Print 50-move counter in Engine-Output title

[xboard.git] / engineoutput.c

diff --git a/engineoutput.c b/engineoutput.c
index 463f652..a21282e 100644 (file)
--- a/engineoutput.c
+++ b/engineoutput.c
@@ -43,6 +43,7 @@
 #include "common.h"
 #include "frontend.h"
 #include "backend.h"
+#include "moves.h"
 #include "engineoutput.h"
 
 typedef struct {
@@ -75,6 +76,25 @@ static char header[MSG_SIZ];
 #define MAX_VAR 400
 static int scores[MAX_VAR], textEnd[MAX_VAR], curDepth[2], nrVariations[2];
 
+void MakeEngineOutputTitle()
+{
+       static char buf[MSG_SIZ];
+       static char oldTitle[MSG_SIZ];
+       char *title = "Engine Output";
+      extern int initialRulePlies;
+       int count;
+       // figure out value of 50-move counter
+       count = currentMove;
+       while( (signed char)boards[count][EP_STATUS] <= EP_NONE && count > backwardMostMove ) count--;
+       if( count == backwardMostMove ) count -= initialRulePlies;
+       count += 2*appData.ruleMoves - currentMove;
+       snprintf(buf, MSG_SIZ, "%s (%d ply to draw)", title, count);
+       if(count <= 40) title = buf;
+       if(!strcmp(oldTitle, title)) return;
+       safeStrCpy(oldTitle, title, MSG_SIZ);
+       SetEngineOutputTitle(title);
+}
+
 // back end, due to front-end wrapper for SetWindowText, and new SetIcon arguments
 void SetEngineState( int which, int state, char * state_data )
 {