(svn r3877) Add functions to turn a tile into a rail/road bridge ramp/middle part

2006-03-15 07:10:41 +00:00
parent decf3c42f8
commit 251242165c
3 changed files with 72 additions and 22 deletions
--- a/direction.h
+++ b/direction.h
@@ -102,4 +102,14 @@ static inline Axis DiagDirToAxis(DiagDirection d)
 	return (Axis)(d & 1);
 }

+
+/*
+ * Converts an Axis to a DiagDirection
+ * Points always in the positive direction, i.e. S[EW]
+ */
+static inline DiagDirection AxisToDiagDir(Axis a)
+{
+	return (DiagDirection)(2 - a);
+}
+
 #endif