| 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 | |
| 34 | #ifndef lint |
| 35 | static char sccsid[] = "@(#)visual.c 8.1 (Berkeley) 5/31/93"; |
| 36 | #endif /* not lint */ |
| 37 | |
| 38 | # include "trek.h" |
| 39 | |
| 40 | /* |
| 41 | ** VISUAL SCAN |
| 42 | ** |
| 43 | ** A visual scan is made in a particular direction of three sectors |
| 44 | ** in the general direction specified. This takes time, and |
| 45 | ** Klingons can attack you, so it should be done only when sensors |
| 46 | ** are out. |
| 47 | */ |
| 48 | |
| 49 | /* This struct[] has the delta x, delta y for particular directions */ |
| 50 | struct xy Visdelta[11] = |
| 51 | { |
| 52 | -1, -1, |
| 53 | -1, 0, |
| 54 | -1, 1, |
| 55 | 0, 1, |
| 56 | 1, 1, |
| 57 | 1, 0, |
| 58 | 1, -1, |
| 59 | 0, -1, |
| 60 | -1, -1, |
| 61 | -1, 0, |
| 62 | -1, 1 |
| 63 | }; |
| 64 | |
| 65 | visual() |
| 66 | { |
| 67 | register int ix, iy; |
| 68 | int co; |
| 69 | register struct xy *v; |
| 70 | |
| 71 | co = getintpar("direction"); |
| 72 | if (co < 0 || co > 360) |
| 73 | return; |
| 74 | co = (co + 22) / 45; |
| 75 | v = &Visdelta[co]; |
| 76 | ix = Ship.sectx + v->x; |
| 77 | iy = Ship.secty + v->y; |
| 78 | if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) |
| 79 | co = '?'; |
| 80 | else |
| 81 | co = Sect[ix][iy]; |
| 82 | printf("%d,%d %c ", ix, iy, co); |
| 83 | v++; |
| 84 | ix = Ship.sectx + v->x; |
| 85 | iy = Ship.secty + v->y; |
| 86 | if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) |
| 87 | co = '?'; |
| 88 | else |
| 89 | co = Sect[ix][iy]; |
| 90 | printf("%c ", co); |
| 91 | v++; |
| 92 | ix = Ship.sectx + v->x; |
| 93 | iy = Ship.secty + v->y; |
| 94 | if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) |
| 95 | co = '?'; |
| 96 | else |
| 97 | co = Sect[ix][iy]; |
| 98 | printf("%c %d,%d\n", co, ix, iy); |
| 99 | Move.time = 0.05; |
| 100 | Move.free = 0; |
| 101 | } |