More magic-number chasing.
[super-star-trek.git] / ai.c
diff --git a/ai.c b/ai.c
index 6b173b5eb1ca3c8752010ba4ea1cefbf76f19398..0fe92c8ff8b1c1282b1065db1ed4819162d102af 100644 (file)
--- a/ai.c
+++ b/ai.c
-#include "sst.h"\r
-\r
-static int tryexit(int lookx, int looky, int ienm, int loccom, int irun) {\r
-       int iqx, iqy, l;\r
-\r
-       iqx = quadx+(lookx+9)/10 - 1;\r
-       iqy = quady+(looky+9)/10 - 1;\r
-       if (iqx < 1 || iqx > 8 || iqy < 1 || iqy > 8 ||\r
-               state.galaxy[iqx][iqy] > 899)\r
-               return 0; /* no can do -- neg energy, supernovae, or >8 Klingons */\r
-       if (ienm == IHR) return 0; /* Romulans cannot escape! */\r
-       if (irun == 0) {\r
-               /* avoid intruding on another commander's territory */\r
-               if (ienm == IHC) {\r
-                       for (l = 1; l <= state.remcom; l++)\r
-                               if (state.cx[l]==iqx && state.cy[l]==iqy) return 0;\r
-                       /* refuse to leave if currently attacking starbase */\r
-                       if (batx==quadx && baty==quady) return 0;\r
-               }\r
-               /* don't leave if over 1000 units of energy */\r
-               if (kpower[loccom] > 1000.) return 0;\r
-       }\r
-       /* print escape message and move out of quadrant.\r
-          We know this if either short or long range sensors are working */\r
-       if (damage[DSRSENS] == 0.0 || damage[DLRSENS] == 0.0 ||\r
-               condit == IHDOCKED) {\r
-               proutn("***");\r
-               cramen(ienm);\r
-               proutn(" escapes to");\r
-               cramlc(1, iqx, iqy);\r
-               prout(" (and regains strength).");\r
-       }\r
-       /* handle local matters related to escape */\r
-       kx[loccom] = kx[nenhere];\r
-       ky[loccom] = ky[nenhere];\r
-       kavgd[loccom] = kavgd[nenhere];\r
-       kpower[loccom] = kpower[nenhere];\r
-       kdist[loccom] = kdist[nenhere];\r
-       klhere--;\r
-       nenhere--;\r
-       if (condit != IHDOCKED) newcnd();\r
-       /* Handle global matters related to escape */\r
-       state.galaxy[quadx][quady] -= 100;\r
-       state.galaxy[iqx][iqy] += 100;\r
-       if (ienm==IHS) {\r
-               ishere=0;\r
-               iscate=0;\r
-               ientesc=0;\r
-               isatb=0;\r
-               future[FSCMOVE]=0.2777+state.date;\r
-               future[FSCDBAS]=1e30;\r
-               state.isx=iqx;\r
-               state.isy=iqy;\r
-       }\r
-       else {\r
-               for (l=1; l<=state.remcom; l++) {\r
-                       if (state.cx[l]==quadx && state.cy[l]==quady) {\r
-                               state.cx[l]=iqx;\r
-                               state.cy[l]=iqy;\r
-                               break;\r
-                       }\r
-               }\r
-               comhere = 0;\r
-       }\r
-       return 1; /* success */\r
-}\r
-\r
-\r
-static void movebaddy(int comx, int comy, int loccom, int ienm) {\r
-       int motion, mdist, nsteps, mx, my, nextx, nexty, lookx, looky, ll;\r
-       int irun = 0;\r
-       int krawlx, krawly;\r
-       int success;\r
-       int attempts;\r
-       /* This should probably be just comhere + ishere */\r
-       int nbaddys = skill > 3 ?\r
-                                 (int)((comhere*2 + ishere*2+klhere*1.23+irhere*1.5)/2.0):\r
-                                 (comhere + ishere);\r
-       double dist1, forces;\r
-\r
-       dist1 = kdist[loccom];\r
-       mdist = dist1 + 0.5; /* Nearest integer distance */\r
-\r
-       /* If SC, check with spy to see if should hi-tail it */\r
-       if (ienm==IHS &&\r
-               (kpower[loccom] <= 500.0 || (condit==IHDOCKED && damage[DPHOTON]==0))) {\r
-               irun = 1;\r
-               motion = -10;\r
-       }\r
-       else {\r
-               /* decide whether to advance, retreat, or hold position */\r
-/* Algorithm:\r
-   * Enterprise has "force" based on condition of phaser and photon torpedoes.\r
-     If both are operating full strength, force is 1000. If both are damaged,\r
-        force is -1000. Having shields down subtracts an additional 1000.\r
-\r
-   * Enemy has forces equal to the energy of the attacker plus\r
-     100*(K+R) + 500*(C+S) - 400 for novice through good levels OR\r
-        346*K + 400*R + 500*(C+S) - 400 for expert and emeritus.\r
-\r
-        Attacker Initial energy levels (nominal):\r
-                 Klingon   Romulan   Commander   Super-Commander\r
-        Novice    400        700        1200        \r
-        Fair      425        750        1250\r
-        Good      450        800        1300        1750\r
-        Expert    475        850        1350        1875\r
-        Emeritus  500        900        1400        2000\r
-     VARIANCE   75        200         200         200\r
-\r
-        Enemy vessels only move prior to their attack. In Novice - Good games\r
-        only commanders move. In Expert games, all enemy vessels move if there\r
-        is a commander present. In Emeritus games all enemy vessels move.\r
-\r
-  *  If Enterprise is not docked, an agressive action is taken if enemy\r
-     forces are 1000 greater than Enterprise.\r
-\r
-        Agressive action on average cuts the distance between the ship and\r
-        the enemy to 1/4 the original.\r
-\r
-  *  At lower energy advantage, movement units are proportional to the\r
-     advantage with a 650 advantage being to hold ground, 800 to move forward\r
-        1, 950 for two, 150 for back 4, etc. Variance of 100.\r
-\r
-        If docked, is reduced by roughly 1.75*skill, generally forcing a\r
-        retreat, especially at high skill levels.\r
-\r
-  *  Motion is limited to skill level, except for SC hi-tailing it out.\r
-  */\r
-\r
-               forces = kpower[loccom]+100.0*nenhere+400*(nbaddys-1);\r
-               if (shldup==0) forces += 1000; /* Good for enemy if shield is down! */\r
-               if (damage[DPHASER] == 0.0 || damage[DPHOTON] == 0.0) {\r
-                       if (damage[DPHASER] != 0) /* phasers damaged */\r
-                               forces += 300.0;\r
-                       else\r
-                               forces -= 0.2*(energy - 2500.0);\r
-                       if (damage[DPHOTON] != 0) /* photon torpedoes damaged */\r
-                               forces += 300.0;\r
-                       else\r
-                               forces -= 50.0*torps;\r
-               }\r
-               else {\r
