InputCommon and nJoy: Moved functions to InputCommon, to be shared with the Wiimote plugin

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2147 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/InputCommon/Src/XInput.cpp

@@ -0,0 +1,136 @@
+//////////////////////////////////////////////////////////////////////////////////////////
+//
+// Licensetype: GNU General Public License (GPL)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+//
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+//
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+//
+//////////////////////////////////////////////////////////////////////////////////////////
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// File description
+/* ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+   Function: This file will get the status of the analog triggers of any connected XInput device.
+   This code was made with the help of SimpleController.cpp in the June 2008 Microsoft DirectX SDK
+   Samples.
+
+///////////////////////////////////////////////////// */
+
+#ifdef _WIN32
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Includes
+// ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+#include <windows.h>
+#include <XInput.h> // XInput API
+
+#include "SDL.h" // Local
+///////////////////////////////////////////////
+
+
+namespace XInput
+{
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Declarations
+// ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+
+#define MAX_CONTROLLERS 4  // XInput handles up to 4 controllers 
+
+struct CONTROLER_STATE
+{
+    XINPUT_STATE state;
+    bool bConnected;
+};
+CONTROLER_STATE g_Controllers[MAX_CONTROLLERS];
+///////////////////////////////////////////////
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Init
+// ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+/* Function: Calculate the number of connected XInput devices
+   Todo: Implement this to figure out if there are multiple XInput controllers connected,
+   we currently only try to connect to XInput device 0 */
+void Init()
+{
+    // Init state
+    //ZeroMemory( g_Controllers, sizeof( CONTROLER_STATE ) * MAX_CONTROLLERS );
+
+	// Declaration
+	DWORD dwResult;
+
+	// Calculate the number of connected XInput devices
+	for( DWORD i = 0; i < MAX_CONTROLLERS; i++ )
+    {
+        // Simply get the state of the controller from XInput.
+        dwResult = XInputGetState( i, &g_Controllers[i].state );
+
+        if( dwResult == ERROR_SUCCESS )
+            g_Controllers[i].bConnected = true;
+        else
+            g_Controllers[i].bConnected = false;
+    }
+
+}	
+///////////////////////////////////////////
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Get the trigger status
+// ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+int GetXI(int Controller, int Button)
+{
+	// Update the internal status
+    DWORD dwResult;
+	dwResult = XInputGetState( Controller, &g_Controllers[Controller].state );
+
+	if( dwResult != ERROR_SUCCESS ) return -1;
+
+	switch(Button)
+	{
+	case InputCommon::XI_TRIGGER_L:
+		return g_Controllers[0].state.Gamepad.bLeftTrigger;
+
+	case InputCommon::XI_TRIGGER_R:
+		return g_Controllers[0].state.Gamepad.bRightTrigger;
+
+	default:
+		return 0;
+	}
+}
+///////////////////////////////////////////
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Check if a certain controller is connected
+// ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
+bool IsConnected(int Controller)
+{
+	DWORD dwResult = XInputGetState( Controller, &g_Controllers[Controller].state );
+
+	// Update the connected status
+	if( dwResult == ERROR_SUCCESS )
+		return true;
+	else
+		return false;
+}
+///////////////////////////////////////////
+
+} // XInput
+
+#endif