Mercurial > mm7
annotate Engine/Random.cpp @ 2567:d569340b05ff
Few constants changed into enum values
| author | a.parshin |
|---|---|
| date | Thu, 21 May 2015 01:50:59 +0200 |
| parents | c674d547cc7c |
| children |
| rev | line source |
|---|---|
| 2499 | 1 #define _CRTDBG_MAP_ALLOC |
| 2 #include <stdlib.h> | |
| 3 #include <crtdbg.h> | |
| 4 | |
| 5 #define _CRT_SECURE_NO_WARNINGS | |
| 6 #include <math.h> | |
| 7 | |
| 8 #include "Random.h" | |
| 9 #include "OurMath.h" | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
|
2544
c674d547cc7c
GUIWindow switch logic refactored into behaviour classes
a.parshin
parents:
2499
diff
changeset
|
14 struct Random *pRnd = new Random(); |
| 2499 | 15 |
| 16 | |
| 17 | |
| 18 | |
| 19 | |
| 20 //----- (004BE59E) -------------------------------------------------------- | |
| 21 void Random::SetRange(int min, int max) | |
| 22 { | |
| 23 this->min = min; | |
| 24 this->range = max - min; | |
| 25 } | |
| 26 | |
| 27 //----- (004BE5B1) -------------------------------------------------------- | |
| 28 double Random::GetRandom() | |
| 29 { | |
| 30 Random *v1; // esi@1 | |
| 31 double v2; // st7@1 | |
| 32 double v3; // st7@1 | |
| 33 | |
| 34 v1 = this; | |
| 35 this->field_0[3] = this->field_0[2]; | |
| 36 this->field_0[2] = this->field_0[1]; | |
| 37 v2 = this->field_0[0]; | |
| 38 this->field_0[1] = v2; | |
| 39 v3 = this->field_0[3] * 1492.0 | |
| 40 + this->field_0[2] * 1776.0 | |
| 41 + this->field_0[3] * 2111111111.0 | |
| 42 + v2 * 5115.0 | |
| 43 + this->field_0[4]; | |
| 44 v1->field_0[0] = v3 - floor(v3); | |
| 45 v1->field_0[4] = floor(v3) * 2.328306436538696e-10; | |
| 46 return v1->field_0[0]; | |
| 47 } | |
| 48 | |
| 49 //----- (004BE623) -------------------------------------------------------- | |
| 50 int Random::GetInRange() | |
| 51 { | |
| 52 // Random *v1; // esi@1 | |
| 53 float v2; // ST10_4@1 | |
| 54 // double v3; // ST04_8@1 | |
| 55 int floored_random; // ecx@1 | |
| 56 | |
| 57 v2 = GetRandom() * (double)this->range; | |
| 58 floored_random = bankersRounding(v2); | |
| 59 if ( floored_random >= this->range ) | |
| 60 floored_random = this->range; | |
| 61 return floored_random + this->min; | |
| 62 } | |
| 63 | |
| 64 //----- (004BE65D) -------------------------------------------------------- | |
| 65 void Random::Initialize(int seed) | |
| 66 { | |
| 67 int v2; // eax@1 | |
| 68 Random *this_; // esi@1 | |
| 69 signed int v4; // ecx@3 | |
| 70 unsigned int v5; // eax@4 | |
| 71 signed int v6; // edi@5 | |
| 72 | |
| 73 v2 = seed; | |
| 74 this_ = this; | |
| 75 if ( !seed ) | |
| 76 v2 = -1; | |
| 77 v4 = 0; | |
| 78 do | |
| 79 { | |
| 80 v5 = (((v2 << 13) ^ (unsigned int)v2) >> 17) ^ (v2 << 13) ^ v2; | |
| 81 v2 = 32 * v5 ^ v5; | |
| 82 this_->field_0[v4++] = (double)(unsigned int)v2 * 2.328306436538696e-10; | |
| 83 } | |
| 84 while ( v4 < 5 ); | |
| 85 v6 = 19; | |
| 86 do | |
| 87 { | |
| 88 GetRandom(); | |
| 89 --v6; | |
| 90 } | |
| 91 while ( v6 ); | |
| 92 } | |
| 93 |