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- /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
- /* trap.c - version 1.0.3 */
-
- #include <stdio.h>
- #include "hack.h"
-
- extern struct monst *makemon();
-
- char vowels[] = "aeiou";
-
- char *traps[] = {
- " bear trap",
- "n arrow trap",
- " dart trap",
- " trapdoor",
- " teleportation trap",
- " pit",
- " sleeping gas trap",
- " piercer",
- " mimic"
- };
-
- struct trap *
- maketrap(x,y,typ)
- register x,y,typ;
- {
- register struct trap *ttmp;
-
- ttmp = newtrap();
- ttmp->ttyp = typ;
- ttmp->tseen = 0;
- ttmp->once = 0;
- ttmp->tx = x;
- ttmp->ty = y;
- ttmp->ntrap = ftrap;
- ftrap = ttmp;
- return(ttmp);
- }
-
- dotrap(trap) register struct trap *trap; {
- register int ttype = trap->ttyp;
-
- nomul(0);
- if(trap->tseen && !rn2(5) && ttype != PIT)
- pline("You escape a%s.", traps[ttype]);
- else {
- trap->tseen = 1;
- switch(ttype) {
- case SLP_GAS_TRAP:
- pline("A cloud of gas puts you to sleep!");
- nomul(-rnd(25));
- break;
- case BEAR_TRAP:
- if(Levitation) {
- pline("You float over a bear trap.");
- break;
- }
- u.utrap = 4 + rn2(4);
- u.utraptype = TT_BEARTRAP;
- pline("A bear trap closes on your foot!");
- break;
- case PIERC:
- deltrap(trap);
- if(makemon(PM_PIERCER,u.ux,u.uy)) {
- pline("A piercer suddenly drops from the ceiling!");
- if(uarmh)
- pline("Its blow glances off your helmet.");
- else
- (void) thitu(3,d(4,6),"falling piercer");
- }
- break;
- case ARROW_TRAP:
- pline("An arrow shoots out at you!");
- if(!thitu(8,rnd(6),"arrow")){
- mksobj_at(ARROW, u.ux, u.uy);
- fobj->quan = 1;
- }
- break;
- case TRAPDOOR:
- if(!xdnstair) {
- pline("A trap door in the ceiling opens and a rock falls on your head!");
- if(uarmh) pline("Fortunately, you are wearing a helmet!");
- losehp(uarmh ? 2 : d(2,10),"falling rock");
- mksobj_at(ROCK, u.ux, u.uy);
- fobj->quan = 1;
- stackobj(fobj);
- if(Invisible) newsym(u.ux, u.uy);
- } else {
- register int newlevel = dlevel + 1;
- while(!rn2(4) && newlevel < 29)
- newlevel++;
- pline("A trap door opens up under you!");
- if(Levitation || u.ustuck) {
- pline("For some reason you don't fall in.");
- break;
- }
-
- goto_level(newlevel, FALSE);
- }
- break;
- case DART_TRAP:
- pline("A little dart shoots out at you!");
- if(thitu(7,rnd(3),"little dart")) {
- if(!rn2(6))
- poisoned("dart","poison dart");
- } else {
- mksobj_at(DART, u.ux, u.uy);
- fobj->quan = 1;
- }
- break;
- case TELEP_TRAP:
- if(trap->once) {
- deltrap(trap);
- newsym(u.ux,u.uy);
- vtele();
- } else {
- newsym(u.ux,u.uy);
- tele();
- }
- break;
- case PIT:
- if(Levitation) {
- pline("A pit opens up under you!");
- pline("You don't fall in!");
- break;
- }
- pline("You fall into a pit!");
- u.utrap = rn1(6,2);
- u.utraptype = TT_PIT;
- losehp(rnd(6),"fall into a pit");
- selftouch("Falling, you");
- break;
- default:
- impossible("You hit a trap of type %u", trap->ttyp);
- }
- }
- }
-
- mintrap(mtmp) register struct monst *mtmp; {
- register struct trap *trap = t_at(mtmp->mx, mtmp->my);
- register int wasintrap = mtmp->mtrapped;
-
- if(!trap) {
- mtmp->mtrapped = 0; /* perhaps teleported? */
- } else if(wasintrap) {
- if(!rn2(40)) mtmp->mtrapped = 0;
- } else {
- register int tt = trap->ttyp;
- #ifdef DGK
- /* A bug fix for dumb messages by ab@unido.
