| 1 |
/* |
| 2 |
* CrossFire, A Multiplayer game for X-windows |
| 3 |
* |
| 4 |
* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
| 5 |
* Copyright (C) 2003 Mark Wedel & Crossfire Development Team |
| 6 |
* Copyright (C) 1992 Frank Tore Johansen |
| 7 |
* |
| 8 |
* This program is free software; you can redistribute it and/or modify |
| 9 |
* it under the terms of the GNU General Public License as published by |
| 10 |
* the Free Software Foundation; either version 2 of the License, or |
| 11 |
* (at your option) any later version. |
| 12 |
* |
| 13 |
* This program is distributed in the hope that it will be useful, |
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
* GNU General Public License for more details. |
| 17 |
* |
| 18 |
* You should have received a copy of the GNU General Public License |
| 19 |
* along with this program; if not, write to the Free Software |
| 20 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 |
* |
| 22 |
* The authors can be reached via e-mail at <crossfire@schmorp.de> |
| 23 |
*/ |
| 24 |
|
| 25 |
#include <global.h> |
| 26 |
#include <sproto.h> |
| 27 |
#include <spells.h> |
| 28 |
|
| 29 |
#ifndef sqr |
| 30 |
# define sqr(x) ((x)*(x)) |
| 31 |
#endif |
| 32 |
|
| 33 |
/* peterm: |
| 34 |
* write_rune: |
| 35 |
* op: rune writer |
| 36 |
* skop: skill object used for casting this rune |
| 37 |
* dir: orientation of rune, direction rune's contained spell will |
| 38 |
* be cast in, if applicable |
| 39 |
* inspell: spell object to put into the rune, can be null if doing |
| 40 |
* a marking rune. |
| 41 |
* level: level of casting of the rune |
| 42 |
* runename: name of the rune or message displayed by the rune for |
| 43 |
* a rune of marking |
| 44 |
*/ |
| 45 |
|
| 46 |
int |
| 47 |
write_rune (object *op, object *caster, object *spell, int dir, const char *runename) |
| 48 |
{ |
| 49 |
object *tmp, *rune_spell, *rune; |
| 50 |
char buf[MAX_BUF]; |
| 51 |
maptile *m; |
| 52 |
sint16 nx, ny; |
| 53 |
|
| 54 |
if (!dir) |
| 55 |
dir = 1; |
| 56 |
|
| 57 |
nx = op->x + freearr_x[dir]; |
| 58 |
ny = op->y + freearr_y[dir]; |
| 59 |
m = op->map; |
| 60 |
|
| 61 |
if (get_map_flags (m, &m, nx, ny, &nx, &ny) & (P_OUT_OF_MAP | P_SAFE | P_NO_MAGIC | P_NO_CLERIC)) |
| 62 |
{ |
| 63 |
new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!"); |
| 64 |
return 0; |
| 65 |
} |
| 66 |
|
| 67 |
for (tmp = m->at (nx, ny).bot; tmp; tmp = tmp->above) |
| 68 |
if (tmp->type == RUNE) |
| 69 |
break; |
| 70 |
|
| 71 |
if (tmp) |
| 72 |
{ |
| 73 |
new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune on top of another rune."); |
| 74 |
return 0; |
| 75 |
} |
| 76 |
|
| 77 |
if (spell->other_arch) |
| 78 |
rune_spell = arch_to_object (spell->other_arch); |
| 79 |
else |
| 80 |
{ |
| 81 |
/* Player specified spell. The player has to know the spell, so |
| 82 |
* lets just look through the players inventory see if they know it |
| 83 |
* use the item_matched_string for our typical matching method. |
| 84 |
*/ |
| 85 |
int bestmatch = 0, ms; |
| 86 |
|
| 87 |
if (!runename || *runename == 0) |
| 88 |
{ |
| 89 |
new_draw_info (NDI_UNIQUE, 0, op, "Write a rune of what?"); |
| 90 |
return 0; |
| 91 |
} |
| 92 |
|
| 93 |
rune_spell = NULL; |
| 94 |
for (tmp = op->inv; tmp; tmp = tmp->below) |
| 95 |
if (tmp->type == SPELL) |
| 96 |
{ |
| 97 |
ms = item_matched_string (op, tmp, runename); |
| 98 |
if (ms > bestmatch) |
| 99 |
{ |
| 100 |
bestmatch = ms; |
| 101 |
rune_spell = tmp; |
| 102 |
} |
| 103 |
} |
| 104 |
|
