5 * (c) 2003 Mark Wooding
8 /*----- Licensing notice --------------------------------------------------*
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 /*----- Header files ------------------------------------------------------*/
36 /*----- Data structures ---------------------------------------------------*/
38 typedef struct world {
42 typedef struct worldinfo {
43 unsigned x, y, gov, eco, tech, pop, prod, rad;
46 /*----- The world type ----------------------------------------------------*/
48 static void world_fir(Tcl_Obj *o)
50 Tcl_Free(o->internalRep.otherValuePtr);
53 static int xtoi(unsigned x)
55 if (x >= '0' && x <= '9')
57 else if (x >= 'a' && x <= 'f')
58 return (x - 'a' + 10);
59 else if (x >= 'A' && x <= 'F')
60 return (x - 'A' + 10);
65 static Tcl_ObjType world_type;
67 static int world_sfa(Tcl_Interp *ti, Tcl_Obj *o)
72 char *p = Tcl_GetStringFromObj(o, &l);
75 for (i = 0; i < 12; i += 2) {
76 if (!isxdigit((unsigned char)p[i]) ||
77 !isxdigit((unsigned char)p[i + 1]))
79 ww.x[i >> 1] = (xtoi(p[i]) << 4) | (xtoi(p[i + 1]));
81 w = (world *)Tcl_Alloc(sizeof(*w));
83 o->internalRep.otherValuePtr = w;
84 o->typePtr = &world_type;
89 Tcl_SetResult(ti, "bad world seed string", TCL_STATIC);
93 static void world_us(Tcl_Obj *o)
96 world *w = o->internalRep.otherValuePtr;
103 for (i = 0; i < 6; i++, p += 2)
104 sprintf(p, "%02x", w->x[i]);
107 static void world_dir(Tcl_Obj *o, Tcl_Obj *oo)
109 world *w = (world *)Tcl_Alloc(sizeof(*w));
110 memcpy(w, o->internalRep.otherValuePtr, sizeof(world));
111 oo->internalRep.otherValuePtr = w;
112 oo->typePtr = &world_type;
113 Tcl_InvalidateStringRep(oo);
116 static /*const*/ Tcl_ObjType world_type = {
117 "elite-world", world_fir, world_dir, world_us, world_sfa
120 static world *world_get(Tcl_Interp *ti, Tcl_Obj *o)
122 if (Tcl_ConvertToType(ti, o, &world_type) != TCL_OK)
124 return (o->internalRep.otherValuePtr);
127 static Tcl_Obj *world_new(const world *w)
130 Tcl_Obj *o = Tcl_NewObj();
131 ww = (world *)Tcl_Alloc(sizeof(*ww));
133 o->internalRep.otherValuePtr = ww;
134 o->typePtr = &world_type;
135 Tcl_InvalidateStringRep(o);
139 /*----- Elite-specific hacking --------------------------------------------*
141 * Taken from `Elite: The New Kind' by Christian Pinder.
