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 * @(#)move_robs.c 8.1 (Berkeley) 5/31/93 30 * $FreeBSD: src/games/robots/move_robs.c,v 1.4 1999/11/30 03:49:19 billf Exp $ 31 * $DragonFly: src/games/robots/move_robs.c,v 1.4 2006/08/27 21:45:07 pavalos Exp $ 32 */ 33 34 #include "robots.h" 35 #include <signal.h> 36 37 static int sign(int); 38 39 /* 40 * move_robots: 41 * Move the robots around 42 */ 43 void 44 move_robots(bool was_sig) 45 { 46 COORD *rp; 47 48 if (Real_time) 49 signal(SIGALRM, (sig_t)move_robots); 50 #ifdef DEBUG 51 move(Min.y, Min.x); 52 addch(inch()); 53 move(Max.y, Max.x); 54 addch(inch()); 55 #endif /* DEBUG */ 56 for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) { 57 if (rp->y < 0) 58 continue; 59 mvaddch(rp->y, rp->x, ' '); 60 Field[rp->y][rp->x]--; 61 rp->y += sign(My_pos.y - rp->y); 62 rp->x += sign(My_pos.x - rp->x); 63 if (rp->y <= 0) 64 rp->y = 0; 65 else if (rp->y >= Y_FIELDSIZE) 66 rp->y = Y_FIELDSIZE - 1; 67 if (rp->x <= 0) 68 rp->x = 0; 69 else if (rp->x >= X_FIELDSIZE) 70 rp->x = X_FIELDSIZE - 1; 71 Field[rp->y][rp->x]++; 72 } 73 74 Min.y = Y_FIELDSIZE; 75 Min.x = X_FIELDSIZE; 76 Max.y = 0; 77 Max.x = 0; 78 for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) 79 if (rp->y < 0) 80 continue; 81 else if (rp->y == My_pos.y && rp->x == My_pos.x) 82 Dead = true; 83 else if (Field[rp->y][rp->x] > 1) { 84 mvaddch(rp->y, rp->x, HEAP); 85 rp->y = -1; 86 Num_robots--; 87 if (Waiting) 88 Wait_bonus++; 89 add_score(ROB_SCORE); 90 } 91 else { 92 mvaddch(rp->y, rp->x, ROBOT); 93 if (rp->y < Min.y) 94 Min.y = rp->y; 95 if (rp->x < Min.x) 96 Min.x = rp->x; 97 if (rp->y > Max.y) 98 Max.y = rp->y; 99 if (rp->x > Max.x) 100 Max.x = rp->x; 101 } 102 103 if (was_sig) { 104 refresh(); 105 if (Dead || Num_robots <= 0) 106 longjmp(End_move, 0); 107 } 108 109 #ifdef DEBUG 110 standout(); 111 move(Min.y, Min.x); 112 addch(inch()); 113 move(Max.y, Max.x); 114 addch(inch()); 115 standend(); 116 #endif /* DEBUG */ 117 if (Real_time) 118 alarm(3); 119 } 120 121 /* 122 * add_score: 123 * Add a score to the overall point total 124 */ 125 void 126 add_score(int add) 127 { 128 Score += add; 129 move(Y_SCORE, X_SCORE); 130 printw("%d", Score); 131 } 132 133 /* 134 * sign: 135 * Return the sign of the number 136 */ 137 static int 138 sign(int n) 139 { 140 if (n < 0) 141 return -1; 142 else if (n > 0) 143 return 1; 144 else 145 return 0; 146 } 147