| 105 |
if (!rune_spell) |
| 106 |
{ |
| 107 |
new_draw_info_format (NDI_UNIQUE, 0, op, "You don't know any spell named %s", runename); |
| 108 |
return 0; |
| 109 |
} |
| 110 |
|
| 111 |
if (rune_spell->skill != spell->skill) |
| 112 |
{ |
| 113 |
new_draw_info_format (NDI_UNIQUE, 0, op, "You can't cast %s with %s", &rune_spell->name, &spell->name); |
| 114 |
return 0; |
| 115 |
} |
| 116 |
|
| 117 |
if (caster->path_denied & spell->path_attuned && !caster->flag [FLAG_WIZCAST]) |
| 118 |
{ |
| 119 |
new_draw_info_format (NDI_UNIQUE, 0, op, "%s belongs to a spell path denied to you.", &rune_spell->name); |
| 120 |
return 0; |
| 121 |
} |
| 122 |
|
| 123 |
if (caster_level (caster, rune_spell) < rune_spell->level && !caster->flag [FLAG_WIZCAST]) |
| 124 |
{ |
| 125 |
new_draw_info_format (NDI_UNIQUE, 0, op, "%s is beyond your ability to cast!", &rune_spell->name); |
| 126 |
return 0; |
| 127 |
} |
| 128 |
|
| 129 |
if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA) > op->stats.sp) |
| 130 |
{ |
| 131 |
new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough mana."); |
| 132 |
return 0; |
| 133 |
} |
| 134 |
|
| 135 |
if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE) > op->stats.grace) |
| 136 |
{ |
| 137 |
new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough grace."); |
| 138 |
return 0; |
| 139 |
} |
| 140 |
|
| 141 |
op->stats.grace -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE); |
| 142 |
op->stats.sp -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA); |
| 143 |
} |
| 144 |
|
| 145 |
/* already proper rune. Note this should only be the case if other_arch was set */ |
| 146 |
if (rune_spell->type == RUNE) |
| 147 |
rune = rune_spell; |
| 148 |
else |
| 149 |
{ |
| 150 |
rune = get_archetype (GENERIC_RUNE); |
| 151 |
sprintf (buf, "You set off a rune of %s\n", &rune_spell->name); |
| 152 |
rune->msg = buf; |
| 153 |
rune->insert (rune_spell->clone ()); |
| 154 |
|
| 155 |
if (spell->face != blank_face) |
| 156 |
rune->face = spell->face; |
| 157 |
} |
| 158 |
|
| 159 |
rune->level = caster_level (caster, spell); |
| 160 |
rune->stats.Cha = rune->level / 2; /* the invisibility parameter */ |
| 161 |
rune->direction = dir; /* where any spell will go upon detonation */ |
| 162 |
rune->set_owner (op); /* runes without need no owner */ |
| 163 |
set_spell_skill (op, caster, spell, rune); |
| 164 |
|
| 165 |
m->insert (rune, nx, ny, op); |
| 166 |
return 1; |
| 167 |
} |
| 168 |
|
| 169 |
/* move_rune: peterm |
| 170 |
comments on runes: |
| 171 |
rune->level : level at which rune will cast its spell. |
| 172 |
rune->hp : number of detonations before rune goes away |
| 173 |
rune->msg : message the rune displays when it goes off |
| 174 |
rune->direction : direction it will cast a spell in |
| 175 |
rune->dam : damage the rune will do if it doesn't cast spells |
| 176 |
rune->attacktype: type of damage it does, if not casting spells |
| 177 |
rune->other_arch: spell in the rune |
| 178 |
rune->Cha : how hidden the rune is |
| 179 |
rune->maxhp : number of spells the rune casts |
| 180 |
*/ |
| 181 |
void |
| 182 |
move_rune (object *op) |
| 183 |
{ |
| 184 |
/* runes of level zero cannot detonate. */ |
| 185 |
if (!op->level) |
| 186 |
return; |
| 187 |
|
| 188 |
int det = op->invisible; |
| 189 |
|
| 190 |
if (!(rndm (0, MAX (1, (op->stats.Cha)) - 1))) |
| 191 |
{ |
| 192 |
op->invisible = 0; |
| 193 |
op->speed_left -= 1; |
| 194 |
} |
| 195 |
else |
| 196 |
op->invisible = 1; |
| 197 |
|
| 198 |
