1 files changed, 128 insertions, 0 deletions
diff --git a/ksnake/ball.cpp b/ksnake/ball.cpp
new file mode 100644
index 00000000..2881beb9
--- /dev/null
+++ b/ksnake/ball.cpp
@@ -0,0 +1,128 @@
+/**
+ * Copyright Michel Filippi <mfilippi@sade.rhein-main.de>
+ *           Robert Williams
+ *           Andrew Chant <andrew.chant@utoronto.ca>
+ *           André Luiz dos Santos <andre@netvision.com.br>
+ *           Benjamin Meyer <ben+ksnake@meyerhome.net>
+ *
+ * This file is part of the ksnake package
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ball.h"
+#include "board.h"
+
+int bounce[8][8]={
+    { NE, NW, SE, SW, N, E, S, W },
+    { SE, SW, NE, NW, S, E, N, W },
+    { NW, NE, SW, SE, N, W, S, E },
+    { SW, SE, NW, NE, S, W, N, E },
+    { NE, NW, SE, SW, N, E, S, W },
+    { SE, SW, NE, NW, S, E, N, W },
+    { NW, NE, SW, SE, N, W, S, E },
+    { SW, SE, NW, NE, S, W, N, E }
+};
+
+Ball::Ball(Board *b, PixServer *p)
+{
+    board = b;
+    pixServer = p;
+
+    int i = BoardWidth+1;
+    while( !board->isEmpty(i) ) i++;
+    hold = index = i;
+    board->set(index, Balle);
+    next = SE;
+}
+
+void Ball::zero()
+{
+    board->set(index, empty);
+    pixServer->erase(index);
+}
+
+void Ball::nextMove()
+{
+    hold = index;
+    board->set(hold, empty);
+
+    for ( int x = 0; x < 8 ; x++) {
+	int d = bounce[next][x];
+	int nextSq = board->getNext(d, index);
+
+	if (board->isHead(nextSq) || board->isEmpty(nextSq)) {
+	    next = d;
+	    index = nextSq;
+	    board->set(index, Balle);
+	    break;
+	}
+    }
+}
+
+void Ball::repaint()
+{
+    static int i = 0;
+    static bool rotate = true;
+
+    pixServer->erase(hold);
+    pixServer->draw(index, BallPix, i);
+
+    if (rotate)
+	if (++i > 3) i=0;
+
+	rotate = !rotate;
+}
+
+void KillerBall::nextMove()
+{
+	hold = index;
+	board->set(hold, empty);
+	
+	// Find the snake.
+	int sn = board->samyHeadIndex();
+	if(board->isHead(sn)) {
+		int nextSq = getNextSquare();
+		if(nextSq != -1) {
+			next = board->direction(index, nextSq);
+			index = nextSq;
+			board->set(index, Balle);
+			return;
+		}
+	}
+	
+	for ( int x = 0; x < 8 ; x++) {
+		int d = bounce[next][x];
+		int nextSq = board->getNext(d, index);
+		
+		if (board->isHead(nextSq) || board->isEmpty(nextSq)) {
+			next = d;
+			index = nextSq;
+			board->set(index, Balle);
+			break;
+		}
+	}
+}
+
+int KillerBall::getNextSquare()
+{
+	return board->getNextCloseTo(index, board->samyHeadIndex(), true);
+}
+
+int DumbKillerBall::getNextSquare()
+{
+	return board->getNextCloseToDumb(index, board->samyHeadIndex());
+}