Abstract away the operations involving a sentinel value for coordinates.
[super-star-trek.git] / src / events.c
index 95a3c44517c1e37650a296e2321a4dec87c1f765..7acb042fa8ba76803a2e57773b68f6fcb51e9a1b 100644 (file)
@@ -93,6 +93,7 @@ void events(void)
 
     radio_was_broken = damaged(DRADIO);
 
+    hold.x = hold.y = 0;
     for (;;) {
        /* Select earliest extraneous event, evcode==0 if no events */
        evcode = FSPY;
@@ -120,7 +121,7 @@ void events(void)
            return;
        }
        /* Is life support adequate? */
-       if (damaged(DLIFSUP) && game.condit != IHDOCKED) {
+       if (damaged(DLIFSUP) && game.condition != docked) {
            if (game.lsupres < xtime && game.damage[DLIFSUP] > game.lsupres) {
                finish(FLIFESUP);
                return;
@@ -130,7 +131,7 @@ void events(void)
        }
        /* Fix devices */
        repair = xtime;
-       if (game.condit == IHDOCKED) repair /= game.docfac;
+       if (game.condition == docked) repair /= game.docfac;
        /* Don't fix Deathray here */
        for (l=0; l<NDEVICES; l++)
            if (game.damage[l] > 0.0 && l != DDRAY)
@@ -140,9 +141,9 @@ void events(void)
            prout(_("Lt. Uhura- \"Captain, the sub-space radio is working and"));
            prout(_("   surveillance reports are coming in."));
            skip(1);
-           if (game.iseenit==0) {
+           if (!game.iseenit) {
                attakreport(false);
-               game.iseenit = 1;
+               game.iseenit = true;
            }
            rechart();
            prout(_("   The star chart is now up to date.\""));
@@ -152,7 +153,7 @@ void events(void)
        game.optime -= xtime;
        switch (evcode) {
        case FSNOVA: /* Supernova */
-           if (!ipage) pause_game(1);
+           if (!ipage) pause_game(true);
            ipage=true;
            snova(false, NULL);
            schedule(FSNOVA, expran(0.5*game.intime));
@@ -161,7 +162,7 @@ void events(void)
        case FSPY: /* Check with spy to see if S.C. should tractor beam */
            if (game.state.nscrem == 0 ||
                ictbeam || istract ||
-               game.condit==IHDOCKED || game.isatb==1 || game.iscate==1) return;
+               game.condition==docked || game.isatb==1 || game.iscate) return;
            if (game.ientesc ||
                (game.energy < 2000 && game.torps < 4 && game.shield < 1250) ||
                (damaged(DPHASER) && (damaged(DPHOTON) || game.torps < 4)) ||
@@ -170,7 +171,7 @@ void events(void)
                 (game.torps < 5 || damaged(DPHOTON)))) {
                /* Tractor-beam her! */
                istract = true;
-               yank = square(game.state.kscmdr.x-game.quadrant.x) + square(game.state.kscmdr.y-game.quadrant.y);
+               yank = distance(game.state.kscmdr, game.quadrant);
                /********* fall through to FTBEAM code ***********/
            }
            else return;
@@ -182,7 +183,7 @@ void events(void)
                }
                i = Rand()*game.state.remcom+1.0;
                yank = square(game.state.kcmdr[i].x-game.quadrant.x) + square(game.state.kcmdr[i].y-game.quadrant.y);
-               if (istract || game.condit == IHDOCKED || yank == 0) {
+               if (istract || game.condition == docked || yank == 0) {
                    /* Drats! Have to reschedule */
                    schedule(FTBEAM, 
                             game.optime + expran(1.5*game.intime/game.state.remcom));
@@ -191,10 +192,10 @@ void events(void)
            }
            /* tractor beaming cases merge here */
            yank = sqrt(yank);
-           if (!ipage) pause_game(1);
+           if (!ipage) pause_game(true);
            ipage=true;
            game.optime = (10.0/(7.5*7.5))*yank; /* 7.5 is yank rate (warp 7.5) */
-           ictbeam = 1;
+           ictbeam = true;
            skip(1);
            proutn("***");
            crmshp();
@@ -207,13 +208,13 @@ void events(void)
                return;
            }
            /* Check to see if shuttle is aboard */
-           if (game.iscraft==0) {
+           if (game.iscraft == offship) {
                skip(1);
                if (Rand() > 0.5) {
                    prout(_("Galileo, left on the planet surface, is captured"));
                    prout(_("by aliens and made into a flying McDonald's."));
                    game.damage[DSHUTTL] = -10;
-                   game.iscraft = -1;
+                   game.iscraft = removed;
                }
                else {
                    prout(_("Galileo, left on the planet surface, is well hidden."));
@@ -223,7 +224,7 @@ void events(void)
                game.quadrant = game.state.kscmdr;
            else
                game.quadrant = game.state.kcmdr[i];
-           iran(QUADSIZE, &game.sector.x, &game.sector.y);
+           game.sector = randplace(QUADSIZE);
            crmshp();
            proutn(_(" is pulled to "));
            proutn(cramlc(quadrant, game.quadrant));
@@ -235,21 +236,21 @@ void events(void)
            }
            if (!game.shldup) {