if (op->invisible != det) |
| 199 |
update_object (op, UP_OBJ_CHANGE); |
| 200 |
} |
| 201 |
|
| 202 |
/* peterm: rune_attack |
| 203 |
* function handles those runes which detonate but do not cast spells. |
| 204 |
*/ |
| 205 |
void |
| 206 |
rune_attack (object *op, object *victim) |
| 207 |
{ |
| 208 |
if (victim) |
| 209 |
{ |
| 210 |
hit_player (victim, op->stats.dam, op, op->attacktype, 1); |
| 211 |
|
| 212 |
if (victim->destroyed ()) |
| 213 |
return; |
| 214 |
|
| 215 |
/* if there's a disease in the needle, put it in the player */ |
| 216 |
if (op->has_random_items ()) |
| 217 |
create_treasure (op->randomitems, op, 0, (victim->map ? victim->map->difficulty : 1), 0); |
| 218 |
|
| 219 |
if (op->inv && op->inv->type == DISEASE) |
| 220 |
{ |
| 221 |
object *disease = op->inv; |
| 222 |
|
| 223 |
infect_object (victim, disease, 1); |
| 224 |
disease->destroy (); |
| 225 |
} |
| 226 |
} |
| 227 |
else |
| 228 |
hit_map (op, 0, op->attacktype, 1); |
| 229 |
} |
| 230 |
|
| 231 |
/* This function generalizes attacks by runes/traps. This ought to make |
| 232 |
* it possible for runes to attack from the inventory, |
| 233 |
* it'll spring the trap on the victim. |
| 234 |
*/ |
| 235 |
void |
| 236 |
spring_trap (object *trap, object *victim) |
| 237 |
{ |
| 238 |
object *env; |
| 239 |
rv_vector rv; |
| 240 |
int i; |
| 241 |
|
| 242 |
/* Prevent recursion */ |
| 243 |
if (trap->stats.hp <= 0) |
| 244 |
return; |
| 245 |
|
| 246 |
if (QUERY_FLAG (trap, FLAG_IS_LINKED)) |
| 247 |
use_trigger (trap); |
| 248 |
|
| 249 |
/* Only living objects can trigger runes that don't cast spells, as |
| 250 |
* doing direct damage to a non-living object doesn't work anyway. |
| 251 |
* Typical example is an arrow attacking a door. |
| 252 |
*/ |
| 253 |
if (!QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch) |
| 254 |
return; |
| 255 |
|
| 256 |
trap->stats.hp--; /*decrement detcount */ |
| 257 |
|
| 258 |
if (victim && victim->type == PLAYER) |
| 259 |
new_draw_info (NDI_UNIQUE, 0, victim, trap->msg); |
| 260 |
|
| 261 |
/* Flash an image of the trap on the map so the poor sod |
| 262 |
* knows what hit him. |
| 263 |
*/ |
| 264 |
env = object_get_env_recursive (trap); |
| 265 |
|
| 266 |
/* If the victim is not next to this trap, don't set it off. |
| 267 |
* players shouldn't get hit by firing arrows at a door for example. |
| 268 |
* At the same time, the trap will stick around until detonated |
| 269 |
*/ |
| 270 |
get_rangevector (env, victim, &rv, 0); |
| 271 |
if (rv.distance > 1) |
| 272 |
return; |
| 273 |
|
| 274 |
trap_show (trap, env); |
| 275 |
|
| 276 |
if (victim->type == PLAYER) // only count players as enemies |
| 277 |
trap->enemy = victim; // set the victim as the traps enemy, so that summoned |
| 278 |
// creatures know who to attack. |
| 279 |
|
| 280 |
/* Only if it is a spell do we proceed here */ |
| 281 |
if ((trap->inv && trap->inv->type == SPELL) || (trap->other_arch && trap->other_arch->clone.type == SPELL)) |
| 282 |
{ |
| 283 |
|
| 284 |
if (trap->destroyed ()) |
| 285 |
return; |
| 286 |
|
| 287 |
// breaks summon golem spells, which, for inexplicable reasons, |
| 288 |
// do not work like summon golem spells at all but still require |
| 289 |
// direction "0" to work at all. |
| 290 |
//if (trap->direction) |
| 291 |
// rv.direction = trap->direction; |
| 292 |
|
| 293 |
for (i = 0; i < MAX (1, trap->stats.maxhp); i++) |
| 294 |
{ |
| 295 |
if (trap->inv) |
| 296 |
cast_spell (env, trap, trap->direction, trap->inv, NULL); |
| 297 |