144 static void waggle(world *w, world *ww)
148 /* --- What goes on --- *
150 * 16-bit add of all three words, shift up, and insert the new value at the
157 h += w->x[3] + (l >= 0x100);
158 l &= 0xff; h &= 0xff;
160 h += w->x[5] + (l >= 0x100);
161 l &= 0xff; h &= 0xff;
162 ww->x[0] = w->x[2]; ww->x[1] = w->x[3];
163 ww->x[2] = w->x[4]; ww->x[3] = w->x[5];
164 ww->x[4] = l; ww->x[5] = h;
167 /*----- Tcl commands ------------------------------------------------------*/
169 static int err(Tcl_Interp *ti, /*const*/ char *p)
171 Tcl_SetResult(ti, p, TCL_STATIC);
175 /* --- elite-nextworld SEED --- */
177 static int cmd_nextworld(ClientData cd, Tcl_Interp *ti,
178 int objc, Tcl_Obj *const *objv)
182 return (err(ti, "usage: elite-nextworld SEED"));
183 if ((w = world_get(ti, objv[1])) == 0)
189 Tcl_SetObjResult(ti, world_new(&ww));
193 /* --- elite-nextgalaxy SEED --- */
195 static int cmd_nextgalaxy(ClientData cd, Tcl_Interp *ti,
196 int objc, Tcl_Obj *const *objv)
202 return (err(ti, "usage: elite-nextgalaxy SEED"));
203 if ((w = world_get(ti, objv[1])) == 0)
205 for (i = 0; i < 6; i++)
206 ww.x[i] = ((w->x[i] << 1) | (w->x[i] >> 7)) & 0xff;
207 Tcl_SetObjResult(ti, world_new(&ww));
211 /* --- elite-worldinfo ARR SEED --- */
213 static void getworldinfo(worldinfo *wi, world *w)
217 wi->gov = (w->x[2] >> 3) & 0x07;
218 wi->eco = w->x[1] & 0x07;
221 wi->tech = ((wi->eco ^ 7) + (w->x[3] & 0x03) +
222 (wi->gov >> 1) + (wi->gov & 0x01) + 1);
223 wi->pop = wi->tech * 4 + wi->gov + wi->eco - 3;
224 wi->prod = ((wi->eco ^ 7) + 3) * (wi->gov + 4) * wi->pop * 8;
225 wi->rad = (((w->x[5] & 0x0f) + 11) << 8) + w->x[3];
228 static const char digrams[] =
229 "abouseitiletstonlonuthnoallexegezacebisouses"
230 "armaindirea?eratenberalavetiedorquanteisrion";
232 static const char *const desc[][5] = {
233 /* 0 */ { "fabled", "notable", "well known", "famous", "noted" },
234 /* 1 */ { "very ", "mildly ", "most ", "reasonably ", "" },
235 /* 2 */ { "ancient", "<20>", "great", "vast", "pink" },
236 /* 3 */ { "<29> <28> plantations", "mountains", "<27>",
237 "<19> forests", "oceans" },
238 /* 4 */ { "shyness", "silliness", "mating traditions",
239 "loathing of <5>", "love for <5>" },
240 /* 5 */ { "food blenders", "tourists", "poetry", "discos", "<13>" },
241 /* 6 */ { "talking tree", "crab", "bat", "lobst", "%R" },
242 /* 7 */ { "beset", "plagued", "ravaged", "cursed", "scourged" },
243 /* 8 */ { "<21> civil war", "<26> <23> <24>s",
244 "a <26> disease", "<21> earthquakes", "<21> solar activity" },
245 /* 9 */ { "its <2> <3>", "the %I <23> <24>",
246 "its inhabitants' <25> <4>", "<32>", "its <12> <13>" },
247 /* 10 */ { "juice", "brandy", "water", "brew", "gargle blasters" },
248 /* 11 */ { "%R", "%I <24>", "%I %R", "%I <26>", "<26> %R" },
249 /* 12 */ { "fabulous", "exotic", "hoopy", "unusual", "exciting" },
