C#•6mo ago•

19 replies

Use of inline arrays to model arrays of structs

For a native type with the following shape:

public struct CHRDATA {
    public uint hp;
    public uint mp; // ... hundreds more fields
}
public struct SAVEDATA {
    public CHRDATA chr1;
    public CHRDATA chr2;   
    public CHRDATA chr3; // ... tens more entries
}

public struct CHRDATA {
    public uint hp;
    public uint mp; // ... hundreds more fields
}
public struct SAVEDATA {
    public CHRDATA chr1;
    public CHRDATA chr2;   
    public CHRDATA chr3; // ... tens more entries
}

it occurred to me I could represent the sequential

CHRDATA

CHRDATA

s with an

InlineArray

InlineArray

as such:

[InlineArray(80)]
public struct CHRDATA_ARRAY {
    private CHRDATA _c;
}
public struct SAVEDATA {
    public CHRDATA_ARRAY chrs;
}

[InlineArray(80)]
public struct CHRDATA_ARRAY {
    private CHRDATA _c;
}
public struct SAVEDATA {
    public CHRDATA_ARRAY chrs;
}

which raises a few questions, since I'm unfamiliar with the feature:
1) is this legal? can you make

InlineArrays

InlineArrays

of blittable structs, or should usage of

InlineArray

InlineArray

be restricted to primitives? (i.e.

int

int

float

float

)
2) does

chrs[62].hp = 300;

chrs[62].hp = 300;

in the above case operate on a copy or actually mutate the relevant part of

SAVEDATA

SAVEDATA

C#•6mo ago•

19 replies

peppy

Use of inline arrays to model arrays of structs

For a native type with the following shape:

public struct CHRDATA {
    public uint hp;
    public uint mp; // ... hundreds more fields
}
public struct SAVEDATA {
    public CHRDATA chr1;
    public CHRDATA chr2;   
    public CHRDATA chr3; // ... tens more entries
}

public struct CHRDATA {
    public uint hp;
    public uint mp; // ... hundreds more fields
}
public struct SAVEDATA {
    public CHRDATA chr1;
    public CHRDATA chr2;   
    public CHRDATA chr3; // ... tens more entries
}

it occurred to me I could represent the sequential

CHRDATA

CHRDATA

s with an

InlineArray

InlineArray

as such:

[InlineArray(80)]
public struct CHRDATA_ARRAY {
    private CHRDATA _c;
}
public struct SAVEDATA {
    public CHRDATA_ARRAY chrs;
}

[InlineArray(80)]
public struct CHRDATA_ARRAY {
    private CHRDATA _c;
}
public struct SAVEDATA {
    public CHRDATA_ARRAY chrs;
}

which raises a few questions, since I'm unfamiliar with the feature:
1) is this legal? can you make

InlineArrays

InlineArrays

of blittable structs, or should usage of

InlineArray

InlineArray

be restricted to primitives? (i.e.

int

int

float

float

)
2) does

chrs[62].hp = 300;

chrs[62].hp = 300;

in the above case operate on a copy or actually mutate the relevant part of

SAVEDATA

SAVEDATA

Use of inline arrays to model arrays of structs

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Use of inline arrays to model arrays of structs

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