RAND.CPP (7715B)
1 // 2 // Copyright 2020 Electronic Arts Inc. 3 // 4 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is free 5 // software: you can redistribute it and/or modify it under the terms of 6 // the GNU General Public License as published by the Free Software Foundation, 7 // either version 3 of the License, or (at your option) any later version. 8 9 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 10 // in the hope that it will be useful, but with permitted additional restrictions 11 // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 12 // distributed with this program. You should have received a copy of the 13 // GNU General Public License along with permitted additional restrictions 14 // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection 15 16 /* $Header: F:\projects\c&c0\vcs\code\rand.cpv 4.35 04 Jul 1996 16:14:56 JOE_BOSTIC $ */ 17 /*************************************************************************** 18 * * 19 * Project Name : Command & Conquer * 20 * * 21 * File Name : RAND.CPP * 22 * * 23 * Programmer : Bill R. Randolph * 24 * * 25 * Start Date : 04/25/95 * 26 * * 27 * Last Update : June 17, 1995 [JLB] * 28 * * 29 *-------------------------------------------------------------------------* 30 * Functions: * 31 * Sim_IRandom -- Returns minval to maxval, inclusive * 32 * Sim_Random -- Returns 0 - 255 * 33 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ 34 35 #include "function.h" 36 #include "COORDA.h" 37 int SimRandIndex = 0; 38 39 /*************************************************************************** 40 * Sim_Random -- Returns 0 - 255 * 41 * * 42 * INPUT: * 43 * none. * 44 * * 45 * OUTPUT: * 46 * 0 - 255, at random * 47 * * 48 * WARNINGS: * 49 * none. * 50 * * 51 * HISTORY: * 52 * 04/25/1995 BRR : Created. * 53 * 06/17/1995 JLB : Takes advantage of character math wrap. * 54 *=========================================================================*/ 55 int Sim_Random(void) 56 { 57 static unsigned char _randvals[] = { 58 0x47, 0xce, 0xc6, 0x6e, 0xd7, 0x9f, 0x98, 0x29, 0x92, 0x0c, 0x74, 0xa2, 59 0x65, 0x20, 0x4b, 0x4f, 0x1e, 0xed, 0x3a, 0xdf, 0xa5, 0x7d, 0xb5, 0xc8, 60 0x86, 0x01, 0x81, 0xca, 0xf1, 0x17, 0xd6, 0x23, 0xe1, 0xbd, 0x0e, 0xe4, 61 0x62, 0xfa, 0xd9, 0x5c, 0x68, 0xf5, 0x7f, 0xdc, 0xe7, 0xb9, 0xc4, 0xb3, 62 0x7a, 0xd8, 0x06, 0x3e, 0xeb, 0x09, 0x1a, 0x31, 0x3f, 0x46, 0x28, 0x12, 63 0xf0, 0x10, 0x84, 0x76, 0x3b, 0xc5, 0x53, 0x18, 0x14, 0x73, 0x7e, 0x59, 64 0x48, 0x93, 0xaa, 0x1d, 0x5d, 0x79, 0x24, 0x61, 0x1b, 0xfd, 0x2b, 0xa8, 65 0xc2, 0xdb, 0xe8, 0x2a, 0xb0, 0x25, 0x95, 0xab, 0x96, 0x83, 0xfc, 0x5f, 66 0x9c, 0x32, 0x78, 0x9a, 0x9e, 0xe2, 0x8e, 0x35, 0x4c, 0x41, 0xa1, 0x69, 67 0x5a, 0xfe, 0xa7, 0xa4, 0xf6, 0x6d, 0xc1, 0x58, 0x0a, 0xcf, 0xea, 0xc3, 68 0xba, 