250 /* 13 */ { "cuisine", "night life", "casinos", "sit coms", " <32>" },
251 /* 14 */ { "%H", "The planet %H", "The world %H",
252 "This planet", "This world" },
253 /* 15 */ { "n unremarkable", " boring", " dull", " tedious", " revolting" },
254 /* 16 */ { "planet", "world", "place", "little planet", "dump" },
255 /* 17 */ { "wasp", "moth", "grub", "ant", "%R" },
256 /* 18 */ { "poet", "arts graduate", "yak", "snail", "slug" },
257 /* 19 */ { "tropical", "dense", "rain", "impenetrable", "exuberant" },
258 /* 20 */ { "funny", "weird", "unusual", "strange", "peculiar" },
259 /* 21 */ { "frequent", "occasional", "unpredictable", "dreadful", "deadly" },
260 /* 22 */ { "<1><0> for <9>", "<1><0> for <9> and <9>",
261 "<7> by <8>", "<1><0> for <9> but <7> by <8>","a<15> <16>" },
262 /* 23 */ { "<26>", "mountain", "edible", "tree", "spotted" },
263 /* 24 */ { "<30>", "<31>", "<6>oid", "<18>", "<17>" },
264 /* 25 */ { "ancient", "exceptional", "eccentric", "ingrained", "<20>" },
265 /* 26 */ { "killer", "deadly", "evil", "lethal", "vicious" },
266 /* 27 */ { "parking meters", "dust clouds", "ice bergs",
267 "rock formations", "volcanoes" },
268 /* 28 */ { "plant", "tulip", "banana", "corn", "%Rweed" },
269 /* 29 */ { "%R", "%I %R", "%I <26>", "inhabitant", "%I %R" },
270 /* 30 */ { "shrew", "beast", "bison", "snake", "wolf" },
271 /* 31 */ { "leopard", "cat", "monkey", "goat", "fish" },
272 /* 32 */ { "<11> <10>", "%I <30> <33>", "its <12> <31> <33>",
273 "<34> <35>", "<11> <10>" },
274 /* 33 */ { "meat", "cutlet", "steak", "burgers", "soup" },
275 /* 34 */ { "ice", "mud", "Zero-G", "vacuum", "%I ultra" },
276 /* 35 */ { "hockey", "cricket", "karate", "polo", "tennis" }
279 static int mangle(world *w)
283 x = (w->x[2] << 1) & 0xff;
291 a = (a + x + w->x[5]) & 0xff;
297 static void goatsoup(Tcl_Obj *d, const char *pn, world *w, const char *p)
300 size_t sz = strcspn(p, "<%");
305 Tcl_AppendToObj(d, (char *)p, sz);
312 i = strtoul(p + 1, (char **)&p, 10);
315 goatsoup(d, pn, w, desc[i][(j >= 0x33) + (j >= 0x66) +
316 (j >= 0x99) + (j >= 0xcc)]);
322 Tcl_AppendToObj(d, (char *)pn, -1);
326 Tcl_AppendToObj(d, (char *)pn,
327 (pn[sz] == 'i' || pn[sz] == 'e') ? sz : sz + 1);
328 Tcl_AppendToObj(d, "ian", 3);
331 n = (mangle(w) & 0x03) + 1;
334 unsigned i = mangle(w) & 0x3e;
336 if (digrams[i] != '?')
339 *buf = toupper(*buf);
340 Tcl_AppendToObj(d, buf, q - buf);
352 static int cmd_worldinfo(ClientData cd, Tcl_Interp *ti,
353 int objc, Tcl_Obj *const *objv)
364 /* --- Check arguments --- */
367 return (err(ti, "usage: elite-worldinfo ARR SEED"));
368 if ((w = world_get(ti, objv[2])) == 0)
370 arr = Tcl_GetString(objv[1]);
372 /* --- Get the basic information --- */
374 getworldinfo(&wi, w);
375 Tcl_UnsetVar(ti, arr, 0);
376 if (!Tcl_SetVar2Ex(ti, arr, "x", Tcl_NewIntObj(wi.x * 4),
377 TCL_LEAVE_ERR_MSG) ||
