implement single tap touchscreen (#34)

Ryujinx.Core/Hid.cs

@@ -33,7 +33,7 @@ namespace Ryujinx.Core
         }
         */
 
-        private const int Hid_Num_Entries = 16;
+        private const int Hid_Num_Entries = 17;
         private Switch Ns;
         private long SharedMemOffset;
 
@@ -64,8 +64,7 @@ namespace Ryujinx.Core
                 TouchScreen.Header.MaxEntryIndex = (ulong)Hid_Num_Entries - 1;
                 TouchScreen.Header.Timestamp = (ulong)Environment.TickCount;
                 
-                //TODO: Write this structure when the input is implemented
+                Marshal.StructureToPtr(TouchScreen, HidPtr, false);
-                //Marshal.StructureToPtr(TouchScreen, HidPtr, false);
 
                 InnerOffset += (uint)Marshal.SizeOf(typeof(HidTouchScreen));
                 HidPtr = new IntPtr(Ns.Ram.ToInt64() + (uint)SharedMemOffset + InnerOffset);
@@ -170,16 +169,57 @@ namespace Ryujinx.Core
             InnerOffset += (uint)Marshal.SizeOf(typeof(HidControllerLayoutHeader)) + (uint)((uint)(ControllerLayoutHeader.LatestEntry) * Marshal.SizeOf(typeof(HidControllerInputEntry)));
             HidPtr = new IntPtr(Ns.Ram.ToInt64() + (uint)SharedMemOffset + InnerOffset);
 
-            HidControllerInputEntry ControllerInputEntry = new HidControllerInputEntry();
+            HidControllerInputEntry ControllerInputEntry = new HidControllerInputEntry
-            ControllerInputEntry.Timestamp = (ulong)Environment.TickCount;
+            {
-            ControllerInputEntry.Timestamp_2 = (ulong)Environment.TickCount;
+                Timestamp = (ulong)Environment.TickCount,
-            ControllerInputEntry.Buttons = (ulong)Buttons;
+                Timestamp_2 = (ulong)Environment.TickCount,
-            ControllerInputEntry.Joysticks = new JoystickPosition[(int)HidControllerJoystick.Joystick_Num_Sticks];
+                Buttons = (ulong)Buttons,
+                Joysticks = new JoystickPosition[(int)HidControllerJoystick.Joystick_Num_Sticks]
+            };
             ControllerInputEntry.Joysticks[(int)HidControllerJoystick.Joystick_Left] = LeftJoystick;
             ControllerInputEntry.Joysticks[(int)HidControllerJoystick.Joystick_Right] = RightJoystick;
             ControllerInputEntry.ConnectionState = (ulong)(HidControllerConnectionState.Controller_State_Connected | HidControllerConnectionState.Controller_State_Wired);
 
             Marshal.StructureToPtr(ControllerInputEntry, HidPtr, false);
         }
+
+        public void SendTouchPoint(HidTouchScreenEntryTouch TouchPoint)
+        {
+            uint InnerOffset = (uint)Marshal.SizeOf(typeof(HidSharedMemHeader));
+
+            IntPtr HidPtr = new IntPtr(Ns.Ram.ToInt64() + (uint)SharedMemOffset + InnerOffset);
+
+            HidTouchScreenHeader OldTouchScreenHeader = (HidTouchScreenHeader)Marshal.PtrToStructure(HidPtr,typeof(HidTouchScreenHeader));
+
+            HidTouchScreenHeader TouchScreenHeader = new HidTouchScreenHeader()
+            {
+                TimestampTicks = (ulong)Environment.TickCount,
+                NumEntries = (ulong)Hid_Num_Entries,
+                MaxEntryIndex = (ulong)Hid_Num_Entries - 1,
+                Timestamp = (ulong)Environment.TickCount,
+                LatestEntry = OldTouchScreenHeader.LatestEntry < Hid_Num_Entries-1 ? OldTouchScreenHeader.LatestEntry + 1 : 0
+            };
+
+            Marshal.StructureToPtr(TouchScreenHeader, HidPtr, false);
+
+            InnerOffset += (uint)Marshal.SizeOf(typeof(HidTouchScreenHeader))
+                + (uint)((uint)(OldTouchScreenHeader.LatestEntry) * Marshal.SizeOf(typeof(HidTouchScreenEntry)));
+            HidPtr = new IntPtr(Ns.Ram.ToInt64() + (uint)SharedMemOffset + InnerOffset);            
+
+            HidTouchScreenEntry hidTouchScreenEntry = new HidTouchScreenEntry()
+            {
+                Header = new HidTouchScreenEntryHeader()
+                {
+                    Timestamp = (ulong)Environment.TickCount,
+                    NumTouches = 1
+                },
+                Touches = new HidTouchScreenEntryTouch[16]
+            };
+
+            //Only supports single touch
+            hidTouchScreenEntry.Touches[0] = TouchPoint;
+
+            Marshal.StructureToPtr(hidTouchScreenEntry, HidPtr, false);
+        }
     }
 }

Ryujinx.Core/Hid/HidTouchScreen.cs

@@ -51,4 +51,5 @@ namespace Ryujinx.Core
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x3C0)]
         public byte[] Padding;
     }
+
 }

Ryujinx.Core/Switch.cs

@@ -52,6 +52,11 @@ namespace Ryujinx.Core
             Hid.SendControllerButtons(ControllerId, Layout, Buttons, LeftJoystick, RightJoystick);
         }
         
+        public void SendTouchScreenEntry(HidTouchScreenEntryTouch TouchPoint)
+        {
+            Hid.SendTouchPoint(TouchPoint);
+        }
+
         internal virtual void OnFinish(EventArgs e)
         {
             Finish?.Invoke(this, e);

Ryujinx/Ui/GLScreen.cs

@@ -296,6 +296,7 @@ void main(void) {
             JoystickPosition LeftJoystick;
             JoystickPosition RightJoystick;
 
+
             if (Keyboard[OpenTK.Input.Key.Escape]) this.Exit();
 
             //RightJoystick
@@ -346,6 +347,29 @@ void main(void) {
                 DY = RightJoystickDY
             };
 
+            //Get screen touch position from left mouse click
+            //Opentk always captures mouse events, even if out of focus, so check if window is focused.
+            if (Mouse != null && Focused)
+                if (Mouse.GetState().LeftButton == OpenTK.Input.ButtonState.Pressed)
+                {
+                    HidTouchScreenEntryTouch CurrentPoint = new HidTouchScreenEntryTouch
+                    {
+                        Timestamp = (uint)Environment.TickCount,
+                        X = (uint)Mouse.X,
+                        Y = (uint)Mouse.Y,
+
+                        //Placeholder values till more data is acquired
+                        DiameterX = 10,
+                        DiameterY = 10,
+                        Angle = 90,
+
+                        //Only support single touch
+                        TouchIndex = 0,
+                    };
+                    if (Mouse.X > -1 && Mouse.Y > -1)
+                        Ns.SendTouchScreenEntry(CurrentPoint);
+                }
+
             //We just need one pair of JoyCon because it's emulate by the keyboard.
             Ns.SendControllerButtons(HidControllerID.CONTROLLER_HANDHELD, HidControllerLayouts.Main, CurrentButton, LeftJoystick, RightJoystick);
         }