                if (!damaged(DSHIELD) && game.shield > 0) {
-                   doshield(2); /* Shldsup */
-                   game.shldchg=0;
+                   doshield(true); /* raise shields */
+                   game.shldchg=false;
                }
                else prout(_("(Shields not currently useable.)"));
            }
            newqad(false);
            /* Adjust finish time to time of tractor beaming */
            fintim = game.state.date+game.optime;
-           attack(0);
+           attack(false);
            if (game.state.remcom <= 0) unschedule(FTBEAM);
            else schedule(FTBEAM, game.optime+expran(1.5*game.intime/game.state.remcom));
            break;
        case FSNAP: /* Snapshot of the universe (for time warp) */
            game.snapsht = game.state;
-           game.state.snap = 1;
+           game.state.snap = true;
            schedule(FSNAP, expran(0.5 * game.intime));
            break;
        case FBATTAK: /* Commander attacks starbase */
@@ -282,11 +283,11 @@ void events(void)
            if (game.isatb) /* extra time if SC already attacking */
                postpone(FCDBAS, scheduled(FSCDBAS)-game.state.date);
            game.future[FBATTAK].date = game.future[FCDBAS].date + expran(0.3*game.intime);
-           game.iseenit = 0;
-           if (!damaged(DRADIO) && game.condit != IHDOCKED
+           game.iseenit = false;
+           if (!damaged(DRADIO) && game.condition != docked
                break; /* No warning :-( */
-           game.iseenit = 1;
-           if (!ipage) pause_game(1);
+           game.iseenit = true;
+           if (!ipage) pause_game(true);
            ipage = true;
            skip(1);
            proutn(_("Lt. Uhura-  \"Captain, the starbase in "));
@@ -316,7 +317,7 @@ void events(void)
                if (i > game.state.remcom || game.state.rembase == 0 ||
                    !game.state.galaxy[game.battle.x][game.battle.y].starbase) {
                    /* No action to take after all */
-                   game.battle.x = game.battle.y = 0;
+                   invalidate(game.battle);
                    break;
                }
            }
@@ -332,9 +333,9 @@ void events(void)
                prout(_("Spock-  \"Captain, I believe the starbase has been destroyed.\""));
            }
            else if (game.state.rembase != 1 &&
-                    (!damaged(DRADIO) || game.condit == IHDOCKED)) {
+                    (!damaged(DRADIO) || game.condition == docked)) {
                /* Get word via subspace radio */
-               if (!ipage) pause_game(1);
+               if (!ipage) pause_game(true);
                ipage = true;
                skip(1);
                prout(_("Lt. Uhura-  \"Captain, Starfleet Command reports that"));
@@ -357,14 +358,13 @@ void events(void)
                game.battle = hold;
                game.isatb = 0;
            }
-           else {
-               game.battle.x = game.battle.y = 0;
-           }
+           else
+               invalidate(game.battle);
            break;
        case FSCMOVE: /* Supercommander moves */
            schedule(FSCMOVE, 0.2777);
            if (!game.ientesc && !istract && game.isatb != 1 &&
-                       (game.iscate != 1 || !game.justin)) 
+                       (!game.iscate || !game.justin)) 
                scom(&ipage);
            break;
        case FDSPROB: /* Move deep space probe */
@@ -379,9 +379,9 @@ void events(void)
                if (!VALID_QUADRANT(i, j) ||
                    game.state.galaxy[game.probec.x][game.probec.y].supernova) {
                    // Left galaxy or ran into supernova
-                   if (!damaged(DRADIO) || game.condit == IHDOCKED) {
-                       if (ipage==0) pause_game(1);
-                       ipage = 1;
+                   if (!damaged(DRADIO) || game.condition == docked) {
+                       if (!ipage) pause_game(true);
+                       ipage = true;
                        skip(1);
                        proutn(_("Lt. Uhura-  \"The deep space probe "));
                        if (!VALID_QUADRANT(j, i))
@@ -393,9 +393,9 @@ void events(void)
                    unschedule(FDSPROB);
                    break;
                }
-               if (!damaged(DRADIO) || game.condit == IHDOCKED) {
-                   if (ipage==0) pause_game(1);
-                   ipage = 1;
+               if (!damaged(DRADIO) || game.condition == docked) {
+                   if (!ipage) pause_game(true);
+                   ipage = true;
                    skip(1);
                    proutn(_("Lt. Uhura-  \"The deep space probe is now in "));
                    proutn(cramlc(quadrant, game.probec));
@@ -405,7 +405,7 @@ void events(void)
            pdest = &game.state.galaxy[game.probec.x][game.probec.y];
            /* Update star chart if Radio is working or have access to
               radio. */
-           if (!damaged(DRADIO) || game.condit == IHDOCKED) {
+           if (!damaged(DRADIO) || game.condition == docked) {
                struct page *chp = &game.state.chart[game.probec.x][game.probec.y];
 
