commands/snake/snake.cpp
author Tom Sutcliffe <thomas.sutcliffe@accenture.com>
Wed, 13 Oct 2010 12:41:05 +0100
changeset 66 2a78c4ff2eab
parent 0 7f656887cf89
child 78 b3ffff030d5c
permissions -rw-r--r--
Migrated ciftest and various fixes from FCL to MCL.
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// snake.cpp
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// 
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// Copyright (c) 2009 - 2010 Accenture. All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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// 
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// Initial Contributors:
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// Accenture - Initial contribution
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//
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#include <fshell/ioutils.h>
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#include <e32math.h>
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using namespace IoUtils;
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_LIT(KSnakeSeg, "*");
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_LIT(KUnicodeSnakeSeg, "\u2588"); // Full block
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_LIT(KBait, "$");
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_LIT(KUnicodeBait, "\u2665"); // heart
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class CKeyWatcher;
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class CCmdSnake : public CCommandBase
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	{
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public:
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	static CCommandBase* NewLC();
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	~CCmdSnake();
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	void Up();
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	void Down();
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	void Left();
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	void Right();
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	void Exit();
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	void OnTimer();
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private:
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	CCmdSnake();
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private: // From CCommandBase.
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	virtual const TDesC& Name() const;
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	virtual void DoRunL();
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	virtual void ArgumentsL(RCommandArgumentList& aArguments);
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	virtual void OptionsL(RCommandOptionList& aOptions);
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	void ConstructL();
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	void InitBoardL();
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	void SetBoard(TInt aX, TInt aY, TBool aSet);
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	TBool GetBoard(TInt aX, TInt aY);
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	void DrawBoardL();
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	TUint16 BoardCharacter(TInt aX, TInt aY);
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	void InitSnakeL(TInt aLen, TPoint aPos);
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	void DrawSnakeL();
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	void DrawScore();
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	void PlaceBait();
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	void Grow();
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	void Dead();
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private:
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	RIoConsoleWriteHandle iCons;
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	RIoConsoleReadHandle iConsIn;
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	TSize iBoardSize;
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	RArray<TPoint> iSnake;
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	TInt iSnakeHead;
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	RArray<TUint32> iBoard;
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	TInt iBoardWidthWords;
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	TPoint iDirection;
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	TPoint iBait;
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	TInt iScore;
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	TInt iSpeed;
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	TBool iUnicode;
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	CKeyWatcher* iKeys;
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	CPeriodic* iTimer;
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	TInt64 iRandomSeed;
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	TBool iInCollisionGracePeriod;
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	};
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class CKeyWatcher : public CActive
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	{
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public:
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	CKeyWatcher(CCmdSnake& aOwner, RIoConsoleReadHandle& aCons);
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	~CKeyWatcher();
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	void Request();
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private:
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	virtual void RunL();
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	virtual void DoCancel();
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private:
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	CCmdSnake& iOwner;
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	RIoConsoleReadHandle& iCons;
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	};
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CCommandBase* CCmdSnake::NewLC()
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	{
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	CCmdSnake* self = new(ELeave) CCmdSnake();
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	CleanupStack::PushL(self);
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	self->ConstructL();
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	return self;
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	}
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CCmdSnake::~CCmdSnake()
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	{
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	delete iKeys;
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	delete iTimer;
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	iSnake.Close();
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	iBoard.Close();
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	}
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CCmdSnake::CCmdSnake()
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	: CCommandBase(EManualComplete), iSpeed(50000)
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	{
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	}
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const TDesC& CCmdSnake::Name() const
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	{
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	_LIT(KName, "snake");	
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	return KName;
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	}
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TInt OnTimerS(TAny* aSnake)
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	{
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	((CCmdSnake*)aSnake)->OnTimer();
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	return KErrNone;
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	}
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void CCmdSnake::DoRunL()
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	{
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	if (!Stdout().AttachedToConsole())
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		{
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		LeaveIfErr(KErrNotSupported, _L("Stdout must be connected to a console"));
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		}
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	iCons = Stdout();
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	if (!Stdin().AttachedToConsole())
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		{
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		LeaveIfErr(KErrNotSupported, _L("Stdin must be connected to a console"));
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		}
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	iConsIn = Stdin();
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	iKeys = new(ELeave)CKeyWatcher(*this, iConsIn);
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	iCons.SetCursorHeight(0);
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	User::LeaveIfError(iCons.GetScreenSize(iBoardSize));
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	iBoardSize.iHeight--; // space for status bar, plus to ensure that the console doesn't scroll when we draw the bottom line
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	iBoardWidthWords = iBoardSize.iWidth / 32;
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	if (iBoardSize.iWidth % 32) ++iBoardWidthWords;
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	InitBoardL();
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	DrawBoardL();
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	TPoint centre;
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	centre.iX = iBoardSize.iWidth / 2;
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	centre.iY = iBoardSize.iHeight / 2;
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	InitSnakeL(10, centre);	
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	DrawSnakeL();
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	PlaceBait();
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	DrawScore();
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	iTimer = CPeriodic::NewL(CActive::EPriorityStandard);
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	iTimer->Start(iSpeed, iSpeed, TCallBack(OnTimerS, this));
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	}
