Explisit Struct Layout

1

Hi I have the follow code.

[StructLayout(LayoutKind.Explicit)]
    public struct BlockInt
    {
        [FieldOffset(0)]
        public uint Block; //Contains the Entire Block Data

        [FieldOffset(0)]
        public byte Type; //the Block type. Ie Resource, Building Matrerial, Plant, Gas, Fluid
        [FieldOffset(1)]
        public byte SubType; //The sub type. Ie if the type is Resource the sub type could be Iron, Coal, etc
        [FieldOffset(0)]
        public ushort BlockId; //The block Id. A combanation of both the Type, and Subtype

        [FieldOffset(2)]
        public byte Orientation; //the orientation of the block
        [FieldOffset(3)]
        public byte Data; //the data that the block can contain
    }

I have 2 questions.
First can I use [StructLayout(LayoutKind.Explicit)] on all platforms or do some platforms not have access to the InteropServices namespace?

And seconds whats the overhead in memory of having this vers just a single uint?

Thx

2

It should work on all platforms, as far as I know. There shouldn’t be any overhead in memory, except for the one time cost of the reflection information for the type, but that would be minor.

3

Thanks that defiantly good new for me.