else |
| 298 |
{ |
| 299 |
object *spell = arch_to_object (trap->other_arch); |
| 300 |
|
| 301 |
cast_spell (env, trap, trap->direction, spell, NULL); |
| 302 |
spell->destroy (); |
| 303 |
} |
| 304 |
} |
| 305 |
} |
| 306 |
else |
| 307 |
{ |
| 308 |
rune_attack (trap, victim); |
| 309 |
if (trap->destroyed ()) |
| 310 |
return; |
| 311 |
} |
| 312 |
|
| 313 |
if (trap->stats.hp <= 0) |
| 314 |
{ |
| 315 |
trap->type = SIGN; /* make the trap impotent */ |
| 316 |
trap->stats.food = 20; /* make it stick around until its spells are gone */ |
| 317 |
SET_FLAG (trap, FLAG_IS_USED_UP); |
| 318 |
} |
| 319 |
} |
| 320 |
|
| 321 |
/* dispel_rune: by peterm |
| 322 |
* dispels the target rune, depending on the level of the actor |
| 323 |
* and the level of the rune risk flag, if true, means that there is |
| 324 |
* a chance that the trap/rune will detonate |
| 325 |
*/ |
| 326 |
int |
| 327 |
dispel_rune (object *op, object *caster, object *spell, object *skill, int dir) |
| 328 |
{ |
| 329 |
object *tmp, *tmp2; |
| 330 |
int searchflag = 1, mflags; |
| 331 |
sint16 x, y; |
| 332 |
maptile *m; |
| 333 |
|
| 334 |
x = op->x + freearr_x[dir]; |
| 335 |
y = op->y + freearr_y[dir]; |
| 336 |
m = op->map; |
| 337 |
|
| 338 |
mflags = get_map_flags (m, &m, x, y, &x, &y); |
| 339 |
|
| 340 |
/* Should we perhaps not allow player to disable traps if a monster/ |
| 341 |
* player is standing on top? |
| 342 |
*/ |
| 343 |
if (mflags & P_OUT_OF_MAP) |
| 344 |
{ |
| 345 |
new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!"); |
| 346 |
return 0; |
| 347 |
} |
| 348 |
|
| 349 |
for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above) |
| 350 |
{ |
| 351 |
if (tmp->type == RUNE || tmp->type == TRAP) |
| 352 |
break; |
| 353 |
|
| 354 |
/* we could put a probability chance here, but since nothing happens |
| 355 |
* if you fail, no point on that. I suppose we could do a level |
| 356 |
* comparison so low level players can't erase high level players runes. |
| 357 |
*/ |
| 358 |
if (tmp->type == SIGN && !strcmp (tmp->arch->name, "rune_mark")) |
| 359 |
{ |
| 360 |
tmp->destroy (); |
| 361 |
new_draw_info (NDI_UNIQUE, 0, op, "You wipe out the rune of marking!"); |
| 362 |
return 1; |
| 363 |
} |
| 364 |
|
| 365 |
/* now search tmp's inventory for traps |
| 366 |
* This is for chests, where the rune is in the chests inventory. |
| 367 |
*/ |
| 368 |
for (tmp2 = tmp->inv; tmp2 != NULL; tmp2 = tmp2->below) |
| 369 |
{ |
| 370 |
if (tmp2->type == RUNE || tmp2->type == TRAP) |
| 371 |
{ |
| 372 |
tmp = tmp2; |
| 373 |
searchflag = 0; |
| 374 |
break; |
| 375 |
} |
| 376 |
} |
| 377 |
if (!searchflag) |
| 378 |
break; |
| 379 |
} |
| 380 |
|
| 381 |
/* no rune there. */ |
| 382 |
if (tmp == NULL) |
| 383 |
{ |
| 384 |
new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!"); |
| 385 |
return 0; |
| 386 |
} |
| 387 |
trap_disarm (op, tmp, 0, skill); |
| 388 |
return 1; |
| 389 |
|
| 390 |
} |
| 391 |
|
| 392 |
int |
| 393 |
trap_see (object *op, object *trap) |
| 394 |
{ |
| 395 |
int chance; |
| 396 |
|
| 397 |
chance = random_roll (0, 99, op, PREFER_HIGH);; |
| 398 |
|
| 399 |
/* decide if we see the rune or not */ |
| 400 |
if ((trap->stats.Cha == 1) || (chance > MIN (95, MAX (5, ((int) ((float) (op->map->difficulty |
| 401 |
+ trap->level + trap->stats.Cha - op->level) / 10.0 * 50.0)))))) |
| 402 |
{ |
| 403 |
new_draw_info_format (NDI_UNIQUE, 0, op, "You spot a %s!", &trap->name); |
| 404 |
return 1; |
| 405 |
} |
| 406 |
return 0; |
| 407 |
} |
| 408 |
