Clean up nasty FORTRAN-style if statements.
[super-star-trek.git] / src / events.c
index 7fdf27157544123fc86abd57e31ab597d2e4f206..3a93a84cf0320c7c85d062e79e80624efb959084 100644 (file)
@@ -42,11 +42,12 @@ void postpone(int evtype, double offset)
 }
 
 static bool cancelrest(void)
+/* rest period is interrupted by event */
 {
     if (game.resting) {
        skip(1);
        proutn(_("Mr. Spock-  \"Captain, shall we cancel the rest period?\""));
-       if (ja()) {
+       if (ja() == true) {
            game.resting = false;
            game.optime = 0.0;
            return true;
@@ -57,10 +58,11 @@ static bool cancelrest(void)
 }
 
 void events(void) 
+/* run through the event queue looking for things to do */
 {
-    int istract=0, evcode, i=0, j, k, l;
+    int evcode, i=0, j, k, l;
     double fintim = game.state.date + game.optime, datemin, xtime, repair, yank=0;
-    bool radio_was_broken, ictbeam = false, ipage = false;
+    bool radio_was_broken, ictbeam = false, ipage = false, istract = false;
     struct quadrant *pdest, *q;
     coord w, hold;
     event *ev, *ev2;
@@ -89,12 +91,14 @@ void events(void)
        }
     }
 
-    radio_was_broken = (game.damage[DRADIO] != 0.0);
+    radio_was_broken = damaged(DRADIO);
 