- */
- int in_sight = cansee(mtmp->mx,mtmp->my)
- && (!mtmp->minvis || See_invisible);
- #else
- int in_sight = cansee(mtmp->mx,mtmp->my);
- #endif DGK
- extern char mlarge[];
-
- if(mtmp->mtrapseen & (1 << tt)) {
- /* he has been in such a trap - perhaps he escapes */
- if(rn2(4)) return(0);
- }
- mtmp->mtrapseen |= (1 << tt);
- switch (tt) {
- case BEAR_TRAP:
- if(index(mlarge, mtmp->data->mlet)) {
- if(in_sight)
- pline("%s is caught in a bear trap!",
- Monnam(mtmp));
- else
- if(mtmp->data->mlet == 'o')
- pline("You hear the roaring of an angry bear!");
- mtmp->mtrapped = 1;
- }
- break;
- case PIT:
- /* there should be a mtmp/data -> floating */
- if(!index("EywBfk'& ", mtmp->data->mlet)) { /* ab */
- mtmp->mtrapped = 1;
- if(in_sight)
- pline("%s falls in a pit!", Monnam(mtmp));
- }
- break;
- case SLP_GAS_TRAP:
- if(!mtmp->msleep && !mtmp->mfroz) {
- mtmp->msleep = 1;
- if(in_sight)
- pline("%s suddenly falls asleep!",
- Monnam(mtmp));
- }
- break;
- case TELEP_TRAP:
- rloc(mtmp);
- if(in_sight && !cansee(mtmp->mx,mtmp->my))
- pline("%s suddenly disappears!",
- Monnam(mtmp));
- break;
- case ARROW_TRAP:
- if(in_sight) {
- pline("%s is hit by an arrow!",
- Monnam(mtmp));
- }
- mtmp->mhp -= 3;
- break;
- case DART_TRAP:
- if(in_sight) {
- pline("%s is hit by a dart!",
- Monnam(mtmp));
- }
- mtmp->mhp -= 2;
- /* not mondied here !! */
- break;
- case TRAPDOOR:
- if(!xdnstair) {
- mtmp->mhp -= 10;
- if(in_sight)
- pline("A trap door in the ceiling opens and a rock hits %s!", mon_nam(mtmp));
- break;
- }
- if(mtmp->data->mlet != 'w'){
- fall_down(mtmp);
- if(in_sight)
- pline("Suddenly, %s disappears out of sight.", mon_nam(mtmp));
- return(2); /* no longer on this level */
- }
- break;
- case PIERC:
- break;
- default:
- impossible("Some monster encountered a strange trap.");
- }
- }
- return(mtmp->mtrapped);
- }
-
- selftouch(arg) char *arg; {
- if(uwep && uwep->otyp == DEAD_COCKATRICE){
- pline("%s touch the dead cockatrice.", arg);
- pline("You turn to stone.");
- killer = objects[uwep->otyp].oc_name;
- done("died");
- }
- }
-
- float_up(){
- if(u.utrap) {
- if(u.utraptype == TT_PIT) {
- u.utrap = 0;
- pline("You float up, out of the pit!");
- } else {
- pline("You float up, only your leg is still stuck.");
- }
- } else
- pline("You start to float in the air!");
- }
-
- float_down(){
- register struct trap *trap;
- pline("You float gently to the ground.");
- if(trap = t_at(u.ux,u.uy))
- switch(trap->ttyp) {
- case PIERC:
- break;
- case TRAPDOOR:
- if(!xdnstair || u.ustuck) break;
- /* fall into next case */
- default:
- dotrap(trap);
- }
- pickup(1);
- }
-
- vtele() {
- #include "mkroom.h"
- register struct mkroom *croom;
- for(croom = &rooms[0]; croom->hx >= 0; croom++)
- if(croom->rtype == VAULT) {
- register x,y;
-
- x = rn2(2) ? croom->lx : croom->hx;
- y = rn2(2) ? croom->ly : croom->hy;
- if(teleok(x,y)) {
- teleds(x,y);
- return;
- }
- }
- tele();
- }
-
- tele() {
- extern coord getpos();
- coord cc;
- register int nux,nuy;
-
- if(Teleport_control) {
- pline("To what position do you want to be teleported?");
- cc = getpos(1, "the desired position"); /* 1: force valid */
- /* possible extensions: introduce a small error if
- magic power is low; allow transfer to solid rock */
- if(teleok(cc.x, cc.y)){
- teleds(cc.x, cc.y);
- return;
- }
- pline("Sorry ...");
- }
- do {
- nux = rnd(COLNO-1);
