Commit | Line | Data |
---|---|---|
b5f0675e | 1 | /* |
1e008c14 | 2 | * Copyright (c) 1983 Regents of the University of California. |
c0ca48ec KB |
3 | * All rights reserved. |
4 | * | |
b2e7427f | 5 | * %sccs.include.redist.c% |
b5f0675e EW |
6 | */ |
7 | ||
717de9f0 | 8 | #ifndef lint |
b2e7427f | 9 | static char sccsid[] = "@(#)dr_2.c 5.4 (Berkeley) %G%"; |
c0ca48ec | 10 | #endif /* not lint */ |
717de9f0 | 11 | |
b3a57661 EW |
12 | #include "driver.h" |
13 | ||
14 | #define couldwin(f,t) (f->specs->crew2 > t->specs->crew2 * 1.5) | |
717de9f0 CL |
15 | |
16 | thinkofgrapples() | |
17 | { | |
b3a57661 EW |
18 | register struct ship *sp, *sq; |
19 | char friendly; | |
717de9f0 | 20 | |
b3a57661 EW |
21 | foreachship(sp) { |
22 | if (sp->file->captain[0] || sp->file->dir == 0) | |
23 | continue; | |
24 | foreachship(sq) { | |
25 | friendly = sp->nationality == capship(sq)->nationality; | |
26 | if (!friendly) { | |
27 | if (sp->file->struck || sp->file->captured != 0) | |
28 | continue; | |
29 | if (range(sp, sq) != 1) | |
30 | continue; | |
31 | if (grappled2(sp, sq)) | |
32 | if (toughmelee(sp, sq, 0, 0)) | |
33 | ungrap(sp, sq); | |
34 | else | |
35 | grap(sp, sq); | |
36 | else if (couldwin(sp, sq)) { | |
37 | grap(sp, sq); | |
38 | sp->file->loadwith = L_GRAPE; | |
717de9f0 | 39 | } |
b3a57661 EW |
40 | } else |
41 | ungrap(sp, sq); | |
717de9f0 CL |
42 | } |
43 | } | |
44 | } | |
45 | ||
717de9f0 CL |
46 | checkup() |
47 | { | |
b3a57661 EW |
48 | register struct ship *sp, *sq; |
49 | register char explode, sink; | |
717de9f0 | 50 | |
b3a57661 | 51 | foreachship(sp) { |
8b4ea3df EW |
52 | if (sp->file->dir == 0) |
53 | continue; | |
b3a57661 EW |
54 | explode = sp->file->explode; |
55 | sink = sp->file->sink; | |
b3a57661 EW |
56 | if (explode != 1 && sink != 1) |
57 | continue; | |
8b4ea3df EW |
58 | if (die() < 5) |
59 | continue; | |
60 | Write(sink == 1 ? W_SINK : W_EXPLODE, sp, 0, 2, 0, 0, 0); | |
6ca45914 EW |
61 | Write(W_DIR, sp, 0, 0, 0, 0, 0); |
62 | if (snagged(sp)) | |
63 | foreachship(sq) | |
64 | cleansnag(sp, sq, 1); | |
b3a57661 EW |
65 | if (sink != 1) { |
66 | makesignal(sp, "exploding!", (struct ship *)0); | |
67 | foreachship(sq) { | |
68 | if (sp != sq && sq->file->dir && range(sp, sq) < 4) | |
69 | table(RIGGING, L_EXPLODE, sp->specs->guns/13, sq, sp, 6); | |
70 | } | |
71 | } else | |
72 | makesignal(sp, "sinking!", (struct ship *)0); | |
717de9f0 CL |
73 | } |
74 | } | |
75 | ||
76 | prizecheck() | |
77 | { | |
b3a57661 | 78 | register struct ship *sp; |
717de9f0 | 79 | |
b3a57661 EW |
80 | foreachship(sp) { |
81 | if (sp->file->captured == 0) | |
82 | continue; | |
83 | if (sp->file->struck || sp->file->dir == 0) | |
84 | continue; | |
0483f58f | 85 | if (sp->specs->crew1 + sp->specs->crew2 + sp->specs->crew3 > sp->file->pcrew * 6) { |