+    hold.x = hold.y = 0;
     for (;;) {
        /* Select earliest extraneous event, evcode==0 if no events */
        evcode = FSPY;
-       if (game.alldone) return;
+       if (game.alldone)
+           return;
        datemin = fintim;
        for (l = 1; l < NEVENTS; l++)
            if (game.future[l].date < datemin) {
@@ -112,30 +116,37 @@ void events(void)
            finish(FDEPLETE);
            return;
        }
+       /* Any crew left alive? */
+       if (game.state.crew <=0) {
+           finish(FCREW);
+           return;
+       }
        /* Is life support adequate? */
-       if (game.damage[DLIFSUP] && game.condit != IHDOCKED) {
+       if (damaged(DLIFSUP) && game.condition != docked) {
            if (game.lsupres < xtime && game.damage[DLIFSUP] > game.lsupres) {
                finish(FLIFESUP);
                return;
            }
            game.lsupres -= xtime;
-           if (game.damage[DLIFSUP] <= xtime) game.lsupres = game.inlsr;
+           if (game.damage[DLIFSUP] <= xtime)
+               game.lsupres = game.inlsr;
        }
        /* 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)
                game.damage[l] -= (game.damage[l]-repair > 0.0 ? repair : game.damage[l]);
        /* If radio repaired, update star chart and attack reports */
-       if (radio_was_broken && game.damage[DRADIO] == 0.0) {
+       if (radio_was_broken && !damaged(DRADIO)) {
            prout(_("Lt. Uhura- \"Captain, the sub-space radio is working and"));
            prout(_("   surveillance reports are coming in."));
            skip(1);
-           if (game.iseenit==0) {
-               attakreport(0);
-               game.iseenit = 1;
+           if (!game.iseenit) {
+               attakreport(false);
+               game.iseenit = true;
            }
            rechart();
            prout(_("   The star chart is now up to date.\""));
@@ -145,28 +156,31 @@ void events(void)
        game.optime -= xtime;
        switch (evcode) {
        case FSNOVA: /* Supernova */
-           if (!ipage) pause_game(1);
+           if (!ipage)
+               pause_game(true);
            ipage=true;
-           snova(0,0);
+           snova(false, NULL);
            schedule(FSNOVA, expran(0.5*game.intime));
-           if (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova) return;
+           if (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova)
+               return;
            break;
        case FSPY: /* Check with spy to see if S.C. should tractor beam */
            if (game.state.nscrem == 0 ||
-               ictbeam+istract > 0 ||
-               game.condit==IHDOCKED || game.isatb==1 || game.iscate==1) return;
+               ictbeam || istract ||
+               game.condition==docked || game.isatb==1 || game.iscate) return;
            if (game.ientesc ||
                (game.energy < 2000 && game.torps < 4 && game.shield < 1250) ||
-               (game.damage[DPHASER]>0 && (game.damage[DPHOTON]>0 || game.torps < 4)) ||
-               (game.damage[DSHIELD] > 0 &&
-                (game.energy < 2500 || game.damage[DPHASER] > 0) &&
-                (game.torps < 5 || game.damage[DPHOTON] > 0))) {
+               (damaged(DPHASER) && (damaged(DPHOTON) || game.torps < 4)) ||
+               (damaged(DSHIELD) &&
+                (game.energy < 2500 || damaged(DPHASER)) &&
+                (game.torps < 5 || damaged(DPHOTON)))) {
                /* Tractor-beam her! */
-               istract=1;
-               yank = square(game.state.kscmdr.x-game.quadrant.x) + square(game.state.kscmdr.y-game.quadrant.y);
+               istract = true;
+               yank = distance(game.state.kscmdr, game.quadrant);
                /********* fall through to FTBEAM code ***********/
            }
-           else return;
+           else
+               return;
        case FTBEAM: /* Tractor beam */
            if (evcode==FTBEAM) {
                if (game.state.remcom == 0) {
@@ -175,7 +189,7 @@ 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));
@@ -184,29 +198,31 @@ 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();
            prout(_(" caught in long range tractor beam--"));
            /* If Kirk & Co. screwing around on planet, handle */
-           atover(1); /* atover(1) is Grab */
-           if (game.alldone) return;
-           if (game.icraft == 1) { /* Caught in Galileo? */
+           atover(true); /* atover(true) is Grab */
+           if (game.alldone)
+               return;
+           if (game.icraft) { /* Caught in Galileo? */
                finish(FSTRACTOR);
                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."));
@@ -216,7 +232,7 @@ 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));
@@ -227,22 +243,25 @@ void events(void)
                game.resting = false;
            }
            if (!game.shldup) {
-               if (game.damage[DSHIELD]==0 && game.shield > 0) {
-                   doshield(2); /* Shldsup */
-                   game.shldchg=0;
+               if (!damaged(DSHIELD) && game.shield > 0) {
+                   doshield(true); /* raise shields */
+                   game.shldchg=false;
                }
-               else prout(_("(Shields not currently useable.)"));
+               else
+                   prout(_("(Shields not currently useable.)"));
            }
-           newqad(0);
+           newqad(false);
            /* Adjust finish time to time of tractor beaming */
            fintim = game.state.date+game.optime;
-           attack(0);
-           if (game.state.remcom <= 0) unschedule(FTBEAM);
-           else schedule(FTBEAM, game.optime+expran(1.5*game.intime/game.state.remcom));
+           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 */
@@ -261,7 +280,8 @@ void events(void)
                        i = 1;
                        break;
                    }
-               if (i == 1) break;
+               if (i == 1)
+                   break;
            }
            if (j>game.state.rembase) {
                /* no match found -- try later */
@@ -275,11 +295,12 @@ 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 (game.damage[DRADIO] != 0.0 && 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 "));
@@ -309,7 +330,7 @@ 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;
                }
            }
@@ -325,9 +346,10 @@ void events(void)
                prout(_("Spock-  \"Captain, I believe the starbase has been destroyed.\""));
            }
            else if (game.state.rembase != 1 &&
-                    (game.damage[DRADIO] <= 0.0 || 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"));
@@ -336,7 +358,8 @@ void events(void)
                prout(_(" has been destroyed by"));
                if (game.isatb == 2) 
                    prout(_("the Klingon Super-Commander"));
-               else prout(_("a Klingon Commander"));
+               else
+                   prout(_("a Klingon Commander"));
                game.state.chart[game.battle.x][game.battle.y].starbase = false;
            }
            /* Remove Starbase from galaxy */
@@ -350,15 +373,14 @@ 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==0 &&
-               game.isatb != 1 &&
-               (game.iscate != 1 || !game.justin)) scom(&ipage);
+           if (!game.ientesc && !istract && game.isatb != 1 &&
+                       (!game.iscate || !game.justin)) 
+               scom(&ipage);
            break;
        case FDSPROB: /* Move deep space probe */
            schedule(FDSPROB, 0.01);
@@ -372,9 +394,10 @@ 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 (game.damage[DRADIO]==0.0 || 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))
@@ -386,9 +409,10 @@ void events(void)
                    unschedule(FDSPROB);
                    break;
                }
-               if (game.damage[DRADIO]==0.0   || 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));
@@ -398,7 +422,7 @@ 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 (game.damage[DRADIO] == 0.0 || 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;
@@ -409,7 +433,7 @@ void events(void)
            game.proben--; // One less to travel
            if (game.proben == 0 && game.isarmed && pdest->stars) {
                /* lets blow the sucker! */
-               snova(1,0);
+               snova(true, &game.probec);
                unschedule(FDSPROB);
                if (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova) 
                    return;
@@ -424,7 +448,7 @@ 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 ||
@@ -442,10 +466,10 @@ void events(void)
            q->status = distressed;
 
            /* tell the captain about it if we can */
-           if (game.damage[DRADIO] == 0.0 || 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;
@@ -466,10 +490,10 @@ void events(void)
            ev2->quadrant = ev->quadrant;
 
            /* report the disaster if we can */
-           if (game.damage[DRADIO] == 0.0 || 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;
@@ -514,20 +538,20 @@ 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 (game.damage[DRADIO] == 0.0 || 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));
                }
            }
@@ -538,14 +562,16 @@ void events(void)
 
                                
 void wait(void) 
+/* wait on events */
 {
     int key;
     double temp, delay, origTime;
 
-    game.ididit = 0;
+    game.ididit = false;
     for (;;) {
        key = scan();
-       if (key  != IHEOL) break;
+       if (key  != IHEOL)
+           break;
        proutn(_("How long? "));
     }
     chew();
@@ -554,17 +580,20 @@ void wait(void)
        return;
     }
     origTime = delay = aaitem;
-    if (delay <= 0.0) return;
+    if (delay <= 0.0)
+       return;
     if (delay >= game.state.remtime || game.nenhere != 0) {
        proutn(_("Are you sure? "));
-       if (ja() == 0) return;
+       if (ja() == false)
+           return;
     }
 
     /* Alternate resting periods (events) with attacks */
 
     game.resting = true;
     do {
-       if (delay <= 0) game.resting = false;
+       if (delay <= 0)
+           game.resting = false;
        if (!game.resting) {
            prout(_("%d stardates left."), (int)game.state.remtime);
            return;
@@ -573,17 +602,21 @@ void wait(void)
 
        if (game.nenhere) {
            double rtime = 1.0 + Rand();
-           if (rtime < temp) temp = rtime;
+           if (rtime < temp)
+               temp = rtime;
            game.optime = temp;
        }
-       if (game.optime < delay) attack(0);
-       if (game.alldone) return;
+       if (game.optime < delay)
+           attack(false);
+       if (game.alldone)
+           return;
        events();
-       game.ididit = 1;
-       if (game.alldone) return;
+       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
@@ -593,24 +626,32 @@ void wait(void)
     game.optime = 0;
 }
 
-void nova(int ix, int iy) 
+/*
+ *     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 */
 {
     static double course[] =
        {0.0, 10.5, 12.0, 1.5, 9.0, 0.0, 3.0, 7.5, 6.0, 4.5};
     int bot, top, top2, hits[QUADSIZE+1][3], kount, icx, icy, mm, nn, j;
     int iquad, iquad1, i, ll;
-    coord newc, nov, scratch;
+    coord newc, scratch;
 
-    nov.x = ix; nov.y = iy;
     if (Rand() < 0.05) {
        /* Wow! We've supernova'ed */
-       snova(ix, iy);
+       snova(false, &nov);
        return;
     }
 
