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