-                       /* phasers and photon tubes both out! */\r
-                       forces += 1000.0;\r
-               }\r
-               motion = 0;\r
-               if (forces <= 1000.0 && condit != IHDOCKED) /* Typical situation */\r
-                       motion = ((forces+200.0*Rand())/150.0) - 5.0;\r
-               else {\r
-                       if (forces > 1000.0) /* Very strong -- move in for kill */\r
-                               motion = (1.0-square(Rand()))*dist1 + 1.0;\r
-                       if (condit==IHDOCKED) /* protected by base -- back off ! */\r
-                               motion -= skill*(2.0-square(Rand()));\r
-               }\r
-#ifdef DEBUG\r
-               if (idebug) {\r
-                       proutn("MOTION = ");\r
-                       cramf(motion, 1, 2);\r
-            proutn("  FORCES = ");\r
-                       cramf(forces, 1, 2);\r
-                       skip(1);\r
-               }\r
-#endif\r
-               /* don't move if no motion */\r
-               if (motion==0) return;\r
-               /* Limit motion according to skill */\r
-               if (abs(motion) > skill) motion = (motion < 0) ? -skill : skill;\r
-       }\r
-       /* calcuate preferred number of steps */\r
-       nsteps = motion < 0 ? -motion : motion;\r
-       if (motion > 0 && nsteps > mdist) nsteps = mdist; /* don't overshoot */\r
-       if (nsteps > 10) nsteps = 10; /* This shouldn't be necessary */\r
-       if (nsteps < 1) nsteps = 1; /* This shouldn't be necessary */\r
-#ifdef DEBUG\r
-       if (idebug) {\r
-               proutn("NSTEPS = ");\r
-               crami(nsteps, 1);\r
-               skip(1);\r
-       }\r
-#endif\r
-       /* Compute preferred values of delta X and Y */\r
-       mx = sectx - comx;\r
-       my = secty - comy;\r
-       if (2.0 * abs(mx) < abs(my)) mx = 0;\r
-       if (2.0 * abs(my) < abs(sectx-comx)) my = 0;\r
-       if (mx != 0) mx = mx*motion < 0 ? -1 : 1;\r
-       if (my != 0) my = my*motion < 0 ? -1 : 1;\r
-       nextx = comx;\r
-       nexty = comy;\r
-       frozen.quad[comx][comy] = IHDOT;\r
-       /* main move loop */\r
-       for (ll = 1; ll <= nsteps; ll++) {\r
-#ifdef DEBUG\r
-               if (idebug) {\r
-                       crami(ll,2);\r
-                       skip(1);\r
-               }\r
-#endif\r
-               /* Check if preferred position available */\r
-               lookx = nextx + mx;\r
-               looky = nexty + my;\r
-               krawlx = mx < 0 ? 1 : -1;\r
-               krawly = my < 0 ? 1 : -1;\r
-               success = 0;\r
-               attempts = 0; /* Settle mysterious hang problem */\r
-               while (attempts++ < 20 && !success) {\r
-                       if (lookx < 1 || lookx > 10) {\r
-                               if (motion < 0 && tryexit(lookx, looky, ienm, loccom, irun))\r
-                                       return;\r
-                               if (krawlx == mx || my == 0) break;\r
-                               lookx = nextx + krawlx;\r
-                               krawlx = -krawlx;\r
-                       }\r
-                       else if (looky < 1 || looky > 10) {\r
-                               if (motion < 0 && tryexit(lookx, looky, ienm, loccom, irun))\r
-                                       return;\r
-                               if (krawly == my || mx == 0) break;\r
-                               looky = nexty + krawly;\r
-                               krawly = -krawly;\r
-                       }\r
-                       else if (frozen.quad[lookx][looky] != IHDOT) {\r
-                               /* See if we should ram ship */\r
-                               if (frozen.quad[lookx][looky] == ship &&\r
-                                       (ienm == IHC || ienm == IHS)) {\r
-                                       ram(1, ienm, comx, comy);\r
-                                       return;\r
-                               }\r
-                               if (krawlx != mx && my != 0) {\r
-                                       lookx = nextx + krawlx;\r
-                                       krawlx = -krawlx;\r
-                               }\r
-                               else if (krawly != my && mx != 0) {\r
-                                       looky = nexty + krawly;\r
-                                       krawly = -krawly;\r
-                               }\r
-                               else break; /* we have failed */\r
-                       }\r
-                       else success = 1;\r
-               }\r
-               if (success) {\r
-                       nextx = lookx;\r
-                       nexty = looky;\r
-#ifdef DEBUG\r
-                       if (idebug) {\r
-                               cramlc(0, nextx, nexty);\r
-                               skip(1);\r
-                       }\r
-#endif\r
-               }\r
-               else break; /* done early */\r
-       }\r
-       /* Put commander in place within same quadrant */\r
-       frozen.quad[nextx][nexty] = ienm;\r
-       if (nextx != comx || nexty != comy) {\r
-               /* it moved */\r
-               kx[loccom] = nextx;\r
-               ky[loccom] = nexty;\r
-               kdist[loccom] = kavgd[loccom] =\r
-                                       sqrt(square(sectx-nextx)+square(secty-nexty));\r
-               if (damage[DSRSENS] == 0 || condit == IHDOCKED) {\r
-                       proutn("***");\r
-                       cramen(ienm);\r
-                       if (kdist[loccom] < dist1) proutn(" advances to");\r
-                       else proutn(" retreats to");\r
-                       cramlc(2, nextx, nexty);\r
-                       skip(1);\r
-               }\r
-       }\r
-}\r
-\r
-void movcom(void) {\r
-       int ix, iy, i;\r
-\r
-#ifdef DEBUG\r
-       if (idebug) prout("MOVCOM");\r
-#endif\r
-\r
-       /* Figure out which Klingon is the commander (or Supercommander)\r
-          and do move */\r
-       if (comhere) for (i = 1; i <= nenhere; i++) {\r
-               ix = kx[i];\r
-               iy = ky[i];\r
-               if (frozen.quad[ix][iy] == IHC) {\r
-                       movebaddy(ix, iy, i, IHC);\r
-                       break;\r
-               }\r
-       }\r
-       if (ishere) for (i = 1; i <= nenhere; i++) {\r
-               ix = kx[i];\r
-               iy = ky[i];\r
-               if (frozen.quad[ix][iy] == IHS) {\r
-                       movebaddy(ix, iy, i, IHS);\r
-                       break;\r
-               }\r
-       }\r
-       /* if skill level is high, move other Klingons and Romulans too!\r
-          Move these last so they can base their actions on what the\r
-       commander(s) do. */\r
-       if (skill > 3) for (i = 1; i <= nenhere; i++) {\r
-               ix = kx[i];\r
-               iy = ky[i];\r
-               if (frozen.quad[ix][iy] == IHK || frozen.quad[ix][iy] == IHR)\r
-                       movebaddy(ix, iy, i, frozen.quad[ix][iy]);\r
-       }\r
-\r
-       sortkl();\r
-}\r
-\r
-static int checkdest(int iqx, int iqy, int flag, int *ipage) {\r
-       int i, j;\r
-\r
-       if ((iqx==quadx && iqy==quady) ||\r
-               iqx < 1 || iqx > 8 || iqy < 1 || iqy > 8 ||\r
-               state.galaxy[iqx][iqy] > 899) return 1;\r
-       if (flag) {\r
-               /* Avoid quadrants with bases if we want to avoid Enterprise */\r
-               for (i = 1; i <= state.rembase; i++)\r
-                       if (state.baseqx[i]==iqx && state.baseqy[i]==iqy) return 1;\r
-       }\r
-\r
-       /* do the move */\r
-       state.galaxy[state.isx][state.isy] -= 100;\r
-       state.isx = iqx;\r
-       state.isy = iqy;\r
-       state.galaxy[state.isx][state.isy] += 100;\r
-       if (iscate) {\r
-               /* SC has scooted, Remove him from current quadrant */\r
-               iscate=0;\r
-               isatb=0;\r
-               ishere=0;\r
-               ientesc=0;\r
-               future[FSCDBAS]=1e30;\r
-               for (i = 1; i <= nenhere; i++) \r
-                       if (frozen.quad[kx[i]][ky[i]] == IHS) break;\r
-               frozen.quad[kx[i]][ky[i]] = IHDOT;\r
-               kx[i] = kx[nenhere];\r
-               ky[i] = ky[nenhere];\r
-               kdist[i] = kdist[nenhere];\r
-               kavgd[i] = kavgd[nenhere];\r
-               kpower[i] = kpower[nenhere];\r
-               klhere--;\r
-               nenhere--;\r
-               if (condit!=IHDOCKED) newcnd();\r
-               sortkl();\r
-       }\r
-       /* check for a helpful planet */\r
-       for (i = 1; i <= inplan; i++) {\r
-               if (state.plnets[i].x==state.isx && state.plnets[i].y==state.isy &&\r
-                       state.plnets[i].crystals == 1) {\r
-                       /* destroy the planet */\r
-                       state.plnets[i] = nulplanet;\r
-                       state.newstuf[state.isx][state.isy] -= 1;\r
-                       if (damage[DRADIO] == 0.0 || condit == IHDOCKED) {\r
-                               if (*ipage==0) pause(1);\r
-                               *ipage = 1;\r
-                               prout("Lt. Uhura-  \"Captain, Starfleet Intelligence reports");\r
-                               proutn("   a planet in");\r
-                               cramlc(1, state.isx, state.isy);\r
-                               prout(" has been destroyed");\r
-                               prout("   by the Super-commander.\"");\r
-                       }\r
-                       break;\r
-               }\r
-       }\r
-       return 0; /* looks good! */\r
-}\r
-                       \r
-               \r
-       \r
-\r
-\r
-void scom(int *ipage) {\r
-       int i, i2, j, ideltax, ideltay, ibqx, ibqy, sx, sy, ifindit, iwhichb;\r
-       int iqx, iqy;\r
-       int basetbl[6];\r
-       double bdist[6];\r
-       int flag;\r
-#ifdef DEBUG\r
-       if (idebug) prout("SCOM");\r
-#endif\r
-\r
-       /* Decide on being active or passive */\r
-       flag = ((state.killc+state.killk)/(state.date+0.01-indate) < 0.1*skill*(skill+1.0) ||\r
-                       (state.date-indate) < 3.0);\r
-       if (iscate==0 && flag) {\r
-               /* compute move away from Enterprise */\r
-               ideltax = state.isx-quadx;\r
-               ideltay = state.isy-quady;\r
-               if (sqrt(ideltax*(double)ideltax+ideltay*(double)ideltay) > 2.0) {\r
-                       /* circulate in space */\r
-                       ideltax = state.isy-quady;\r
-                       ideltay = quadx-state.isx;\r
-               }\r
-       }\r
-       else {\r
-               /* compute distances to starbases */\r
-               if (state.rembase <= 0) {\r
-                       /* nothing left to do */\r
-                       future[FSCMOVE] = 1e30;\r
-                       return;\r
-               }\r
-               sx = state.isx;\r
-               sy = state.isy;\r
-               for (i = 1; i <= state.rembase; i++) {\r
-                       basetbl[i] = i;\r
-                       ibqx = state.baseqx[i];\r
-                       ibqy = state.baseqy[i];\r
-                       bdist[i] = sqrt(square(ibqx-sx) + square(ibqy-sy));\r
-               }\r
-               if (state.rembase > 1) {\r
-                       /* sort into nearest first order */\r
-                       int iswitch;\r
-                       do {\r
-                               iswitch = 0;\r
-                               for (i=1; i < state.rembase-1; i++) {\r
-                                       if (bdist[i] > bdist[i+1]) {\r
-                                               int ti = basetbl[i];\r
-                                               double t = bdist[i];\r
-                                               bdist[i] = bdist[i+1];\r
-                                               bdist[i+1] = t;\r
-                                               basetbl[i] = basetbl[i+1];\r
-                                               basetbl[i+1] =ti;\r
-                                               iswitch = 1;\r
-                                       }\r
-                               }\r
-                       } while (iswitch);\r
-               }\r
-               /* look for nearest base without a commander, no Enterprise, and\r
-                  without too many Klingons, and not already under attack. */\r
-               ifindit = iwhichb = 0;\r
-\r
-               for (i2 = 1; i2 <= state.rembase; i2++) {\r
-                       i = basetbl[i2];        /* bug in original had it not finding nearest*/\r
-                       ibqx = state.baseqx[i];\r
-                       ibqy = state.baseqy[i];\r
-                       if ((ibqx == quadx && ibqy == quady) ||\r
-                               (ibqx == batx && ibqy == baty) ||\r
-                               state.galaxy[ibqx][ibqy] > 899) continue;\r
-                       /* if there is a commander, an no other base is appropriate,\r
-                          we will take the one with the commander */\r
-                       for (j = 1; j <= state.remcom; j++) {\r
-                               if (ibqx==state.cx[j] && ibqy==state.cy[j] && ifindit!= 2) {\r
-                                               ifindit = 2;\r
-                                               iwhichb = i;\r
-                                               break;\r
-                               }\r
-                       }\r
-                       if (j > state.remcom) { /* no commander -- use this one */\r
-                               ifindit = 1;\r
-                               iwhichb = i;\r
-                               break;\r
-                       }\r
-               }\r
-               if (ifindit==0) return; /* Nothing suitable -- wait until next time*/\r
-               ibqx = state.baseqx[iwhichb];\r
-               ibqy = state.baseqy[iwhichb];\r
-               /* decide how to move toward base */\r
-               ideltax = ibqx - state.isx;\r
-               ideltay = ibqy - state.isy;\r
-       }\r
-       /* Maximum movement is 1 quadrant in either or both axis */\r
-       if (ideltax > 1) ideltax = 1;\r
-       if (ideltax < -1) ideltax = -1;\r
-       if (ideltay > 1) ideltay = 1;\r
-       if (ideltay < -1) ideltay = -1;\r
-\r
-       /* try moving in both x and y directions */\r
-       iqx = state.isx + ideltax;\r
-       iqy = state.isy + ideltax;\r
-       if (checkdest(iqx, iqy, flag, ipage)) {\r
-               /* failed -- try some other maneuvers */\r
-               if (ideltax==0 || ideltay==0) {\r
-                       /* attempt angle move */\r
-                       if (ideltax != 0) {\r
-                               iqy = state.isy + 1;\r
-                               if (checkdest(iqx, iqy, flag, ipage)) {\r
-                                       iqy = state.isy - 1;\r
-                                       checkdest(iqx, iqy, flag, ipage);\r
-                               }\r
-                       }\r
-                       else {\r
-                               iqx = state.isx + 1;\r
-                               if (checkdest(iqx, iqy, flag, ipage)) {\r
-                                       iqx = state.isx - 1;\r
-                                       checkdest(iqx, iqy, flag, ipage);\r
-                               }\r
-                       }\r
-               }\r
-               else {\r
-                       /* try moving just in x or y */\r
-                       iqy = state.isy;\r
-                       if (checkdest(iqx, iqy, flag, ipage)) {\r
-                               iqy = state.isy + ideltay;\r
-                               iqx = state.isx;\r
-                               checkdest(iqx, iqy, flag, ipage);\r
-                       }\r
-               }\r
-       }\r
-       /* check for a base */\r
-       if (state.rembase == 0) {\r
-               future[FSCMOVE] = 1e30;\r
-       }\r
-       else for (i=1; i<=state.rembase; i++) {\r
-               ibqx = state.baseqx[i];\r
-               ibqy = state.baseqy[i];\r
-               if (ibqx==state.isx && ibqy == state.isy && state.isx != batx && state.isy != baty) {\r
-                       /* attack the base */\r
-                       if (flag) return; /* no, don't attack base! */\r
-                       iseenit = 0;\r
-                       isatb=1;\r
-                       future[FSCDBAS] = state.date + 1.0 +2.0*Rand();\r
-                       if (batx != 0) future[FSCDBAS] += future[FCDBAS]-state.date;\r
-                       if (damage[DRADIO] > 0 && condit != IHDOCKED)\r
-                               return; /* no warning */\r
-                       iseenit = 1;\r
-                       if (*ipage == 0)  pause(1);\r
-                       *ipage=1;\r
-                       proutn("Lt. Uhura-  \"Captain, the starbase in");\r
-                       cramlc(1, state.isx, state.isy);\r
-                       skip(1);\r
-                       prout("   reports that it is under attack from the Klingon Super-commander.");\r
-                       proutn("   It can survive until stardate ");\r
-                       cramf(future[FSCDBAS], 0, 1);\r
-                       prout(" .\"");\r
-                       if (resting==0) return;\r
-                       prout("Mr. Spock-  \"Captain, shall we cancel the rest period?\"");\r
-                       if (ja()==0) return;\r
-                       resting = 0;\r
-                       Time = 0.0; /* actually finished */\r
-                       return;\r
-               }\r
-       }\r
-       /* Check for intelligence report */\r
-       if (\r
-#ifdef DEBUG\r
-               idebug==0 &&\r
-#endif\r
-               (Rand() > 0.2 ||\r
-                (damage[DRADIO] > 0.0 && condit != IHDOCKED) ||\r
-                starch[state.isx][state.isy] > 0))\r
-               return;\r
-       if (*ipage==0) pause(1);\r
-       *ipage = 1;\r
-       prout("Lt. Uhura-  \"Captain, Starfleet Intelligence reports");\r
-       proutn("   the Super-commander is in");\r
-       cramlc(1, state.isx, state. isy);\r
-       prout(".\"");\r
-       return;\r
-}\r
-\r
-void movetho(void) {\r
-       int idx, idy, im, i, dum, my;\r
-       /* Move the Tholian */\r
-       if (ithere==0 || justin == 1) return;\r
-\r
-       if (ithx == 1 && ithy == 1) {\r
-               idx = 1; idy = 10;\r
-       }\r
-       else if (ithx == 1 && ithy == 10) {\r
-               idx = 10; idy = 10;\r
-       }\r
-       else if (ithx == 10 && ithy == 10) {\r
-               idx = 10; idy = 1;\r
-       }\r
-       else if (ithx == 10 && ithy == 1) {\r
-               idx = 1; idy = 1;\r
-       }\r
-       else {\r
-               /* something is wrong! */\r
-               ithere = 0;\r
-               return;\r
-       }\r
-\r
-       /* Do nothing if we are blocked */\r
-       if (frozen.quad[idx][idy]!= IHDOT && frozen.quad[idx][idy]!= IHWEB) return;\r
-       frozen.quad[ithx][ithy] = IHWEB;\r
-\r
-       if (ithx != idx) {\r
-               /* move in x axis */\r
-               im = fabs((double)idx - ithx)/((double)idx - ithx);\r
-               while (ithx != idx) {\r
-                       ithx += im;\r
-                       if (frozen.quad[ithx][ithy]==IHDOT) frozen.quad[ithx][ithy] = IHWEB;\r
-               }\r
-       }\r
-       else if (ithy != idy) {\r
-               /* move in y axis */\r