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void CCmdSnake::ArgumentsL(RCommandArgumentList& /*aArguments*/)
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	{
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	}
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void CCmdSnake::OptionsL(RCommandOptionList& aOptions)
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	{
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	_LIT(KOptSpeed, "speed");
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	aOptions.AppendIntL(iSpeed, KOptSpeed);
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	_LIT(KOptUnicode, "unicode");
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	aOptions.AppendBoolL(iUnicode, KOptUnicode);
0
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	}
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void CCmdSnake::ConstructL()
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	{
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	BaseConstructL();
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	TTime now;
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	now.HomeTime();
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	iRandomSeed = now.Int64();
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	}
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void CCmdSnake::InitBoardL()
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	{
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	// first, zero the whole board
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	iBoard.Reset();
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	for (TInt y=0; y<iBoardSize.iHeight; ++y)
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		{
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		for (TInt x=0; x<iBoardWidthWords; ++x)
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			{
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			iBoard.AppendL(0);
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			}
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		}
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	// draw a box around the edge
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	for (TInt i=0; i<iBoardSize.iWidth; ++i)
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		{
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		SetBoard(i, 0, ETrue);
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		SetBoard(i, iBoardSize.iHeight-1, ETrue);
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		}
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	for (TInt i=0; i<iBoardSize.iHeight; ++i)
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		{
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		SetBoard(0, i, ETrue);
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		SetBoard(iBoardSize.iWidth-1, i, ETrue);
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		}
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	}
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void CCmdSnake::SetBoard(TInt aX, TInt aY, TBool aSet)
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	{
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	TInt word = (aY * iBoardWidthWords) + (aX / 32);
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	TInt bit = 1 << (aX % 32);
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	if (aSet)
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		{
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		iBoard[word] |= bit;
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		}
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	else
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		{
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		iBoard[word] &= (~bit);
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		}
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	}
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TBool CCmdSnake::GetBoard(TInt aX, TInt aY)
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	{
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	TInt word = (aY * iBoardWidthWords) + (aX / 32);
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	TInt bit = 1 << (aX % 32);
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	return iBoard[word] & bit;
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	}
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void CCmdSnake::DrawBoardL()
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	{
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	User::LeaveIfError(iCons.ClearScreen());
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	RBuf line;
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	line.CreateMaxL(iBoardSize.iWidth);
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	CleanupClosePushL(line);
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	for (TInt y=0; y<iBoardSize.iHeight; ++y)
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		{
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		for (TInt x=0; x<iBoardSize.iWidth; ++x)
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			{
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			//line[x] = GetBoard(x,y) ? '#' : ' ';
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			line[x] = BoardCharacter(x, y);
0
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			}
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		User::LeaveIfError(iCons.SetCursorPosAbs(TPoint(0, y)));
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		User::LeaveIfError(iCons.Write(line));
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		}
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	CleanupStack::PopAndDestroy();
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	}
66
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TUint16 CCmdSnake::BoardCharacter(TInt aX, TInt aY)
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	{
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	if (!GetBoard(aX, aY))
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		{
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		return ' ';
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		}
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	else if (!iUnicode)
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		{
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		return '#';
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		}
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	else
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		{
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		// TODO this is too simplistic for anything other than the basic board
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		if (aX == 0)
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			{
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   265
			if (aY == 0)
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   266
				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   267
				return 0x2554; // TL
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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diff changeset
   268
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   269
			else if (aY == iBoardSize.iHeight - 1)
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   271
				return 0x255A; // BL
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   272
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   273
			else
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   274
				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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				return 0x2551;
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   276
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   277
			}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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		else if (aX == iBoardSize.iWidth - 1)
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   279
			{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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			if (aY == 0)
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   281
				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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				return 0x2557; // TR
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   283
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   284
			else if (aY == iBoardSize.iHeight - 1)
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
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   285
				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   286
				return 0x255D; // BR;
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   287
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
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   288
			else
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
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   289
				{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   290
				return 0x2551;
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   291
				}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
diff changeset
   292
			}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
diff changeset
   293
		else
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
diff changeset
   294
			{
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   295
			return 0x2550;
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   296
			}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   297
		}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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parents: 0
diff changeset
   298
	}
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
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   299
0
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   300
void CCmdSnake::InitSnakeL(TInt aLen, TPoint aPos)
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   301
	{
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	iSnake.Reset();
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   303
	for (TInt i=0; i<aLen; ++i)
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		{
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   305
		iSnake.AppendL(aPos);
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   306
		}
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   307
	iSnakeHead = 0;
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   308
	}
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   309
	
