_t)num) >> 32U; |
74 | } |
92 | } |
75 | |
93 | |
76 | // return a number within (min .. max) |
94 | // return a number within (min .. max) |
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95 | template<class generator> |
77 | int |
96 | int |
78 | tausworthe_random_generator::get_range (int r_min, int r_max) |
97 | random_number_generator<generator>::get_range (int r_min, int r_max) |
79 | { |
98 | { |
80 | return r_min + get_range (max (r_max - r_min + 1, 0)); |
99 | return r_min + get_range (max (r_max - r_min + 1, 0)); |
81 | } |
100 | } |
82 | |
101 | |
83 | /* |
102 | template struct random_number_generator<tausworthe_random_generator>; |
84 | * The random functions here take luck into account when rolling random |
103 | template struct random_number_generator<xorshift_random_generator>; |
85 | * dice or numbers. This function has less of an impact the larger the |
104 | |
86 | * difference becomes in the random numbers. IE, the effect is lessened |
105 | /******************************************************************************/ |
87 | * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, |
106 | |
88 | * to specifically disable luck in certain rolls, simply by making the |
107 | /* Checks a player-provided string which will become the msg property of |
89 | * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) |
108 | * an object for dangerous input. |
90 | */ |
109 | */ |
91 | |
110 | bool |
92 | /* |
111 | msg_is_safe (const char *msg) |
93 | * Roll a random number between min and max. Uses op to determine luck, |
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94 | * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. |
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95 | * Generally, op should be the player/caster/hitter requesting the roll, |
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96 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
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97 | */ |
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98 | int |
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99 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
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100 | { |
112 | { |
101 | r_max = max (r_min, r_max); |
113 | bool safe = true; |
102 | |
114 | |
103 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
115 | /* Trying to cheat by getting data into the object */ |
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116 | if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1) |
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117 | || strstr (msg, "\nendmsg")) |
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118 | safe = false; |
104 | |
119 | |
105 | if (op->type == PLAYER) |
120 | /* Trying to make the object talk, and potentially access arbitrary code */ |
106 | { |
121 | if (object::msg_has_dialogue (msg)) |
107 | int luck = op->stats.luck; |
122 | safe = false; |
108 | |
123 | |
109 | if (rndm (base) < min (10, abs (luck))) |
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110 | { |
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111 | //TODO: take luck into account |
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112 | } |
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113 | } |
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114 | |
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115 | return rndm (r_min, r_max); |
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116 | } |
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117 | |
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118 | /* |
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119 | * This is a 64 bit version of random_roll above. This is needed |
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120 | * for exp loss calculations for players changing religions. |
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121 | */ |
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122 | sint64 |
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123 | random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad) |
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124 | { |
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125 | sint64 omin = r_min; |
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126 | sint64 range = max (0, r_max - r_min + 1); |
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127 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
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128 | |
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129 | /* |
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130 | * Make a call to get two 32 bit unsigned random numbers, and just to |
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131 | * a little bitshifting. |
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132 | */ |
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133 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
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134 | |
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135 | if (op->type != PLAYER) |
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136 | return ((ran % range) + r_min); |
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137 | |
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138 | int luck = op->stats.luck; |
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139 | |
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140 | if (rndm (base) < min (10, abs (luck))) |
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141 | { |
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142 | /* we have a winner */ |
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143 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
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144 | range -= luck; |
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145 | if (range < 1) |
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146 | return (omin); /*check again */ |
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147 | |
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148 | ((goodbad) ? (r_min += luck) : (range)); |
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149 | |
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150 | return (max (omin, min (r_max, (ran % range) + r_min))); |
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151 | } |
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152 | |
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153 | return ran % range + r_min; |
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154 | } |
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155 | |
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156 | /* |
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157 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
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158 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
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159 | * Generally, op should be the player/caster/hitter requesting the roll, |
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160 | * not the recipient (ie, the poor slob getting hit). |
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161 | * The args are num D size (ie 4d6) [garbled 20010916] |
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162 | */ |
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163 | int |
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164 | die_roll (int num, int size, const object *op, int goodbad) |
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165 | { |
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166 | int min, luck, total, i, gotlucky; |
