From a115ff2edd86e330518ff71e85658f4e4a7221e0 Mon Sep 17 00:00:00 2001
From: StackSmith <stack@sdf.org>
Date: Thu, 29 Jun 2023 11:56:57 -0400
Subject: [PATCH] ok

---
 Makefile      |  4 ++++
 eleven.core.c | 29 +++++++++++++++++++++++++++++
 eleven.h      |  3 ++-
 3 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 90335c0..526ef5d 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,10 @@ eleven.term: eleven.core.o eleven.term.o
 	gcc $(CFLAGS) -o eleven eleven.core.o eleven.term.o
 	strip eleven
 
+elevenr: eleven.core.o eleven.termrot.o
+	gcc $(CFLAGS) -o elevenr eleven.core.o eleven.termrot.o
+	strip elevenr
+
 clean:
 	rm -f *.o
 	rm -f eleven
diff --git a/eleven.core.c b/eleven.core.c
index 3ab6184..c1b49e7 100644
--- a/eleven.core.c
+++ b/eleven.core.c
@@ -27,6 +27,15 @@ void pr(U8* tiles){
   }}
 */
 #define RND (rand()%SIZE)
+/* Orientation of the board, as shown by a bar:
+ * 0 = bottom
+ * 1 = left
+ * 2 = top
+ * 3 = right
+*/
+
+int orientation = 0;
+
 
 void twist(U8* tiles){
   int i,j;
@@ -139,3 +148,23 @@ U32 move(U8* tiles, int way){
 
   return n;
 }
+
+
+U32 moverot(U8* tiles, int way){
+  //if (way / 2)    twist(tiles);
+  //if (way % 2)    flip(tiles);
+  twist(tiles);
+  flip(tiles);
+  orientation = (orientation + 1) & 0x3;
+  if(way==2) { 
+    twist(tiles);
+    flip(tiles);
+    twist(tiles);
+    flip(tiles);
+    orientation = (orientation + 2) & 0x3;
+  }
+  U32 n = step(tiles);
+ 
+  //if (way / 2)    flip(tiles);
+  return n;
+}
diff --git a/eleven.h b/eleven.h
index af832c6..0d34168 100644
--- a/eleven.h
+++ b/eleven.h
@@ -16,5 +16,6 @@ enum {
 
 void init(U8* tiles);
 
-U32 move(U8* tiles, int way);
 
+U32 move(U8* tiles, int way);
+U32 moverot(U8* tiles, int way);