One-click moves

Playing on ICS or against engine, clicking a square from or to which
only a single move can be made causes the move to be done, when the new
option -oneClickMove is set to true.

diff --git a/args.h b/args.h
index 1c6053e..e85deb4 100644 (file)
--- a/args.h
+++ b/args.h
@@ -542,6 +542,7 @@ ArgDescriptor argDescriptors[] = {
   { "defaultPathEGTB", ArgFilename, (void *) &appData.defaultPathEGTB, TRUE, (ArgIniType) "c:\\egtb" },
 
   /* [HGM] board-size, adjudication and misc. options */
+  { "oneClickMove", ArgBoolean, (void *) &appData.oneClick, TRUE, (ArgIniType) FALSE },
   { "boardWidth", ArgInt, (void *) &appData.NrFiles, TRUE, (ArgIniType) -1 },
   { "boardHeight", ArgInt, (void *) &appData.NrRanks, TRUE, (ArgIniType) -1 },
   { "holdingsSize", ArgInt, (void *) &appData.holdingsSize, TRUE, (ArgIniType) -1 },

diff --git a/backend.c b/backend.c
index 6499a0d..afb509c 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -5549,6 +5549,55 @@ OKToStartUserMove(x, y)
     return TRUE;
 }
 
+Boolean
+OnlyMove(int *x, int *y) {
+    DisambiguateClosure cl;
+    if (appData.zippyPlay) return FALSE;
+    switch(gameMode) {
+      case MachinePlaysBlack:
+      case IcsPlayingWhite:
+      case BeginningOfGame:
+       if(!WhiteOnMove(currentMove)) return FALSE;
+       break;
+      case MachinePlaysWhite:
+      case IcsPlayingBlack:
+       if(WhiteOnMove(currentMove)) return FALSE;
+       break;
+      default:
+       return FALSE;
+    }
+    cl.pieceIn = EmptySquare; 
+    cl.rfIn = *y;
+    cl.ffIn = *x;
+    cl.rtIn = -1;
+    cl.ftIn = -1;
+    cl.promoCharIn = NULLCHAR;
+    Disambiguate(boards[currentMove], PosFlags(currentMove), &cl);
+    if(cl.kind == NormalMove) {
+      fromX = cl.ff;
+      fromY = cl.rf;
+      *x = cl.ft;
+      *y = cl.rt;
+      return TRUE;
+    }
+    if(cl.kind != ImpossibleMove) return FALSE;
+    cl.pieceIn = EmptySquare;
+    cl.rfIn = -1;
+    cl.ffIn = -1;
+    cl.rtIn = *y;
+    cl.ftIn = *x;
+    cl.promoCharIn = NULLCHAR;
+    Disambiguate(boards[currentMove], PosFlags(currentMove), &cl);
+    if(cl.kind == NormalMove) {
+      fromX = cl.ff;
+      fromY = cl.rf;
+      *x = cl.ft;
+      *y = cl.rt;
+      return TRUE;
+    }
+    return FALSE;
+}
+
 FILE *lastLoadGameFP = NULL, *lastLoadPositionFP = NULL;
 int lastLoadGameNumber = 0, lastLoadPositionNumber = 0;
 int lastLoadGameUseList = FALSE;
@@ -6039,6 +6088,7 @@ void LeftClick(ClickType clickType, int xPix, int yPix)
        return;
 
     if (fromX == -1) {
+      if(!appData.oneClick || !OnlyMove(&x, &y)) {
        if (clickType == Press) {
            /* First square */
            if (OKToStartUserMove(x, y)) {
@@ -6053,6 +6103,7 @@ void LeftClick(ClickType clickType, int xPix, int yPix)
            }
        }
        return;
+      }
     }
 
     /* fromX != -1 */

diff --git a/common.h b/common.h
index f97f16c..a5577e2 100644 (file)
--- a/common.h
+++ b/common.h
@@ -448,6 +448,7 @@ typedef struct {
     char *cmailGameName; /* xboard only */
     Boolean alwaysPromoteToQueen;
     Boolean oldSaveStyle;
+    Boolean oneClick;
     Boolean quietPlay;
     Boolean showThinking;
     Boolean ponderNextMove;