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167 | |
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168 | int diff = size; |
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169 | min = 1; |
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170 | luck = total = gotlucky = 0; |
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171 | int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
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172 | |
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173 | if (size < 2 || diff < 1) |
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174 | { |
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175 | LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); |
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176 | return num; /* avoids a float exception */ |
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177 | } |
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178 | |
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179 | if (op->type == PLAYER) |
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180 | luck = op->stats.luck; |
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181 | |
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182 | for (i = 0; i < num; i++) |
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183 | { |
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184 | if (rndm (base) < MIN (10, abs (luck)) && !gotlucky) |
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185 | { |
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186 | /* we have a winner */ |
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187 | gotlucky++; |
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188 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
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189 | diff -= luck; |
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190 | if (diff < 1) |
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191 | return (num); /*check again */ |
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192 | ((goodbad) ? (min += luck) : (diff)); |
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193 | total += MAX (1, MIN (size, rndm (diff) + min)); |
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194 | } |
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195 | else |
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196 | total += rndm (size) + 1; |
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197 | } |
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198 | |
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199 | return total; |
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200 | } |
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201 | |
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202 | /* convert materialname to materialtype_t */ |
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203 | |
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204 | materialtype_t * |
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205 | name_to_material (const shstr &name) |
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206 | { |
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207 | for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next) |
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208 | if (name == mt->name) |
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209 | return mt; |
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210 | |
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211 | return 0; |
124 | return safe; |
212 | } |
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213 | |
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214 | /* when doing transmutation of objects, we have to recheck the resistances, |
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215 | * as some that did not apply previously, may apply now. |
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216 | */ |
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217 | void |
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218 | transmute_materialname (object *op, const object *change) |
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219 | { |
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220 | materialtype_t *mt; |
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221 | int j; |
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222 | |
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223 | if (op->materialname == NULL) |
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224 | return; |
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225 | |
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226 | if (change->materialname != NULL && strcmp (op->materialname, change->materialname)) |
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227 | return; |
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228 | |
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229 | if (!op->is_armor ()) |
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230 | return; |
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231 | |
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232 | mt = name_to_material (op->materialname); |
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233 | if (!mt) |
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234 | { |
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235 | LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname); |
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236 | return; |
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237 | } |
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238 | |
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239 | for (j = 0; j < NROFATTACKS; j++) |
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240 | if (op->resist[j] == 0 && change->resist[j] != 0) |
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241 | { |
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242 | op->resist[j] += mt->mod[j]; |
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243 | if (op->resist[j] > 100) |
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244 | op->resist[j] = 100; |
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245 | if (op->resist[j] < -100) |
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246 | op->resist[j] = -100; |
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247 | } |
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248 | } |
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249 | |
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250 | /* set the materialname and type for an item */ |
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251 | void |
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252 | set_materialname (object *op, int difficulty, materialtype_t *nmt) |
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253 | { |
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254 | materialtype_t *mt, *lmt; |
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255 | |
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256 | if (op->materialname != NULL) |
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257 | return; |
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258 | |
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259 | if (nmt == NULL) |
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260 | { |
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261 | lmt = NULL; |
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262 | |
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263 | for (mt = materialt; mt && mt->next; mt = mt->next) |
