crystall-punk-14/Content.Server/Objectives/Systems/RoleRequirementSystem.cs

using Content.Server.Objectives.Components;
using Content.Shared.Objectives.Components;
using Content.Shared.Whitelist;

namespace Content.Server.Objectives.Systems;

/// <summary>
/// Handles role requirement for objectives that require a certain (probably antagonist) role(s).
/// </summary>
public sealed class RoleRequirementSystem : EntitySystem
{
    [Dependency] private readonly EntityWhitelistSystem _whitelistSystem = default!;
    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<RoleRequirementComponent, RequirementCheckEvent>(OnCheck);
    }

    private void OnCheck(EntityUid uid, RoleRequirementComponent comp, ref RequirementCheckEvent args)
    {
        if (args.Cancelled)
            return;

        if (_whitelistSystem.IsWhitelistFail(comp.Roles, args.MindId))
            args.Cancelled = true;
    }
}