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weapon.c revision 1.1
      1 /* $Header: /tank/opengrok/rsync2/NetBSD/src/games/warp/weapon.c,v 1.1 2020/11/09 23:37:05 kamil Exp $ */
      2 
      3 /* $Log: weapon.c,v $
      4 /* Revision 1.1  2020/11/09 23:37:05  kamil
      5 /* Add Warp Kit, Version 7.0 by Larry Wall
      6 /*
      7 /* Warp is a real-time space war game that doesn't get boring very quickly.
      8 /* Read warp.doc and the manual page for more information.
      9 /*
     10 /* games/warp originally distributed with 4.3BSD-Reno, is back to the BSD
     11 /* world via NetBSD. Its remnants were still mentioned in games/Makefile.
     12 /*
     13 /* Larry Wall, the original author and the copyright holder, generously
     14 /* donated the game and copyright to The NetBSD Foundation, Inc.
     15 /*
     16 /* Import the game sources as-is from 4.3BSD-Reno, with the cession
     17 /* of the copyright and license to BSD-2-clause NetBSD-style.
     18 /*
     19 /* Signed-off-by: Larry Wall <larry (at) wall.org>
     20 /* Signed-off-by: Kamil Rytarowski <kamil (at) netbsd.org>
     21 /*
     22  * Revision 7.0.1.2  86/10/20  14:36:33  lwall
     23  * Picked some lint.
     24  *
     25  * Revision 7.0.1.1  86/10/16  10:54:42  lwall
     26  * Added Damage.  Fixed random bugs.
     27  *
     28  * Revision 7.0  86/10/08  15:18:08  lwall
     29  * Split into separate files.  Added amoebas and pirates.
     30  *
     31  */
     32 
     33 #include "EXTERN.h"
     34 #include "warp.h"
     35 #include "bang.h"
     36 #include "object.h"
     37 #include "move.h"
     38 #include "score.h"
     39 #include "sig.h"
     40 #include "term.h"
     41 #include "them.h"
     42 #include "us.h"
     43 #include "util.h"
     44 #include "INTERN.h"
     45 #include "weapon.h"
     46 
     47 void
     48 weapon_init()
     49 {
     50     ;
     51 }
     52 
     53 void
     54 fire_torp(from, ydir, xdir)
     55 Reg1 OBJECT *from;
     56 Reg3 int ydir;
     57 Reg4 int xdir;
     58 {
     59     Reg2 OBJECT *to;
     60 
     61     if (from->type == Enemy ||
     62        (from == ent && etorp > 0) ||
     63        (from == base && btorp > 0)) {
     64 	to = occupant[(from->posy+from->vely+ydir+YSIZE00)%YSIZE]
     65 		     [(from->posx+from->velx+xdir+XSIZE00)%XSIZE];
     66 	if (from->type != Enemy || !to || to->vely || to->velx) {
     67 	    if (from->type != Enemy &&
     68 		 (to = isatorp[from==base][ydir+1][xdir+1])) {
     69 		to->vely += ydir;
     70 		to->velx += xdir;
     71 	    }
     72 	    else {
     73 		if (from == ent) {
     74 		    to = make_object(Torp, '+', from->posy,from->posx,
     75 			from->vely+ydir,from->velx+xdir, 0L, 1L,&root);
     76 		    aretorps++;
     77 		    isatorp[0][ydir+1][xdir+1] = to;
     78 		    etorp--;
     79 		}
     80 		else if (from == base) {
     81 		    to = make_object(Torp, '+', from->posy,from->posx,
     82 			from->vely+ydir,from->velx+xdir, 0L, 1L,&root);
     83 		    aretorps++;
     84 		    isatorp[1][ydir+1][xdir+1] = to;
     85 		    btorp--;
     86 		}
     87 		else if (from->image == 'G') {
     88 		    numos++;
     89 		    to = make_object(Torp, 'o', from->posy,from->posx,
     90 			from->vely+ydir,from->velx+xdir, 100L, 1L,&root);
     91 		    if (madgorns) {
     92 			possiblescore += 35;
     93 			to->image = '0';
     94 			to->mass = 2000;
     95 			to->energy = 2000;