b3a57661 EW |
86 | Write(W_SIGNAL, sp, 1, |
87 | (int)"prize crew overthrown", 0, 0, 0); | |
0483f58f EW |
88 | Write(W_POINTS, sp->file->captured, 0, sp->file->captured->file->points - 2 * sp->specs->pts, 0, 0, 0); |
89 | Write(W_CAPTURED, sp, 0, -1, 0, 0, 0); | |
717de9f0 CL |
90 | } |
91 | } | |
92 | } | |
93 | ||
b3a57661 | 94 | strend(str) |
717de9f0 CL |
95 | char *str; |
96 | { | |
b3a57661 | 97 | register char *p; |
717de9f0 | 98 | |
b3a57661 EW |
99 | for (p = str; *p; p++) |
100 | ; | |
101 | return p == str ? 0 : p[-1]; | |
717de9f0 CL |
102 | } |
103 | ||
b3a57661 EW |
104 | closeon(from, to, command, ta, ma, af) |
105 | register struct ship *from, *to; | |
106 | char command[]; | |
107 | int ma, ta, af; | |
717de9f0 CL |
108 | { |
109 | int high; | |
110 | char temp[10]; | |
111 | ||
112 | temp[0] = command[0] = '\0'; | |
113 | high = -30000; | |
b3a57661 | 114 | try(command, temp, ma, ta, af, ma, from->file->dir, from, to, &high, 0); |
717de9f0 CL |
115 | } |
116 | ||
b3a57661 | 117 | int dtab[] = {0,1,1,2,3,4,4,5}; /* diagonal distances in x==y */ |
717de9f0 | 118 | |
b3a57661 EW |
119 | score(movement, ship, to, onlytemp) |
120 | char movement[]; | |
121 | register struct ship *ship, *to; | |
122 | char onlytemp; | |
717de9f0 | 123 | { |
1eda8103 EW |
124 | char drift; |
125 | int row, col, dir, total, ran; | |
b3a57661 | 126 | register struct File *fp = ship->file; |
717de9f0 | 127 | |
b3a57661 EW |
128 | if ((dir = fp->dir) == 0) |
129 | return 0; | |
130 | row = fp->row; | |
131 | col = fp->col; | |
132 | drift = fp->drift; | |
133 | move(movement, ship, &fp->dir, &fp->row, &fp->col, &drift); | |
134 | if (!*movement) | |
135 | (void) strcpy(movement, "d"); | |
136 | ||
137 | ran = range(ship, to); | |
138 | total = -50 * ran; | |
139 | if (ran < 4 && gunsbear(ship, to)) | |
140 | total += 60; | |
141 | if ((ran = portside(ship, to, 1) - fp->dir) == 4 || ran == -4) | |
142 | total = -30000; | |
143 | ||
144 | if (!onlytemp) { | |
145 | fp->row = row; | |
146 | fp->col = col; | |
147 | fp->dir = dir; | |
148 | } | |
149 | return total; | |
150 | } | |
151 | ||
b3a57661 EW |
152 | move(p, ship, dir, row, col, drift) |
153 | register char *p; | |
154 | register struct ship *ship; | |
1eda8103 EW |
155 | register char *dir; |
156 | register short *row, *col; | |
157 | register char *drift; | |
b3a57661 EW |
158 | { |
159 | int dist; | |
160 | char moved = 0; | |
161 | ||
162 | for (; *p; p++) { | |
163 | switch (*p) { | |
164 | case 'r': | |
165 | if (++*dir == 9) | |
166 | *dir = 1; | |
167 | break; | |
168 | case 'l': | |
169 | if (--*dir == 0) | |
170 | *dir = 8; | |
171 | break; | |
172 | case '1': case '2': case '3': case '4': | |
173 | case '5': case '6': case '7': | |
174 | moved++; | |
175 | if (*dir % 2 == 0) | |