                chp->klingons = pdest->klingons;
@@ -431,7 +431,7 @@ void events(void)
                   which has some stars which are inhabited and
                   not already under attack, which is not
                   supernova'ed, and which has some Klingons in it */
-               iran(GALSIZE, &w.x, &w.y);
+               w = randplace(GALSIZE);
                q = &game.state.galaxy[w.x][w.y];
            } while (--i &&
                     (same(game.quadrant, w) || q->planet == NOPLANET ||
@@ -449,10 +449,10 @@ void events(void)
            q->status = distressed;
 
            /* tell the captain about it if we can */
-           if (!damaged(DRADIO) || game.condit == IHDOCKED)
+           if (!damaged(DRADIO) || game.condition == docked)
            {
                prout("Uhura- Captain, %s in %s reports it is under attack",
-                     systemname(q->planet), cramlc(quadrant, w));
+                     systnames[q->planet], cramlc(quadrant, w));
                prout("by a Klingon invasion fleet.");
                if (cancelrest())
                    return;
@@ -473,10 +473,10 @@ void events(void)
            ev2->quadrant = ev->quadrant;
 
            /* report the disaster if we can */
-           if (!damaged(DRADIO) || game.condit == IHDOCKED)
+           if (!damaged(DRADIO) || game.condition == docked)
            {
                prout("Uhura- We've lost contact with starsystem %s",
-                     systemname(q->planet));
+                     systnames[q->planet]);
                prout("in %s.\n", cramlc(quadrant, ev->quadrant));
            }
            break;
@@ -521,20 +521,20 @@ void events(void)
            game.state.remkl++;
            q->klingons++;
            if (same(game.quadrant, w))
-               newkling(++game.klhere, &hold);
+               newkling(++game.klhere);
 