378 !Tcl_SetVar2Ex(ti, arr, "y", Tcl_NewIntObj(wi.y * 2),
379 TCL_LEAVE_ERR_MSG) ||
380 !Tcl_SetVar2Ex(ti, arr, "government", Tcl_NewIntObj(wi.gov),
381 TCL_LEAVE_ERR_MSG) ||
382 !Tcl_SetVar2Ex(ti, arr, "economy", Tcl_NewIntObj(wi.eco),
383 TCL_LEAVE_ERR_MSG) ||
384 !Tcl_SetVar2Ex(ti, arr, "techlevel", Tcl_NewIntObj(wi.tech),
385 TCL_LEAVE_ERR_MSG) ||
386 !Tcl_SetVar2Ex(ti, arr, "population", Tcl_NewIntObj(wi.pop),
387 TCL_LEAVE_ERR_MSG) ||
388 !Tcl_SetVar2Ex(ti, arr, "productivity", Tcl_NewIntObj(wi.prod),
389 TCL_LEAVE_ERR_MSG) ||
390 !Tcl_SetVar2Ex(ti, arr, "radius", Tcl_NewIntObj(wi.rad),
391 TCL_LEAVE_ERR_MSG) ||
392 !Tcl_SetVar2Ex(ti, arr, "seed", objv[2],
396 /* --- Work out the inhabitants --- */
398 if (!(w->x[4] & 0x80)) {
399 if (!Tcl_SetVar2(ti, arr, "inhabitants", "humans", TCL_LEAVE_ERR_MSG))
402 static const char *const id_a[] = { "large", "fierce", "small" };
403 static const char *const id_b[] = { "green", "red", "yellow", "blue",
404 "black", "harmless" };
405 static const char *const id_c[] = { "slimy", "bug-eyed", "horned",
406 "bony", "fat", "furry" };
407 static const char *const id_d[] = { "rodents", "frogs", "lizards",
408 "lobsters", "birds", "humanoids",
409 "felines", "insects" };
411 o = Tcl_NewListObj(0, 0);
412 j = (w->x[5] >> 2) & 0x07;
414 Tcl_ListObjAppendElement(ti, o, Tcl_NewStringObj(id_a[j], -1));
415 j = (w->x[5] >> 5) & 0x07;
417 Tcl_ListObjAppendElement(ti, o, Tcl_NewStringObj(id_b[j], -1));
418 j = (w->x[1] ^ w->x[3]) & 0x07;
420 Tcl_ListObjAppendElement(ti, o, Tcl_NewStringObj(id_c[j], -1));
422 Tcl_ListObjAppendElement(ti, o, Tcl_NewStringObj(id_d[j & 0x07], -1));
423 if (!Tcl_SetVar2Ex(ti, arr, "inhabitants", o, TCL_LEAVE_ERR_MSG))
427 /* --- Work out the planet name --- */
429 n = (w->x[0] & 0x40) ? 4 : 3;
437 if (digrams[j] != '?')
443 *buf = toupper(*buf);
444 if (!Tcl_SetVar2Ex(ti, arr, "name", Tcl_NewStringObj(buf, -1),
448 /* --- Finally work out the goat-soup description --- */
451 o = Tcl_NewStringObj(0, 0);
452 goatsoup(o, buf, &ww, "<14> is <22>.");
453 if (!Tcl_SetVar2Ex(ti, arr, "description", o, TCL_LEAVE_ERR_MSG))
458 /* --- elite-market ARR SEED [FLUC] --- */
460 static const struct item {
461 /*const*/ char *name;
467 { "food", 19, -2, 6, 0x01 },
468 { "textiles", 20, -1, 10, 0x03 },
469 { "radioactives", 65, -3, 2, 0x07 },
470 { "slaves", 40, -5, 226, 0x1f },
471 { "liquor-wines", 83, -5, 251, 0x0f },
472 { "luxuries", 196, 8, 54, 0x03 },
473 { "narcotics", 235, 29, 8, 0x78 },
474 { "computers", 154, 14, 56, 0x03 },
475 { "machinery", 117, 6, 40, 0x07 },
476 { "alloys", 78, 1, 17, 0x1f },
477 { "firearms", 124, 13, 29, 0x07 },
478 { "furs", 176, -9, 220, 0x3f },
479 { "minerals", 32, -1, 53, 0x03 },
480 { "gold", 97, -1, 66, 0x07 },
481 { "platinum", 171, -2, 55, 0x1f },
482 { "gem-stones", 45, -1, 250, 0x0f },
483 { "alien-items", 53, 15, 192, 0x07 },