     /* handle initial nova */
-    game.quad[ix][iy] = IHDOT;
-    crmena(1, IHSTAR, 2, nov);
+    game.quad[nov.x][nov.y] = IHDOT;
+    crmena(false, IHSTAR, sector, nov);
     prout(_(" novas."));
     game.state.galaxy[game.quadrant.x][game.quadrant.y].stars--;
     game.state.starkl++;
@@ -619,16 +660,18 @@ void nova(int ix, int iy)
     bot = top = top2 = 1;
     kount = 0;
     icx = icy = 0;
-    hits[1][1] = ix;
-    hits[1][2] = iy;
+    hits[1][1] = nov.x;
+    hits[1][2] = nov.y;
     while (1) {
        for (mm = bot; mm <= top; mm++) 
            for (nn = 1; nn <= 3; nn++)  /* nn,j represents coordinates around current */
                for (j = 1; j <= 3; j++) {
-                   if (j==2 && nn== 2) continue;
+                   if (j==2 && nn== 2)
+                       continue;
                    scratch.x = hits[mm][1]+nn-2;
                    scratch.y = hits[mm][2]+j-2;
-                   if (!VALID_SECTOR(scratch.y, scratch.x)) continue;
+                   if (!VALID_SECTOR(scratch.y, scratch.x))
+                       continue;
                    iquad = game.quad[scratch.x][scratch.y];
                    switch (iquad) {
                    // case IHDOT:      /* Empty space ends reaction
@@ -641,7 +684,7 @@ void nova(int ix, int iy)
                    case IHSTAR: /* Affect another star */
                        if (Rand() < 0.05) {
                            /* This star supernovas */
-                           snova(scratch.x,scratch.y);
+                           snova(false, &scratch);
                            return;
                        }
                        top2++;
@@ -649,18 +692,19 @@ void nova(int ix, int iy)
                        hits[top2][2]=scratch.y;
                        game.state.galaxy[game.quadrant.x][game.quadrant.y].stars -= 1;
                        game.state.starkl++;
-                       crmena(1, IHSTAR, 2, scratch);
+                       crmena(true, IHSTAR, sector, scratch);
                        prout(_(" novas."));
                        game.quad[scratch.x][scratch.y] = IHDOT;
                        break;
                    case IHP: /* Destroy planet */
                        game.state.galaxy[game.quadrant.x][game.quadrant.y].planet = NOPLANET;
                        game.state.nplankl++;
-                       crmena(1, IHP, 2, scratch);
+                       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;
                        }
@@ -669,14 +713,14 @@ void nova(int ix, int iy)
                    case IHB: /* Destroy base */
                        game.state.galaxy[game.quadrant.x][game.quadrant.y].starbase = false;
                        for_starbases(i)
-                           if (game.state.baseq[i].x==game.quadrant.x && game.state.baseq[i].y==game.quadrant.y
+                           if (same(game.state.baseq[i], game.quadrant)
                                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(1, IHB, 2, scratch);
+                       crmena(true, IHB, sector, scratch);
                        prout(_(" destroyed."));
                        game.quad[scratch.x][scratch.y] = IHDOT;
                        break;
@@ -684,7 +728,8 @@ void nova(int ix, int iy)
                    case IHF:
                        prout(_("***Starship buffeted by nova."));
                        if (game.shldup) {
-                           if (game.shield >= 2000.0) game.shield -= 2000.0;
+                           if (game.shield >= 2000.0)
+                               game.shield -= 2000.0;
                            else {
                                double diff = 2000.0 - game.shield;
                                game.energy -= diff;
@@ -694,7 +739,8 @@ void nova(int ix, int iy)
                                game.damage[DSHIELD] += 0.005*game.damfac*Rand()*diff;
                            }
                        }
-                       else game.energy -= 2000.0;
+                       else
+                           game.energy -= 2000.0;
                        if (game.energy <= 0) {
                            finish(FNOVA);
                            return;
@@ -705,21 +751,22 @@ void nova(int ix, int iy)
                        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:
                    case IHR:
                        for_local_enemies(ll)
-                           if (game.ks[ll].x==scratch.x && game.ks[ll].y==scratch.y) break;
+                           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];
                        newc.y = scratch.y + scratch.y - hits[mm][2];
-                       crmena(1, iquad, 2, scratch);
+                       crmena(true, iquad, sector, scratch);
                        proutn(_(" damaged"));
                        if (!VALID_SECTOR(newc.x, newc.y)) {
                            /* can't leave quadrant */
@@ -729,9 +776,9 @@ void nova(int ix, int iy)
                        iquad1 = game.quad[newc.x][newc.y];
                        if (iquad1 == IHBLANK) {
                            proutn(_(", blasted into "));
-                           crmena(0, IHBLANK, 2, newc);
+                           crmena(false, IHBLANK, sector, newc);
                            skip(1);
-                           deadkl(scratch, iquad, newc.x, newc.y);
+                           deadkl(scratch, iquad, newc);
                            break;
                        }
                        if (iquad1 != IHDOT) {
@@ -743,10 +790,8 @@ void nova(int ix, int iy)
                        proutn(cramlc(sector, newc));
                        game.quad[scratch.x][scratch.y] = IHDOT;
                        game.quad[newc.x][newc.y] = iquad;
-                       game.ks[ll].x = newc.x;
-                       game.ks[ll].y = newc.y;
-                       game.kavgd[ll] = sqrt(square(game.sector.x-newc.x)+square(game.sector.y-newc.y));
-                       game.kdist[ll] = game.kavgd[ll];
+                       game.ks[ll] = newc;
+                       game.kdist[ll] = game.kavgd[ll] = distance(game.sector, newc);
                        skip(1);
                        break;
                    }
@@ -761,116 +806,105 @@ void nova(int ix, int iy)
 
