xref: /original-bsd/games/trek/kill.c (revision 4ec22e22)
1 /*
2  * Copyright (c) 1980 Regents of the University of California.
3  * All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #ifndef lint
9 static char sccsid[] = "@(#)kill.c	5.4 (Berkeley) 06/01/90";
10 #endif /* not lint */
11 
12 # include	"trek.h"
13 
14 /*
15 **  KILL KILL KILL !!!
16 **
17 **	This file handles the killing off of almost anything.
18 */
19 
20 /*
21 **  Handle a Klingon's death
22 **
23 **	The Klingon at the sector given by the parameters is killed
24 **	and removed from the Klingon list.  Notice that it is not
25 **	removed from the event list; this is done later, when the
26 **	the event is to be caught.  Also, the time left is recomputed,
27 **	and the game is won if that was the last klingon.
28 */
29 
30 killk(ix, iy)
31 int	ix, iy;
32 {
33 	register int		i, j;
34 
35 	printf("   *** Klingon at %d,%d destroyed ***\n", ix, iy);
36 
37 	/* remove the scoundrel */
38 	Now.klings -= 1;
39 	Sect[ix][iy] = EMPTY;
40 	Quad[Ship.quadx][Ship.quady].klings -= 1;
41 	/* %%% IS THIS SAFE???? %%% */
42 	Quad[Ship.quadx][Ship.quady].scanned -= 100;
43 	Game.killk += 1;
44 
45 	/* find the Klingon in the Klingon list */
46 	for (i = 0; i < Etc.nkling; i++)
47 		if (ix == Etc.klingon[i].x && iy == Etc.klingon[i].y)
48 		{
49 			/* purge him from the list */
50 			Etc.nkling -= 1;
51 			for (; i < Etc.nkling; i++)
52 				bmove(&Etc.klingon[i+1], &Etc.klingon[i], sizeof Etc.klingon[i]);
53 			break;
54 		}
55 
56 	/* find out if that was the last one */
57 	if (Now.klings <= 0)
58 		win();
59 
60 	/* recompute time left */
61 	Now.time = Now.resource / Now.klings;
62 	return;
63 }
64 
65 
66 /*
67 **  handle a starbase's death
68 */
69 
70 killb(qx, qy)
71 int	qx, qy;
72 {
73 	register struct quad	*q;
74 	register struct xy	*b;
75 
76 	q = &Quad[qx][qy];
77 
78 	if (q->bases <= 0)
79 		return;
80 	if (!damaged(SSRADIO))
81 		/* then update starchart */
82 		if (q->scanned < 1000)
83 			q->scanned -= 10;
84 		else
85 			if (q->scanned > 1000)
86 				q->scanned = -1;
87 	q->bases = 0;
88 	Now.bases -= 1;
89 	for (b = Now.base; ; b++)
90 		if (qx == b->x && qy == b->y)
91 			break;
92 	bmove(&Now.base[Now.bases], b, sizeof *b);
93 	if (qx == Ship.quadx && qy == Ship.quady)
94 	{
95 		Sect[Etc.starbase.x][Etc.starbase.y] = EMPTY;
96 		if (Ship.cond == DOCKED)
97 			undock();
98 		printf("Starbase at %d,%d destroyed\n", Etc.starbase.x, Etc.starbase.y);
99 	}
100 	else
101 	{
102 		if (!damaged(SSRADIO))
103 		{
104 			printf("Uhura: Starfleet command reports that the starbase in\n");
105 			printf("   quadrant %d,%d has been destroyed\n", qx, qy);
106 		}
107 		else
108 			schedule(E_KATSB | E_GHOST, 1e50, qx, qy, 0);
109 	}
110 }
111 
112 
113 /**
114  **	kill an inhabited starsystem
115  **/
116 
117 kills(x, y, f)
118 int	x, y;	/* quad coords if f == 0, else sector coords */
119 int	f;	/* f != 0 -- this quad;  f < 0 -- Enterprise's fault */
120 {
121 	register struct quad	*q;
122 	register struct event	*e;
123 	register char		*name;
124 	char			*systemname();
125 
126 	if (f)
127 	{
128 		/* current quadrant */
129 		q = &Quad[Ship.quadx][Ship.quady];
130 		Sect[x][y] = EMPTY;
131 		name = systemname(q);
132 		if (name == 0)
133 			return;
134 		printf("Inhabited starsystem %s at %d,%d destroyed\n",
135 			name, x, y);
136 		if (f < 0)
137 			Game.killinhab += 1;
138 	}
139 	else
140 	{
141 		/* different quadrant */
142 		q = &Quad[x][y];
143 	}
144 	if (q->qsystemname & Q_DISTRESSED)
145 	{
146 		/* distressed starsystem */
147 		e = &Event[q->qsystemname & Q_SYSTEM];
148 		printf("Distress call for %s invalidated\n",
149 			Systemname[e->systemname]);
150 		unschedule(e);
151 	}
152 	q->qsystemname = 0;
153 	q->stars -= 1;
154 }
155 
156 
157 /**
158  **	"kill" a distress call
159  **/
160 
161 killd(x, y, f)
162 int	x, y;		/* quadrant coordinates */
163 int	f;		/* set if user is to be informed */
164 {
165 	register struct event	*e;
166 	register int		i;
167 	register struct quad	*q;
168 
169 	q = &Quad[x][y];
170 	for (i = 0; i < MAXEVENTS; i++)
171 	{
172 		e = &Event[i];
173 		if (e->x != x || e->y != y)
174 			continue;
175 		switch (e->evcode)
176 		{
177 		  case E_KDESB:
178 			if (f)
179 			{
180 				printf("Distress call for starbase in %d,%d nullified\n",
181 					x, y);
182 				unschedule(e);
183 			}
184 			break;
185 
186 		  case E_ENSLV:
187 		  case E_REPRO:
188 			if (f)
189 			{
190 				printf("Distress call for %s in quadrant %d,%d nullified\n",
191 					Systemname[e->systemname], x, y);
192 				q->qsystemname = e->systemname;
193 				unschedule(e);
194 			}
195 			else
196 			{
197 				e->evcode |= E_GHOST;
198 			}
199 		}
200 	}
201 }
202