Mercurial > mm7
annotate Random.cpp @ 2331:9551756f46c4
Moving functions out of mm7_6.cpp into appropriate classes as static methods or free functions
| author | Grumpy7 |
|---|---|
| date | Wed, 02 Apr 2014 01:21:05 +0200 |
| parents | aff7a7b072b7 |
| children | ddb803517a48 |
| rev | line source |
|---|---|
|
2253
aff7a7b072b7
adding _CRT_SECURE_NO_WARNINGS to get rid of a few hundrer annoying warnings + adding count parameter to swprintf
Grumpy7
parents:
2196
diff
changeset
|
1 #define _CRT_SECURE_NO_WARNINGS |
| 0 | 2 #include <math.h> |
| 3 | |
| 4 #include "Random.h" | |
|
2037
7a9477135943
Renamed Math.h -> OurMath.h (file resolution was sometimes ambiguous)
Nomad
parents:
1262
diff
changeset
|
5 #include "OurMath.h" |
| 0 | 6 |
| 7 | |
| 8 | |
| 9 | |
| 780 | 10 struct Random *pRnd=new Random(); // idb |
| 0 | 11 |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 16 //----- (004BE59E) -------------------------------------------------------- | |
| 17 void Random::SetRange(int min, int max) | |
| 18 { | |
| 19 this->min = min; | |
| 20 this->range = max - min; | |
| 21 } | |
| 22 | |
| 23 //----- (004BE5B1) -------------------------------------------------------- | |
| 24 double Random::GetRandom() | |
| 25 { | |
| 26 Random *v1; // esi@1 | |
| 27 double v2; // st7@1 | |
| 28 double v3; // st7@1 | |
| 29 | |
| 30 v1 = this; | |
| 31 this->field_0[3] = this->field_0[2]; | |
| 32 this->field_0[2] = this->field_0[1]; | |
| 33 v2 = this->field_0[0]; | |
| 34 this->field_0[1] = v2; | |
| 35 v3 = this->field_0[3] * 1492.0 | |
| 36 + this->field_0[2] * 1776.0 | |
| 37 + this->field_0[3] * 2111111111.0 | |
| 38 + v2 * 5115.0 | |
| 39 + this->field_0[4]; | |
| 40 v1->field_0[0] = v3 - floor(v3); | |
| 2196 | 41 v1->field_0[4] = floor(v3) * 2.328306436538696e-10; |
| 42 return v1->field_0[0]; | |
| 0 | 43 } |
| 44 | |
| 45 //----- (004BE623) -------------------------------------------------------- | |
| 46 int Random::GetInRange() | |
| 47 { | |
| 48 Random *v1; // esi@1 | |
| 49 float v2; // ST10_4@1 | |
| 50 double v3; // ST04_8@1 | |
| 51 int floored_random; // ecx@1 | |
| 52 | |
| 53 v2 = GetRandom() * (double)this->range; | |
| 1262 | 54 floored_random = bankersRounding(v2); |
| 55 if ( floored_random >= this->range ) | |
| 56 floored_random = this->range; | |
| 57 return floored_random + this->min; | |
| 0 | 58 } |
| 59 | |
| 60 //----- (004BE65D) -------------------------------------------------------- | |
| 61 void Random::Initialize(int seed) | |
| 62 { | |
| 63 int v2; // eax@1 | |
| 64 Random *this_; // esi@1 | |
| 65 signed int v4; // ecx@3 | |
| 66 unsigned int v5; // eax@4 | |
| 67 signed int v6; // edi@5 | |
| 68 | |
| 69 v2 = seed; | |
| 70 this_ = this; | |
| 71 if ( !seed ) | |
| 72 v2 = -1; | |
| 73 v4 = 0; | |
| 74 do | |
| 75 { | |
| 76 v5 = (((v2 << 13) ^ (unsigned int)v2) >> 17) ^ (v2 << 13) ^ v2; | |
| 77 v2 = 32 * v5 ^ v5; | |
| 78 this_->field_0[v4++] = (double)(unsigned int)v2 * 2.328306436538696e-10; | |
| 79 } | |
| 80 while ( v4 < 5 ); | |
| 81 v6 = 19; | |
| 82 do | |
| 83 { | |
| 84 GetRandom(); | |
| 85 --v6; | |
| 86 } | |
| 87 while ( v6 ); | |
| 88 } | |
| 89 |