cvs.zerfleddert.de Git - micropolis/blob - src/sim/s_eval.c

   1 /* s_eval.c
   2  *
   3  * Micropolis, Unix Version.  This game was released for the Unix platform
   4  * in or about 1990 and has been modified for inclusion in the One Laptop
   5  * Per Child program.  Copyright (C) 1989 - 2007 Electronic Arts Inc.  If
   6  * you need assistance with this program, you may contact:
   7  *   http://wiki.laptop.org/go/Micropolis  or email  micropolis@laptop.org.
   8  *
   9  * This program is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation, either version 3 of the License, or (at
  12  * your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.  You should have received a
  18  * copy of the GNU General Public License along with this program.  If
  19  * not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *             ADDITIONAL TERMS per GNU GPL Section 7
  22  *
  23  * No trademark or publicity rights are granted.  This license does NOT
  24  * give you any right, title or interest in the trademark SimCity or any
  25  * other Electronic Arts trademark.  You may not distribute any
  26  * modification of this program using the trademark SimCity or claim any
  27  * affliation or association with Electronic Arts Inc. or its employees.
  28  *
  29  * Any propagation or conveyance of this program must include this
  30  * copyright notice and these terms.
  31  *
  32  * If you convey this program (or any modifications of it) and assume
  33  * contractual liability for the program to recipients of it, you agree
  34  * to indemnify Electronic Arts for any liability that those contractual
  35  * assumptions impose on Electronic Arts.
  36  *
  37  * You may not misrepresent the origins of this program; modified
  38  * versions of the program must be marked as such and not identified as
  39  * the original program.
  40  *
  41  * This disclaimer supplements the one included in the General Public
  42  * License.  TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, THIS
  43  * PROGRAM IS PROVIDED TO YOU "AS IS," WITH ALL FAULTS, WITHOUT WARRANTY
  44  * OF ANY KIND, AND YOUR USE IS AT YOUR SOLE RISK.  THE ENTIRE RISK OF
  45  * SATISFACTORY QUALITY AND PERFORMANCE RESIDES WITH YOU.  ELECTRONIC ARTS
  46  * DISCLAIMS ANY AND ALL EXPRESS, IMPLIED OR STATUTORY WARRANTIES,
  47  * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, SATISFACTORY QUALITY,
  48  * FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT OF THIRD PARTY
  49  * RIGHTS, AND WARRANTIES (IF ANY) ARISING FROM A COURSE OF DEALING,
  50  * USAGE, OR TRADE PRACTICE.  ELECTRONIC ARTS DOES NOT WARRANT AGAINST
  51  * INTERFERENCE WITH YOUR ENJOYMENT OF THE PROGRAM; THAT THE PROGRAM WILL
  52  * MEET YOUR REQUIREMENTS; THAT OPERATION OF THE PROGRAM WILL BE
  53  * UNINTERRUPTED OR ERROR-FREE, OR THAT THE PROGRAM WILL BE COMPATIBLE
  54  * WITH THIRD PARTY SOFTWARE OR THAT ANY ERRORS IN THE PROGRAM WILL BE
  55  * CORRECTED.  NO ORAL OR WRITTEN ADVICE PROVIDED BY ELECTRONIC ARTS OR
  56  * ANY AUTHORIZED REPRESENTATIVE SHALL CREATE A WARRANTY.  SOME
  57  * JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF OR LIMITATIONS ON IMPLIED
  58  * WARRANTIES OR THE LIMITATIONS ON THE APPLICABLE STATUTORY RIGHTS OF A
  59  * CONSUMER, SO SOME OR ALL OF THE ABOVE EXCLUSIONS AND LIMITATIONS MAY
  60  * NOT APPLY TO YOU.
