xref: /dragonfly/games/trek/kill.c (revision ce0e08e2)
1 /*
2  * Copyright (c) 1980, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  * @(#)kill.c	8.1 (Berkeley) 5/31/93
34  * $FreeBSD: src/games/trek/kill.c,v 1.4 1999/11/30 03:49:49 billf Exp $
35  * $DragonFly: src/games/trek/kill.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
36  */
37 
38 # include	"trek.h"
39 
40 /*
41 **  KILL KILL KILL !!!
42 **
43 **	This file handles the killing off of almost anything.
44 */
45 
46 /*
47 **  Handle a Klingon's death
48 **
49 **	The Klingon at the sector given by the parameters is killed
50 **	and removed from the Klingon list.  Notice that it is not
51 **	removed from the event list; this is done later, when the
52 **	the event is to be caught.  Also, the time left is recomputed,
53 **	and the game is won if that was the last klingon.
54 */
55 
56 void
57 killk(int ix, int iy)
58 {
59 	int		i;
60 
61 	printf("   *** Klingon at %d,%d destroyed ***\n", ix, iy);
62 
63 	/* remove the scoundrel */
64 	Now.klings -= 1;
65 	Sect[ix][iy] = EMPTY;
66 	Quad[Ship.quadx][Ship.quady].klings -= 1;
67 	/* %%% IS THIS SAFE???? %%% */
68 	Quad[Ship.quadx][Ship.quady].scanned -= 100;
69 	Game.killk += 1;
70 
71 	/* find the Klingon in the Klingon list */
72 	for (i = 0; i < Etc.nkling; i++)
73 		if (ix == Etc.klingon[i].x && iy == Etc.klingon[i].y)
74 		{
75 			/* purge him from the list */
76 			Etc.nkling -= 1;
77 			for (; i < Etc.nkling; i++)
78 				bmove(&Etc.klingon[i+1], &Etc.klingon[i], sizeof Etc.klingon[i]);
79 			break;
80 		}
81 
82 	/* find out if that was the last one */
83 	if (Now.klings <= 0)
84 		win();
85 
86 	/* recompute time left */
87 	Now.time = Now.resource / Now.klings;
88 	return;
89 }
90 
91 
92 /*
93 **  handle a starbase's death
94 */
95 
96 void
97 killb(int qx, int qy)
98 {
99 	struct quad	*q;
100 	struct xy	*b;
101 
102 	q = &Quad[qx][qy];
103 
104 	if (q->bases <= 0)
105 		return;
106 	if (!damaged(SSRADIO))
107 	{
108 		/* then update starchart */
109 		if (q->scanned < 1000)
110 			q->scanned -= 10;
111 		else
112 			if (q->scanned > 1000)
113 				q->scanned = -1;
114 	}
115 	q->bases = 0;
116 	Now.bases -= 1;
117 	for (b = Now.base; ; b++)
118 		if (qx == b->x && qy == b->y)
119 			break;
120 	bmove(&Now.base[Now.bases], b, sizeof *b);
121 	if (qx == Ship.quadx && qy == Ship.quady)
122 	{
123 		Sect[Etc.starbase.x][Etc.starbase.y] = EMPTY;
124 		if (Ship.cond == DOCKED)
125 			undock(0);
126 		printf("Starbase at %d,%d destroyed\n", Etc.starbase.x, Etc.starbase.y);
127 	}
128 	else
129 	{
130 		if (!damaged(SSRADIO))
131 		{
132 			printf("Uhura: Starfleet command reports that the starbase in\n");
133 			printf("   quadrant %d,%d has been destroyed\n", qx, qy);
134 		}
135 		else
136 			schedule(E_KATSB | E_GHOST, 1e50, qx, qy, 0);
137 	}
138 }
139 
140 
141 /**
142  **	kill an inhabited starsystem
143  **/
144 
145 void
146 kills(int x, int y, int f)
147 /* x,y:  quad coords if f == 0, else sector coords */
148 /* f != 0 -- this quad;  f < 0 -- Enterprise's fault */
149 {
150 	struct quad	*q;
151 	struct event	*e;
152 	const char	*name;
153 
154 	if (f)
155 	{
156 		/* current quadrant */
157 		q = &Quad[Ship.quadx][Ship.quady];
158 		Sect[x][y] = EMPTY;
159 		name = systemname(q);
160 		if (name == 0)
161 			return;
162 		printf("Inhabited starsystem %s at %d,%d destroyed\n",
163 			name, x, y);
164 		if (f < 0)
165 			Game.killinhab += 1;
166 	}
167 	else
168 	{
169 		/* different quadrant */
170 		q = &Quad[x][y];
171 	}
172 	if (q->qsystemname & Q_DISTRESSED)
173 	{
174 		/* distressed starsystem */
175 		e = &Event[q->qsystemname & Q_SYSTEM];
176 		printf("Distress call for %s invalidated\n",
177 			Systemname[e->systemname]);
178 		unschedule(e);
179 	}
180 	q->qsystemname = 0;
181 	q->stars -= 1;
182 }
183 
184 
185 /**
186  **	"kill" a distress call
187  **/
188 
189 void
190 killd(int x, int y, int f)
191 /* x,y:  quadrant coordinates */
192 /* f:  set if user is to be informed */
193 {
194 	struct event	*e;
195 	int		i;
196 	struct quad	*q;
197 
198 	q = &Quad[x][y];
199 	for (i = 0; i < MAXEVENTS; i++)
200 	{
201 		e = &Event[i];
202 		if (e->x != x || e->y != y)
203 			continue;
204 		switch (e->evcode)
205 		{
206 		  case E_KDESB:
207 			if (f)
208 			{
209 				printf("Distress call for starbase in %d,%d nullified\n",
210 					x, y);
211 				unschedule(e);
212 			}
213 			break;
214 
215 		  case E_ENSLV:
216 		  case E_REPRO:
217 			if (f)
218 			{
219 				printf("Distress call for %s in quadrant %d,%d nullified\n",
220 					Systemname[e->systemname], x, y);
221 				q->qsystemname = e->systemname;
222 				unschedule(e);
223 			}
224 			else
225 			{
226 				e->evcode |= E_GHOST;
227 			}
228 		}
229 	}
230 }
231