- nuy = rn2(ROWNO);
- } while(!teleok(nux, nuy));
- teleds(nux, nuy);
- }
-
- teleds(nux, nuy)
- register int nux,nuy;
- {
- if(Punished) unplacebc();
- unsee();
- u.utrap = 0;
- u.ustuck = 0;
- u.ux = nux;
- u.uy = nuy;
- setsee();
- if(Punished) placebc(1);
- if(u.uswallow){
- u.uswldtim = u.uswallow = 0;
- docrt();
- }
- nomul(0);
- if(levl[nux][nuy].typ == POOL && !Levitation)
- drown();
- (void) inshop();
- pickup(1);
- if(!Blind) read_engr_at(u.ux,u.uy);
- }
-
- teleok(x,y) register int x,y; { /* might throw him into a POOL */
- return( isok(x,y) && !IS_ROCK(levl[x][y].typ) && !m_at(x,y) &&
- !sobj_at(ENORMOUS_ROCK,x,y) && !t_at(x,y)
- );
- /* Note: gold is permitted (because of vaults) */
- }
-
- dotele() {
- extern char pl_character[];
-
- if(
- #ifdef WIZARD
- !wizard &&
- #endif WIZARD
- (!Teleportation || u.ulevel < 6 ||
- (pl_character[0] != 'W' && u.ulevel < 10))) {
- pline("You are not able to teleport at will.");
- return(0);
- }
- if(u.uhunger <= 100 || u.ustr < 6) {
- pline("You miss the strength for a teleport spell.");
- return(1);
- }
- tele();
- morehungry(100);
- return(1);
- }
-
- placebc(attach) int attach; {
- if(!uchain || !uball){
- impossible("Where are your chain and ball??");
- return;
- }
- uball->ox = uchain->ox = u.ux;
- uball->oy = uchain->oy = u.uy;
- if(attach){
- uchain->nobj = fobj;
- fobj = uchain;
- if(!carried(uball)){
- uball->nobj = fobj;
- fobj = uball;
- }
- }
- }
-
- unplacebc(){
- if(!carried(uball)){
- freeobj(uball);
- unpobj(uball);
- }
- freeobj(uchain);
- unpobj(uchain);
- }
-
- level_tele() {
- register int newlevel;
- if(Teleport_control) {
- char buf[BUFSZ];
-
- do {
- pline("To what level do you want to teleport? [type a number] ");
- getlin(buf);
- } while(!digit(buf[0]) && (buf[0] != '-' || !digit(buf[1])));
- newlevel = atoi(buf);
- } else {
- newlevel = 5 + rn2(20); /* 5 - 24 */
- if(dlevel == newlevel)
- if(!xdnstair) newlevel--; else newlevel++;
- }
- if(newlevel >= 30) {
- if(newlevel > MAXLEVEL) newlevel = MAXLEVEL;
- pline("You arrive at the center of the earth ...");
- pline("Unfortunately it is here that hell is located.");
- if(Fire_resistance) {
- pline("But the fire doesn't seem to harm you.");
- #ifdef DGK
- fflush(stdout);
- #endif DGK
- } else {
- pline("You burn to a crisp.");
- dlevel = maxdlevel = newlevel;
- killer = "visit to the hell";
- done("burned");
- }
- }
- if(newlevel < 0) {
- newlevel = 0;
- pline("You are now high above the clouds ...");
- if(Levitation) {
- pline("You float gently down to earth.");
- done("escaped");
- }
- pline("Unfortunately, you don't know how to fly.");
- pline("You fall down a few thousand feet and break your neck.");
- dlevel = 0;
- killer = "fall";
- done("died");
- }
-
- goto_level(newlevel, FALSE); /* calls done("escaped") if newlevel==0 */
- }
-
- drown()
- {
- pline("You fall into a pool!");
- pline("You can't swim!");
- if(rn2(3) < u.uluck+2) {
- /* most scrolls become unreadable */
- register struct obj *obj;
-
- for(obj = invent; obj; obj = obj->nobj)
- if(obj->olet == SCROLL_SYM && rn2(12) > u.uluck)
- obj->otyp = SCR_BLANK_PAPER;
- /* we should perhaps merge these scrolls ? */
-
- pline("You attempt a teleport spell."); /* utcsri!carroll */
- (void) dotele();
- if(levl[u.ux][u.uy].typ != POOL) return;
- }
- pline("You drown ...");
- killer = "pool of water";
- done("drowned");
- }
-