public override object Result(LogicExecutionState state)
{
var obj = this.Expression.Result(state);
if (obj is float)
{
switch (this.Op)
{
case "-":
return(-(float)obj);
default:
throw new InvalidOperationException();
}
}
switch (this.Op)
{
case "-":
return(LogicBuiltins.Negate(new List <object> {
obj
}));
default:
throw new InvalidOperationException();
}
}
public static object DoAddition(object leftObj, string op, object rightObj)
{
if (leftObj is float && rightObj is float)
{
switch (op)
{
case "+":
return((float)leftObj + (float)rightObj);
case "-":
return((float)leftObj - (float)rightObj);
default:
throw new InvalidOperationException();
}
}
if (leftObj is string)
{
switch (op)
{
case "+":
return((string)leftObj + rightObj);
default:
throw new InvalidOperationException();
}
}
if (rightObj is string)
{
switch (op)
{
case "+":
return(leftObj + (string)rightObj);
default:
throw new InvalidOperationException();
}
}
switch (op)
{
case "+":
return(LogicBuiltins.Add(new List <object> {
leftObj, rightObj
}));
case "-":
return(LogicBuiltins.Subtract(new List <object> {
leftObj, rightObj
}));
default:
throw new InvalidOperationException();
}
}
public override Expression Compile(ParameterExpression stateParameterExpression, LabelTarget returnTarget)
{
switch (this.Op)
{
case "-":
return
(Expr.Invoke(
(Expression <Func <object, object> >)
(x => x is float? - (float)x: LogicBuiltins.Negate(new List <object> {
x
})),
Expr.Convert(this.Expression.Compile(stateParameterExpression, returnTarget), typeof(object))));
default:
throw new InvalidOperationException();
}
}
public static object DoMultiply(object leftObj, string op, object rightObj)
{
if (leftObj is float && rightObj is float)
{
switch (op)
{
case "*":
return((float)leftObj * (float)rightObj);
case "/":
return((float)leftObj / (float)rightObj);
default:
throw new InvalidOperationException();
}
}
if (op == "*")
{
if ((leftObj is Vector2 || leftObj is Vector3 || leftObj is Vector4) && rightObj is Matrix)
{
return(LogicBuiltins.Transform(leftObj, rightObj));
}
if (leftObj is Matrix && (rightObj is Vector2 || rightObj is Vector3 || rightObj is Vector4))
{
return(LogicBuiltins.Transform(rightObj, leftObj));
}
}
switch (op)
{
case "*":
return(LogicBuiltins.Multiply(new List <object> {
leftObj, rightObj
}));
case "/":
return(LogicBuiltins.Divide(new List <object> {
leftObj, rightObj
}));
default:
throw new InvalidOperationException();
}
}
public static object DoCall(string name, IEnumerable <object> arguments, LogicExecutionState state)
{
var structType = state.Structures.FirstOrDefault(x => x.Name == name);
if (structType != null)
{
return(new LogicStructureInstance(structType));
}
var values = arguments.ToList();
switch (name)
{
case "float":
return(Convert.ToSingle(values[0]));
case "string":
return(Convert.ToString(values[0]));
case "float2":
return(new Vector2(Convert.ToSingle(values[0]), Convert.ToSingle(values[1])));
case "float3":
if (values[0] is Vector2)
{
return(new Vector3((Vector2)values[0], Convert.ToSingle(values[1])));
}
return(new Vector3(Convert.ToSingle(values[0]), Convert.ToSingle(values[1]), Convert.ToSingle(values[2])));
case "float4":
if (values[0] is Vector3)
{
return(new Vector4((Vector3)values[0], Convert.ToSingle(values[1])));
}
return(new Vector4(Convert.ToSingle(values[0]), Convert.ToSingle(values[1]), Convert.ToSingle(values[2]), Convert.ToSingle(values[3])));
case "matrix":
return(new Matrix());
}
switch (name)
{
case "max":
return(LogicBuiltins.Max(values));
case "min":
return(LogicBuiltins.Min(values));
case "sin":
return(LogicBuiltins.Sin(values));
case "cos":
return(LogicBuiltins.Cos(values));
case "tan":
return(LogicBuiltins.Tan(values));
case "atan":
return(LogicBuiltins.Atan(values));
case "atan2":
return(LogicBuiltins.Atan2(values));
case "lerp":
return(LogicBuiltins.Lerp(values));
case "abs":
return(LogicBuiltins.Abs(values));
case "normalize":
return(LogicBuiltins.Normalize(values));
case "ceil":
return(LogicBuiltins.Ceiling(values));
case "floor":
return(LogicBuiltins.Floor(values));
case "round":
return(LogicBuiltins.Round(values));
case "distance":
return(LogicBuiltins.Distance(values));
case "distancesqr":
return(LogicBuiltins.DistanceSquared(values));
case "matident":
return(Matrix.Identity);
case "mattrans":
return(Matrix.CreateTranslation((Vector3)values[0]));
case "matrotx":
return(Matrix.CreateRotationX(Convert.ToSingle(values[0])));
case "matroty":
return(Matrix.CreateRotationY(Convert.ToSingle(values[0])));
case "matrotz":
return(Matrix.CreateRotationZ(Convert.ToSingle(values[0])));
case "matscale":
return(Matrix.CreateScale(Convert.ToSingle(values[0])));
case "pi":
return(MathHelper.Pi);
default:
if (state.AppFunctions.ContainsKey(name))
{
return(state.AppFunctions[name](values.ToArray()));
}
break;
}
var userFunction = state.Functions.FirstOrDefault(x => x.Name == name);
if (userFunction != null)
{
throw new NotImplementedException();
}
throw new InvalidOperationException("Function missing: " + name);
}
