$NetBSD: patch-ac,v 1.1.1.1 2000/10/15 08:38:22 jlam Exp $

--- knightcap.c.orig	Sun May 17 19:09:21 1998
+++ knightcap.c
@@ -6,7 +6,7 @@
 #include "trackball.h"
 #include "knightcap.h"
 
-static int window_size = 500;
+int window_size = 500;
 
 #define SLEEP_TIME 100000 /* microseconds */
 #define REFRESH_TIME 20 /* in seconds */
@@ -21,6 +21,7 @@
 int seek_answering=0;
 int demo_mode = 0;
 
+static int starts = 0;		/* default to no computer play */
 static int opponent;
 static int always_think;
 static int no_display;
@@ -56,7 +57,7 @@
 char *ics_master = NULL;
 char *coeffs_file = NULL;
 char *bad_eval_file = "bad_eval.dat";
-char *tb_path = "../EGTB";
+char *tb_path = TB_DIR;
 
 char play_target[100];
 
@@ -82,7 +83,7 @@
 void reset_board(void)
 {
 	setup_board(&state->position);
-	state->computer = 0;
+	state->computer = starts;
 	state->moved = 0;
 	state->always_think = always_think;
 	state->use_mulling = use_mulling;
@@ -945,7 +946,7 @@
 	reset_board();
 	init_movements();
 
-	signal(SIGCLD, SIG_IGN);
+	signal(SIGCHLD, SIG_IGN);
 
 	pid1 = getpid();
 
@@ -1000,6 +1001,11 @@
 "-T <name>           target ICS opponent\n" \
 "-G <file>           endgame tablebsae directory\n" \
 "-y                  don't mull\n" \
+"-1                  Computer plays white\n" \
+"-2                  Computer plays black\n" \
+"-0                  Computer plays neither white nor black\n" \
+"\n" \
+"call xboard with:   xboard -fcp 'KnightCap -n -X -A -2'\n" \
 "\n");
 }
 
@@ -1010,7 +1016,11 @@
 #ifdef SUNOS4
 	extern char *optarg;
 #endif
-	char *opt = "c:s:w:nI:t:hXAD:l:aH:M:ezdm:f:g:ByEpT:";
+	/*
+	 * Add support for specifying what colour the computer plays
+	 * at start.
+	 */
+	char *opt = "012c:s:w:nI:t:hXAD:l:aH:M:ezdm:f:g:ByEpT:";
 	int c;
 	int seed = getpid();
 
@@ -1030,6 +1040,7 @@
 			if (getcid()) break;
 #endif
 			window_size = atoi(optarg);
+			lprintf(0, "Window size: %d\n", window_size);
 			break;
 
 		case 'c':
@@ -1151,6 +1162,15 @@
 		case 'g':
 			tb_path = optarg;
 			break;
+		case '0':       
+			starts = 0;
+			break;
+		case '1':       
+			starts = 1;
+			break;
+		case '2':
+			starts = -1;    
+			break;
 		}
 	}
 
@@ -1178,6 +1198,13 @@
 	parse_options(argc, argv);
 
 	create_threads();
+
+	/*
+	 * Initialize colour the computer plays to what's specified,
+	 * or default to playing neither side.
+	 */
+	state->computer = starts;
+	state->colour = starts;
 
 	state->ics_robot = ics_mode;
 	state->autoplay = ics_mode;