Mercurial > mm7
annotate Random.cpp @ 2052:71a814f4482a
Moved implementation to cpp
| author | Nomad |
|---|---|
| date | Fri, 29 Nov 2013 12:20:07 +0200 |
| parents | 7a9477135943 |
| children | 628a0ad87136 |
| rev | line source |
|---|---|
| 0 | 1 #include <math.h> |
| 2 | |
| 3 #include "Random.h" | |
|
2037
7a9477135943
Renamed Math.h -> OurMath.h (file resolution was sometimes ambiguous)
Nomad
parents:
1262
diff
changeset
|
4 #include "OurMath.h" |
| 0 | 5 |
| 6 | |
| 7 | |
| 8 | |
| 780 | 9 struct Random *pRnd=new Random(); // idb |
| 0 | 10 |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 //----- (004BE59E) -------------------------------------------------------- | |
| 16 void Random::SetRange(int min, int max) | |
| 17 { | |
| 18 this->min = min; | |
| 19 this->range = max - min; | |
| 20 } | |
| 21 | |
| 22 //----- (004BE5B1) -------------------------------------------------------- | |
| 23 double Random::GetRandom() | |
| 24 { | |
| 25 Random *v1; // esi@1 | |
| 26 double v2; // st7@1 | |
| 27 double v3; // st7@1 | |
| 28 | |
| 29 v1 = this; | |
| 30 this->field_0[3] = this->field_0[2]; | |
| 31 this->field_0[2] = this->field_0[1]; | |
| 32 v2 = this->field_0[0]; | |
| 33 this->field_0[1] = v2; | |
| 34 v3 = this->field_0[3] * 1492.0 | |
| 35 + this->field_0[2] * 1776.0 | |
| 36 + this->field_0[3] * 2111111111.0 | |
| 37 + v2 * 5115.0 | |
| 38 + this->field_0[4]; | |
| 39 v1->field_0[0] = v3 - floor(v3); | |
| 40 v1->field_0[4] = v3 * 2.328306436538696e-10; | |
| 41 return v3 - v3; | |
| 42 } | |
| 43 | |
| 44 //----- (004BE623) -------------------------------------------------------- | |
| 45 int Random::GetInRange() | |
| 46 { | |
| 47 Random *v1; // esi@1 | |
| 48 float v2; // ST10_4@1 | |
| 49 double v3; // ST04_8@1 | |
| 50 int floored_random; // ecx@1 | |
| 51 | |
| 52 v2 = GetRandom() * (double)this->range; | |
| 1262 | 53 floored_random = bankersRounding(v2); |
| 54 if ( floored_random >= this->range ) | |
| 55 floored_random = this->range; | |
| 56 return floored_random + this->min; | |
| 0 | 57 } |
| 58 | |
| 59 //----- (004BE65D) -------------------------------------------------------- | |
| 60 void Random::Initialize(int seed) | |
| 61 { | |
| 62 int v2; // eax@1 | |
| 63 Random *this_; // esi@1 | |
| 64 signed int v4; // ecx@3 | |
| 65 unsigned int v5; // eax@4 | |
| 66 signed int v6; // edi@5 | |
| 67 | |
| 68 v2 = seed; | |
| 69 this_ = this; | |
| 70 if ( !seed ) | |
| 71 v2 = -1; | |
| 72 v4 = 0; | |
| 73 do | |
| 74 { | |
| 75 v5 = (((v2 << 13) ^ (unsigned int)v2) >> 17) ^ (v2 << 13) ^ v2; | |
| 76 v2 = 32 * v5 ^ v5; | |
| 77 this_->field_0[v4++] = (double)(unsigned int)v2 * 2.328306436538696e-10; | |
| 78 } | |
| 79 while ( v4 < 5 ); | |
| 80 v6 = 19; | |
| 81 do | |
| 82 { | |
| 83 GetRandom(); | |
| 84 --v6; | |
| 85 } | |
| 86 while ( v6 ); | |
| 87 } | |
| 88 |