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| 74 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
74 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
| 75 | */ |
75 | */ |
| 76 | int |
76 | int |
| 77 | random_roll (int r_min, int r_max, const object *op, bool prefer_high) |
77 | random_roll (int r_min, int r_max, const object *op, bool prefer_high) |
| 78 | { |
78 | { |
| 79 | r_max = max (r_min, r_max); |
79 | if (r_min > r_max) |
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80 | swap (r_min, r_max); |
| 80 | |
81 | |
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82 | int range = r_max - r_min + 1; |
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83 | int num = rndm (r_min, r_max); |
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84 | |
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85 | if (op->stats.luck) |
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86 | { |
| 81 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
87 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
| 82 | |
88 | |
| 83 | if (op->type == PLAYER) |
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| 84 | { |
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| 85 | int luck = op->stats.luck; |
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| 86 | |
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| 87 | if (rndm (base) < min (10, abs (luck))) |
89 | if (rndm (base) < min (10, abs (op->stats.luck))) |
| 88 | { |
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| 89 | //TODO: take luck into account |
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| 90 | } |
90 | { |
| 91 | } |
91 | // we have a winner, increase/decrease number by one accordingly |
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92 | int adjust = sign (op->stats.luck); |
| 92 | |
93 | |
| 93 | return rndm (r_min, r_max); |
94 | if (!prefer_high) |
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95 | adjust = -adjust; |
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96 | |
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97 | num = clamp (num + adjust, r_min, r_max); |
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98 | } |
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99 | } |
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100 | |
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101 | return num; |
| 94 | } |
102 | } |
| 95 | |
103 | |
| 96 | /* |
104 | /* |
| 97 | * This is a 64 bit version of random_roll above. This is needed |
105 | * This is a 64 bit version of random_roll above. This is needed |
| 98 | * for exp loss calculations for players changing religions. |
106 | * for exp loss calculations for players changing religions. |
| 99 | */ |
107 | */ |
| 100 | sint64 |
108 | sint64 |
| 101 | random_roll64 (sint64 r_min, sint64 r_max, const object *op, bool prefer_high) |
109 | random_roll64 (sint64 r_min, sint64 r_max, const object *op, bool prefer_high) |
| 102 | { |
110 | { |
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111 | if (r_min > r_max) |
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112 | swap (r_min, r_max); |
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113 | |
| 103 | sint64 range = max (0, r_max - r_min + 1); |
114 | sint64 range = r_max - r_min + 1; |
| 104 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
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| 105 | |
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| 106 | /* |
115 | /* |
| 107 | * Make a call to get two 32 bit unsigned random numbers, and just do |
116 | * Make a call to get two 32 bit unsigned random numbers, and just do |
| 108 | * a little bitshifting. |
117 | * a little bitshifting. |
| 109 | */ |
118 | */ |
| 110 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
119 | sint64 num = rndm.next () ^ (sint64 (rndm.next ()) << 31); |
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120 | |
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121 | num = num % range + r_min; |
| 111 | |
122 | |
| 112 | if (op->stats.luck) |
123 | if (op->stats.luck) |
| 113 | { |
124 | { |
| 114 | int luck = op->stats.luck; |
125 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
| 115 | |
126 | |
| 116 | if (rndm (base) < min (10, abs (luck))) |
127 | if (rndm (base) < min (10, abs (op->stats.luck))) |
| 117 | { |
128 | { |
| 118 | /* we have a winner */ |
129 | // we have a winner, increase/decrease number by one accordingly |
| 119 | luck = luck > 0 ? 1 : -1; |
130 | int adjust = sign (op->stats.luck); |
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131 | |
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132 | if (!prefer_high) |
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133 | adjust = -adjust; |
| 120 | |
134 | |
| 121 | range -= luck; |
135 | num = clamp (num + adjust, r_min, r_max); |
| 122 | if (range < 1) |
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| 123 | return r_min; /*check again */ |
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| 124 | |
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| 125 | if (prefer_high) |
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| 126 | r_min += luck; |
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| 127 | |
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| 128 | return clamp (ran % range + r_min, r_min, r_max); |
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| 129 | } |
136 | } |
| 130 | } |
137 | } |
| 131 | |
138 | |
| 132 | return ran % range + r_min; |
139 | return num; |
| 133 | } |
140 | } |
| 134 | |
141 | |
| 135 | /* |
142 | /* |
| 136 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
143 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
| 137 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
144 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
