1 files changed, 70 insertions, 0 deletions
diff --git a/source/Piston.h b/source/Piston.h
new file mode 100644
index 000000000..67aa80d67
--- /dev/null
+++ b/source/Piston.h
@@ -0,0 +1,70 @@
+
+#pragma once
+
+
+
+
+
+// fwd: World.h
+class cWorld;
+
+
+
+
+
+class cPiston
+{
+public:
+
+	cPiston(cWorld * a_World);
+
+	static NIBBLETYPE RotationPitchToMetaData(double a_Rotation, double a_Pitch)
+	{
+		if (a_Pitch >= 50)
+		{
+			return 0x1;
+		}
+		else if (a_Pitch <= -50)
+		{
+			return 0x0;
+		}
+		else
+		{
+			a_Rotation += 90 + 45;  // So its not aligned with axis
+
+			if (a_Rotation > 360)
+			{
+				a_Rotation -= 360;
+			}
+			if ((a_Rotation >= 0) && (a_Rotation < 90))
+			{
+				return 0x4;
+			}
+			else if ((a_Rotation >= 180) && (a_Rotation < 270))
+			{
+				return 0x5;
+			}
+			else if ((a_Rotation >= 90) && (a_Rotation < 180))
+			{
+				return 0x2;
+			}
+			else
+			{
+				return 0x3;
+			}
+		}
+	}
+
+	void ExtendPiston( int, int, int );
+	void RetractPiston( int, int, int );
+
+	cWorld * m_World;
+
+private:
+	void ChainMove( int, int, int, char, unsigned short * );
+	unsigned short FirstPassthroughBlock( int, int, int, char );
+} ;
+
+
+
+