            /* recompute time left */
            game.state.remtime = game.state.remres/(game.state.remkl+4*game.state.remcom);
            /* report the disaster if we can */
-           if (!damaged(DRADIO) || game.condit == IHDOCKED)
+           if (!damaged(DRADIO) || game.condition == docked)
            {
                if (same(game.quadrant, w)) {
                    prout("Spock- sensors indicate the Klingons have");
-                   prout("launched a warship from %s.",systemname(q->planet));
+                   prout("launched a warship from %s.", systnames[q->planet]);
                } else {
                    prout("Uhura- Starfleet reports increased Klingon activity");
                    if (q->planet != NOPLANET)
-                       proutn("near %s", systemname(q->planet));
+                       proutn("near %s", systnames[q->planet]);
                    prout("in %s.\n", cramlc(quadrant, w));
                }
            }
@@ -584,14 +584,14 @@ void wait(void)
            if (rtime < temp) temp = rtime;
            game.optime = temp;
        }
-       if (game.optime < delay) attack(0);
+       if (game.optime < delay) attack(false);
        if (game.alldone) return;
        events();
        game.ididit = true;
        if (game.alldone) return;
        delay -= temp;
        /* Repair Deathray if long rest at starbase */
-       if (origTime-delay >= 9.99 && game.condit == IHDOCKED)
+       if (origTime-delay >= 9.99 && game.condition == docked)
            game.damage[DDRAY] = 0.0;
     } while 
        // leave if quadrant supernovas
@@ -601,6 +601,14 @@ void wait(void)
     game.optime = 0;
 }
 
+/*
+ *     A nova occurs.  It is the result of having a star hit with a
+ *     photon torpedo, or possibly of a probe warhead going off.
+ *     Stars that go nova cause stars which surround them to undergo
+ *     the same probabilistic process.  Klingons next to them are
+ *     destroyed.  And if the starship is next to it, it gets zapped.
+ *     If the zap is too much, it gets destroyed.
+ */
 void nova(coord nov) 
 /* star goes nova */
 {
@@ -667,8 +675,9 @@ void nova(coord nov)
                        crmena(true, IHP, sector, scratch);
                        prout(_(" destroyed."));
                        DESTROY(&game.state.plnets[game.iplnet]);
-                       game.iplnet = game.plnet.x = game.plnet.y = 0;
-                       if (game.landed == 1) {
+                       game.iplnet = 0;
+                       invalidate(game.plnet);
+                       if (game.landed) {
                            finish(FPNOVA);
                            return;
                        }
@@ -681,7 +690,7 @@ void nova(coord nov)
                                break;
                        game.state.baseq[i] = game.state.baseq[game.state.rembase];
                        game.state.rembase--;
-                       game.base.x = game.base.y = 0;
+                       invalidate(game.base);
                        game.state.basekl++;
                        newcnd();
                        crmena(true, IHB, sector, scratch);
@@ -713,7 +722,7 @@ void nova(coord nov)
                        kount++;
                        break;
                    case IHK: /* kill klingon */
-                       deadkl(scratch,iquad, scratch.x, scratch.y);
+                       deadkl(scratch,iquad, scratch);
                        break;
                    case IHC: /* Damage/destroy big enemies */
                    case IHS:
@@ -722,7 +731,7 @@ void nova(coord nov)
                            if (same(game.ks[ll], scratch)) break;
                        game.kpower[ll] -= 800.0; /* If firepower is lost, die */
                        if (game.kpower[ll] <= 0.0) {
-                           deadkl(scratch, iquad, scratch.x, scratch.y);
+                           deadkl(scratch, iquad, scratch);
                            break;
                        }
                        newc.x = scratch.x + scratch.x - hits[mm][1];
@@ -739,7 +748,7 @@ void nova(coord nov)
                            proutn(_(", blasted into "));
                            crmena(false, IHBLANK, sector, newc);
                            skip(1);
-                           deadkl(scratch, iquad, newc.x, newc.y);
+                           deadkl(scratch, iquad, newc);
                            break;
                        }
                        if (iquad1 != IHDOT) {
@@ -752,8 +761,7 @@ void nova(coord nov)
                        game.quad[scratch.x][scratch.y] = IHDOT;
                        game.quad[newc.x][newc.y] = iquad;
                        game.ks[ll] = newc;
-                       game.kavgd[ll] = sqrt(square(game.sector.x-newc.x)+square(game.sector.y-newc.y));
-                       game.kdist[ll] = game.kavgd[ll];
+                       game.kdist[ll] = game.kavgd[ll] = distance(game.sector, newc);
                        skip(1);
                        break;
                    }
@@ -776,8 +784,7 @@ void nova(coord nov)
     game.optime = 10.0*game.dist/16.0;
     skip(1);
     prout(_("Force of nova displaces starship."));
-    game.iattak=2;     /* Eliminates recursion problem */
-    imove();
+    imove(true);
     game.optime = 10.0*game.dist/16.0;
     return;
 }
@@ -819,7 +826,7 @@ void snova(bool induced, coord *w)
 
