Commit | Line | Data |
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b8768ee6 | 1 | #ifndef lint |
06d69904 | 2 | static char sccsid[] = "@(#)klmove.c 4.2 (Berkeley) %G%"; |
b8768ee6 KM |
3 | #endif not lint |
4 | ||
5 | # include "trek.h" | |
6 | ||
7 | /* | |
8 | ** Move Klingons Around | |
9 | ** | |
10 | ** This is a largely incomprehensible block of code that moves | |
11 | ** Klingons around in a quadrant. It was written in a very | |
12 | ** "program as you go" fashion, and is a prime candidate for | |
13 | ** rewriting. | |
14 | ** | |
15 | ** The flag `fl' is zero before an attack, one after an attack, | |
16 | ** and two if you are leaving a quadrant. This serves to | |
17 | ** change the probability and distance that it moves. | |
18 | ** | |
19 | ** Basically, what it will try to do is to move a certain number | |
20 | ** of steps either toward you or away from you. It will avoid | |
21 | ** stars whenever possible. Nextx and nexty are the next | |
22 | ** sector to move to on a per-Klingon basis; they are roughly | |
23 | ** equivalent to Ship.sectx and Ship.secty for the starship. Lookx and | |
24 | ** looky are the sector that you are going to look at to see | |
25 | ** if you can move their. Dx and dy are the increment. Fudgex | |
26 | ** and fudgey are the things you change around to change your | |
27 | ** course around stars. | |
28 | */ | |
29 | ||
30 | klmove(fl) | |
31 | int fl; | |
32 | { | |
33 | int n; | |
34 | register struct kling *k; | |
35 | double dx, dy; | |
36 | int nextx, nexty; | |
37 | register int lookx, looky; | |
38 | int motion; | |
39 | int fudgex, fudgey; | |
40 | int qx, qy; | |
41 | double bigger; | |
42 | int i; | |
43 | ||
44 | # ifdef xTRACE | |
45 | if (Trace) | |
46 | printf("klmove: fl = %d, Etc.nkling = %d\n", fl, Etc.nkling); | |
47 | # endif | |
48 | for (n = 0; n < Etc.nkling; k && n++) | |
49 | { | |
50 | k = &Etc.klingon[n]; | |
51 | i = 100; | |
52 | if (fl) | |
53 | i = 100.0 * k->power / Param.klingpwr; | |
54 | if (ranf(i) >= Param.moveprob[2 * Move.newquad + fl]) | |
55 | continue; | |
56 | /* compute distance to move */ | |
57 | motion = ranf(75) - 25; | |
06d69904 | 58 | motion *= k->avgdist * Param.movefac[2 * Move.newquad + fl]; |
b8768ee6 KM |
59 | /* compute direction */ |
60 | dx = Ship.sectx - k->x + ranf(3) - 1; | |
61 | dy = Ship.secty - k->y + ranf(3) - 1; | |
62 | bigger = dx; | |
63 | if (dy > bigger) | |
64 | bigger = dy; | |
65 | if (bigger == 0.0) | |
66 | bigger = 1.0; | |
67 | dx = dx / bigger + 0.5; | |
68 | dy = dy / bigger + 0.5; | |
69 | if (motion < 0) | |
70 | { | |
71 | motion = -motion; | |
72 | dx = -dx; | |
73 | dy = -dy; | |
74 | } | |
75 | fudgex = fudgey = 1; | |
76 | /* try to move the klingon */ | |
77 | nextx = k->x; | |
78 | nexty = k->y; | |
79 | for (; motion > 0; motion--) | |
80 | { | |
81 | lookx = nextx + dx; | |
82 | looky = nexty + dy; | |
83 | if (lookx < 0 || lookx >= NSECTS || looky < 0 || looky >= NSECTS) | |
84 | { | |
85 | /* new quadrant */ | |
86 | qx = Ship.quadx; | |
87 | qy = Ship.quady; | |
88 | if (lookx < 0) | |
06d69904 | 89 | qx -= 1; |
b8768ee6 KM |
90 | else |
91 | if (lookx >= NSECTS) | |
06d69904 | 92 | qx += 1; |
b8768ee6 | 93 | if (looky < 0) |
06d69904 | 94 | qy -= 1; |
b8768ee6 KM |
95 | else |
96 | if (looky >= NSECTS) | |
06d69904 | 97 | qy += 1; |
b8768ee6 KM |
98 | if (qx < 0 || qx >= NQUADS || qy < 0 || qy >= NQUADS || |
99 | Quad[qx][qy].stars < 0 || Quad[qx][qy].klings > MAXKLQUAD - 1) | |
100 | break; | |
101 | if (!damaged(SRSCAN)) | |
102 | { | |
103 | printf("Klingon at %d,%d escapes to quadrant %d,%d\n", | |
104 | k->x, k->y, qx, qy); | |
105 | motion = Quad[qx][qy].scanned; | |
106 | if (motion >= 0 && motion < 1000) | |
06d69904 | 107 | Quad[qx][qy].scanned += 100; |
b8768ee6 KM |
108 | motion = Quad[Ship.quadx][Ship.quady].scanned; |
109 | if (motion >= 0 && motion < 1000) | |
06d69904 | 110 | Quad[Ship.quadx][Ship.quady].scanned -= 100; |
b8768ee6 KM |
111 | } |
112 | Sect[k->x][k->y] = EMPTY; | |
06d69904 KL |
113 | Quad[qx][qy].klings += 1; |
114 | Etc.nkling -= 1; | |
b8768ee6 | 115 | bmove(&Etc.klingon[Etc.nkling], k, sizeof *k); |
06d69904 | 116 | Quad[Ship.quadx][Ship.quady].klings -= 1; |
b8768ee6 KM |
117 | k = 0; |
118 | break; | |
119 | } | |
120 | if (Sect[lookx][looky] != EMPTY) | |
121 | { | |
122 | lookx = nextx + fudgex; | |
123 | if (lookx < 0 || lookx >= NSECTS) | |
124 | lookx = nextx + dx; | |
125 | if (Sect[lookx][looky] != EMPTY) | |
126 | { | |
127 | fudgex = -fudgex; | |
128 | looky = nexty + fudgey; | |
129 | if (looky < 0 || looky >= NSECTS || Sect[lookx][looky] != EMPTY) | |
130 | { | |
131 | fudgey = -fudgey; | |
132 | break; | |
133 | } | |
134 | } | |
135 | } | |
136 | nextx = lookx; | |
137 | nexty = looky; | |
138 | } | |
139 | if (k && (k->x != nextx || k->y != nexty)) | |
140 | { | |
141 | if (!damaged(SRSCAN)) | |
142 | printf("Klingon at %d,%d moves to %d,%d\n", | |
143 | k->x, k->y, nextx, nexty); | |
144 | Sect[k->x][k->y] = EMPTY; | |
145 | Sect[k->x = nextx][k->y = nexty] = KLINGON; | |
146 | } | |
147 | } | |
148 | compkldist(0); | |
149 | } |