176 | dist = dtab[*p - '0']; | |
177 | else | |
178 | dist = *p - '0'; | |
179 | *row -= dr[*dir] * dist; | |
180 | *col -= dc[*dir] * dist; | |
181 | break; | |
717de9f0 | 182 | } |
717de9f0 | 183 | } |
b3a57661 | 184 | if (!moved) { |
9d517234 | 185 | if (windspeed != 0 && ++*drift > 2) { |
b3a57661 | 186 | if (ship->specs->class >= 3 && !snagged(ship) |
acfebbf7 | 187 | || (turn & 1) == 0) { |
b3a57661 EW |
188 | *row -= dr[winddir]; |
189 | *col -= dc[winddir]; | |
190 | } | |
191 | } | |
192 | } else | |
acfebbf7 | 193 | *drift = 0; |
717de9f0 CL |
194 | } |
195 | ||
b3a57661 EW |
196 | try(command, temp, ma, ta, af, vma, dir, f, t, high, rakeme) |
197 | register struct ship *f, *t; | |
198 | int ma, ta, af, *high, rakeme; | |
199 | char command[], temp[]; | |
717de9f0 CL |
200 | { |
201 | register int new, n; | |
202 | char st[4]; | |
b3a57661 | 203 | #define rakeyou (gunsbear(f, t) && !gunsbear(t, f)) |
717de9f0 CL |
204 | |
205 | if ((n = strend(temp)) < '1' || n > '9') | |
b3a57661 EW |
206 | for (n = 1; vma - n >= 0; n++) { |
207 | (void) sprintf(st, "%d", n); | |
208 | (void) strcat(temp, st); | |
209 | new = score(temp, f, t, rakeme); | |
210 | if (new > *high && (!rakeme || rakeyou)) { | |
717de9f0 | 211 | *high = new; |
b3a57661 | 212 | (void) strcpy(command, temp); |
717de9f0 | 213 | } |
b3a57661 EW |
214 | try(command, temp, ma-n, ta, af, vma-n, |
215 | dir, f, t, high, rakeme); | |
717de9f0 CL |
216 | rmend(temp); |
217 | } | |
b3a57661 EW |
218 | if (ma > 0 && ta > 0 && (n = strend(temp)) != 'l' && n != 'r' || !strlen(temp)) { |
219 | (void) strcat(temp, "r"); | |
220 | new = score(temp, f, t, rakeme); | |
221 | if (new > *high && (!rakeme || gunsbear(f, t) && !gunsbear(t, f))) { | |
717de9f0 | 222 | *high = new; |
b3a57661 | 223 | (void) strcpy(command, temp); |
717de9f0 | 224 | } |
b3a57661 | 225 | try(command, temp, ma-1, ta-1, af, min(ma-1, maxmove(f, (dir == 8 ? 1 : dir+1), 0)), (dir == 8 ? 1 : dir+1),f,t,high,rakeme); |
717de9f0 CL |
226 | rmend(temp); |
227 | } | |
b3a57661 EW |
228 | if ((ma > 0 && ta > 0 && (n = strend(temp)) != 'l' && n != 'r') || !strlen(temp)){ |
229 | (void) strcat(temp, "l"); | |
230 | new = score(temp, f, t, rakeme); | |
231 | if (new > *high && (!rakeme || (gunsbear(f, t) && !gunsbear(t, f)))){ | |
717de9f0 | 232 | *high = new; |
b3a57661 | 233 | (void) strcpy(command, temp); |
717de9f0 | 234 | } |
b3a57661 | 235 | try(command, temp, ma-1, ta-1, af, (min(ma-1,maxmove(f, (dir-1 ? dir-1 : 8), 0))), (dir-1 ? dir -1 : 8), f, t, high, rakeme); |
717de9f0 CL |
236 | rmend(temp); |
237 | } | |
238 | } | |
9224751f EW |
239 | |
240 | rmend(str) | |
241 | char *str; | |
242 | { | |
243 | register char *p; | |
244 | ||
245 | for (p = str; *p; p++) | |
246 | ; | |
247 | if (p != str) | |
248 | *--p = 0; | |
249 | } |