-               im = fabs((double)idy - ithy)/((double)idy - ithy);\r
-               while (ithy != idy) {\r
-                       ithy += im;\r
-                       if (frozen.quad[ithx][ithy]==IHDOT) frozen.quad[ithx][ithy] = IHWEB;\r
-               }\r
-       }\r
-       frozen.quad[ithx][ithy] = IHT;\r
-\r
-       /* check to see if all holes plugged */\r
-       for (i = 1; i < 11; i++) {\r
-               if (frozen.quad[1][i]!=IHWEB && frozen.quad[1][i]!=IHT) return;\r
-               if (frozen.quad[10][i]!=IHWEB && frozen.quad[10][i]!=IHT) return;\r
-               if (frozen.quad[i][1]!=IHWEB && frozen.quad[i][1]!=IHT) return;\r
-               if (frozen.quad[i][10]!=IHWEB && frozen.quad[i][10]!=IHT) return;\r
-       }\r
-       /* All plugged up -- Tholian splits */\r
-       frozen.quad[ithx][ithy]=IHWEB;\r
-       dropin(IHBLANK, &dum, &my);\r
-       crmena(1,IHT, 2, ithx, ithy);\r
-       prout(" completes web.");\r
-       ithere = ithx = ithy = 0;\r
-       return;\r
-}\r
+#include "sst.h"
+
+static int tryexit(int lookx, int looky, int ienm, int loccom, int irun) {
+       int iqx, iqy, l;
+
+       iqx = quadx+(lookx+(QUADSIZE-1))/QUADSIZE - 1;
+       iqy = quady+(looky+(QUADSIZE-1))/QUADSIZE - 1;
+       if (iqx < 1 || iqx > GALSIZE || iqy < 1 || iqy > GALSIZE ||
+               game.state.galaxy[iqx][iqy] > 899)
+               return 0; /* no can do -- neg energy, supernovae, or >8 Klingons */
+       if (ienm == IHR) return 0; /* Romulans cannot escape! */
+       if (irun == 0) {
+               /* avoid intruding on another commander's territory */
+               if (ienm == IHC) {
+                       for (l = 1; l <= game.state.remcom; l++)
+                               if (game.state.cx[l]==iqx && game.state.cy[l]==iqy) return 0;
+                       /* refuse to leave if currently attacking starbase */
+                       if (batx==quadx && baty==quady) return 0;
+               }
+               /* don't leave if over 1000 units of energy */
+               if (game.kpower[loccom] > 1000.) return 0;
+       }
+       /* print escape message and move out of quadrant.
+          We know this if either short or long range sensors are working */
+       if (game.damage[DSRSENS] == 0.0 || game.damage[DLRSENS] == 0.0 ||
+               condit == IHDOCKED) {
+               crmena(1, ienm, 2, game.kx[loccom], game.ky[loccom]);
+               prout(" escapes to %s (and regains strength).",
+                      cramlc(quadrant, iqx, iqy));
+       }
+       /* handle local matters related to escape */
+       game.quad[game.kx[loccom]][game.ky[loccom]] = IHDOT;
+       game.kx[loccom] = game.kx[nenhere];
+       game.ky[loccom] = game.ky[nenhere];
+       game.kavgd[loccom] = game.kavgd[nenhere];
+       game.kpower[loccom] = game.kpower[nenhere];
+       game.kdist[loccom] = game.kdist[nenhere];
+       klhere--;
+       nenhere--;
+       if (condit != IHDOCKED) newcnd();
+       /* Handle global matters related to escape */
+       game.state.galaxy[quadx][quady] -= ENEMY_PLACE;
+       game.state.galaxy[iqx][iqy] += ENEMY_PLACE;
+       if (ienm==IHS) {
+               ishere=0;
+               iscate=0;
+               ientesc=0;
+               isatb=0;
+               game.future[FSCMOVE]=0.2777+game.state.date;
+               game.future[FSCDBAS]=1e30;
+               game.state.isx=iqx;
+               game.state.isy=iqy;
+       }
+       else {
+               for (l=1; l<=game.state.remcom; l++) {
+                       if (game.state.cx[l]==quadx && game.state.cy[l]==quady) {
+                               game.state.cx[l]=iqx;
+                               game.state.cy[l]=iqy;
+                               break;
+                       }
+               }
+               comhere = 0;
+       }
+       return 1; /* success */
+}
+
+
+static void movebaddy(int comx, int comy, int loccom, int ienm) {
+       int motion, mdist, nsteps, mx, my, nextx, nexty, lookx, looky, ll;
+       int irun = 0;
+       int krawlx, krawly;
+       int success;
+       int attempts;
+       /* This should probably be just comhere + ishere */
+       int nbaddys = skill > 3 ?
+                                 (int)((comhere*2 + ishere*2+klhere*1.23+irhere*1.5)/2.0):
+                                 (comhere + ishere);
+       double dist1, forces;
+
+       dist1 = game.kdist[loccom];
+       mdist = dist1 + 0.5; /* Nearest integer distance */
+
+       /* If SC, check with spy to see if should hi-tail it */
+       if (ienm==IHS &&
+               (game.kpower[loccom] <= 500.0 || (condit==IHDOCKED && game.damage[DPHOTON]==0))) {
+               irun = 1;
+               motion = -QUADSIZE;
+       }
+       else {
+               /* decide whether to advance, retreat, or hold position */
+/* Algorithm:
+   * Enterprise has "force" based on condition of phaser and photon torpedoes.
+     If both are operating full strength, force is 1000. If both are damaged,
+        force is -1000. Having shields down subtracts an additional 1000.
+
+   * Enemy has forces equal to the energy of the attacker plus
+     100*(K+R) + 500*(C+S) - 400 for novice through good levels OR
+        346*K + 400*R + 500*(C+S) - 400 for expert and emeritus.
+
+        Attacker Initial energy levels (nominal):
+                 Klingon   Romulan   Commander   Super-Commander
+        Novice    400        700        1200        
+        Fair      425        750        1250
+        Good      450        800        1300        1750
+        Expert    475        850        1350        1875
+        Emeritus  500        900        1400        2000
+     VARIANCE   75        200         200         200
+
+        Enemy vessels only move prior to their attack. In Novice - Good games
+        only commanders move. In Expert games, all enemy vessels move if there
+        is a commander present. In Emeritus games all enemy vessels move.
+
+  *  If Enterprise is not docked, an agressive action is taken if enemy
+     forces are 1000 greater than Enterprise.
+
+        Agressive action on average cuts the distance between the ship and
+        the enemy to 1/4 the original.
+
+  *  At lower energy advantage, movement units are proportional to the
+     advantage with a 650 advantage being to hold ground, 800 to move forward
+        1, 950 for two, 150 for back 4, etc. Variance of 100.
+
+        If docked, is reduced by roughly 1.75*skill, generally forcing a
+        retreat, especially at high skill levels.