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264 | if (op->materials & mt->material && rndm (1, 100) <= mt->chance && |
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265 | difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0)) |
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266 | { |
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267 | lmt = mt; |
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268 | if (!(op->is_weapon () || op->is_armor ())) |
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269 | break; |
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270 | } |
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271 | } |
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272 | else |
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273 | lmt = nmt; |
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274 | |
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275 | if (lmt != NULL) |
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276 | { |
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277 | if (op->stats.dam && op->is_weapon ()) |
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278 | { |
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279 | op->stats.dam += lmt->damage; |
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280 | if (op->stats.dam < 1) |
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281 | op->stats.dam = 1; |
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282 | } |
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283 | |
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284 | if (op->stats.sp && op->type == BOW) |
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285 | op->stats.sp += lmt->sp; |
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286 | if (op->stats.wc && op->is_weapon ()) |
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287 | op->stats.wc += lmt->wc; |
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288 | if (op->is_armor ()) |
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289 | { |
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290 | if (op->stats.ac) |
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291 | op->stats.ac += lmt->ac; |
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292 | |
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293 | for (int j = 0; j < NROFATTACKS; j++) |
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294 | if (op->resist[j] != 0) |
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295 | { |
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296 | op->resist[j] += lmt->mod[j]; |
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297 | if (op->resist[j] > 100) |
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298 | op->resist[j] = 100; |
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299 | if (op->resist[j] < -100) |
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300 | op->resist[j] = -100; |
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301 | } |
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302 | } |
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303 | |
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304 | op->materialname = lmt->name; |
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305 | /* dont make it unstackable if it doesn't need to be */ |
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306 | if (op->is_weapon () || op->is_armor ()) |
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307 | { |
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308 | op->weight = (op->weight * lmt->weight) / 100; |
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309 | op->value = (op->value * lmt->value) / 100; |
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310 | } |
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311 | } |
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312 | } |
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313 | |
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314 | /* |
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315 | * Strip out the media tags from a String. |
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316 | * Warning the input string will contain the result string |
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317 | */ |
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318 | void |
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319 | strip_media_tag (char *message) |
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320 | { |
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321 | int in_tag = 0; |
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322 | char *dest; |
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323 | char *src; |
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324 | |
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325 | src = dest = message; |
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326 | while (*src != '\0') |
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327 | { |
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328 | if (*src == '[') |
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329 | { |
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330 | in_tag = 1; |
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331 | } |
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332 | else if (in_tag && (*src == ']')) |
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333 | in_tag = 0; |
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334 | else if (!in_tag) |
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335 | { |
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336 | *dest = *src; |
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337 | dest++; |
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338 | } |
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339 | src++; |
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340 | } |
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341 | *dest = '\0'; |
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342 | } |
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343 | |
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344 | const char * |
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345 | strrstr (const char *haystack, const char *needle) |
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346 | { |
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347 | const char *lastneedle; |
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348 | |
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349 | lastneedle = NULL; |
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350 | while ((haystack = strstr (haystack, needle)) != NULL) |
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351 | { |
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352 | lastneedle = haystack; |
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353 | haystack++; |
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354 | } |
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355 | return lastneedle; |
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356 | |
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357 | } |
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358 | |
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359 | #define EOL_SIZE (sizeof("\n")-1) |
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360 | void |
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361 | strip_endline (char *buf) |
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362 | { |
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363 | if (strlen (buf) < sizeof ("\n")) |
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364 | { |