     /* Starship affected by nova -- kick it away. */
     game.dist = kount*0.1;
-    if (icx) icx = (icx < 0 ? -1 : 1);
-    if (icy) icy = (icy < 0 ? -1 : 1);
+    if (icx)
+       icx = (icx < 0 ? -1 : 1);
+    if (icy)
+       icy = (icy < 0 ? -1 : 1);
     game.direc = course[3*(icx+1)+icy+2];
-    if (game.direc == 0.0) game.dist = 0.0;
-    if (game.dist == 0.0) return;
+    if (game.direc == 0.0)
+       game.dist = 0.0;
+    if (game.dist == 0.0)
+       return;
     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;
 }
        
        
-void snova(int insx, int insy) 
+void snova(bool induced, coord *w) 
+/* star goes supernova */
 {
-    int comdead, nsx, nsy, num=0, kldead, iscdead;
-    int nrmdead, npdead;
-    int incipient=0;
+    int num = 0, nrmdead, npdead, kldead;
     coord nq;
 
-    nq.x = nq.y = 0;
-    nsx = insy;
-    nsy = insy;
-
-    if (insy== 0) {
-       if (insx == 1)
-           /* NOVAMAX being used */
-           nq = game.probec;
-       else {
-           int stars = 0;
-           /* Scheduled supernova -- select star */
-           /* logic changed here so that we won't favor quadrants in top
-              left of universe */
-           for_quadrants(nq.x) {
-               for_quadrants(nq.y) {
-                   stars += game.state.galaxy[nq.x][nq.y].stars;
-               }
-           }
-           if (stars == 0) return; /* nothing to supernova exists */
-           num = Rand()*stars + 1;
-           for_quadrants(nq.x) {
-               for_quadrants(nq.y) {
-                   num -= game.state.galaxy[nq.x][nq.y].stars;
-                   if (num <= 0) break;
-               }
-               if (num <=0) break;
+    if (w != NULL) 
+       nq = *w;
+    else {
+       int stars = 0;
+       /* Scheduled supernova -- select star */
+       /* logic changed here so that we won't favor quadrants in top
+          left of universe */
+       for_quadrants(nq.x) {
+           for_quadrants(nq.y) {
+               stars += game.state.galaxy[nq.x][nq.y].stars;
            }
-           if (idebug) {
-               proutn("=== Super nova here?");
-               if (ja()==1) {
-                   nq.x = game.quadrant.x;
-                   nq.y = game.quadrant.y;
-               }
+       }
+       if (stars == 0) return; /* nothing to supernova exists */
+       num = Rand()*stars + 1;
+       for_quadrants(nq.x) {
+           for_quadrants(nq.y) {
+               num -= game.state.galaxy[nq.x][nq.y].stars;
+               if (num <= 0)
+                   break;
            }
+           if (num <=0)
+               break;
        }
+       if (idebug) {
+           proutn("=== Super nova here?");
+           if (ja() == true)
+               nq = game.quadrant;
+       }
+    }
 
-       if (nq.x != game.quadrant.y || nq.y != game.quadrant.y || game.justin != 0) {
-           /* it isn't here, or we just entered (treat as inroute) */
-           if (game.damage[DRADIO] == 0.0 || game.condit == IHDOCKED) {
-               skip(1);
-               prout(_("Message from Starfleet Command       Stardate %.2f"), game.state.date);
-               prout(_("     Supernova in %s; caution advised."),
-                     cramlc(quadrant, nq));
-           }
+    if (!same(nq, game.quadrant) || game.justin) {
+       /* it isn't here, or we just entered (treat as enroute) */
+       if (!damaged(DRADIO) || game.condition == docked) {
+           skip(1);
+           prout(_("Message from Starfleet Command       Stardate %.2f"), game.state.date);
+           prout(_("     Supernova in %s; caution advised."),
+                 cramlc(quadrant, nq));
        }
-       else {
-           /* we are in the quadrant! */
-           incipient = 1;
-           num = Rand()* game.state.galaxy[nq.x][nq.y].stars + 1;
-           for_sectors(nsx) {
-               for_sectors(nsy) {
-                   if (game.quad[nsx][nsy]==IHSTAR) {
-                       num--;
-                       if (num==0) break;
-                   }
+    }
+    else {
+       coord ns;
+       /* we are in the quadrant! */
+       num = Rand()* game.state.galaxy[nq.x][nq.y].stars + 1;
+       for_sectors(ns.x) {
+           for_sectors(ns.y) {
+               if (game.quad[ns.x][ns.y]==IHSTAR) {
+                   num--;
+                   if (num==0)
+                       break;
                }
-               if (num==0) break;
            }
+           if (num==0)
+               break;
        }
-    }
-    else {
-       incipient = 1;
-    }
 
