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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)visual.c 8.1 (Berkeley) 5/31/93 30 * $FreeBSD: src/games/trek/visual.c,v 1.4 1999/11/30 03:49:56 billf Exp $ 31 * $DragonFly: src/games/trek/visual.c,v 1.3 2006/09/07 21:19:45 pavalos Exp $ 32 */ 33 34 #include "trek.h" 35 #include "getpar.h" 36 37 /* 38 ** VISUAL SCAN 39 ** 40 ** A visual scan is made in a particular direction of three sectors 41 ** in the general direction specified. This takes time, and 42 ** Klingons can attack you, so it should be done only when sensors 43 ** are out. 44 */ 45 46 /* This struct[] has the delta x, delta y for particular directions */ 47 struct xy Visdelta[11] = { 48 { -1, -1 }, 49 { -1, 0 }, 50 { -1, 1 }, 51 { 0, 1 }, 52 { 1, 1 }, 53 { 1, 0 }, 54 { 1, -1 }, 55 { 0, -1 }, 56 { -1, -1 }, 57 { -1, 0 }, 58 { -1, 1 } 59 }; 60 61 void 62 visual(int z __unused) 63 { 64 int ix, iy; 65 int co; 66 struct xy *v; 67 68 co = getintpar("direction"); 69 if (co < 0 || co > 360) 70 return; 71 co = (co + 22) / 45; 72 v = &Visdelta[co]; 73 ix = Ship.sectx + v->x; 74 iy = Ship.secty + v->y; 75 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) 76 co = '?'; 77 else 78 co = Sect[ix][iy]; 79 printf("%d,%d %c ", ix, iy, co); 80 v++; 81 ix = Ship.sectx + v->x; 82 iy = Ship.secty + v->y; 83 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) 84 co = '?'; 85 else 86 co = Sect[ix][iy]; 87 printf("%c ", co); 88 v++; 89 ix = Ship.sectx + v->x; 90 iy = Ship.secty + v->y; 91 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS) 92 co = '?'; 93 else 94 co = Sect[ix][iy]; 95 printf("%c %d,%d\n", co, ix, iy); 96 Move.time = 0.05; 97 Move.free = 0; 98 } 99