     96 		    }
     97 		    else if (rand_mod(120)+10 > smarts)
     98 			possiblescore += 100;
     99 		    else {
    100 			possiblescore += 200;
    101 			to->image = 'O';
    102 		    }
    103 		}
    104 		else {
    105 		    to = make_object(Torp, 'x', from->posy,from->posx,
    106 			from->vely+ydir,from->velx+xdir, 0L, 1L,&root);
    107 		    if (rand_mod(160)+10 > smarts)
    108 			possiblescore += 10;
    109 		    else {
    110 			possiblescore += 100;
    111 			to->image = 'X';
    112 			to->mass = 1000+super*20;
    113 			numxes++;
    114 		    }
    115 		}
    116 	    }
    117 	}
    118     }
    119 }
    120 
    121 void
    122 attack(attackee)
    123 Reg7 OBJECT *attackee;
    124 {
    125     Reg1 int dx;
    126     Reg2 int dy;
    127     Reg3 int curx;
    128     Reg4 int cury;
    129     Reg5 int prob;
    130     Reg6 OBJECT *obj;
    131     Reg8 bool torps;
    132     Reg9 bool webnear = FALSE;
    133     Reg10 bool thru_stars;
    134     int nukey;
    135     int nukex;
    136     int nukedist;
    137 
    138     if (attackee) {
    139 	if (attackee == nuke) {
    140 	    if (amb[attackee->posy][attackee->posx] != '~')
    141 		return;
    142 	    nukey = nukex = 0;
    143 	    nukedist = 100;
    144 	}
    145 	for (dx= -1; dx<=1 ; dx++) {
    146 	    for (dy= -1; dy<=1; dy++) {
    147 		if (dx||dy) {
    148 		    cury = attackee->posy;
    149 		    curx = attackee->posx;
    150 		    torps = thru_stars = FALSE;
    151 		    if (massacre || madgorns || !rand_mod(53-super) )
    152 			webnear += rand_mod(2);
    153 		    else
    154 			webnear = FALSE;
    155 		    for (prob = scandist;prob;prob--) {
    156 			cury = (cury + dy + YSIZE00) % YSIZE;
    157 			curx = (curx + dx + XSIZE00) % XSIZE;
    158 			if (obj = occupant[cury][curx]) {
    159 			    switch (obj->image) {
    160 			    case 'P': case 'K': case 'R': case ' ':
    161 		pot_shot:
    162 				if (attackee == nuke) {
    163 				    if (rand_mod(2+scandist-prob) <
    164 				      rand_mod(smarts/40+1))
    165 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    166 				}
    167 				if (rand_mod(51 - sm50) <= prob) {
    168 				    switch (obj->strategy||thru_stars?0:
    169 					  rand_mod(ent?4:2)) {
    170 				    case 1: case 2:
    171 					if (-dy + attackee->vely == obj->vely
    172 					 && -dx + attackee->velx == obj->velx)
    173 					    fire_torp(obj,
    174 					     -dy + attackee->vely,
    175 					     -dx + attackee->velx);
    176 					else
    177 					    fire_torp(obj,
    178 					     -dy + attackee->vely - obj->vely,
    179 					     -dx + attackee->velx - obj->velx);
    180 					if (obj->image == ' ')
    181 					    setimage(obj,
    182 					      obj->flags & PIRATE ? 'P' : 'R');
    183 					break;
    184 				    case 3: {
    185 					int newspeed =
    186 					    rand_mod(prob<5&&smarts>70?4:3)-1;
    187 
    188 					obj->vely = -dy * newspeed;
    189 					obj->velx = -dx * newspeed;
    190 					if (newspeed >= 0 &&
    191 					    !rand_mod(82-sm80)) {
    192 					    obj->vely += attackee->vely;
    193 					    obj->velx += attackee->velx;
    194 					}
    195 					break;
    196 				    }
    197 				    case 0:
    198 					if (!torps && obj->energy > 1000) {
    199 					    fire_phaser(obj, -dy, -dx);
    200 					    if (smarts > 40 &&
    201 					       (scandist-prob > 5
