From 8b46907501d8a0857d4ea9436c2082119497d50a Mon Sep 17 00:00:00 2001 From: H.G.Muller Date: Sun, 31 May 2020 19:19:04 +0200 Subject: [PATCH] Implement move indcution in XBeta A non-final leg with 'x' modifier is recognized as an induction step that would endow a friend at its target position with the move specified in the remaining legs. fix --- moves.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/moves.c b/moves.c index 33fda55..da1aa13 100644 --- a/moves.c +++ b/moves.c @@ -401,6 +401,7 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle if(*desc == 'c') mode |= his, desc++; // capture foe if(*desc == 'd') mode |= mine, desc++; // destroy (capture friend) if(*desc == 'e') mode |= 8, desc++; // e.p. capture last mover + if(*desc == 'x') mode = mine|1<<12, desc++; // induction step if(*desc == 't') mode |= 16, desc++; // exclude enemies as hop platform ('test') if(*desc == 'p') mode |= 32, desc++; // hop over occupied if(*desc == 'g') mode |= 64, desc++; // hop and toggle range @@ -472,7 +473,7 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle if(occup & mode) { // valid intermediate square, do continuation char origAtom = *atom; int rg = (expo != 1 ? expo - i + 1 : range); // pass length of last *slider* leg - int transp = occup & mode & 0x104; // no side effect on intermediate square + int transp = (occup | 1<<12) & mode & 0x1104; // no side effect on intermediate square if(!(bit & all)) *atom = rotate[*atom - 'A']; // orth-diag interconversion to make direction valid if(transp && !u) { // no side effects, merge legs to one move if(skip < 0 && occup == 4) { // create e.p. rights on this square @@ -480,6 +481,7 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle if(viaX == x && viaY == y - vy) viaY = y | 128; // flag it when we can handle it } else viaX = x, viaY = y; } + if(mode & 1<<12) MovesFromString(board, flags, x, y, x, y, dir, rg, cont, cb, cl), occup = 0; else MovesFromString(board, flags, f, r, x, y, dir, rg, cont, cb, cl); if(viaY & 128) viaY = y - vy; else viaX = viaY = 100; } -- 1.7.0.4