Facings enum. StateMachine fixes

src/Components/Logic/StateMachine.bf

@@ -78,7 +78,7 @@ namespace Strawberry
 		private bool CallEnter()
 		{
 			let s = states[state];
-			if (s != null)
+			if (s != null && s.Enter != null)
 			{
 				inStateCall = true;
 				let set = s.Enter();
@@ -92,7 +92,7 @@ namespace Strawberry
 		private bool CallUpdate()
 		{
 			let s = states[state];
-			if (s != null)
+			if (s != null && s.Update != null)
 			{
 				inStateCall = true;
 				let set = s.Update();
@@ -106,7 +106,7 @@ namespace Strawberry
 		private bool CallExit()
 		{
 			let s = states[state];
-			if (s != null)
+			if (s != null && s.Exit != null)
 			{
 				inStateCall = true;
 				let set = s.Exit();

src/Struct/Cardinals.bf

@@ -9,6 +9,44 @@ namespace Strawberry
 		case Left;
 		case Up;
 
+		public int X
+		{
+			get
+			{
+				switch (this)
+				{
+				case .Left:
+					return -1;
+				case .Right:
+					return 1;
+				case .Up:
+				case .Down:
+				default:
+				}
+
+				return 0;
+			}
+		}
+
+		public int Y
+		{
+			get
+			{
+				switch (this)
+				{
+				case .Up:
+					return -1;
+				case .Down:
+					return 1;
+				case .Left:
+				case .Right:
+				default:
+				}
+
+				return 0;
+			}
+		}
+
 		public Cardinals Opposite()
 		{
 			switch (this)
@@ -54,6 +92,14 @@ namespace Strawberry
 			}
 		}
 
+		static public implicit operator Cardinals(Facings f)
+		{
+			if (f == Facings.Right)
+				return Cardinals.Right;
+			else
+				return Cardinals.Left;
+		}
+
 		static public implicit operator Point(Cardinals c)
 		{
 			switch (c)

src/Struct/Facings.bf

@@ -0,0 +1,32 @@
+namespace Strawberry
+{
+	public enum Facings
+	{
+		case Right = 1;
+		case Left = -1;
+
+		public Facings Opposite()
+		{
+			if (this == .Right)
+				return .Left;
+			else
+				return .Right;
+		}
+
+		static public Facings FromInt(int i, Facings ifZero = .Right)
+		{
+			if (i == 0)
+				return ifZero;
+			else
+				return i;
+		}
+
+		static public implicit operator Facings(int i)
+		{
+			if (i < 0)
+				return .Left;
+			else
+				return .Right;
+		}
+	}
+}