487 static int cmd_market(ClientData cd, Tcl_Interp *ti,
488 int objc, Tcl_Obj *const *objv)
493 const struct item *i;
496 if (objc < 3 || objc > 5)
497 return (err(ti, "usage: elite-market ARR SEED [FLUC]"));
498 if ((w = world_get(ti, objv[2])) == 0)
500 arr = Tcl_GetString(objv[1]);
501 if (objc >= 4 && Tcl_GetIntFromObj(ti, objv[3], &fluc) != TCL_OK)
503 getworldinfo(&wi, w);
505 Tcl_UnsetVar(ti, arr, 0);
506 for (i = items; i->name; i++) {
509 pr = (i->base + (fluc & i->mask) + (wi.eco * i->var)) & 0xff;
510 qt = (i->qty + (fluc & i->mask) - (wi.eco * i->var)) & 0xff;
513 oo[0] = Tcl_NewIntObj(pr << 2);
514 oo[1] = Tcl_NewIntObj(qt & 0x3f);
515 if (!Tcl_SetVar2Ex(ti, arr, i->name, Tcl_NewListObj(2, oo),
522 /*----- Commander file decomposition --------------------------------------*/
524 static unsigned cksum(const unsigned char *p, size_t sz)
526 unsigned a = 0x49, c = 0;
539 /* --- The big translation table --- */
542 /*const*/ char *name;
544 int (*get)(Tcl_Interp *, /*const*/ char *,
545 const unsigned char *, const struct cmddata *);
546 int (*put)(Tcl_Interp *, /*const*/ char *,
547 unsigned char *, const struct cmddata *);
551 static int get_byte(Tcl_Interp *ti, /*const*/ char *arr,
552 const unsigned char *p, const struct cmddata *cd)
554 return (!Tcl_SetVar2Ex(ti, arr, cd->name,
555 Tcl_NewIntObj(*p - cd->x), TCL_LEAVE_ERR_MSG));
558 static int get_seed(Tcl_Interp *ti, /*const*/ char *arr,
559 const unsigned char *p, const struct cmddata *cd)
564 return (!Tcl_SetVar2Ex(ti, arr, cd->name,
565 world_new(&w), TCL_LEAVE_ERR_MSG));
568 static int get_word(Tcl_Interp *ti, /*const*/ char *arr,
569 const unsigned char *p, const struct cmddata *cd)
571 return (!Tcl_SetVar2Ex(ti, arr, cd->name,
572 Tcl_NewLongObj((p[0] & 0xff) << 24 |
573 (p[1] & 0xff) << 16 |
579 static int get_hword(Tcl_Interp *ti, /*const*/ char *arr,
580 const unsigned char *p, const struct cmddata *cd)
582 return (!Tcl_SetVar2Ex(ti, arr, cd->name,
583 Tcl_NewLongObj((p[0] & 0xff) << 0 |
588 static int get_bool(Tcl_Interp *ti, /*const*/ char *arr,
589 const unsigned char *p, const struct cmddata *cd)
591 return (!Tcl_SetVar2Ex(ti, arr, cd->name,
592 Tcl_NewBooleanObj(*p), TCL_LEAVE_ERR_MSG));
595 static int get_items(Tcl_Interp *ti, /*const*/ char *arr,
596 const unsigned char *p, const struct cmddata *cd)
599 const struct item *i;
601 for (i = items; i->name; i++) {
602 sprintf(buf, "%s-%s", cd->name, i->name);
603 if (!Tcl_SetVar2Ex(ti, arr, buf,
604 Tcl_NewIntObj(*p++), TCL_LEAVE_ERR_MSG))
610 static int put_byte(Tcl_Interp *ti, /*const*/ char *arr,
611 unsigned char *p, const struct cmddata *cd)
616 if ((o = Tcl_GetVar2Ex(ti, arr, cd->name, TCL_LEAVE_ERR_MSG)) == 0 ||
617 Tcl_GetIntFromObj(ti, o, &i) != TCL_OK)
623 static int put_word(Tcl_Interp *ti, /*const*/ char *arr,
624 unsigned char *p, const struct cmddata *cd)
