| 1 | /* s_power.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 | /* Power Scan */ |
| 66 | |
| 67 | |
| 68 | int PowerStackNum; |
| 69 | char PowerStackX[PWRSTKSIZE], PowerStackY[PWRSTKSIZE]; |
| 70 | QUAD MaxPower, NumPower; |
| 71 | |
| 72 | void PullPowerStack(void); |
| 73 | |
| 74 | |
| 75 | /* comefrom: TestForCond DoPowerScan TryGo */ |
| 76 | int |
| 77 | MoveMapSim (short MDir) |
| 78 | { |
| 79 | switch (MDir) { |
| 80 | case 0: |
| 81 | if (SMapY > 0) { |
| 82 | SMapY--; |
| 83 | return (TRUE); |
| 84 | } |
| 85 | if (SMapY < 0) |
| 86 | SMapY = 0; |
| 87 | return (FALSE); |
| 88 | case 1: |
| 89 | if (SMapX < (WORLD_X - 1)) { |
| 90 | SMapX++; |
| 91 | return (TRUE); |
| 92 | } |
| 93 | if (SMapX > (WORLD_X - 1)) |
| 94 | SMapX = WORLD_X - 1; |
| 95 | return (FALSE); |
| 96 | case 2: |
| 97 | if (SMapY < (WORLD_Y - 1)) { |
| 98 | SMapY++; |
| 99 | return (TRUE); |
| 100 | } |
| 101 | if (SMapY > (WORLD_Y - 1)) |
| 102 | SMapY = WORLD_Y - 1; |
| 103 | return (FALSE); |
| 104 | case 3: |
| 105 | if (SMapX > 0) { |
| 106 | SMapX--; |
| 107 | return (TRUE); |
| 108 | } |
| 109 | if (SMapX < 0) |
| 110 | SMapX = 0; |
| 111 | return (FALSE); |
| 112 | case 4: |
| 113 | return (TRUE); |
| 114 | } |
| 115 | return (FALSE); |
| 116 | } |
| 117 | |
| 118 | |
| 119 | /* inlined -Don */ |
| 120 | #if 0 |
| 121 | /* comefrom: DoPowerScan */ |
| 122 | SetPowerBit(void) |
| 123 | { |
| 124 | register int PowerWrd; |
| 125 | |
| 126 | /* XXX: assumes 120x100 */ |
| 127 | PowerWrd = (SMapX >>4) + (SMapY <<3); |
| 128 | PowerMap[PowerWrd] |= 1 << (SMapX & 15); |
| 129 | } |
| 130 | #endif |
| 131 | |
| 132 | |
| 133 | /* inlined */ |
| 134 | #if 0 |
| 135 | /* comefrom: TestForCond */ |
| 136 | int TestPowerBit(void) |
| 137 | { |
| 138 | register int PowerWrd; |
| 139 | |
| 140 | if ((CChr9 == NUCLEAR) || (CChr9 == POWERPLANT)) |
| 141 | return(1); |
| 142 | /* XXX: assumes 120x100 */ |
| 143 | PowerWrd = (SMapX >>4) + (SMapY <<3); |
| 144 | if (PowerWrd >= PWRMAPSIZE) |
| 145 | return(0); |
| 146 | return ((PowerMap[PowerWrd] & (1 << (SMapX & 15))) ? 1 : 0); |
| 147 | } |
| 148 | #endif |
| 149 | |
| 150 | |
| 151 | /* comefrom: DoPowerScan */ |
| 152 | short TestForCond(short TFDir) |
| 153 | { |
| 154 | register int xsave, ysave, PowerWrd; |
| 155 | |
| 156 | xsave = SMapX; |
| 157 | ysave = SMapY; |
| 158 | if (MoveMapSim(TFDir)) { |
| 159 | /* TestPowerBit was taking a lot of time so I swapped the & order -Don */ |
| 160 | #if 0 |
| 161 | if ((Map[SMapX][SMapY] & CONDBIT) && |
| 162 | (!TestPowerBit())) |
| 163 | #else |
| 164 | if ((Map[SMapX][SMapY] & CONDBIT) && |
| 165 | (CChr9 != NUCLEAR) && |
| 166 | (CChr9 != POWERPLANT) && |
| 167 | ( |
| 168 | #if 0 |
| 169 | (PowerWrd = (SMapX >>4) + (SMapY <<3)), |
| 170 | #else |
| 171 | (PowerWrd = POWERWORD(SMapX, SMapY)), |
| 172 | #endif |
| 173 | ((PowerWrd > PWRMAPSIZE) || |
| 174 | ((PowerMap[PowerWrd] & (1 << (SMapX & 15))) == 0)))) |
| 175 | #endif |
| 176 | { |
| 177 | SMapX = xsave; |
| 178 | SMapY = ysave; |
| 179 | return (TRUE); |
| 180 | } |
| 181 | } |
| 182 | SMapX = xsave; |
| 183 | SMapY = ysave; |
| 184 | return (FALSE); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /* comefrom: Simulate SpecialInit InitSimMemory */ |
| 189 | void |
| 190 | DoPowerScan(void) |
| 191 | { |
| 192 | short ADir; |
| 193 | register int ConNum, Dir, x; |
| 194 | |
| 195 | for (x = 0; x < PWRMAPSIZE; x++) |
| 196 | PowerMap[x] = 0; /* ClearPowerMem */ |
| 197 | |
| 198 | MaxPower = (CoalPop * 700L) + (NuclearPop * 2000L); /* post release */ |
| 199 | NumPower = 0; |
| 200 | |
| 201 | while (PowerStackNum) { |
| 202 | PullPowerStack(); |
| 203 | ADir = 4; |
| 204 | do { |
| 205 | if (++NumPower > MaxPower) { |
| 206 | SendMes(40); |
| 207 | return; |
| 208 | } |
| 209 | MoveMapSim(ADir); |
| 210 | /* inlined -Don */ |
| 211 | #if 0 |
| 212 | SetPowerBit(); |
| 213 | #else |
| 214 | #if 1 |
| 215 | SETPOWERBIT(SMapX, SMapY); |
| 216 | #else |
| 217 | PowerMap[(SMapX >>4) + (SMapY <<3)] |= 1 << (SMapX & 15); |
| 218 | #endif |
| 219 | #endif |
| 220 | ConNum = 0; |
| 221 | Dir = 0; |
| 222 | while ((Dir < 4) && (ConNum < 2)) { |
| 223 | if (TestForCond(Dir)) { |
| 224 | ConNum++; |
| 225 | ADir = Dir; |
| 226 | } |
| 227 | Dir++; |
| 228 | } |
| 229 | if (ConNum > 1) |
| 230 | PushPowerStack(); |
| 231 | } while (ConNum); |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | |
| 236 | /* comefrom: DoPowerScan DoSPZone */ |
| 237 | void |
| 238 | PushPowerStack(void) |
| 239 | { |
| 240 | if (PowerStackNum < (PWRSTKSIZE - 2)) { |
| 241 | PowerStackNum++; |
| 242 | PowerStackX[PowerStackNum] = SMapX; |
| 243 | PowerStackY[PowerStackNum] = SMapY; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | |
| 248 | /* comefrom: DoPowerScan */ |
| 249 | void |
| 250 | PullPowerStack(void) |
| 251 | { |
| 252 | if (PowerStackNum > 0) { |
| 253 | SMapX = PowerStackX[PowerStackNum]; |
| 254 | SMapY = PowerStackY[PowerStackNum]; |
| 255 | PowerStackNum--; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | |