games/sail/assorted.c

   1 /*-
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)assorted.c       8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/sail/assorted.c,v 1.5 1999/11/30 03:49:31 billf Exp $
  31  * $DragonFly: src/games/sail/assorted.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include "externs.h"
  35
  36 static void strike(struct ship *, struct ship *);
  37
  38 void
  39 table(int rig, int shot, int hittable,
  40       struct ship *on, struct ship *from, int roll)
  41 {
  42         int hhits = 0, chits = 0, ghits = 0, rhits = 0;
  43         int Ghit = 0, Hhit = 0, Rhit = 0, Chit = 0;
  44         int guns, car, pc, hull;
  45         int crew[3];
  46         int n;
  47         int rigg[4];
  48         const char *message = NULL;
  49         struct Tables *tp;
  50
  51         pc = on->file->pcrew;
  52         hull = on->specs->hull;
  53         crew[0] = on->specs->crew1;
  54         crew[1] = on->specs->crew2;
  55         crew[2] = on->specs->crew3;
  56         rigg[0] = on->specs->rig1;
  57         rigg[1] = on->specs->rig2;
  58         rigg[2] = on->specs->rig3;
  59         rigg[3] = on->specs->rig4;
  60         if (shot == L_GRAPE) {
  61                 Chit = chits = hittable;
  62         } else {
  63                 tp = &(rig ? RigTable : HullTable)[hittable][roll-1];
  64                 Chit = chits = tp->C;
  65                 Rhit = rhits = tp->R;
  66                 Hhit = hhits = tp->H;
  67                 Ghit = ghits = tp->G;
  68                 if (on->file->FS)
  69                         rhits *= 2;
  70                 if (shot == L_CHAIN) {
  71                         Ghit = ghits = 0;
  72                         Hhit = hhits = 0;
  73                 }
  74         }
  75         if (on->file->captured != 0) {
  76                 pc -= (chits + 1) / 2;
  77                 chits /= 2;
  78         }
  79         for (n = 0; n < 3; n++) {
  80                 if (chits > crew[n]) {
  81                         chits -= crew[n];
  82                         crew[n] = 0;
  83                 } else {
  84                         crew[n] -= chits;
  85                         chits = 0;
  86                 }
  87         }
  88         for (n = 0; n < 3; n++) {
  89                 if (rhits > rigg[n]) {
  90                         rhits -= rigg[n];
  91                         rigg[n] = 0;
  92                 } else {
  93                         rigg[n] -= rhits;
  94                         rhits = 0;
  95                 }
  96         }
  97         if (rigg[3] != -1 && rhits > rigg[3]) {
  98                 rhits -= rigg[3];
  99                 rigg[3] = 0;
 100         } else if (rigg[3] != -1) {
 101                 rigg[3] -= rhits;
 102         }
 103         if (rig && !rigg[2] && (!rigg[3] || rigg[3] == -1))
 104                 makesignal(on, "dismasted!", NULL);
 105         if (portside(from, on, 0)) {
 106                 guns = on->specs->gunR;
 107                 car = on->specs->carR;
 108         } else {
 109                 guns = on->specs->gunL;
 110                 car = on->specs->carL;
 111         }
 112         if (ghits > car) {
 113                 ghits -= car;
 114                 car = 0;
 115         } else {
 116                 car -= ghits;
 117                 ghits = 0;
 118         }
 119         if (ghits > guns) {
 120                 ghits -= guns;
 121                 guns = 0;
 122         } else {
 123                 guns -= ghits;
 124                 ghits = 0;
 125         }
 126         hull -= ghits;
 127         if (Ghit)
 128                 Write(portside(from, on, 0) ? W_GUNR : W_GUNL,
 129                         on, guns, car, 0, 0);
 130         hull -= hhits;
 131         hull = hull < 0 ? 0 : hull;
 132         if (on->file->captured != 0 && Chit)
 133                 Write(W_PCREW, on, pc, 0, 0, 0);
 134         if (Hhit)
 135                 Write(W_HULL, on, hull, 0, 0, 0);
 136         if (Chit)
 137                 Write(W_CREW, on, crew[0], crew[1], crew[2], 0);
 138         if (Rhit)
 139                 Write(W_RIGG, on, rigg[0], rigg[1], rigg[2], rigg[3]);
 140         switch (shot) {
 141         case L_ROUND:
 142                 message = "firing round shot on %s (%c%c)";
 143                 break;
 144         case L_GRAPE:
 145                 message = "firing grape shot on %s (%c%c)";
 146                 break;
 147         case L_CHAIN:
 148                 message = "firing chain shot on %s (%c%c)";
 149                 break;
 150         case L_DOUBLE:
