Add IsGroup to PlayerInfo

[ScipioWright]

I did not test this because I haven't gone through the process of building it before. It looks like the one above it so it probably works fine.

[BadMagic100]

On principle a unit test for this would be good, however it's trivial enough that it's probably fine.

[BadMagic100]

Oh also this could and probably should be a property rather than a method

[ScipioWright]

Sorry, not familiar enough with the syntax. Would that be something like this?

public bool IsGroup { get; set; } = GroupMembers != null && GroupMembers.Length > 0;

[BadMagic100]

public bool IsGroup => GroupMembers != null && GroupMembers.Length > 0;

Above would be the best way to go, read-only property with an expression body syntax

[BadMagic100]

For educational purposes yours would allow the outside world to set it, and additionally it would be set when the instance is created instead of evaluated on request.

The most verbose correct way would be like this with a number of more concise intermediate options.

public bool IsGroup
{
    get
    {
        return GroupMembers != null && GroupMembers.Length > 0;
    }
}