    202 						|| attackee==base) &&
    203 					       (massacre || obj->strategy ||
    204 					        rand_mod(2)))
    205 						while (rand_mod(2))
    206 						    fire_phaser(obj, -dy, -dx);
    207 					    if (obj->image == ' ')
    208 						setimage(obj,
    209 						  obj->flags&PIRATE ? 'P':'R');
    210 					}
    211 					if (obj->strategy) {
    212 					    obj->velx = obj->vely = 0;
    213 					    if (obj->energy < 1000 ||
    214 						  bvely || bvelx)
    215 						obj->strategy = 0;
    216 					}
    217 					else if ((attackee==base ||
    218 						  (cloaking && attackee==ent)
    219 						 ) &&
    220 						 scandist-prob > 5 &&
    221 					         !(rand_mod(
    222 						   ent?antibase*2:antibase)) )
    223 					    obj->strategy = 1;
    224 					break;
    225 				    }
    226 				}
    227 				goto bombout;
    228 			    case 'G':
    229 				if (thru_stars && obj->strategy < 7)
    230 				    goto bombout;
    231 				if (attackee == nuke) {
    232 				    if (rand_mod(2+scandist-prob) <
    233 				      rand_mod(smarts/40+1))
    234 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    235 				    goto bombout;
    236 				}
    237 				if (obj->strategy) {
    238 				    if (madgorns || !rand_mod(4)) {
    239 					obj->vely = attackee->vely;
    240 					obj->velx = attackee->velx;
    241 				    }
    242 				    obj->strategy += (!torps && deados > 10);
    243 				    if (obj->strategy > 4)
    244 					madgorns = TRUE;
    245 				    if (!torps && obj->strategy > 5) {
    246 					do {
    247 					    fire_phaser(obj, -dy, -dx);
    248 					} while (rand_mod(2));
    249 				    }
    250 				}
    251 				else if (numgorns >= numenemies-1 &&
    252 				    deados > 15+numgorns*5)
    253 				    obj->strategy = 1;
    254 				if (madgorns || rand_mod(51 - sm50) <= prob) {
    255 				    if (-dy + attackee->vely == obj->vely
    256 				     && -dx + attackee->velx == obj->velx)
    257 					fire_torp(obj,
    258 					 -dy + attackee->vely,
    259 					 -dx + attackee->velx);
    260 				    else
    261 					fire_torp(obj,
    262 					 -dy + attackee->vely - obj->vely,
    263 					 -dx + attackee->velx - obj->velx);
    264 				}
    265 				goto bombout;
    266 			    case 'T':
    267 				if (attackee == nuke) {
    268 				    if (rand_mod(2+scandist-prob) <
    269 				      rand_mod(smarts/40+1))
    270 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    271 				}
    272 				if (thru_stars)
    273 				    goto bombout;
    274 				if (webnear && scandist-prob > 5) {
    275 				    if (massacre || rand_mod(50) < super) {
    276 					if (!torps && obj->energy > 1000) {
    277 					    fire_phaser(obj, -dy, -dx);
    278 					    while (!rand_mod(57-sm55))
    279 						fire_phaser(obj, -dy, -dx);
    280 					}
    281 				    }
    282 				}
    283 				goto bombout;
    284 			    case 'C': case 'c':
    285 				if (thru_stars)
    286 				    goto bombout;
    287 				break;
    288 			    case 'Q': case 'W': case 'Y': case 'U':
    289 			    case 'I': case 'S': case 'D': case 'H': case 'J':
    290 			    case 'L': case 'Z': case 'V': case 'M': case 'F':
    291 				if (attackee == nuke) {
    292 				    if (rand_mod(2+scandist-prob) <
    293 				      rand_mod(smarts/40+1))
    294 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    295 				    if (rand_mod(2))
    296 					goto pot_shot;
    297 				}
