From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Mon, 24 Oct 2011 17:31:08 +0000 (+0200)
Subject: Let perpetual-chase message mention square
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=d9d4e462f10fe222828adcc7ba6adfa833259208;p=xboard.git

Let perpetual-chase message mention square

In stead of a boolean, PerpetualChase now returns the square the chased
piece ends on (encoded as an int), and on adjudication it will be printed.
---

diff --git a/backend.c b/backend.c
index ed803ff..bac20d8 100644
--- a/backend.c
+++ b/backend.c
@@ -7626,8 +7626,10 @@ Adjudicate(ChessProgramState *cps)
 				    hisPerpetual = PerpetualChase(k, forwardMostMove);
 				    ourPerpetual = PerpetualChase(k+1, forwardMostMove);
 				    if(ourPerpetual && !hisPerpetual) { // we are actively chasing him: forfeit
+					static char resdet[MSG_SIZ];
 					result = WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins;
-		 			details = "Xboard adjudication: perpetual chasing";
+		 			details = resdet;
+					snprintf(resdet, MSG_SIZ, "Xboard adjudication: perpetual chasing of %c%c", ourPerpetual>>8, ourPerpetual&255);
 				    } else
 				    if(hisPerpetual && !ourPerpetual)   // he is chasing us, but did not repeat yet
 					break; // Abort repetition-checking loop.
diff --git a/moves.c b/moves.c
index 0d8d146..093df63 100644
--- a/moves.c
+++ b/moves.c
@@ -1947,5 +1947,6 @@ int PerpetualChase(int first, int last)
             }
         }
     }
-    return preyStackPointer; // if any piece was left on preyStack, it has been perpetually chased
+    return preyStackPointer ? 256*(preyStack[preyStackPointer].file - BOARD_LEFT + AAA) + (preyStack[preyStackPointer].rank + ONE)
+				: 0; // if any piece was left on preyStack, it has been perpetually chased,and we return the
 }