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Replace getvec() by direct, read-only item access in some cases where
[empserver] / src / lib / commands / scra.c
1 /*
2  *  Empire - A multi-player, client/server Internet based war game.
3  *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
4  *                           Ken Stevens, Steve McClure
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  *
20  *  ---
21  *
22  *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23  *  related information and legal notices. It is expected that any future
24  *  projects/authors will amend these files as needed.
25  *
26  *  ---
27  *
28  *  scra.c: Scrap ships, planes or land units
29  * 
30  *  Known contributors to this file:
31  *     Steve McClure, 2000
32  *     
33  */
34
35 #include "misc.h"
36 #include "player.h"
37 #include "var.h"
38 #include "xy.h"
39 #include "sect.h"
40 #include "ship.h"
41 #include "plane.h"
42 #include "land.h"
43 #include "nat.h"
44 #include "nsc.h"
45 #include "file.h"
46 #include "commands.h"
47 #include "optlist.h"
48
49 union item_u {
50     struct shpstr ship;
51     struct plnstr plane;
52     struct lndstr land;
53 };
54
55 int
56 scra(void)
57 {
58     struct nstr_item ni;
59     union item_u item;
60     int vec[I_MAX + 1];
61     int type;
62     struct sctstr sect;
63     struct mchrstr *mp;
64     struct plchrstr *pp;
65     struct lchrstr *lp;
66     s_char *p;
67     int i;
68     struct nstr_item ni2;
69     struct plnstr plane;
70     struct lndstr land;
71     struct sctstr sect2;
72     s_char prompt[128];
73     s_char buf[1024];
74     float eff;
75
76     if (!(p = getstarg(player->argp[1], "Ship, land, or plane? ", buf)))
77         return RET_SYN;
78     switch (*p) {
79     case 's':
80         type = EF_SHIP;
81         break;
82     case 'p':
83         type = EF_PLANE;
84         break;
85     case 'l':
86         type = EF_LAND;
87         break;
88     default:
89         pr("Ships, land units, or planes only! (s, l, p)\n");
90         return RET_SYN;
91     }
92     sprintf(prompt, "%s(s)? ", ef_nameof(type));
93     if ((p = getstarg(player->argp[2], prompt, buf)) == 0)
94         return RET_SYN;
95     if (!snxtitem(&ni, type, p))
96         return RET_SYN;
97     if (p && (isalpha(*p) || (*p == '*') || (*p == '~') || issector(p)
98               || islist(p))) {
99         s_char y_or_n[80], bbuf[80];
100
101         memset(y_or_n, 0, sizeof(y_or_n));
102         if (type == EF_SHIP) {
103             if (*p == '*')
104                 sprintf(bbuf, "all ships");
105             else if (*p == '~')
106                 sprintf(bbuf, "all unassigned ships");
107             else if (issector(p))
108                 sprintf(bbuf, "all ships in %s", p);
109             else if (isalpha(*p))
110                 sprintf(bbuf, "fleet %c", *p);
111             else
112                 sprintf(bbuf, "ships %s", p);
113         } else if (type == EF_LAND) {
114             if (*p == '*')
115                 sprintf(bbuf, "all land units");
116             else if (*p == '~')
117                 sprintf(bbuf, "all unassigned land units");
118             else if (issector(p))
119                 sprintf(bbuf, "all units in %s", p);
120             else if (isalpha(*p))
121                 sprintf(bbuf, "army %c", *p);
122             else
123                 sprintf(bbuf, "units %s", p);
124         } else {
125             if (*p == '*')
126                 sprintf(bbuf, "all planes");
127             else if (*p == '~')
128                 sprintf(bbuf, "all unassigned planes");
129             else if (issector(p))
130                 sprintf(bbuf, "all planes in %s", p);
131             else if (isalpha(*p))
132                 sprintf(bbuf, "wing %c", *p);
133             else
134                 sprintf(bbuf, "planes %s", p);
135         }
136
137         sprintf(y_or_n, "Really scrap %s [n]? ", bbuf);
138         if (!confirm(y_or_n))
139             return RET_FAIL;
140     }
141     while (nxtitem(&ni, (s_char *)&item)) {
142         if (!player->owner)
143             continue;
144
145         if (opt_MARKET) {
146             if (ontradingblock(type, (int *)&item.ship)) {
147                 pr("You cannot scrap an item on the trading block!\n");
148                 continue;
149             }
150         }
151
152         if (type == EF_SHIP) {
153             getsect(item.ship.shp_x, item.ship.shp_y, &sect);
154             if (sect.sct_type != SCT_HARBR)
155                 continue;
156             if (sect.sct_effic < 60 || sect.sct_own != player->cnum)
157                 continue;
158         } else if (type == EF_LAND) {
159             if (item.land.lnd_ship >= 0) {