+
+  *  Motion is limited to skill level, except for SC hi-tailing it out.
+  */
+
+               forces = game.kpower[loccom]+100.0*nenhere+400*(nbaddys-1);
+               if (shldup==0) forces += 1000; /* Good for enemy if shield is down! */
+               if (game.damage[DPHASER] == 0.0 || game.damage[DPHOTON] == 0.0) {
+                       if (game.damage[DPHASER] != 0) /* phasers damaged */
+                               forces += 300.0;
+                       else
+                               forces -= 0.2*(energy - 2500.0);
+                       if (game.damage[DPHOTON] != 0) /* photon torpedoes damaged */
+                               forces += 300.0;
+                       else
+                               forces -= 50.0*torps;
+               }
+               else {
+                       /* phasers and photon tubes both out! */
+                       forces += 1000.0;
+               }
+               motion = 0;
+               if (forces <= 1000.0 && condit != IHDOCKED) /* Typical situation */
+                       motion = ((forces+200.0*Rand())/150.0) - 5.0;
+               else {
+                       if (forces > 1000.0) /* Very strong -- move in for kill */
+                               motion = (1.0-square(Rand()))*dist1 + 1.0;
+                       if (condit==IHDOCKED) /* protected by base -- back off ! */
+                               motion -= skill*(2.0-square(Rand()));
+               }
+#ifdef DEBUG
+               if (idebug) {
+                       proutn("MOTION = %1.2f", motion);
+                       proutn("  FORCES = %1,2f", forces);
+               }
+#endif
+               /* don't move if no motion */
+               if (motion==0) return;
+               /* Limit motion according to skill */
+               if (abs(motion) > skill) motion = (motion < 0) ? -skill : skill;
+       }
+       /* calcuate preferred number of steps */
+       nsteps = motion < 0 ? -motion : motion;
+       if (motion > 0 && nsteps > mdist) nsteps = mdist; /* don't overshoot */
+       if (nsteps > QUADSIZE) nsteps = QUADSIZE; /* This shouldn't be necessary */
+       if (nsteps < 1) nsteps = 1; /* This shouldn't be necessary */
+#ifdef DEBUG
+       if (idebug) {
+               prout("NSTEPS = %d", nsteps);
+       }
+#endif
+       /* Compute preferred values of delta X and Y */
+       mx = sectx - comx;
+       my = secty - comy;
+       if (2.0 * abs(mx) < abs(my)) mx = 0;
+       if (2.0 * abs(my) < abs(sectx-comx)) my = 0;
+       if (mx != 0) mx = mx*motion < 0 ? -1 : 1;
+       if (my != 0) my = my*motion < 0 ? -1 : 1;
+       nextx = comx;
+       nexty = comy;
+       /* main move loop */
+       for (ll = 1; ll <= nsteps; ll++) {
+#ifdef DEBUG
+               if (idebug) {
+                       prout("%d", ll);
+               }
+#endif
+               /* Check if preferred position available */
+               lookx = nextx + mx;
+               looky = nexty + my;
+               krawlx = mx < 0 ? 1 : -1;
+               krawly = my < 0 ? 1 : -1;
+               success = 0;
+               attempts = 0; /* Settle mysterious hang problem */
+               while (attempts++ < 20 && !success) {
+                       if (lookx < 1 || lookx > QUADSIZE) {
+                               if (motion < 0 && tryexit(lookx, looky, ienm, loccom, irun))
+                                       return;
+                               if (krawlx == mx || my == 0) break;
+                               lookx = nextx + krawlx;
+                               krawlx = -krawlx;
+                       }
+                       else if (looky < 1 || looky > QUADSIZE) {
+                               if (motion < 0 && tryexit(lookx, looky, ienm, loccom, irun))
+                                       return;
+                               if (krawly == my || mx == 0) break;
+                               looky = nexty + krawly;
+                               krawly = -krawly;
+                       }
+                       else if (game.quad[lookx][looky] != IHDOT) {
+                               /* See if we should ram ship */
+                               if (game.quad[lookx][looky] == ship &&
+                                       (ienm == IHC || ienm == IHS)) {
+                                       ram(1, ienm, comx, comy);
+                                       return;
+                               }
+                               if (krawlx != mx && my != 0) {
+                                       lookx = nextx + krawlx;
+                                       krawlx = -krawlx;
+                               }
+                               else if (krawly != my && mx != 0) {
+                                       looky = nexty + krawly;
+                                       krawly = -krawly;
+                               }
+                               else break; /* we have failed */
+                       }
+                       else success = 1;
+               }
+               if (success) {
+                       nextx = lookx;
+                       nexty = looky;
+#ifdef DEBUG
+                       if (idebug) {
+                               prout(cramlc(neither, nextx, nexty));
+                       }
+#endif
+               }
+               else break; /* done early */
+       }
+       /* Put commander in place within same quadrant */
+       game.quad[comx][comy] = IHDOT;
+       game.quad[nextx][nexty] = ienm;
+       if (nextx != comx || nexty != comy) {
+               /* it moved */
+               game.kx[loccom] = nextx;
+               game.ky[loccom] = nexty;
+               game.kdist[loccom] = game.kavgd[loccom] =
+                                       sqrt(square(sectx-nextx)+square(secty-nexty));
+               if (game.damage[DSRSENS] == 0 || condit == IHDOCKED) {
+                       proutn("***");
+                       cramen(ienm);
+                       proutn(" from %s", cramlc(2, comx, comy));
+                       if (game.kdist[loccom] < dist1) proutn(" advances to ");
+                       else proutn(" retreats to ");
+                       prout(cramlc(sector, nextx, nexty));
+               }
+       }
+}
+
+void movcom(void) {
+       int ix, iy, i;
+
+#ifdef DEBUG
+       if (idebug) prout("MOVCOM");
+#endif
+
+       /* Figure out which Klingon is the commander (or Supercommander)
+          and do move */
+       if (comhere) for (i = 1; i <= nenhere; i++) {
+               ix = game.kx[i];
+               iy = game.ky[i];
+               if (game.quad[ix][iy] == IHC) {
+                       movebaddy(ix, iy, i, IHC);
+                       break;
+               }
+       }
+       if (ishere) for (i = 1; i <= nenhere; i++) {
+               ix = game.kx[i];
+               iy = game.ky[i];
+               if (game.quad[ix][iy] == IHS) {
+                       movebaddy(ix, iy, i, IHS);
+                       break;
+               }
+       }
+       /* if skill level is high, move other Klingons and Romulans too!