    298 				if (madfriends > 1000) {
    299 				    madfriends -= 200;
    300 				    goto pot_shot;
    301 				}
    302 				/* FALL THROUGH */
    303 			    case '+':
    304 				if (attackee == nuke) {
    305 				    if (smarts > 70) {
    306 					if (
    307 					 (obj->posx + obj->velx + XSIZE00)%XSIZE
    308 					    == attackee->posx &&
    309 					 (obj->posy + obj->vely + YSIZE00)%YSIZE
    310 					    == attackee->posy ) {
    311 					    Tract(nuke,dy,dx,-1);
    312 					}
    313 					else
    314 					    while (!rand_mod(82-sm80))
    315 						Tract(nuke,dy,dx,-1);
    316 				    }
    317 				    else if (smarts > 60 ||
    318 				      rand_mod(2+scandist-prob) <
    319 				      rand_mod(smarts/20+1))
    320 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    321 				}
    322 				torps = FALSE;
    323 				thru_stars = FALSE;
    324 				break;
    325 			    case '|': case '-': case '/': case '\\':
    326 				if (thru_stars)
    327 				    goto bombout;
    328 				webnear = (scandist-prob < 3);
    329 				torps = FALSE;
    330 				break;
    331 			    case 'x':
    332 				if (attackee == nuke) {
    333 				    if (rand_mod(2+scandist-prob) <
    334 				      rand_mod(smarts/20+1))
    335 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    336 				}
    337 				if (thru_stars)
    338 				    goto bombout;
    339 				torps = TRUE;
    340 				break;
    341 			    case 'o': case 'O': case '0':
    342 				if (attackee == nuke) {
    343 				    if (rand_mod(2+scandist-prob) <
    344 				      rand_mod(smarts/20+1))
    345 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    346 				}
    347 				if (thru_stars)
    348 				    goto bombout;
    349 				torps = TRUE;
    350 				if (rand_mod(99+3*scandist) < smarts+3*prob) {
    351 				    obj->vely = -dy + attackee->vely;
    352 				    obj->velx = -dx + attackee->velx;
    353 				    if (obj->flags & STATIC) {/* not a mover? */
    354 					obj->flags &= ~STATIC;
    355 					obj->prev->next = obj->next;
    356 					obj->next->prev = obj->prev;
    357 					root.prev->next = obj;
    358 					obj->prev = root.prev;
    359 					root.prev = obj;
    360 					obj->next = &root;
    361 				    }
    362 				}
    363 				if (obj->image != '0')
    364 				    break;
    365 			    /* DROP THROUGH! */
    366 			    case 'X':
    367 				if (attackee == nuke) {
    368 				    if (rand_mod(2+scandist-prob) <
    369 				      rand_mod(smarts/20+1))
    370 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    371 				}
    372 				torps = TRUE;
    373 				if (thru_stars)
    374 				    goto bombout;
    375 				if (prob == scandist) {
    376 				    int y, x;
    377 
    378 				    blast[y=(obj->posy+obj->vely+YSIZE00)%YSIZE]
    379 					 [x=(obj->posx+obj->velx+XSIZE00)%XSIZE]
    380 				      += (obj->image == '0' ? 2000 : 200);
    381 				    yblasted[y] |= 1;
    382 				    xblasted[x] |= 1;
    383 				    blasted = TRUE;
    384 				}
    385 				break;
    386 			    case 'A':
    387 				if (attackee != nuke) {
    388 				    if (scandist-prob>1 && !rand_mod(51-super))
    389 					Tract(obj,-dy,-dx,1);
    390 				}
    391 				/* FALL THROUGH */
    392 			    case '*': case '@':
    393 				if (attackee == nuke) {
    394 				    if (amb[cury][curx] != '~') {
    395 					if (scandist-prob < nukedist) {
    396 					    nukedist = scandist-prob;