160                 pr("%s is on a ship, and cannot be scrapped!\n",
161                    prland(&item.land));
162                 continue;
163             }
164             getsect(item.land.lnd_x, item.land.lnd_y, &sect);
165         } else {
166             getsect(item.plane.pln_x, item.plane.pln_y, &sect);
167             if (sect.sct_type != SCT_AIRPT)
168                 continue;
169             if (sect.sct_effic < 60 ||
170                 (sect.sct_own != player->cnum &&
171                  getrel(getnatp(sect.sct_own), player->cnum) < FRIENDLY))
172                 continue;
173         }
174         getvec(VT_ITEM, vec, (s_char *)&sect, EF_SECTOR);
175         if (type == EF_SHIP) {
176             eff = ((float)item.ship.shp_effic / 100.0);
177             mp = &mchr[(int)item.ship.shp_type];
178             if (opt_TRADESHIPS) {
179                 if (mp->m_flags & M_TRADE) {
180                     pr("WARNING: You only collect money from trade ships if you \"scuttle\" them!\n");
181                     sprintf(prompt,
182                             "Are you really sure that you want to scrap %s (n)? ",
183                             prship(&item.ship));
184                     if (!confirm(prompt)) {
185                         pr("%s not scrapped\n", prship(&item.ship));
186                         continue;
187                     }
188                 }
189             }
190             pr("%s", prship(&item.ship));
191             for (i = 1; i <= I_MAX; i++) {
192                 vec[i] += item.ship.shp_item[i];
193             }
194             vec[I_LCM] += mp->m_lcm * 2 / 3 * eff;
195             vec[I_HCM] += mp->m_hcm * 2 / 3 * eff;
196             getsect(item.ship.shp_x, item.ship.shp_y, &sect2);
197             snxtitem_all(&ni2, EF_PLANE);
198             while (nxtitem(&ni2, (s_char *)&plane)) {
199                 if (plane.pln_own == 0)
200                     continue;
201                 if (plane.pln_ship == item.ship.shp_uid) {
202                     wu(0, plane.pln_own,
203                        "Plane %d transferred off ship %d to %s\n",
204                        ni2.cur, item.ship.shp_uid,
205                        xyas(plane.pln_x, plane.pln_y, player->cnum));
206                     plane.pln_ship = -1;
207                     if (sect2.sct_own != plane.pln_own) {
208                         wu(0, plane.pln_own,
209                            "%s given to %s\n", prplane(&plane),
210                            cname(sect2.sct_own));
211                         wu(0, sect2.sct_own,
212                            "%s given to you by %s\n", prplane(&plane),
213                            cname(player->cnum));
214                     }
215                     makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
216                              plane.pln_x, plane.pln_y);
217                     plane.pln_own = sect2.sct_own;
218                     makenotlost(EF_PLANE, plane.pln_own, plane.pln_uid,
219                                 plane.pln_x, plane.pln_y);
220                     putplane(plane.pln_uid, (s_char *)&plane);
221                 }
222             }
223             snxtitem_all(&ni2, EF_LAND);
224             while (nxtitem(&ni2, (s_char *)&land)) {
225                 if (land.lnd_own == 0)
226                     continue;
227                 if (land.lnd_ship == item.ship.shp_uid) {
228                     wu(0, land.lnd_own,
229                        "Land unit %d transferred off ship %d to %s\n",
230                        ni2.cur, item.ship.shp_uid,
231                        xyas(land.lnd_x, land.lnd_y, player->cnum));
232                     land.lnd_ship = -1;
233                     if (sect2.sct_own != land.lnd_own) {
234                         wu(0, land.lnd_own,
235                            "%s given to %s\n", prland(&land),
236                            cname(sect2.sct_own));
237                         wu(0, sect2.sct_own,
238                            "%s given to you by %s\n", prland(&land),
239                            cname(player->cnum));
240                     }
241                     makelost(EF_LAND, land.lnd_own, land.lnd_uid,
242                              land.lnd_x, land.lnd_y);
243                     land.lnd_own = sect2.sct_own;
244                     makenotlost(EF_LAND, land.lnd_own, land.lnd_uid,
245                                 land.lnd_x, land.lnd_y);
246                     putland(land.lnd_uid, (s_char *)&land);
247                 }
248             }
249             makelost(EF_SHIP, item.ship.shp_own, item.ship.shp_uid,
250                      item.ship.shp_x, item.ship.shp_y);
251             item.ship.shp_own = 0;