  61  */
  62 #include "sim.h"
  63
  64
  65 /* City Evaluation */
  66
  67
  68 short EvalValid;
  69 short CityYes, CityNo;
  70 short ProblemTable[PROBNUM];
  71 short ProblemTaken[PROBNUM];
  72 short ProblemVotes[PROBNUM];            /* these are the votes for each  */
  73 short ProblemOrder[4];                  /* sorted index to above  */
  74 QUAD CityPop, deltaCityPop;
  75 QUAD CityAssValue;
  76 short CityClass;                        /*  0..5  */
  77 short CityScore, deltaCityScore, AverageCityScore;
  78 short TrafficAverage;
  79
  80
  81 /* comefrom: SpecialInit Simulate */
  82 CityEvaluation(void)
  83 {
  84   EvalValid = 0;
  85   if (TotalPop) {
  86     GetAssValue();
  87     DoPopNum();
  88     DoProblems();
  89     GetScore();
  90     DoVotes();
  91     ChangeEval();
  92   } else {
  93     EvalInit();
  94     ChangeEval();
  95   }
  96   EvalValid = 1;
  97 }
  98
  99
 100 /* comefrom: CityEvaluation SetCommonInits */
 101 EvalInit(void)
 102 {
 103   register short x, z;
 104
 105   z = 0;
 106   CityYes = z;
 107   CityNo = z;
 108   CityPop = z;
 109   deltaCityPop = z;
 110   CityAssValue = z;
 111   CityClass = z;
 112   CityScore = 500;
 113   deltaCityScore = z;
 114   EvalValid = 1;
 115   for (x = 0; x < PROBNUM; x++)
 116     ProblemVotes[x] = z;
 117   for (x = 0; x < 4; x++)
 118     ProblemOrder[x] = z;
 119 }
 120
 121
 122 /* comefrom: CityEvaluation */
 123 GetAssValue(void)
 124 {
 125   QUAD z;
 126
 127   z = RoadTotal * 5;
 128   z += RailTotal * 10;
 129   z += PolicePop * 1000;
 130   z += FireStPop * 1000;
 131   z += HospPop * 400;
 132   z += StadiumPop * 3000;
 133   z += PortPop * 5000;
 134   z += APortPop * 10000;
 135   z += CoalPop * 3000;
 136   z += NuclearPop * 6000;
 137   CityAssValue = z * 1000;
 138 }
 139
 140
 141 /* comefrom: CityEvaluation */
 142 DoPopNum(void)
 143 {
 144   QUAD OldCityPop;
 145
 146   OldCityPop = CityPop;
 147   CityPop = ((ResPop) + (ComPop * 8L) + (IndPop *8L)) * 20L;
 148   if (OldCityPop == -1) {
 149     OldCityPop = CityPop;
 150   }
 151   deltaCityPop = CityPop - OldCityPop;
 152
 153   CityClass = 0;                        /* village */
 154   if (CityPop > 2000)   CityClass++;    /* town */
 155   if (CityPop > 10000)  CityClass++;    /* city */
 156   if (CityPop > 50000)  CityClass++;    /* capital */
 157   if (CityPop > 100000) CityClass++;    /* metropolis */
 158   if (CityPop > 500000) CityClass++;    /* megalopolis */
 159 }
 160
 161
 162 /* comefrom: CityEvaluation */
 163 DoProblems(void)
 164 {
 165   register short x, z;
 166   short ThisProb, Max;
 167
 168   for (z = 0; z < PROBNUM; z++)
 169     ProblemTable[z] = 0;
 170   ProblemTable[0] = CrimeAverage;               /* Crime */
 171   ProblemTable[1] = PolluteAverage;             /* Pollution */
 172   ProblemTable[2] = LVAverage * .7;             /* Housing */
 173   ProblemTable[3] = CityTax * 10;               /* Taxes */
 174   ProblemTable[4] = AverageTrf();               /* Traffic */
 175   ProblemTable[5] = GetUnemployment();          /* Unemployment */
 176   ProblemTable[6] = GetFire();                  /* Fire */
 177   VoteProblems();
 178   for (z = 0; z < PROBNUM; z++)
 179     ProblemTaken[z] = 0;
 180   for (z = 0; z < 4; z++) {
 181     Max = 0;
 182     for (x = 0; x < 7; x++) {
 183       if ((ProblemVotes[x] > Max) && (!ProblemTaken[x])) {
 184         ThisProb = x;
 185         Max = ProblemVotes[x];
 186       }
 187     }
 188     if (Max) {
 189       ProblemTaken[ThisProb] = 1;