    397 					    nukey = dy;	/* nearest food in */
    398 					    nukex = dx;	/*   this direction */
    399 					}
    400 					if (smarts > 55 && scandist-prob > 8) {
    401 					    if (rand_mod(30+scandist-prob) <
    402 					      rand_mod(smarts/20+1))
    403 						Tract(nuke,dy,dx,1);
    404 					}
    405 				    }
    406 				    else if (obj->vely || obj->velx) {
    407 					Tract(nuke,dy,dx,1); /* for looks */
    408 					obj->vely = obj->velx = 0;
    409 				    }
    410 				}
    411 				if (!thru_stars)
    412 				    if (rand_mod(97-sm95))
    413 					goto bombout;
    414 				    else
    415 					thru_stars = TRUE;
    416 				break;
    417 			    case '<': case '>':
    418 				if (attackee == nuke) {
    419 				    if ((!dy && scandist-prob < 8) ||
    420 				      rand_mod(2+scandist-prob) <
    421 				      rand_mod(smarts/20+1) ) {
    422 					nuke->mass += 10000;
    423 					Tract(nuke,dy,dx,-1);
    424 					nuke->mass -= 10000;
    425 				    }
    426 				}
    427 				goto bombout;
    428 			    case 'E': case 'B':
    429 				if (attackee == nuke) {
    430 				    if (rand_mod(2+scandist-prob) <
    431 				      rand_mod(smarts/40+1))
    432 					Tract(nuke,dy,dx,rand_mod(3)?1:-1);
    433 				}
    434 				goto bombout;
    435 			    default:
    436 				goto bombout;
    437 			    }
    438 			}
    439 			else {
    440 			    if (thru_stars)
    441 				goto bombout;
    442 			}
    443 		    }
    444 bombout:            ; /* end of loop */
    445 		}
    446 	    }
    447 	}
    448 	if (attackee == nuke && nukedist < 100) {/* aim amoeba at nearest */
    449 	    if (nukey < 0)			/*   free star */
    450 		nukey = 2;
    451 	    if (nukex < 0)
    452 		nukex = 2;
    453 	    nuke->strategy = nukey + (nukex << 2);
    454 	}
    455     }
    456 }
    457 
    458 void
    459 fire_phaser(obj, dy, dx)
    460 Reg7 OBJECT *obj;
    461 Reg5 int dy;
    462 Reg6 int dx;
    463 {
    464     Reg1 int y;
    465     Reg2 int x;
    466     Reg3 int skipping;
    467     Reg4 int size=5000;
    468     int decr = 50, oldy, oldx;
    469     static char curchar[] = "@* ";
    470 
    471     if (obj == ent)
    472 	decr = 100;
    473     else if (obj == base) {
    474 	decr = 1000;
    475 	size = 200;
    476     }
    477     if (!dy)
    478 	curchar[2] = '-';
    479     else if (!dx)
    480 	curchar[2] = '!';
    481     else if (dy == dx)
    482 	curchar[2] = '\\';
    483     else
    484 	curchar[2] = '/';
    485     if (obj->energy >= decr) {
    486 	obj->energy -= decr;
    487 	for (
    488 	  /* initialize */
    489 	  skipping = (obj != base),
    490 	  y = (obj->posy+(obj==base?dy*2:dy)+YSIZE00)%YSIZE,
    491 	  x = (obj->posx+(obj==base?dx*2:dx)+XSIZE00)%XSIZE;
    492 	  /* while */
    493 	  size && (!occupant[y][x]||(skipping && occupant[y][x]->type==Star));
    494 	  /* at end of loop */
    495 	  y = (y+dy+YSIZE00) % YSIZE,
    496 	  x = (x+dx+XSIZE00) % XSIZE,
    497 	  size = size * 3 / 4 ) {
    498 	    move(y+1,x*2,0);
    499 	    beg_qwrite();
    500 	    if (obj == base || obj->image == 'T') {
    501 		*filler = '@';
    502 		qwrite();
    503 		*filler = '#';
    504 		qwrite();
    505 		*filler = '~';
    506 		qwrite();
    507 		*filler = '%';
    508 		qwrite();
    509 		*filler = ':';
    510 		qwrite();
    511 		*filler = '@';
    512 	    }
    513 	    else {
    514 		*filler = size >= 500 ?