0x85, 0x99, 0x8d, 0x36, 0xb6, 0xdd, 0xd3, 0x04, 0xe6, 0x45, 0x0d, 69 0x60, 0xae, 0xa3, 0x22, 0x4d, 0xe9, 0xc9, 0x9b, 0xb7, 0x0f, 0x02, 0x42, 70 0xf9, 0x0b, 0x8f, 0x43, 0x44, 0x87, 0x70, 0xbe, 0xe3, 0xf8, 0xee, 0xa9, 71 0xbc, 0xc0, 0x67, 0x33, 0x16, 0x37, 0x57, 0xad, 0x5e, 0x9d, 0x64, 0x40, 72 0x54, 0x05, 0x2c, 0xe0, 0xb2, 0x97, 0x08, 0xaf, 0x75, 0x8a, 0x5b, 0xfb, 73 0x4e, 0xbf, 0x91, 0xf3, 0xcb, 0x7c, 0x63, 0xef, 0x89, 0x52, 0x6c, 0x2f, 74 0x21, 0x4a, 0xf7, 0xcd, 0x2e, 0xf4, 0xc7, 0x6f, 0x19, 0xb1, 0x66, 0xcc, 75 0x90, 0x8c, 0x50, 0x51, 0x26, 0x7b, 0xda, 0x49, 0x80, 0x30, 0x55, 0x1f, 76 0xd2, 0xb4, 0xd1, 0xd5, 0x6b, 0xf2, 0x72, 0xbb, 0x13, 0x3d, 0xff, 0x15, 77 0x38, 0xe5, 0xd4, 0xde, 0x2d, 0x27, 0x94, 0xa0, 0xd0, 0x39, 0x82, 0x8b, 78 0x03, 0xac, 0x3c, 0x34, 0x77, 0xb8, 0xec, 0x00, 0x07, 0x1c, 0x88, 0xa6, 79 0x56, 0x11, 0x71, 0x6a, 80 }; 81 82 ((unsigned char&)SimRandIndex)++; 83 // SimRandIndex &= 0xff; 84 return(_randvals[SimRandIndex]); 85 } 86 87 88 /*************************************************************************** 89 * Sim_IRandom -- returns minval to maxval, inclusive * 90 * * 91 * INPUT: * 92 * minval,maxval range limits * 93 * * 94 * OUTPUT: * 95 * random value * 96 * * 97 * WARNINGS: * 98 * none. * 99 * * 100 * HISTORY: * 101 * 04/25/1995 BRR : Created. * 102 * 06/17/1995 JLB : Uses fixed point math helper routine. * 103 *=========================================================================*/ 104 int Sim_IRandom(int minval, int maxval) 105 { 106 return(Fixed_To_Cardinal((maxval-minval), Sim_Random()) + minval); 107 } 108 109 110 /* 111 ** This routine can be used to create the _RandVals[] table. It will be 112 ** different every time it's run. 113 */ 114 #if 0 115 #include <stdio.h> 116 #include <stdlib.h> 117 #include <time.h> 118 #include <conio.h> 119 120 void main(void); 121 122 void main(void) 123 { 124 int i; 125 FILE *fp; 126 int r; 127 char is_used[256]; 128 char rand_val[256]; 129 130 srand ( time ( NULL ) ) ; 131 132 for (i = 0; i < 256; i++) { 133 is_used[i] = 0; 134 } 135 136 /* 137 ** Store the digits 0 to 255 in a random order within the 'rand_val' array 138 ** This ensures our random number sequence represents every value. 139 */ 140 for (i = 0; i < 256; i++) { 141 if (kbhit()!=0) { 142 printf("ABORTED!\n"); 143 break; 144 } 145 r = (rand() * 256) / RAND_MAX; // r is the index into array 146 if (is_used[r]==0) { 147 is_used[r] = 1; 148 rand_val[r] = i; 149 } else { 150 i--; 151 } 152 } 153 154 fp = fopen("rand.cpp","wt"); 155 if (fp==NULL) { 156 printf("File error\n"); 157 exit(0); 158 } 159 160 fprintf(fp, "unsigned char _RandVals[] = {\n"); 161 for (i = 0; i < 256; i++) { 162 fprintf(fp,"0x%02x,\n",rand_val[i]); 163 } 164 fprintf(fp,"};\n"); 165 fclose(fp); 166 167 } 168 169 #endif 170