629 if ((o = Tcl_GetVar2Ex(ti, arr, cd->name, TCL_LEAVE_ERR_MSG)) == 0 ||
630 Tcl_GetLongFromObj(ti, o, &l) != TCL_OK)
632 p[0] = (l >> 24) & 0xff;
633 p[1] = (l >> 16) & 0xff;
634 p[2] = (l >> 8) & 0xff;
635 p[3] = (l >> 0) & 0xff;
639 static int put_hword(Tcl_Interp *ti, /*const*/ char *arr,
640 unsigned char *p, const struct cmddata *cd)
645 if ((o = Tcl_GetVar2Ex(ti, arr, cd->name, TCL_LEAVE_ERR_MSG)) == 0 ||
646 Tcl_GetLongFromObj(ti, o, &l) != TCL_OK)
648 p[0] = (l >> 0) & 0xff;
649 p[1] = (l >> 8) & 0xff;
653 static int put_const(Tcl_Interp *ti, /*const*/ char *arr,
654 unsigned char *p, const struct cmddata *cd)
660 static int put_seed(Tcl_Interp *ti, /*const*/ char *arr,
661 unsigned char *p, const struct cmddata *cd)
666 if ((o = Tcl_GetVar2Ex(ti, arr, cd->name, TCL_LEAVE_ERR_MSG)) == 0 ||
667 (w = world_get(ti, o)) == 0)
673 static int put_bool(Tcl_Interp *ti, /*const*/ char *arr,
674 unsigned char *p, const struct cmddata *cd)
679 if ((o = Tcl_GetVar2Ex(ti, arr, cd->name, TCL_LEAVE_ERR_MSG)) == 0 ||
680 Tcl_GetBooleanFromObj(ti, o, &b) != TCL_OK)
686 static int put_items(Tcl_Interp *ti, /*const*/ char *arr,
687 unsigned char *p, const struct cmddata *cd)
692 const struct item *i;
694 for (i = items; i->name; i++) {
695 sprintf(buf, "%s-%s", cd->name, i->name);
696 if ((o = Tcl_GetVar2Ex(ti, arr, buf, TCL_LEAVE_ERR_MSG)) == 0 ||
697 Tcl_GetIntFromObj(ti, o, &ii) != TCL_OK)
704 static struct cmddata cmdtab[] = {
705 { "mission", 0, get_byte, put_byte, 0 },
706 { "world-x", 1, get_byte, put_byte, 0 },
707 { "world-y", 2, get_byte, put_byte, 0 },
708 { "gal-seed", 3, get_seed, put_seed, 0 },
709 { "credits", 9, get_word, put_word, 0 },
710 { "fuel", 13, get_byte, put_byte, 0 },
711 { "", 14, 0, put_const, 4 },
712 { "gal-number", 15, get_byte, put_byte, -1 },
713 { "front-laser", 16, get_byte, put_byte, 0 },
714 { "rear-laser", 17, get_byte, put_byte, 0 },
715 { "left-laser", 18, get_byte, put_byte, 0 },
716 { "right-laser", 19, get_byte, put_byte, 0 },
717 { "cargo", 22, get_byte, put_byte, 2 },
718 { "hold", 23, get_items, put_items, 0 },
719 { "ecm", 40, get_bool, put_bool, 255 },
720 { "fuel-scoop", 41, get_bool, put_bool, 255 },
721 { "energy-bomb", 42, get_bool, put_bool, 127 },
722 { "energy-unit", 43, get_byte, put_byte, 0 },
723 { "docking-computer", 44, get_bool, put_bool, 255 },
724 { "gal-hyperdrive", 45, get_bool, put_bool, 255 },
725 { "escape-pod", 46, get_bool, put_bool, 255 },
726 { "missiles", 51, get_byte, put_byte, 0 },
727 { "legal-status", 52, get_byte, put_byte, 0 },
728 { "station", 53, get_items, put_items, 0 },
729 { "market-fluc", 70, get_byte, put_byte, 0 },
730 { "score", 71, get_hword, put_hword, 0 },
731 { "", 74, 0, put_const, 32 },
735 /* --- elite-unpackcmdr [-force] ARR DATA --- */
737 static int cmd_unpackcmdr(ClientData cd, Tcl_Interp *ti,
