Add Android touch handler.

Assets/Cryville/Common/Unity/Input/AndroidTouchHandler.cs

@@ -0,0 +1,92 @@
+using System;
+using UnityEngine;
+
+namespace Cryville.Common.Unity.Input {
+	public class AndroidTouchHandler : InputHandler {
+		readonly AndroidTouchListener _listener;
+		readonly AndroidJavaClass _systemClock;
+
+		public AndroidTouchHandler() {
+			if (Environment.OSVersion.Platform != PlatformID.Unix)
+				throw new NotSupportedException("Android touch is not supported on this device");
+			_systemClock = new AndroidJavaClass("android.os.SystemClock");
+			new AndroidJavaClass("com.unity3d.player.UnityPlayer")
+				.GetStatic<AndroidJavaObject>("currentActivity")
+				.Get<AndroidJavaObject>("mUnityPlayer")
+				.Call("setOnTouchListener", _listener = new AndroidTouchListener(this));
+		}
+
+		protected override void Activate() {
+			_listener.Activated = true;
+		}
+
+		protected override void Deactivate() {
+			_listener.Activated = false;
+		}
+
+		public override void Dispose(bool disposing) {
+			if (disposing) {
+				Deactivate();
+			}
+		}
+
+		public override bool IsNullable(int type) {
+			if (type != 0) throw new ArgumentOutOfRangeException("type");
+			return true;
+		}
+
+		public override byte GetDimension(int type) {
+			if (type != 0) throw new ArgumentOutOfRangeException("type");
+			return 2;
+		}
+
+		public override string GetTypeName(int type) {
+			switch (type) {
+				case 0: return "Android Touch";
+				default: throw new ArgumentOutOfRangeException("type");
+			}
+		}
+
+		public override double GetCurrentTimestamp() {
+			return _systemClock.CallStatic<long>("uptimeMillis") / 1000.0;
+		}
+
+		class AndroidTouchListener : AndroidJavaProxy {
+			public bool Activated { get; set; }
+
+			readonly AndroidTouchHandler _handler;
+
+			public AndroidTouchListener(AndroidTouchHandler handler) : base("android.view.View$OnTouchListener") {
+				_handler = handler;
+			}
+
+#pragma warning disable IDE1006
+#pragma warning disable IDE0060
+			public bool onTouch(AndroidJavaObject v, AndroidJavaObject e) {
+				if (!Activated) return false;
+				try {
+					int pointerCount = e.Call<int>("getPointerCount");
+					for (int i = 0; i < pointerCount; i++) {
+						int id = e.Call<int>("getPointerId", i);
+						double time = e.Call<long>("getEventTime") / 1000.0;
+						int action = e.Call<int>("getActionMasked");
+						Vector2 pos = UnityCameraUtils.ScreenToWorldPoint(new Vector2(
+							e.Call<float>("getX", i),
+							e.Call<float>("getY", i)
+						));
+						_handler.Feed(0, id, new InputVector(time, pos));
+						if (action == 1 /*ACTION_UP*/ || action == 3 /*ACTION_CANCEL*/ || (action == 6 /*ACTION_POINTER_UP*/ && e.Call<int>("getActionIndex") == i)) {
+							_handler.Feed(0, id, new InputVector(time));
+						}
+					}
+				}
+				catch (Exception ex) {
+					Logger.Log("main", 4, "Input", "An error occured while handling an Android touch event: {0}", ex);
+				}
+				return false;
+			}
+#pragma warning restore IDE0060
+#pragma warning restore IDE1006
+		}
+	}
+}

Assets/Cryville/Common/Unity/Input/AndroidTouchHandler.cs.meta

@@ -0,0 +1,11 @@
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+guid: b0e1f8fc8f7607246b0012ad74fa0aeb
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Cryville/Common/Unity/Input/InputManager.cs

@@ -6,6 +6,7 @@ namespace Cryville.Common.Unity.Input {
 	public class InputManager {
 		static readonly HashSet<Type> HandlerRegistries = new HashSet<Type> {
 			typeof(WindowsPointerHandler),
+			typeof(AndroidTouchHandler),
 			typeof(UnityKeyHandler<UnityKeyboardReceiver>),
 			typeof(UnityKeyHandler<UnityMouseButtonReceiver>),
 			typeof(UnityMouseHandler),