| … | |
… | |
| 93 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
93 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
| 94 | */ |
94 | */ |
| 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 | { |
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98 | r_max = max (r_min, r_max); |
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99 | |
| 98 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
100 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
| 99 | |
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| 100 | if (r_max < r_min) |
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| 101 | { |
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| 102 | LOG (llevError | logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max); |
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| 103 | return r_min; |
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| 104 | } |
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| 105 | |
101 | |
| 106 | if (op->type == PLAYER) |
102 | if (op->type == PLAYER) |
| 107 | { |
103 | { |
| 108 | int luck = op->stats.luck; |
104 | int luck = op->stats.luck; |
| 109 | |
105 | |
| … | |
… | |
| 119 | /* |
115 | /* |
| 120 | * This is a 64 bit version of random_roll above. This is needed |
116 | * This is a 64 bit version of random_roll above. This is needed |
| 121 | * for exp loss calculations for players changing religions. |
117 | * for exp loss calculations for players changing religions. |
| 122 | */ |
118 | */ |
| 123 | sint64 |
119 | sint64 |
| 124 | random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) |
120 | random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad) |
| 125 | { |
121 | { |
| 126 | sint64 omin = min; |
122 | sint64 omin = r_min; |
| 127 | sint64 diff = max - min + 1; |
123 | sint64 range = max (0, r_max - r_min + 1); |
| 128 | int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
124 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
| 129 | |
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| 130 | if (diff < 0) |
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| 131 | { |
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| 132 | LOG (llevError | logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max); |
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| 133 | return (min); /* avoids a float exception */ |
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| 134 | } |
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| 135 | |
125 | |
| 136 | /* |
126 | /* |
| 137 | * Make a call to get two 32 bit unsigned random numbers, and just to |
127 | * Make a call to get two 32 bit unsigned random numbers, and just to |
| 138 | * a little bitshifting. |
128 | * a little bitshifting. |
| 139 | */ |
129 | */ |
| 140 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
130 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
| 141 | |
131 | |
| 142 | if (op->type != PLAYER) |
132 | if (op->type != PLAYER) |
| 143 | return ((ran % diff) + min); |
133 | return ((ran % range) + r_min); |
| 144 | |
134 | |
| 145 | int luck = op->stats.luck; |
135 | int luck = op->stats.luck; |
| 146 | |
136 | |
| 147 | if (rndm (base) < MIN (10, abs (luck))) |
137 | if (rndm (base) < min (10, abs (luck))) |
| 148 | { |
138 | { |
| 149 | /* we have a winner */ |
139 | /* we have a winner */ |
| 150 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
140 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
| 151 | diff -= luck; |
141 | range -= luck; |
| 152 | if (diff < 1) |
142 | if (range < 1) |
| 153 | return (omin); /*check again */ |
143 | return (omin); /*check again */ |
| 154 | |
144 | |
| 155 | ((goodbad) ? (min += luck) : (diff)); |
145 | ((goodbad) ? (r_min += luck) : (range)); |
| 156 | |
146 | |
| 157 | return (MAX (omin, MIN (max, (ran % diff) + min))); |
147 | return (max (omin, min (r_max, (ran % range) + r_min))); |
| 158 | } |
148 | } |
| 159 | |
149 | |
| 160 | return ran % diff + min; |
150 | return ran % range + r_min; |
| 161 | } |
151 | } |
| 162 | |
152 | |
| 163 | /* |
153 | /* |
| 164 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
154 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
| 165 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
155 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