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365 | return; |
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366 | } |
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367 | if (!strcmp (buf + strlen (buf) - EOL_SIZE, "\n")) |
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368 | buf[strlen (buf) - EOL_SIZE] = '\0'; |
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369 | } |
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370 | |
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371 | /** |
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372 | * Replace in string src all occurrences of key by replacement. The resulting |
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373 | * string is put into result; at most resultsize characters (including the |
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374 | * terminating null character) will be written to result. |
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375 | */ |
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376 | void |
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377 | replace (const char *src, const char *key, const char *replacement, char *result, size_t resultsize) |
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378 | { |
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379 | size_t resultlen; |
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380 | size_t keylen; |
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381 | |
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382 | /* special case to prevent infinite loop if key==replacement=="" */ |
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383 | if (strcmp (key, replacement) == 0) |
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384 | { |
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385 | snprintf (result, resultsize, "%s", src); |
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386 | return; |
|
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387 | } |
|
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388 | |
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389 | keylen = strlen (key); |
|
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390 | |
|
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391 | resultlen = 0; |
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392 | while (*src != '\0' && resultlen + 1 < resultsize) |
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393 | { |
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394 | if (strncmp (src, key, keylen) == 0) |
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395 | { |
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396 | snprintf (result + resultlen, resultsize - resultlen, "%s", replacement); |
|
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397 | resultlen += strlen (result + resultlen); |
|
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398 | src += keylen; |
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399 | } |
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400 | else |
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401 | { |
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402 | result[resultlen++] = *src++; |
|
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403 | } |
|
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404 | } |
|
|
405 | result[resultlen] = '\0'; |
|
|
406 | } |
|
|
407 | |
|
|
408 | /** |
|
|
409 | * Taking a string as an argument, mutate it into a string that looks like a list. |
|
|
410 | * a 'list' for the purposes here, is a string of items, seperated by commas, except |
|
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411 | * for the last entry, which has an 'and' before it, and a full stop (period) after it. |
|
|
412 | * This function will also strip all trailing non alphanumeric characters. |
|
|
413 | * It does not insert an oxford comma. |
|
|
414 | */ |
|
|
415 | void |
|
|
416 | make_list_like (char *input) |
|
|
417 | { |
|
|
418 | char *p, tmp[MAX_BUF]; |
|
|
419 | int i; |
|
|
420 | |
|
|
421 | if (!input || strlen (input) > MAX_BUF - 5) |
|
|
422 | return; |
|
|
423 | /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */ |
|
|
424 | |
|
|
425 | strncpy (tmp, input, MAX_BUF - 5); |
|
|
426 | /*trim all trailing commas, spaces etc. */ |
|
|
427 | for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--) |
|
|
428 | tmp[i] = '\0'; |
|
|
429 | |
|
|
430 | strcat (tmp, "."); |
|
|
431 | |
|
|
432 | p = strrchr (tmp, ','); |
|
|
433 | if (p) |
|
|
434 | { |
|
|
435 | *p = '\0'; |
|
|
436 | strcpy (input, tmp); |
|
|
437 | p++; |
|
|
438 | strcat (input, " and"); |
|
|
439 | strcat (input, p); |
|
|
440 | } |
|
|
441 | else |
|
|
442 | strcpy (input, tmp); |
|
|
443 | |
|
|
444 | return; |
|
|
445 | } |
125 | } |
446 | |
126 | |
447 | ///////////////////////////////////////////////////////////////////////////// |
127 | ///////////////////////////////////////////////////////////////////////////// |
448 | |
128 | |
449 | void |
129 | void |
450 | fork_abort (const char *msg) |
130 | fork_abort (const char *msg) |
451 | { |
131 | { |
452 | if (!fork ()) |
132 | if (!fork ()) |
453 | { |
133 | { |
454 | fprintf (stderr, "background fork_abort in progress, remove me when debugged.\n");//D |
|
|
455 | |
|
|
456 | signal (SIGINT , SIG_IGN); |
134 | signal (SIGINT , SIG_IGN); |
457 | signal (SIGTERM, SIG_IGN); |
135 | signal (SIGTERM, SIG_IGN); |
458 | signal (SIGABRT, SIG_IGN); |
136 | signal (SIGABRT, SIG_IGN); |
459 | |
137 | |
460 | signal (SIGSEGV, SIG_DFL); |
138 | signal (SIGSEGV, SIG_DFL); |
… | |
… | |
556 | |
234 | |
557 | #endif |
235 | #endif |
558 | |
236 | |
559 | /******************************************************************************/ |
237 | /******************************************************************************/ |
560 | |
238 | |
|
|
239 | int |
561 | void assign (char *dst, const char *src, int maxlen) |
240 | assign (char *dst, const char *src, int maxsize) |
562 | { |
241 | { |
563 | if (!src) |
242 | if (!src) |
564 | src = ""; |
243 | src = ""; |
565 | |
244 | |
566 | int len = strlen (src); |
245 | int len = strlen (src); |
567 | |
246 | |
568 | if (len >= maxlen - 1) |
247 | if (len >= maxsize) |
569 | { |
248 | { |
570 | if (maxlen <= 4) |
249 | if (maxsize <= 4) |
571 | { |
250 | { |
572 | memset (dst, '.', maxlen - 1); |
251 | memset (dst, '.', maxsize - 2); |
573 | dst [maxlen - 1] = 0; |
252 | dst [maxsize - 1] = 0; |
574 | } |
253 | } |
575 | else |
254 | else |
576 | { |
255 | { |
577 | memcpy (dst, src, maxlen - 4); |
256 | memcpy (dst, src, maxsize - 4); |
578 | memcpy (dst + maxlen - 4, "...", 4); |
257 | memcpy (dst + maxsize - 4, "...", 4); |
579 | } |
258 | } |
|
|
259 | |
|
|
260 | len = maxsize; |
580 | } |
261 | } |
581 | else |
262 | else |
582 | memcpy (dst, src, len + 1); |
263 | memcpy (dst, src, ++len); |
583 | } |
|
|
584 | |
264 | |
585 | const char * |
265 | return len; |
|
|
266 | } |
|
|
267 | |
|
|
268 | char * |
|
|
269 | vformat (const char *format, va_list ap) |
|
|
270 | { |
|
|
271 | static dynbuf_text buf; buf.clear (); |
|
|
272 | buf.vprintf (format, ap); |
|
|
273 | return buf; |
|
|
274 | } |
|
|
275 | |
|
|
276 | char * |
586 | format (const char *format, ...) |
277 | format (const char *format, ...) |
587 | { |
278 | { |
588 | static dynbuf_text buf; |
|
|
589 | |
|
|
590 | buf.clear (); |
|
|
591 | |
|
|
592 | va_list ap; |
279 | va_list ap; |
593 | va_start (ap, format); |
280 | va_start (ap, format); |
594 | buf.vprintf (format, ap); |
281 | char *buf = vformat (format, ap); |
595 | va_end (ap); |
282 | va_end (ap); |
596 | |
283 | |
597 | return buf; |
284 | return buf; |
598 | } |
285 | } |
599 | |
286 | |