    515 			  *curchar : (size >= 50 ?
    516 				     curchar[1] :
    517 				     curchar[2]);
    518 	    }
    519 	    qwrite();
    520 	    if (occupant[y][x])
    521 		qaddc(occupant[y][x]->image);
    522 	    else {
    523 		if (numamoebas)
    524 		    qaddc(amb[y][x]);
    525 		else
    526 		    qaddspace();
    527 		if (skipping)
    528 		    skipping = 0;
    529 	    }
    530 	    end_qwrite();
    531 	}
    532 	if (size) {
    533 	    char img;
    534 
    535 	    assert(occupant[y][x]);
    536 	    img = occupant[y][x]->image;
    537 	    if (occupant[y][x]->type == Crusher) {
    538 		if (dy)
    539 		    return;
    540 	        if (dx==(img == '<' ? 1 : -1) ) {
    541 		    occupant[y][x]->image =
    542 			(occupant[y][x]->velx *= -1) < 0 ? '>' : '<';
    543 		    return;
    544 		}
    545 	    }
    546 	    else if (occupant[y][x]->flags & FRIENDLY)
    547 		madfriends += 200;
    548 	    if (numamoebas && amb[y][x] == '~' && smarts % 3 &&
    549 		(smarts > 70 || rand_mod(smarts) > rand_mod(20)) ) {
    550 		if (size > 10000)
    551 		    modify_amoeba(y,x,1,'~',10);
    552 		else if (size > 1000)
    553 		    modify_amoeba(y,x,1,'~',7);
    554 		else if (size > 50)
    555 		    modify_amoeba(y,x,1,'~',5);
    556 		else
    557 		    modify_amoeba(y,x,1,'~',2);
    558 		if (occupant[y][x] == nuke) {
    559 		    nuke->strategy = rand_mod(30);
    560 		    nuke->flags |= COUNTDOWN;
    561 		}
    562 		return;
    563 	    }
    564 	    else {
    565 		move(y+1,x*2,0);
    566 		beg_qwrite();
    567 		if (img == ' ') {
    568 		    *filler = occupant[y][x]->flags & PIRATE ? 'P' : 'R';
    569 		    occupant[y][x]->image = *filler;
    570 		    occupant[y][x]->strategy = 0;
    571 		    qwrite();
    572 		    qwrite();
    573 		}
    574 		else if (img == 'C' || img == 'c') {
    575 		    cloaked = 0;
    576 		    img += 2;
    577 		    occupant[y][x]->image = img;
    578 		    *filler = img;
    579 		    qwrite();
    580 		    qwrite();
    581 		}
    582 		else if (img == 'K' && size > 50)
    583 		    occupant[y][x]->strategy = 0;
    584 		*filler = '@';
    585 		qwrite();
    586 		*filler = '#';
    587 		qwrite();
    588 		*filler = '@';
    589 		qwrite();
    590 		*filler = '#';
    591 		qwrite();
    592 		*filler = '@';
    593 		qwrite();
    594 		qaddc(img);
    595 		end_qwrite();
    596 		oldy = y;
    597 		oldx = x;
    598 		y = (occupant[oldy][oldx]->posy + occupant[oldy][oldx]->vely +
    599 			YSIZE00) % YSIZE;
    600 		x = (occupant[oldy][oldx]->posx + occupant[oldy][oldx]->velx +
    601 			XSIZE00) % XSIZE;
    602 		if (occupant[y][x] && occupant[y][x]->type == Star) {
    603 		    y = occupant[oldy][oldx]->posy;
    604 		    x = occupant[oldy][oldx]->posx;
    605 		}
    606 		if (obj==base)
    607 		    blast[y][x] += size>50 ? 15000 : (size>15 ? 1500 : 150);