252             putship(item.ship.shp_uid, (s_char *)&item.ship);
253         } else if (type == EF_LAND) {
254             eff = ((float)item.land.lnd_effic / 100.0);
255             lp = &lchr[(int)item.land.lnd_type];
256             pr("%s", prland(&item.land));
257             for (i = 1; i <= I_MAX; i++) {
258                 vec[i] += item.land.lnd_item[i];
259             }
260 /* Military, guns and shells are not required to build land units */
261 /*                      vec[I_MILIT] += total_mil(&item.land);*/
262 /*                      vec[I_GUN] += lp->l_gun * 2 / 3 * eff;*/
263 /*                      vec[I_SHELL] += lp->l_shell * 2 / 3 * eff;*/
264             vec[I_LCM] += lp->l_lcm * 2 / 3 * eff;
265             vec[I_HCM] += lp->l_hcm * 2 / 3 * eff;
266             getsect(item.land.lnd_x, item.land.lnd_y, &sect2);
267
268             snxtitem_all(&ni2, EF_LAND);
269             while (nxtitem(&ni2, (s_char *)&land)) {
270                 if (land.lnd_own == 0)
271                     continue;
272                 if (land.lnd_land == item.land.lnd_uid) {
273                     wu(0, land.lnd_own,
274                        "Land unit %d transferred off land unit %d to %s\n",
275                        land.lnd_uid, item.land.lnd_uid,
276                        xyas(land.lnd_x, land.lnd_y, player->cnum));
277                     land.lnd_land = -1;
278                     if (sect2.sct_own != land.lnd_own) {
279                         wu(0, land.lnd_own,
280                            "%s given to %s\n", prland(&land),
281                            cname(sect2.sct_own));
282                         wu(0, sect2.sct_own,
283                            "%s given to you by %s\n", prland(&land),
284                            cname(player->cnum));
285                     }
286                     makelost(EF_LAND, land.lnd_own, land.lnd_uid,
287                              land.lnd_x, land.lnd_y);
288                     land.lnd_own = sect2.sct_own;
289                     makenotlost(EF_LAND, land.lnd_own, land.lnd_uid,
290                                 land.lnd_x, land.lnd_y);
291                     putland(land.lnd_uid, (s_char *)&land);
292                 }
293             }
294
295             snxtitem_all(&ni2, EF_PLANE);
296             while (nxtitem(&ni2, (s_char *)&plane)) {
297                 if (plane.pln_own == 0)
298                     continue;
299                 if (plane.pln_land == item.land.lnd_uid) {
300                     wu(0, plane.pln_own,
301                        "Plane %d transferred off land unit %d to %s\n",
302                        ni2.cur, item.land.lnd_uid,
303                        xyas(plane.pln_x, plane.pln_y, player->cnum));
304                     plane.pln_land = -1;
305                     if (sect2.sct_own != plane.pln_own) {
306                         wu(0, plane.pln_own,
307                            "%s given to %s\n", prplane(&plane),
308                            cname(sect2.sct_own));
309                         wu(0, sect2.sct_own,
310                            "%s given to you by %s\n", prplane(&plane),
311                            cname(player->cnum));
312                     }
313                     makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
314                              plane.pln_x, plane.pln_y);
315                     plane.pln_own = sect2.sct_own;
316                     makenotlost(EF_PLANE, plane.pln_own, plane.pln_uid,
317                                 plane.pln_x, plane.pln_y);
318                     putplane(plane.pln_uid, (s_char *)&plane);
319                 }
320             }
321             makelost(EF_LAND, item.land.lnd_own, item.land.lnd_uid,
322                      item.land.lnd_x, item.land.lnd_y);
323             item.land.lnd_own = 0;
324             putland(item.land.lnd_uid, (s_char *)&item.land);
325         } else {
326             eff = ((float)item.land.lnd_effic / 100.0);
327             pp = &plchr[(int)item.plane.pln_type];
328             pr("%s", prplane(&item.plane));
329             vec[I_LCM] += pp->pl_lcm * 2 / 3 * eff;
330             vec[I_HCM] += pp->pl_hcm * 2 / 3 * eff;
331             vec[I_MILIT] += pp->pl_crew;
332             makelost(EF_PLANE, item.plane.pln_own, item.plane.pln_uid,
333                      item.plane.pln_x, item.plane.pln_y);
334             item.plane.pln_own = 0;
335             putplane(item.plane.pln_uid, (s_char *)&item.plane);
336         }
337         pr(" scrapped in %s\n",
338            xyas(sect.sct_x, sect.sct_y, player->cnum));
339         putvec(VT_ITEM, vec, (s_char *)&sect, EF_SECTOR);
340         putsect(&sect);
341     }
342     return RET_OK;
343 }