-    if (incipient) {
-       coord nd;
        skip(1);
        prouts(_("***RED ALERT!  RED ALERT!"));
        skip(1);
-       nd.x = nsx; nd.y = nsy;
-       prout(_("***Incipient supernova detected at "), cramlc(sector, nd));
-       nq = game.quadrant;
-       if (square(nsx-game.sector.x) + square(nsy-game.sector.y) <= 2.1) {
+       prout(_("***Incipient supernova detected at %s"), cramlc(sector, ns));
+       if (square(ns.x-game.sector.x) + square(ns.y-game.sector.y) <= 2.1) {
            proutn(_("Emergency override attempts t"));
            prouts("***************");
            skip(1);
            stars();
-           game.alldone=1;
+           game.alldone = true;
        }
     }
+
     /* destroy any Klingons in supernovaed quadrant */
     kldead = game.state.galaxy[nq.x][nq.y].klingons;
     game.state.galaxy[nq.x][nq.y].klingons = 0;
-    comdead = iscdead = 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;
-       iscdead = 1;
+       game.state.nscrem = game.state.kscmdr.x = game.state.kscmdr.y = game.isatb =  0;
+       game.iscate = false;
        unschedule(FSCMOVE);
        unschedule(FSCDBAS);
     }
@@ -879,11 +913,11 @@ void snova(int insx, int insy)
        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--;
-               comdead++;
-               if (game.state.remcom==0) unschedule(FTBEAM);
+               if (game.state.remcom==0)
+                   unschedule(FTBEAM);
                break;
            }
        }
@@ -895,44 +929,44 @@ void snova(int insx, int insy)
     game.state.nromrem -= nrmdead;
     npdead = num - nrmdead*10;
     if (npdead) {
-       int l;
-       for (l = 0; l < game.inplan; l++)
-           if (same(game.state.plnets[l].w, nq)) {
-               DESTROY(&game.state.plnets[l]);
+       int loop;
+       for (loop = 0; loop < game.inplan; loop++)
+           if (same(game.state.plnets[loop].w, nq)) {
+               DESTROY(&game.state.plnets[loop]);
            }
     }
     /* Destroy any base in supernovaed quadrant */
     if (game.state.rembase) {
-       int maxloop = game.state.rembase, l;
-       for (l = 1; l <= maxloop; l++)
-           if (same(game.state.baseq[l], nq)) {
-               game.state.baseq[l] = game.state.baseq[game.state.rembase];
-               game.state.baseq[game.state.rembase].x = game.state.baseq[game.state.rembase].y = 0;
+       int maxloop = game.state.rembase, loop;
+       for (loop = 1; loop <= maxloop; loop++)
+           if (same(game.state.baseq[loop], nq)) {
+               game.state.baseq[loop] = game.state.baseq[game.state.rembase];
+               invalidate(game.state.baseq[game.state.rembase]);
                game.state.rembase--;
                break;
            }
     }
     /* If starship caused supernova, tally up destruction */
-    if (insx) {
+    if (induced) {
        game.state.starkl += game.state.galaxy[nq.x][nq.y].stars;
        game.state.basekl += game.state.galaxy[nq.x][nq.y].starbase;
        game.state.nplankl += npdead;
     }
     /* mark supernova in galaxy and in star chart */
-    if (same(game.quadrant, nq) || game.damage[DRADIO] == 0 || 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 && (nq.x != game.quadrant.x || nq.y != game.quadrant.y)) {
+    if (KLINGREM==0 && !same(nq, game.quadrant)) {
        skip(2);
-       if (insx == 0) prout(_("Lucky you!"));
+       if (!induced)
+           prout(_("Lucky you!"));
        proutn(_("A supernova in %s has just destroyed the last Klingons."),
               cramlc(quadrant, nq));
        finish(FWON);
        return;
     }
     /* if some Klingons remain, continue or die in supernova */
-    if (game.alldone) finish(FSNOVAED);
+    if (game.alldone)
+       finish(FSNOVAED);
     return;
 }
-               
-