// Input.cpp: implementation of the CInput class.
//
//////////////////////////////////////////////////////////////////////

#include "Input.h"
#include "application.h"

//#define INITGUID

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CInput::CInput()
{
	mouse.x = 320;
	mouse.y = 240;
}

CInput::~CInput()
{
	// release DirectInput object
	if (bDirectInput)
	{
		lpdikey->Unacquire();
		lpdikey->Release();

		lpdimouse->Unacquire();
		lpdimouse->Release();

		lpdi->Release();
	}
	OutputDebugString("CInput destructor\n");
}

void CInput::Update()
{
	if (bDirectInput)
	{
		// get current state of keys
		lpdikey->GetDeviceState(256, keys);

		lpdimouse->GetDeviceState(sizeof(DIMOUSESTATE), &mouse_state);

		mouse.x += mouse_state.lX;
		mouse.y += mouse_state.lY;
		mouse.wheel = mouse_state.lZ;
	}
}

bool CInput::IsKeyDown(int key)
{
	if (bDirectInput)
		return ((keys[key] & 0x80) != 0);

	// if we don't use DirectInput we must reset the state of the key
	bool bReturn = (keys[key] != 0);
	keys[key] = false;

	return bReturn;
}

// This function will be called when the application gets a WM_KEYDOWN
// or WM_KEYUP message
void CInput::SetKey(int key, bool bDown)
{
	//pLog->Log("Key %d was pressed", key);
	keys[key] = bDown;
}

bool CInput::Init()
{
	// reset the keys array
	bDirectInput = false;
	Reset();

	pApp->pLog->Log("CInput::Init()");

#ifdef USE_DINPUT

	if (DirectInputCreate(pApp->hInst, DIRECTINPUT_VERSION, &lpdi, NULL) != DI_OK)
	{
		pLog->Log("\tInitialization of DirectInput failed!");
		bDirectInput = false;

		// use alternative method to get input
	}
	else
	{
		bDirectInput = true;
		pLog->Log("\tInit of DirectInput object successful");

		if (lpdi->CreateDevice(GUID_SysKeyboard, &lpdikey, NULL) != DI_OK)
		{
			pLog->Log("\tDirectInput CreateDevice failed!");
			lpdi->Release();
			bDirectInput = false;
		}
		else
		{
			pLog->Log("\tCreateDevice for keyboard successful!");

			lpdikey->SetCooperativeLevel(pView->hWnd, 
				DISCL_BACKGROUND | DISCL_NONEXCLUSIVE);
			lpdikey->SetDataFormat(&c_dfDIKeyboard);
			lpdikey->Acquire();
		}

		// setup the mouse
		lpdi->CreateDevice(GUID_SysMouse, &lpdimouse, NULL);
		lpdimouse->SetCooperativeLevel(pView->hWnd, 
			DISCL_BACKGROUND | DISCL_NONEXCLUSIVE);
		lpdimouse->SetDataFormat(&c_dfDIMouse);

		lpdimouse->Acquire();

		pLog->Log("\tDirectInput Mouse successfully created");

		pLog->Log("Finished");

	}
#endif // USE_DINPUT
	return true;
}

void CInput::Reset()
{
	memset(keys, 0, sizeof(keys));

}

bool CInput::IsMouseButtonPressed(int iButton)
{
	return ((mouse_state.rgbButtons[iButton] & 0x80) != 0);
}