|
| 409 |
int |
| 410 |
trap_show (object *trap, object *where) |
| 411 |
{ |
| 412 |
if (where == NULL) |
| 413 |
return 0; |
| 414 |
|
| 415 |
object *tmp = get_archetype ("runedet"); |
| 416 |
tmp->face = GET_ANIMATION (trap, 0); |
| 417 |
tmp->insert_at (where, 0); |
| 418 |
|
| 419 |
return 1; |
| 420 |
} |
| 421 |
|
| 422 |
int |
| 423 |
trap_disarm (object *disarmer, object *trap, int risk, object *skill) |
| 424 |
{ |
| 425 |
int trapworth; /* need to compute the experience worth of the trap |
| 426 |
before we kill it */ |
| 427 |
|
| 428 |
/* this formula awards a more reasonable amount of exp */ |
| 429 |
trapworth = MAX (1, trap->level) * disarmer->map->difficulty * |
| 430 |
sqr (MAX (trap->stats.dam, trap->inv ? trap->inv->level : 1)) / skill->level; |
| 431 |
|
| 432 |
if (!(random_roll (0, (MAX (2, MIN (20, trap->level - skill->level + 5 - disarmer->stats.Dex / 2)) - 1), disarmer, PREFER_LOW))) |
| 433 |
{ |
| 434 |
new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You successfully disarm the %s!", &trap->name); |
| 435 |
trap->destroy (1); |
| 436 |
|
| 437 |
/* If it is your own trap, (or any players trap), don't you don't |
| 438 |
* get exp for it. |
| 439 |
*/ |
| 440 |
if (trap->owner && trap->owner->type != PLAYER && risk) |
| 441 |
return trapworth; |
| 442 |
else |
| 443 |
return 1; /* give minimal exp and say success */ |
| 444 |
} |
| 445 |
else |
| 446 |
{ |
| 447 |
new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You fail to disarm the %s.", &trap->name); |
| 448 |
if (!(random_roll (0, (MAX (2, skill->level - trap->level + disarmer->stats.Dex / 2 - 6)) - 1, disarmer, PREFER_LOW)) && risk) |
| 449 |
{ |
| 450 |
new_draw_info (NDI_UNIQUE, 0, disarmer, "In fact, you set it off!"); |
| 451 |
spring_trap (trap, disarmer); |
| 452 |
} |
| 453 |
return 0; |
| 454 |
} |
| 455 |
} |
| 456 |
|
| 457 |
|
| 458 |
/* traps need to be adjusted for the difficulty of the map. The |
| 459 |
* default traps are too strong for wimpy level 1 players, and |
| 460 |
* unthreatening to anyone of high level |
| 461 |
*/ |
| 462 |
|
| 463 |
void |
| 464 |
trap_adjust (object *trap, int difficulty) |
| 465 |
{ |
| 466 |
int i; |
| 467 |
|
| 468 |
/* now we set the trap level to match the difficulty of the level |
| 469 |
* the formula below will give a level from 1 to (2*difficulty) with |
| 470 |
* a peak probability at difficulty |
| 471 |
*/ |
| 472 |
|
| 473 |
trap->level = rndm (0, difficulty - 1) + rndm (0, difficulty - 1); |
| 474 |
if (trap->level < 1) |
| 475 |
trap->level = 1; |
| 476 |
|
| 477 |
/* set the hiddenness of the trap, similar formula to above */ |
| 478 |
trap->stats.Cha = rndm (0, 19) + rndm (0, difficulty - 1) + rndm (0, difficulty - 1); |
| 479 |
|
| 480 |
if (!trap->other_arch && !trap->inv) |
| 481 |
{ |
| 482 |
/* set the damage of the trap. |
| 483 |
* we get 0-4 pts of damage per level of difficulty of the map in |
| 484 |
* the trap |
| 485 |
*/ |
| 486 |
|
| 487 |
trap->stats.dam = 0; |
| 488 |
for (i = 0; i < difficulty; i++) |
| 489 |
trap->stats.dam += rndm (0, 4); |
| 490 |
|
| 491 |
/* the poison trap special case */ |
| 492 |
if (trap->attacktype & AT_POISON) |
| 493 |
{ |
| 494 |
trap->stats.dam = rndm (0, difficulty - 1); |
| 495 |
if (trap->stats.dam < 1) |
| 496 |
trap->stats.dam = 1; |
| 497 |
} |
| 498 |
|
| 499 |
/* so we get an appropriate amnt of exp for AT_DEATH traps */ |
| 500 |
if (trap->attacktype & AT_DEATH) |
| 501 |
trap->stats.dam = 127; |
| 502 |
} |
| 503 |
|
| 504 |
} |