738 int objc, Tcl_Obj *const *objv)
741 unsigned char *p, *q;
745 const struct cmddata *c;
749 /* --- Read the arguments --- */
753 char *opt = Tcl_GetString(*objv);
754 if (strcmp(opt, "-force") == 0)
756 else if (strcmp(opt, "--") == 0) {
766 return (err(ti, "usage: elite-unpackcmdr [-force] ARR DATA"));
767 arr = Tcl_GetString(objv[0]);
768 p = Tcl_GetByteArrayFromObj(objv[1], &sz);
770 /* --- Check the data for correctness --- */
773 return (err(ti, "bad commander data (bad length)"));
775 if (!(f & f_force)) {
776 if (sz < 76 || p[74] != (ck ^ 0xa9) || p[75] != ck)
777 return (err(ti, "bad commander data (bad checksum)"));
778 for (q = p + 77; q < p + sz; q++)
780 return (err(ti, "bad commander data (bad data at end)"));
783 /* --- Deconstruct the data --- */
785 Tcl_UnsetVar(ti, arr, 0);
786 for (c = cmdtab; c->name; c++) {
787 if (c->get && c->get(ti, arr, p + c->off, c))
793 /* --- elite-packcmdr ARR --- */
795 static int cmd_packcmdr(ClientData cd, Tcl_Interp *ti,
796 int objc, Tcl_Obj *const *objv)
799 unsigned char p[256];
801 const struct cmddata *c;
804 return (err(ti, "usage: elite-packcmdr ARR"));
805 arr = Tcl_GetString(objv[1]);
807 memset(p, 0, sizeof(p));
808 for (c = cmdtab; c->name; c++) {
809 if (c->put && c->put(ti, arr, p + c->off, c))
816 Tcl_SetObjResult(ti, Tcl_NewByteArrayObj(p, sizeof(p)));
820 /*----- Optimizations -----------------------------------------------------*/
822 /* --- @elite-galaxylist SEED@ --- *
824 * Returns a SEED/X/Y list for the worlds in galaxy SEED.
827 static int cmd_galaxylist(ClientData cd, Tcl_Interp *ti,
828 int objc, Tcl_Obj *const *objv)
836 return (err(ti, "usage: elite-galaxylist SEED"));
837 if ((w = world_get(ti, objv[1])) == 0)
840 o = Tcl_NewListObj(0, 0);
841 for (i = 0; i < 256; i++) {
842 getworldinfo(&wi, &ww);
843 Tcl_ListObjAppendElement(ti, o, world_new(&ww));
844 Tcl_ListObjAppendElement(ti, o, Tcl_NewIntObj(wi.x * 4));
845 Tcl_ListObjAppendElement(ti, o, Tcl_NewIntObj(wi.y * 2));
846 waggle(&ww, &ww); waggle(&ww, &ww); waggle(&ww, &ww); waggle(&ww, &ww);
848 Tcl_SetObjResult(ti, o);
852 /* --- @elite-distance X Y XX YY@ --- *
854 * Returns the distance between two points.
857 static int cmd_distance(ClientData cd, Tcl_Interp *ti,
858 int objc, Tcl_Obj *const *objv)
864 return (err(ti, "usage: elite-distance X Y XX YY"));
865 if (Tcl_GetLongFromObj(ti, objv[1], &x) != TCL_OK ||
866 Tcl_GetLongFromObj(ti, objv[2], &y) != TCL_OK ||
867 Tcl_GetLongFromObj(ti, objv[3], &xx) != TCL_OK ||
868 Tcl_GetLongFromObj(ti, objv[4], &yy) != TCL_OK)
870 xx = xx >= x ? xx - x : x - xx; xx >>= 2; xx *= xx;
871 yy = yy >= y ? yy - y : y - yy; yy >>= 2; yy *= yy;
872 d = sqrt(xx + yy); d <<= 2;
873 Tcl_SetObjResult(ti, Tcl_NewLongObj(d));
877 /* --- @elite-adjacency ADJ LIST [DIST]@ --- *
879 * Construct an adjacency table from a world list.
