单人骑行

Assets/Mapbox/Unity/Map/TileProviders/AbstractTileProvider.cs

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+using System;
+using System.Collections.Generic;
+using Mapbox.Map;
+using Mapbox.Unity.Map.Interfaces;
+using UnityEngine;
+
+namespace Mapbox.Unity.Map.TileProviders
+{
+	public class ExtentArgs : EventArgs
+	{
+		//TODO: Override GetHashCode for UnwrappedTileId
+		public HashSet<UnwrappedTileId> activeTiles;
+	}
+
+	public abstract class AbstractTileProvider : MonoBehaviour, ITileProvider
+	{
+		public event EventHandler<ExtentArgs> ExtentChanged;
+
+		protected IMap _map;
+		protected ExtentArgs _currentExtent = new ExtentArgs();
+
+		protected ITileProviderOptions _options;
+		public ITileProviderOptions Options
+		{
+			get
+			{
+				return _options;
+			}
+		}
+
+		public virtual void Initialize(IMap map)
+		{
+			_map = map;
+			OnInitialized();
+		}
+
+		public virtual void OnExtentChanged()
+		{
+			if (ExtentChanged != null)
+			{
+				ExtentChanged(this, _currentExtent);
+			}
+		}
+
+		public abstract void OnInitialized();
+		public abstract void UpdateTileExtent();
+
+		public abstract bool Cleanup(UnwrappedTileId tile);
+
+		public virtual void SetOptions(ITileProviderOptions options)
+		{
+			_options = options;
+		}
+
+		public virtual void UpdateTileProvider()
+		{
+
+		}
+	}
+}