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using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using StardewModdingAPI.Framework.StateTracking.FieldWatchers;
using StardewValley;
using StardewValley.Buildings;
using StardewValley.Locations;
using StardewValley.TerrainFeatures;
using Object = StardewValley.Object;
namespace StardewModdingAPI.Framework.StateTracking
{
/// <summary>Tracks changes to a location's data.</summary>
internal class LocationTracker : IWatcher
{
/*********
** Fields
*********/
/// <summary>The underlying watchers.</summary>
private readonly List<IWatcher> Watchers = new List<IWatcher>();
/*********
** Accessors
*********/
/// <summary>Whether the value changed since the last reset.</summary>
public bool IsChanged => this.Watchers.Any(p => p.IsChanged);
/// <summary>The tracked location.</summary>
public GameLocation Location { get; }
/// <summary>Tracks added or removed buildings.</summary>
public ICollectionWatcher<Building> BuildingsWatcher { get; }
/// <summary>Tracks added or removed debris.</summary>
public ICollectionWatcher<Debris> DebrisWatcher { get; }
/// <summary>Tracks added or removed large terrain features.</summary>
public ICollectionWatcher<LargeTerrainFeature> LargeTerrainFeaturesWatcher { get; }
/// <summary>Tracks added or removed NPCs.</summary>
public ICollectionWatcher<NPC> NpcsWatcher { get; }
/// <summary>Tracks added or removed objects.</summary>
public IDictionaryWatcher<Vector2, Object> ObjectsWatcher { get; }
/// <summary>Tracks added or removed terrain features.</summary>
public IDictionaryWatcher<Vector2, TerrainFeature> TerrainFeaturesWatcher { get; }
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="location">The location to track.</param>
public LocationTracker(GameLocation location)
{
this.Location = location;
// init watchers
this.BuildingsWatcher = location is BuildableGameLocation buildableLocation ? WatcherFactory.ForNetCollection(buildableLocation.buildings) : WatcherFactory.ForImmutableCollection<Building>();
this.DebrisWatcher = WatcherFactory.ForNetCollection(location.debris);
this.LargeTerrainFeaturesWatcher = WatcherFactory.ForNetCollection(location.largeTerrainFeatures);
this.NpcsWatcher = WatcherFactory.ForNetCollection(location.characters);
this.ObjectsWatcher = WatcherFactory.ForNetDictionary(location.netObjects);
this.TerrainFeaturesWatcher = WatcherFactory.ForNetDictionary(location.terrainFeatures);
this.Watchers.AddRange(new IWatcher[]
{
this.BuildingsWatcher,
this.DebrisWatcher,
this.LargeTerrainFeaturesWatcher,
this.NpcsWatcher,
this.ObjectsWatcher,
this.TerrainFeaturesWatcher
});
}
/// <summary>Stop watching the player fields and release all references.</summary>
public void Dispose()
{
foreach (IWatcher watcher in this.Watchers)
watcher.Dispose();
}
/// <summary>Update the current value if needed.</summary>
public void Update()
{
foreach (IWatcher watcher in this.Watchers)
watcher.Update();
}
/// <summary>Set the current value as the baseline.</summary>
public void Reset()
{
foreach (IWatcher watcher in this.Watchers)
watcher.Reset();
}
}
}
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