 190       ProblemOrder[z] = ThisProb;
 191     }
 192     else {
 193       ProblemOrder[z] = 7;
 194       ProblemTable[7] = 0;
 195     }
 196   }
 197 }
 198
 199
 200 /* comefrom: DoProblems */
 201 VoteProblems(void)
 202 {
 203   register x, z, count;
 204
 205   for (z = 0; z < PROBNUM; z++)
 206     ProblemVotes[z] = 0;
 207
 208   x = 0;
 209   z = 0;
 210   count = 0;
 211   while ((z < 100) && (count < 600)) {
 212     if (Rand(300) < ProblemTable[x]) {
 213       ProblemVotes[x]++;
 214       z++;
 215     }
 216     x++;
 217     if (x > PROBNUM) x = 0;
 218     count++;
 219   }
 220 }
 221
 222
 223 /* comefrom: DoProblems */
 224 AverageTrf(void)
 225 {
 226   QUAD TrfTotal;
 227   register short x, y, count;
 228
 229   TrfTotal = 0;
 230   count = 1;
 231   for (x=0; x < HWLDX; x++)
 232     for (y=0; y < HWLDY; y++)
 233       if (LandValueMem[x][y]) {
 234         TrfTotal += TrfDensity[x][y];
 235         count++;
 236       }
 237
 238   TrafficAverage = (TrfTotal / count) * 2.4;
 239   return(TrafficAverage);
 240 }
 241
 242
 243 /* comefrom: DoProblems */
 244 GetUnemployment(void)
 245 {
 246   float r;
 247   short b;
 248
 249   b = (ComPop + IndPop) << 3;
 250   if (b)
 251     r = ((float)ResPop) / b;
 252   else
 253     return(0);
 254
 255   b = (r - 1) * 255;
 256   if (b > 255)
 257     b = 255;
 258   return (b);
 259 }
 260
 261
 262 /* comefrom: DoProblems GetScore */
 263 GetFire(void)
 264 {
 265   short z;
 266
 267   z = FirePop * 5;
 268   if (z > 255)
 269     return(255);
 270   else
 271     return(z);
 272 }
 273
 274
 275 /* comefrom: CityEvaluation */
 276 GetScore(void)
 277 {
 278   register x, z;
 279   short OldCityScore;
 280   float SM, TM;
 281
 282   OldCityScore = CityScore;
 283   x = 0;
 284   for (z = 0; z < 7; z++)
 285     x += ProblemTable[z];       /* add 7 probs */
 286
 287   x = x / 3;                    /* 7 + 2 average */
 288   if (x > 256) x = 256;
 289
 290   z = (256 - x) * 4;
 291   if (z > 1000) z = 1000;
 292   if (z < 0 ) z = 0;
 293
 294   if (ResCap) z = z * .85;
 295   if (ComCap) z = z * .85;
 296   if (IndCap) z = z * .85;
 297   if (RoadEffect < 32)  z = z - (32 - RoadEffect);
 298   if (PoliceEffect < 1000) z = z * (.9 + (PoliceEffect / 10000.1));
 299   if (FireEffect < 1000) z = z * (.9 + (FireEffect / 10000.1));
 300   if (RValve < -1000) z = z * .85;
 301   if (CValve < -1000) z = z * .85;
 302   if (IValve < -1000) z = z * .85;
 303
 304   SM = 1.0;
 305   if ((CityPop == 0) || (deltaCityPop == 0))
 306     SM = 1.0;
 307   else if (deltaCityPop == CityPop)
 308     SM = 1.0;
 309   else if (deltaCityPop > 0)
 310     SM = ((float)deltaCityPop/CityPop) + 1.0;
 311   else if (deltaCityPop < 0)
 312     SM = .95 + ((float) deltaCityPop/(CityPop - deltaCityPop));
 313   z = z * SM;
 314   z = z - GetFire();            /* dec score for fires */
 315   z = z - (CityTax);
 316
 317   TM = unPwrdZCnt + PwrdZCnt;   /* dec score for unpowered zones */
 318   if (TM) SM = PwrdZCnt / TM;
 319   else SM = 1.0;
 320   z = z * SM;
 321
 322   if (z > 1000) z = 1000;
 323   if (z < 0 ) z = 0;
 324
 325   CityScore = (CityScore + z) / 2;
 326
 327   deltaCityScore = CityScore - OldCityScore;
 328 }
 329
 330
 331 /* comefrom: CityEvaluation */
 332 DoVotes(void)
 333 {
 334   register z;
 335
 336   CityYes = 0;
 337   CityNo = 0;
 338   for (z = 0; z < 100; z++) {
 339     if (Rand(1000) < CityScore)
 340       CityYes++;
 341     else
 342       CityNo++;
 343   }
 344 }