 151                 message = "firing double shot on %s (%c%c)";
 152                 break;
 153         case L_EXPLODE:
 154                 message = "exploding shot on %s (%c%c)";
 155         }
 156         makesignal(from, message, on);
 157         if (roll == 6 && rig) {
 158                 switch(Rhit) {
 159                 case 0:
 160                         message = "fore topsail sheets parted";
 161                         break;
 162                 case 1:
 163                         message = "mizzen shrouds parted";
 164                         break;
 165                 case 2:
 166                         message = "main topsail yard shot away";
 167                         break;
 168                 case 4:
 169                         message = "fore topmast and foremast shrouds shot away";
 170                         break;
 171                 case 5:
 172                         message = "mizzen mast and yard shot through";
 173                         break;
 174                 case 6:
 175                         message = "foremast and spritsail yard shattered";
 176                         break;
 177                 case 7:
 178                         message = "main topmast and mizzen mast shattered";
 179                         break;
 180                 }
 181                 makesignal(on, message, NULL);
 182         } else if (roll == 6) {
 183                 switch (Hhit) {
 184                 case 0:
 185                         message = "anchor cables severed";
 186                         break;
 187                 case 1:
 188                         message = "two anchor stocks shot away";
 189                         break;
 190                 case 2:
 191                         message = "quarterdeck bulwarks damaged";
 192                         break;
 193                 case 3:
 194                         message = "three gun ports shot away";
 195                         break;
 196                 case 4:
 197                         message = "four guns dismounted";
 198                         break;
 199                 case 5:
 200                         message = "rudder cables shot through";
 201                         Write(W_TA, on, 0, 0, 0, 0);
 202                         break;
 203                 case 6:
 204                         message = "shot holes below the water line";
 205                         break;
 206                 }
 207                 makesignal(on, message, NULL);
 208         }
 209         if (!hull)
 210                 strike(on, from);
 211 }
 212
 213 void
 214 Cleansnag(struct ship *from, struct ship *to, char all, char flag)
 215 {
 216         if (flag & 1) {
 217                 Write(W_UNGRAP, from, to->file->index, all, 0, 0);
 218                 Write(W_UNGRAP, to, from->file->index, all, 0, 0);
 219         }
 220         if (flag & 2) {
 221                 Write(W_UNFOUL, from, to->file->index, all, 0, 0);
 222                 Write(W_UNFOUL, to, from->file->index, all, 0, 0);
 223         }
 224         if (!snagged2(from, to)) {
 225                 if (!snagged(from)) {
 226                         unboard(from, from, 1);         /* defense */
 227                         unboard(from, from, 0);         /* defense */
 228                 } else
 229                         unboard(from, to, 0);           /* offense */
 230                 if (!snagged(to)) {
 231                         unboard(to, to, 1);             /* defense */
 232                         unboard(to, to, 0);             /* defense */
 233                 } else
 234                         unboard(to, from, 0);           /* offense */
 235         }
 236 }
 237
 238 static void
 239 strike(struct ship *ship, struct ship *from)
 240 {
 241         int points;
 242
 243         if (ship->file->struck)
 244                 return;
 245         Write(W_STRUCK, ship, 1, 0, 0, 0);
 246         points = ship->specs->pts + from->file->points;
 247         Write(W_POINTS, from, points, 0, 0, 0);
 248         unboard(ship, ship, 0);         /* all offense */
 249         unboard(ship, ship, 1);         /* all defense */
 250         switch (die()) {
 251         case 3:
 252         case 4:         /* ship may sink */
 253                 Write(W_SINK, ship, 1, 0, 0, 0);
 254                 break;
 255         case 5:
 256         case 6:         /* ship may explode */
 257                 Write(W_EXPLODE, ship, 1, 0, 0, 0);
 258                 break;
 259         }
 260         Writestr(W_SIGNAL, ship, "striking her colours!");
 261 }