+          Move these last so they can base their actions on what the
+       commander(s) do. */
+       if (skill > 3) for (i = 1; i <= nenhere; i++) {
+               ix = game.kx[i];
+               iy = game.ky[i];
+               if (game.quad[ix][iy] == IHK || game.quad[ix][iy] == IHR)
+                       movebaddy(ix, iy, i, game.quad[ix][iy]);
+       }
+
+       sortkl();
+}
+
+static int movescom(int iqx, int iqy, int flag, int *ipage) {
+       int i;
+
+       if ((iqx==quadx && iqy==quady) ||
+               iqx < 1 || iqx > GALSIZE || iqy < 1 || iqy > GALSIZE ||
+               game.state.galaxy[iqx][iqy] > 899) return 1;
+       if (flag) {
+               /* Avoid quadrants with bases if we want to avoid Enterprise */
+               for (i = 1; i <= game.state.rembase; i++)
+                       if (game.state.baseqx[i]==iqx && game.state.baseqy[i]==iqy) return 1;
+       }
+       if (justin && !iscate) return 1;
+       /* do the move */
+       game.state.galaxy[game.state.isx][game.state.isy] -= ENEMY_PLACE;
+       game.state.isx = iqx;
+       game.state.isy = iqy;
+       game.state.galaxy[game.state.isx][game.state.isy] += ENEMY_PLACE;
+       if (ishere) {
+               /* SC has scooted, Remove him from current quadrant */
+               iscate=0;
+               isatb=0;
+               ishere=0;
+               ientesc=0;
+               game.future[FSCDBAS]=1e30;
+               for (i = 1; i <= nenhere; i++) 
+                       if (game.quad[game.kx[i]][game.ky[i]] == IHS) break;
+               game.quad[game.kx[i]][game.ky[i]] = IHDOT;
+               game.kx[i] = game.kx[nenhere];
+               game.ky[i] = game.ky[nenhere];
+               game.kdist[i] = game.kdist[nenhere];
+               game.kavgd[i] = game.kavgd[nenhere];
+               game.kpower[i] = game.kpower[nenhere];
+               klhere--;
+               nenhere--;
+               if (condit!=IHDOCKED) newcnd();
+               sortkl();
+       }
+       /* check for a helpful planet */
+       for (i = 0; i < inplan; i++) {
+               if (game.state.plnets[i].x==game.state.isx && game.state.plnets[i].y==game.state.isy &&
+                       game.state.plnets[i].crystals == 1) {
+                       /* destroy the planet */
+                       DESTROY(&game.state.plnets[i]);
+                       game.state.newstuf[game.state.isx][game.state.isy] -= 1;
+                       if (game.damage[DRADIO] == 0.0 || condit == IHDOCKED) {
+                               if (*ipage==0) pause_game(1);
+                               *ipage = 1;
+                               prout("Lt. Uhura-  \"Captain, Starfleet Intelligence reports");
+                               proutn("   a planet in ");
+                               proutn(cramlc(quadrant, game.state.isx, game.state.isy));
+                               prout(" has been destroyed");
+                               prout("   by the Super-commander.\"");
+                       }
+                       break;
+               }
+       }
+       return 0; /* looks good! */
+}
+                       
+               
+       
+
+
+void scom(int *ipage) {
+       int i, i2, j, ideltax, ideltay, ibqx, ibqy, sx, sy, ifindit, iwhichb;
+       int iqx, iqy;
+       int basetbl[BASEMAX];
+       double bdist[BASEMAX];
+       int flag;
+#ifdef DEBUG
+       if (idebug) prout("SCOM");
+#endif
+
+       /* Decide on being active or passive */
+       flag = ((game.state.killc+game.state.killk)/(game.state.date+0.01-indate) < 0.1*skill*(skill+1.0) ||
+                       (game.state.date-indate) < 3.0);
+       if (iscate==0 && flag) {
+               /* compute move away from Enterprise */
+               ideltax = game.state.isx-quadx;
+               ideltay = game.state.isy-quady;
+               if (sqrt(ideltax*(double)ideltax+ideltay*(double)ideltay) > 2.0) {
+                       /* circulate in space */
+                       ideltax = game.state.isy-quady;
+                       ideltay = quadx-game.state.isx;
+               }
+       }
+       else {
+               /* compute distances to starbases */
+               if (game.state.rembase <= 0) {
+                       /* nothing left to do */
+                       game.future[FSCMOVE] = 1e30;
+                       return;
+               }
+               sx = game.state.isx;
+               sy = game.state.isy;
+               for (i = 1; i <= game.state.rembase; i++) {
+                       basetbl[i] = i;
+                       ibqx = game.state.baseqx[i];
+                       ibqy = game.state.baseqy[i];
+                       bdist[i] = sqrt(square(ibqx-sx) + square(ibqy-sy));
+               }
+               if (game.state.rembase > 1) {
+                       /* sort into nearest first order */
+                       int iswitch;
+                       do {
+                               iswitch = 0;
+                               for (i=1; i < game.state.rembase-1; i++) {
+                                       if (bdist[i] > bdist[i+1]) {
+                                               int ti = basetbl[i];
+                                               double t = bdist[i];
+                                               bdist[i] = bdist[i+1];
+                                               bdist[i+1] = t;
+                                               basetbl[i] = basetbl[i+1];
+                                               basetbl[i+1] =ti;
+                                               iswitch = 1;
+                                       }
+                               }
+                       } while (iswitch);
+               }
+               /* look for nearest base without a commander, no Enterprise, and
+                  without too many Klingons, and not already under attack. */
+               ifindit = iwhichb = 0;
+
+               for (i2 = 1; i2 <= game.state.rembase; i2++) {
+                       i = basetbl[i2];        /* bug in original had it not finding nearest*/
+                       ibqx = game.state.baseqx[i];
+                       ibqy = game.state.baseqy[i];
+                       if ((ibqx == quadx && ibqy == quady) ||
+                               (ibqx == batx && ibqy == baty) ||
+                               game.state.galaxy[ibqx][ibqy] > 899) continue;
+                       /* if there is a commander, an no other base is appropriate,
+                          we will take the one with the commander */
+                       for (j = 1; j <= game.state.remcom; j++) {
+                               if (ibqx==game.state.cx[j] && ibqy==game.state.cy[j] && ifindit!= 2) {
+                                               ifindit = 2;
+                                               iwhichb = i;
+                                               break;
+                               }
+                       }
