Merge remote-tracking branch 'origin/issue64' into develop

Source/OpenTK/Input/JoystickHatState.cs

@@ -34,7 +34,7 @@ namespace OpenTK.Input
     /// <summary>
     /// Describes the state of a joystick hat.
     /// </summary>
-    public struct JoystickHatState
+    public struct JoystickHatState : IEquatable<JoystickHatState>
     {
         HatPosition position;
 
@@ -113,6 +113,58 @@ namespace OpenTK.Input
                     Position == HatPosition.DownRight;
             }
         }
+
+        /// <summary>
+        /// Returns a <see cref="System.String"/> that represents the current <see cref="OpenTK.Input.JoystickHatState"/>.
+        /// </summary>
+        /// <returns>A <see cref="System.String"/> that represents the current <see cref="OpenTK.Input.JoystickHatState"/>.</returns>
+        public override string ToString()
+        {
+            return String.Format(
+                "{{{0}{1}{2}{3}}}",
+                IsUp ? "U" : String.Empty,
+                IsLeft ? "L" : String.Empty,
+                IsDown ? "D" : String.Empty,
+                IsRight ? "R" : String.Empty);
+        }
+
+        /// <summary>
+        /// Serves as a hash function for a <see cref="OpenTK.Input.JoystickHatState"/> object.
+        /// </summary>
+        /// <returns>A hash code for this instance that is suitable for use in hashing algorithms and data structures such as a
+        /// hash table.</returns>
+        public override int GetHashCode()
+        {
+            return Position.GetHashCode();
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="System.Object"/> is equal to the current <see cref="OpenTK.Input.JoystickHatState"/>.
+        /// </summary>
+        /// <param name="obj">The <see cref="System.Object"/> to compare with the current <see cref="OpenTK.Input.JoystickHatState"/>.</param>
+        /// <returns><c>true</c> if the specified <see cref="System.Object"/> is equal to the current
+        /// <see cref="OpenTK.Input.JoystickHatState"/>; otherwise, <c>false</c>.</returns>
+        public override bool Equals(object obj)
+        {
+            return
+                obj is JoystickHatState &&
+                Equals((JoystickHatState)obj);
+        }
+
+        #region IEquatable<JoystickHatState> implementation
+
+        /// <summary>
+        /// Determines whether the specified <see cref="OpenTK.Input.JoystickHatState"/> is equal to the current <see cref="OpenTK.Input.JoystickHatState"/>.
+        /// </summary>
+        /// <param name="other">The <see cref="OpenTK.Input.JoystickHatState"/> to compare with the current <see cref="OpenTK.Input.JoystickHatState"/>.</param>
+        /// <returns><c>true</c> if the specified <see cref="OpenTK.Input.JoystickHatState"/> is equal to the current
+        /// <see cref="OpenTK.Input.JoystickHatState"/>; otherwise, <c>false</c>.</returns>
+        public bool Equals(JoystickHatState other)
+        {
+            return Position == other.Position;
+        }
+
+        #endregion
     }
 }
 

Source/OpenTK/Input/JoystickState.cs

@@ -145,9 +145,10 @@ namespace OpenTK.Input
                 sb.Append(String.Format("{0:f4}", GetAxis(JoystickAxis.Axis0 + i)));
             }
             return String.Format(
-                "{{Axes:{0}; Buttons: {1}; IsConnected: {2}}}",
+                "{{Axes:{0}; Buttons: {1}; Hat: {2}; IsConnected: {3}}}",
                 sb.ToString(),
                 Convert.ToString((int)buttons, 2).PadLeft(16, '0'),
+                hat0,
                 IsConnected);
         }
 
@@ -303,6 +304,11 @@ namespace OpenTK.Input
             {
                 equals &= GetAxisUnsafe(i) == other.GetAxisUnsafe(i);
             }
+            for (int i = 0; equals && i < MaxHats; i++)
+            {
+                JoystickHat hat = JoystickHat.Hat0 + i;
+                equals &= GetHat(hat).Equals(other.GetHat(hat));
+            }
             return equals;
         }
 

Source/OpenTK/Platform/LegacyJoystickDriver.cs

@@ -65,7 +65,10 @@ namespace OpenTK.Platform
                 if (caps.IsConnected && joysticks[i].Description == DisconnectedName)
                 {
                     // New joystick connected
-                    joysticks[i] = new LegacyJoystickDevice(i, caps.AxisCount, caps.ButtonCount);
+                    joysticks[i] = new LegacyJoystickDevice(
+                        i,
+                        caps.AxisCount + 2 * caps.HatCount,
+                        caps.ButtonCount);
                     //device.Description = Joystick.GetName(i);
                     joysticks[i].Description = ConnectedName;
                     