882 static int cmd_adjacency(ClientData cd, Tcl_Interp *ti,
883 int objc, Tcl_Obj *const *objv)
888 long x, y, xx, yy, d;
897 if (objc < 3 || objc > 4)
898 return (err(ti, "usage: elite-adjacency ADJ LIST [DIST]"));
900 if (Tcl_ListObjGetElements(ti, objv[2], &oc, &ov) != TCL_OK)
903 return (err(ti, "world array not a multiple of three in size"));
904 if (objc >= 4 && Tcl_GetLongFromObj(ti, objv[3], &dd) != TCL_OK)
907 Tcl_InitHashTable(&done, TCL_ONE_WORD_KEYS);
908 Tcl_UnsetVar(ti, Tcl_GetString(a), 0);
911 for (i = 0; i < oc; i += 3) {
912 s = Tcl_GetString(ov[i]);
913 if (Tcl_ObjSetVar2(ti, a, ov[i], o, TCL_LEAVE_ERR_MSG) == 0)
916 for (i = 0; i < oc; i += 3) {
917 s = Tcl_GetString(ov[i]);
918 Tcl_CreateHashEntry(&done, s, &dummy);
919 if (Tcl_GetLongFromObj(ti, ov[i + 1], &x) != TCL_OK ||
920 Tcl_GetLongFromObj(ti, ov[i + 2], &y) != TCL_OK)
922 for (j = 0; j < oc; j += 3) {
923 ss = Tcl_GetString(ov[j]);
924 if (Tcl_FindHashEntry(&done, ss))
926 if (Tcl_GetLongFromObj(ti, ov[j + 1], &xx) != TCL_OK ||
927 Tcl_GetLongFromObj(ti, ov[j + 2], &yy) != TCL_OK)
929 xx = xx >= x ? xx - x : x - xx; xx >>= 2; xx *= xx;
930 yy = yy >= y ? yy - y : y - yy; yy >>= 2; yy *= yy;
931 d = sqrt(xx + yy); d <<= 2;
933 if (Tcl_ObjSetVar2(ti, a, ov[i], ov[j],
936 TCL_LEAVE_ERR_MSG)) == 0 ||
937 Tcl_ObjSetVar2(ti, a, ov[i], ov[j + 1],
940 TCL_LEAVE_ERR_MSG)) == 0 ||
941 Tcl_ObjSetVar2(ti, a, ov[i], ov[j + 2],
944 TCL_LEAVE_ERR_MSG)) == 0 ||
945 Tcl_ObjSetVar2(ti, a, ov[j], ov[i],
948 TCL_LEAVE_ERR_MSG)) == 0 ||
949 Tcl_ObjSetVar2(ti, a, ov[j], ov[i + 1],
952 TCL_LEAVE_ERR_MSG)) == 0 ||
953 Tcl_ObjSetVar2(ti, a, ov[j], ov[i + 2],
956 TCL_LEAVE_ERR_MSG)) == 0)
964 Tcl_DeleteHashTable(&done);
968 /*----- Initialization ----------------------------------------------------*/
970 int Elite_SafeInit(Tcl_Interp *ti)
972 static const struct cmd {
973 /*const*/ char *name;
974 Tcl_ObjCmdProc *proc;
976 { "elite-nextworld", cmd_nextworld },
977 { "elite-nextgalaxy", cmd_nextgalaxy },
978 { "elite-worldinfo", cmd_worldinfo },
979 { "elite-market", cmd_market },
980 { "elite-unpackcmdr", cmd_unpackcmdr },
981 { "elite-packcmdr", cmd_packcmdr },
982 { "elite-distance", cmd_distance },
983 { "elite-galaxylist", cmd_galaxylist },
984 { "elite-adjacency", cmd_adjacency },
989 for (c = cmds; c->name; c++)
990 Tcl_CreateObjCommand(ti, c->name, c->proc, 0, 0);
991 Tcl_RegisterObjType(&world_type);
992 if (Tcl_PkgProvide(ti, "elite-bits", "1.0.1"))
997 int Elite_Init(Tcl_Interp *ti)
999 return (Elite_SafeInit(ti));
1002 /*----- That's all, folks -------------------------------------------------*/