SmartInteractSystem.cs

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using System.Collections.Generic;
 
namespace Terraria.GameContent.ObjectInteractions;
 
public class SmartInteractSystem
{
    private List<ISmartInteractCandidateProvider> _candidateProvidersByOrderOfPriority = new List<ISmartInteractCandidateProvider>();
 
    private List<ISmartInteractBlockReasonProvider> _blockProviders = new List<ISmartInteractBlockReasonProvider>();
 
    private List<ISmartInteractCandidate> _candidates = new List<ISmartInteractCandidate>();
 
    public SmartInteractSystem()
    {
        _candidateProvidersByOrderOfPriority.Add(new PotionOfReturnSmartInteractCandidateProvider());
        _candidateProvidersByOrderOfPriority.Add(new ProjectileSmartInteractCandidateProvider());
        _candidateProvidersByOrderOfPriority.Add(new NPCSmartInteractCandidateProvider());
        _candidateProvidersByOrderOfPriority.Add(new TileSmartInteractCandidateProvider());
        _blockProviders.Add(new BlockBecauseYouAreOverAnImportantTile());
    }
 
    public void Clear()
    {
        _candidates.Clear();
        foreach (ISmartInteractCandidateProvider item in _candidateProvidersByOrderOfPriority)
        {
            item.ClearSelfAndPrepareForCheck();
        }
    }
 
    public void RunQuery(SmartInteractScanSettings settings)
    {
        Clear();
        foreach (ISmartInteractBlockReasonProvider blockProvider in _blockProviders)
        {
            if (blockProvider.ShouldBlockSmartInteract(settings))
            {
                return;
            }
        }
        foreach (ISmartInteractCandidateProvider item in _candidateProvidersByOrderOfPriority)
        {
            if (item.ProvideCandidate(settings, out var candidate))
            {
                _candidates.Add(candidate);
                if (candidate.DistanceFromCursor == 0f)
                {
                    break;
                }
            }
        }
        ISmartInteractCandidate smartInteractCandidate = null;
        foreach (ISmartInteractCandidate candidate2 in _candidates)
        {
            if (smartInteractCandidate == null || smartInteractCandidate.DistanceFromCursor > candidate2.DistanceFromCursor)
            {
                smartInteractCandidate = candidate2;
            }
        }
        smartInteractCandidate?.WinCandidacy();
    }
}