     if (!same(nq, game.quadrant) || game.justin) {
        /* it isn't here, or we just entered (treat as enroute) */
-       if (!damaged(DRADIO) || game.condit == IHDOCKED) {
+       if (!damaged(DRADIO) || game.condition == docked) {
            skip(1);
            prout(_("Message from Starfleet Command       Stardate %.2f"), game.state.date);
            prout(_("     Supernova in %s; caution advised."),
@@ -849,7 +856,7 @@ void snova(bool induced, coord *w)
            prouts("***************");
            skip(1);
            stars();
-           game.alldone=1;
+           game.alldone = true;
        }
     }
 
@@ -858,7 +865,8 @@ void snova(bool induced, coord *w)
     game.state.galaxy[nq.x][nq.y].klingons = 0;
     if (same(nq, game.state.kscmdr)) {
        /* did in the Supercommander! */
-       game.state.nscrem = game.state.kscmdr.x = game.state.kscmdr.y = game.isatb = game.iscate = 0;
+       game.state.nscrem = game.state.kscmdr.x = game.state.kscmdr.y = game.isatb =  0;
+       game.iscate = false;
        unschedule(FSCMOVE);
        unschedule(FSCDBAS);
     }
@@ -867,7 +875,7 @@ void snova(bool induced, coord *w)
        for (l = 1; l <= maxloop; l++) {
            if (same(game.state.kcmdr[l], nq)) {
                game.state.kcmdr[l] = game.state.kcmdr[game.state.remcom];
-               game.state.kcmdr[game.state.remcom].x = game.state.kcmdr[game.state.remcom].y = 0;
+               invalidate(game.state.kcmdr[game.state.remcom]);
                game.state.remcom--;
                kldead--;
                if (game.state.remcom==0) unschedule(FTBEAM);
@@ -894,7 +902,7 @@ void snova(bool induced, coord *w)
        for (loop = 1; loop <= maxloop; loop++)
            if (same(game.state.baseq[loop], nq)) {
                game.state.baseq[loop] = game.state.baseq[game.state.rembase];
-               game.state.baseq[game.state.rembase].x = game.state.baseq[game.state.rembase].y = 0;
+               invalidate(game.state.baseq[game.state.rembase]);
                game.state.rembase--;
                break;
            }
@@ -906,7 +914,7 @@ void snova(bool induced, coord *w)
        game.state.nplankl += npdead;
     }
     /* mark supernova in galaxy and in star chart */
-    if (same(game.quadrant, nq) || !damaged(DRADIO) || game.condit == IHDOCKED)
+    if (same(game.quadrant, nq) || !damaged(DRADIO) || game.condition == docked)
        game.state.galaxy[nq.x][nq.y].supernova = true;
     /* If supernova destroys last Klingons give special message */
     if (KLINGREM==0 && !same(nq, game.quadrant)) {