@@ -78,16 +81,41 @@ namespace OpenTK.Platform
                 }
 
                 JoystickState state = Joystick.GetState(i);
-                for (int axis_index = 0; axis_index < (int)caps.AxisCount; axis_index++)
+                for (int axis_index = 0; axis_index < caps.AxisCount; axis_index++)
                 {
                     JoystickAxis axis = JoystickAxis.Axis0 + axis_index;
                     joysticks[i].SetAxis(axis, state.GetAxis(axis));
                 }
-                for (int button_index = 0; button_index < (int)caps.ButtonCount; button_index++)
+                for (int button_index = 0; button_index < caps.ButtonCount; button_index++)
                 {
                     JoystickButton button = JoystickButton.Button0 + button_index;
                     joysticks[i].SetButton(button, state.GetButton(button) == ButtonState.Pressed);
                 }
+                for (int hat_index = 0; hat_index < caps.HatCount; hat_index++)
+                {
+                    // LegacyJoystickDriver report hats as pairs of axes
+                    // Make sure we have enough axes left for this mapping
+                    int axis_index = caps.AxisCount + 2 * hat_index;
+                    if (axis_index < JoystickState.MaxAxes)
+                    {
+                        JoystickHat hat = JoystickHat.Hat0 + hat_index;
+                        JoystickHatState hat_state = state.GetHat(hat);
+                        JoystickAxis axis = JoystickAxis.Axis0 + axis_index;
+                        float x = 0;
+                        float y = 0;
+                        if (hat_state.IsDown)
+                            y--;
+                        if (hat_state.IsUp)
+                            y++;
+                        if (hat_state.IsLeft)
+                            x--;
+                        if (hat_state.IsRight)
+                            x++;
+
+                        joysticks[i].SetAxis(axis, x);
+                        joysticks[i].SetAxis(axis + 1, y);
+                    }
+                }
             }
         }
 

Source/OpenTK/Platform/Windows/WinMMJoystick.cs

@@ -130,10 +130,18 @@ namespace OpenTK.Platform.Windows
 
                     // Make sure to reverse the vertical axes, so that +1 points up and -1 points down.
                     for (int axis = 0; axis < caps.NumAxes; axis++)
+                    {
+                        if (axis % 2 == 1)
+                        {
+                            stick.Details.Min[axis] = caps.GetMax(axis);
+                            stick.Details.Max[axis] = caps.GetMin(axis);
+                        }
+                        else
                         {
                             stick.Details.Min[axis] = caps.GetMin(axis);
                             stick.Details.Max[axis] = caps.GetMax(axis);
                         }
+                    }
 
                     if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
                     {
@@ -389,21 +397,42 @@ namespace OpenTK.Platform.Windows
                     else
                     {
                         // Use joyGetPosEx
-                        JoyInfoEx info = new JoyInfoEx();
+                        JoyInfoEx info_ex = new JoyInfoEx();
-                        info.Size = JoyInfoEx.SizeInBytes;
+                        info_ex.Size = JoyInfoEx.SizeInBytes;
-                        info.Flags = JoystickFlags.All;
+                        info_ex.Flags = JoystickFlags.All;
 
-                        JoystickError result = UnsafeNativeMethods.joyGetPosEx(device_index, ref info);
+                        JoystickError result = UnsafeNativeMethods.joyGetPosEx(device_index, ref info_ex);
                         if (result == JoystickError.NoError)
                         {
                             for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
                             {
-                                state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
+                                state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info_ex.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
                             }
 
                             for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
                             {
-                                state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
+                                state.SetButton(JoystickButton.Button0 + i, (info_ex.Buttons & 1 << i) != 0);
+                            }
+
+                            for (int i = 0; i < stick.Details.Capabilities.HatCount; i++)
+                            {
+                                // A discrete POV returns specific values for left, right, etc.
+                                // A continuous POV returns an integer indicating an angle in degrees * 100, e.g. 18000 == 180.00 degrees.
+                                // The vast majority of joysticks have discrete POVs, so we'll treat all of them as discrete for simplicity.
+                                if ((JoystickPovPosition)info_ex.Pov != JoystickPovPosition.Centered)
+                                {
+                                    HatPosition hatpos = HatPosition.Centered;
+                                    if (info_ex.Pov < 4500 || info_ex.Pov >= 31500)
+                                        hatpos |= HatPosition.Up;
+                                    if (info_ex.Pov >= 4500 && info_ex.Pov < 13500)
+                                        hatpos |= HatPosition.Right;
+                                    if (info_ex.Pov >= 13500 && info_ex.Pov < 22500)
+                                        hatpos |= HatPosition.Down;
+                                    if (info_ex.Pov >= 22500 && info_ex.Pov < 31500)
+                                        hatpos |= HatPosition.Left;
+
+                                    state.SetHat(JoystickHat.Hat0 + i, new JoystickHatState(hatpos));
+                                }
                             }
 
                             state.SetIsConnected(true);