+                       if (j > game.state.remcom) { /* no commander -- use this one */
+                               ifindit = 1;
+                               iwhichb = i;
+                               break;
+                       }
+               }
+               if (ifindit==0) return; /* Nothing suitable -- wait until next time*/
+               ibqx = game.state.baseqx[iwhichb];
+               ibqy = game.state.baseqy[iwhichb];
+               /* decide how to move toward base */
+               ideltax = ibqx - game.state.isx;
+               ideltay = ibqy - game.state.isy;
+       }
+       /* Maximum movement is 1 quadrant in either or both axis */
+       if (ideltax > 1) ideltax = 1;
+       if (ideltax < -1) ideltax = -1;
+       if (ideltay > 1) ideltay = 1;
+       if (ideltay < -1) ideltay = -1;
+
+       /* try moving in both x and y directions */
+       iqx = game.state.isx + ideltax;
+       iqy = game.state.isy + ideltax;
+       if (movescom(iqx, iqy, flag, ipage)) {
+               /* failed -- try some other maneuvers */
+               if (ideltax==0 || ideltay==0) {
+                       /* attempt angle move */
+                       if (ideltax != 0) {
+                               iqy = game.state.isy + 1;
+                               if (movescom(iqx, iqy, flag, ipage)) {
+                                       iqy = game.state.isy - 1;
+                                       movescom(iqx, iqy, flag, ipage);
+                               }
+                       }
+                       else {
+                               iqx = game.state.isx + 1;
+                               if (movescom(iqx, iqy, flag, ipage)) {
+                                       iqx = game.state.isx - 1;
+                                       movescom(iqx, iqy, flag, ipage);
+                               }
+                       }
+               }
+               else {
+                       /* try moving just in x or y */
+                       iqy = game.state.isy;
+                       if (movescom(iqx, iqy, flag, ipage)) {
+                               iqy = game.state.isy + ideltay;
+                               iqx = game.state.isx;
+                               movescom(iqx, iqy, flag, ipage);
+                       }
+               }
+       }
+       /* check for a base */
+       if (game.state.rembase == 0) {
+               game.future[FSCMOVE] = 1e30;
+       }
+       else for (i=1; i<=game.state.rembase; i++) {
+               ibqx = game.state.baseqx[i];
+               ibqy = game.state.baseqy[i];
+               if (ibqx==game.state.isx && ibqy == game.state.isy && game.state.isx != batx && game.state.isy != baty) {
+                       /* attack the base */
+                       if (flag) return; /* no, don't attack base! */
+                       iseenit = 0;
+                       isatb=1;
+                       game.future[FSCDBAS] = game.state.date + 1.0 +2.0*Rand();
+                       if (game.future[FCDBAS] < 1e30) game.future[FSCDBAS] +=
+                               game.future[FCDBAS]-game.state.date;
+                       if (game.damage[DRADIO] > 0 && condit != IHDOCKED)
+                               return; /* no warning */
+                       iseenit = 1;
+                       if (*ipage == 0)  pause_game(1);
+                       *ipage=1;
+                       proutn("Lt. Uhura-  \"Captain, the starbase in ");
+                       proutn(cramlc(quadrant, game.state.isx, game.state.isy));
+                       skip(1);
+                       prout("   reports that it is under attack from the Klingon Super-commander.");
+                       proutn("   It can survive until stardate %d.\"",
+                              (int)game.future[FSCDBAS]);
+                       if (resting==0) return;
+                       prout("Mr. Spock-  \"Captain, shall we cancel the rest period?\"");
+                       if (ja()==0) return;
+                       resting = 0;
+                       Time = 0.0; /* actually finished */
+                       return;
+               }
+       }
+       /* Check for intelligence report */
+       if (
+#ifdef DEBUG
+               idebug==0 &&
+#endif
+               (Rand() > 0.2 ||
+                (game.damage[DRADIO] > 0.0 && condit != IHDOCKED) ||
+                game.starch[game.state.isx][game.state.isy] > 0))
+               return;
+       if (*ipage==0) pause_game(1);
+       *ipage = 1;
+       prout("Lt. Uhura-  \"Captain, Starfleet Intelligence reports");
+       proutn("   the Super-commander is in ");
+       proutn(cramlc(quadrant, game.state.isx, game.state. isy));
+       prout(".\"");
+       return;
+}
+
+void movetho(void) {
+       int idx, idy, im, i, dum, my;
+       /* Move the Tholian */
+       if (ithere==0 || justin == 1) return;
+
+       if (ithx == 1 && ithy == 1) {
+               idx = 1; idy = QUADSIZE;
+       }
+       else if (ithx == 1 && ithy == QUADSIZE) {
+               idx = QUADSIZE; idy = QUADSIZE;
+       }
+       else if (ithx == QUADSIZE && ithy == QUADSIZE) {
+               idx = QUADSIZE; idy = 1;
+       }
+       else if (ithx == QUADSIZE && ithy == 1) {
+               idx = 1; idy = 1;
+       }
+       else {
+               /* something is wrong! */
+               ithere = 0;
+               return;
+       }
+
+       /* Do nothing if we are blocked */
+       if (game.quad[idx][idy]!= IHDOT && game.quad[idx][idy]!= IHWEB) return;
+       game.quad[ithx][ithy] = IHWEB;
+
+       if (ithx != idx) {
+               /* move in x axis */
+               im = fabs((double)idx - ithx)/((double)idx - ithx);
+               while (ithx != idx) {
+                       ithx += im;
+                       if (game.quad[ithx][ithy]==IHDOT) game.quad[ithx][ithy] = IHWEB;
+               }
+       }
+       else if (ithy != idy) {
+               /* move in y axis */
+               im = fabs((double)idy - ithy)/((double)idy - ithy);
+               while (ithy != idy) {
+                       ithy += im;
+                       if (game.quad[ithx][ithy]==IHDOT) game.quad[ithx][ithy] = IHWEB;
+               }
+       }
+       game.quad[ithx][ithy] = IHT;
+        game.kx[nenhere]=ithx;
+        game.ky[nenhere]=ithy;
+
+       /* check to see if all holes plugged */
+       for (i = 1; i < QUADSIZE+1; i++) {
+               if (game.quad[1][i]!=IHWEB && game.quad[1][i]!=IHT) return;
+               if (game.quad[QUADSIZE][i]!=IHWEB && game.quad[QUADSIZE][i]!=IHT) return;
+               if (game.quad[i][1]!=IHWEB && game.quad[i][1]!=IHT) return;
+               if (game.quad[i][QUADSIZE]!=IHWEB && game.quad[i][QUADSIZE]!=IHT) return;
+       }
+       /* All plugged up -- Tholian splits */
+       game.quad[ithx][ithy]=IHWEB;
+       dropin(IHBLANK, &dum, &my);
+       crmena(1,IHT, 2, ithx, ithy);
+       prout(" completes web.");
+       ithere = ithx = ithy = 0;
+       nenhere--;
+       return;
+}