Add FxFloatCast

- The master branch really didn't have this already?

src/thingdef/thingdef_exp.h

@@ -314,6 +314,25 @@ public:
 };
 
 
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+class FxFloatCast : public FxExpression
+{
+	FxExpression *basex;
+
+public:
+
+	FxFloatCast(FxExpression *x);
+	~FxFloatCast();
+	FxExpression *Resolve(FCompileContext&);
+
+	ExpVal EvalExpression (AActor *self);
+};
+
 //==========================================================================
 //
 //	FxSign

src/thingdef/thingdef_expression.cpp

@@ -446,6 +446,82 @@ ExpVal FxIntCast::EvalExpression (AActor *self)
 }
 
 
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FxFloatCast::FxFloatCast(FxExpression *x)
+: FxExpression(x->ScriptPosition)
+{
+	basex = x;
+	ValueType = VAL_Float;
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FxFloatCast::~FxFloatCast()
+{
+	SAFE_DELETE(basex);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FxExpression *FxFloatCast::Resolve(FCompileContext &ctx)
+{
+	CHECKRESOLVED();
+	SAFE_RESOLVE(basex, ctx);
+
+	if (basex->ValueType == VAL_Float)
+	{
+		FxExpression *x = basex;
+		basex = NULL;
+		delete this;
+		return x;
+	}
+	else if (basex->ValueType == VAL_Int)
+	{
+		if (basex->isConstant())
+		{
+			ExpVal constval = basex->EvalExpression(NULL);
+			FxExpression *x = new FxConstant(constval.GetFloat(), ScriptPosition);
+			delete this;
+			return x;
+		}
+		return this;
+	}
+	else
+	{
+		ScriptPosition.Message(MSG_ERROR, "Numeric type expected");
+		delete this;
+		return NULL;
+	}
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+ExpVal FxFloatCast::EvalExpression (AActor *self)
+{
+	ExpVal baseval = basex->EvalExpression(self);
+	baseval.Float = baseval.GetFloat();
+	baseval.Type = VAL_Float;
+	return baseval;
+}
+
+
 //==========================================================================
 //
 //