    608 		else if (obj==ent)
    609 		    blast[y][x] += size*4;
    610 		else if (obj->image=='T')
    611 		    blast[y][x] += 15000;
    612 		else
    613 		    blast[y][x] += size*smarts/25;
    614 		yblasted[y] |= 1;
    615 		xblasted[x] |= 1;
    616 		blasted = TRUE;
    617 	    }
    618 	}
    619     }
    620 }
    621 
    622 int
    623 tract(obj, dy, dx, to_or_fro)
    624 Reg7 OBJECT *obj;
    625 Reg4 int dy;
    626 Reg5 int dx;
    627 int to_or_fro;
    628 {
    629     Reg1 int y;
    630     Reg2 int x;
    631     Reg3 int size=10;
    632     static char ch;
    633     Reg6 OBJECT *tractee;
    634 
    635     if (!dy)
    636 	ch = '|';
    637     else if (!dx)
    638 	ch = '-';
    639     else if (dy == dx)
    640 	ch = '/';
    641     else
    642 	ch = '\\';
    643     {
    644 	for (
    645 	  y = (obj->posy+dy+YSIZE00)%YSIZE,
    646 	  x = (obj->posx+dx+XSIZE00)%XSIZE;
    647 	  size && (!occupant[y][x]);
    648 	  y = (y+dy+YSIZE00) % YSIZE, x = (x+dx+XSIZE00) % XSIZE, size--) {
    649 	    move(y+1,x*2,0);
    650 	    beg_qwrite();
    651 	    *filler = ch;
    652 	    qwrite();
    653 	    qwrite();
    654 	    if (numamoebas)
    655 		qaddch(amb[y][x]);
    656 	    else
    657 		qaddspace();
    658 	    end_qwrite();
    659 	}
    660 	tractee = occupant[y][x];
    661 	if (size) {
    662 	    assert(tractee);
    663 	    if (numamoebas && obj != nuke && amb[y][x] == '~') {
    664 		if (to_or_fro > 0)
    665 		    modify_amoeba(y,x,2,'~',size);
    666 		else
    667 		    modify_amoeba(y,x,1,' ',size);
    668 	    }
    669 	    if (tractee->type != Web &&
    670 		(tractee->mass < obj->mass * 5 ||
    671 		 (tractee->type == Crusher && !dx) ) ) {
    672 		if (tractee == ent) {
    673 		    evely -= dy * to_or_fro;
    674 		    evelx -= dx * to_or_fro;
    675 		}
    676 		else if (tractee == base) {
    677 		    bvely -= dy * to_or_fro;
    678 		    bvelx -= dx * to_or_fro;
    679 		}
    680 		else {
    681 		    tractee->vely -= dy * to_or_fro;
    682 		    tractee->velx -= dx * to_or_fro;
    683 		}
    684 		if (tractee->type == Torp ||
    685 		    tractee->type == Star) {
    686 		    if (tractee->flags & STATIC) {  /* not a mover? */
    687 			tractee->flags &= ~STATIC;
    688 			tractee->prev->next = tractee->next;
    689 			tractee->next->prev = tractee->prev;
    690 			root.prev->next = tractee;
    691 			tractee->prev = root.prev;
    692 			root.prev = tractee;
    693 			tractee->next = &root;
    694 		    }
    695 		}
    696 	    }
    697 	    else if (tractee->type == Crusher && !dy &&
    698 	      dx==(tractee->image == '<' ? 1 : -1) ) {
    699 		setimage(tractee, (tractee->velx *= -1) < 0 ? '>' : '<');
    700 	    }
    701 	    if (tractee->mass * 5 > obj->mass)
    702 		return(1);
    703 	}
    704     }
    705     return(0);
    706 }
    707