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void CCmdSnake::DrawSnakeL()
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parents:
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   311
	{
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   312
	for (TInt i=0; i<iSnake.Count(); ++i)
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parents:
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   313
		{
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   314
		User::LeaveIfError(iCons.SetCursorPosAbs(iSnake[i]));
66
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   315
		User::LeaveIfError(iCons.Write(iUnicode ? KUnicodeSnakeSeg : KSnakeSeg));
0
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parents:
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   316
		}
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parents:
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   317
	}
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   318
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   319
void CCmdSnake::Up()
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   320
	{
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parents:
diff changeset
   321
	if (iDirection.iY != 1)
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   322
		{
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   323
		iDirection.SetXY(0, -1);
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parents:
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   324
		}
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parents:
diff changeset
   325
	}
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parents:
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   326
	
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parents:
diff changeset
   327
void CCmdSnake::Down()
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parents:
diff changeset
   328
	{
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parents:
diff changeset
   329
	if (iDirection.iY != -1)
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parents:
diff changeset
   330
		{
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parents:
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   331
		iDirection.SetXY(0, 1);
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parents:
diff changeset
   332
		}
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parents:
diff changeset
   333
	}
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parents:
diff changeset
   334
	
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parents:
diff changeset
   335
void CCmdSnake::Left()
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parents:
diff changeset
   336
	{
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parents:
diff changeset
   337
	if (iDirection.iX != 1)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   338
		{
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parents:
diff changeset
   339
		iDirection.SetXY(-1, 0);
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parents:
diff changeset
   340
		}
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parents:
diff changeset
   341
	}
7f656887cf89 First submission to Symbian Foundation staging server.
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parents:
diff changeset
   342
	
7f656887cf89 First submission to Symbian Foundation staging server.
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parents:
diff changeset
   343
void CCmdSnake::Right()
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parents:
diff changeset
   344
	{
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Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   345
	if (iDirection.iX != -1)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   346
		{
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parents:
diff changeset
   347
		iDirection.SetXY(1, 0);
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parents:
diff changeset
   348
		}
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parents:
diff changeset
   349
	}
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parents:
diff changeset
   350
	
7f656887cf89 First submission to Symbian Foundation staging server.
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parents:
diff changeset
   351
_LIT(KQuitFmt, "Quit; score: %d\n");
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parents:
diff changeset
   352
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Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   353
void CCmdSnake::Exit()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   354
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   355
	iCons.SetCursorPosAbs(TPoint(0, iBoardSize.iHeight));
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   356
	iCons.SetCursorHeight(20);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   357
	TBuf<0x20> buf;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   358
	buf.AppendFormat(KQuitFmt, iScore);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   359
	iCons.Write(buf);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   360
	Complete(iScore);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   361
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   362
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   363
_LIT(KDeadFmt, "Game over; score: %d\n");
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   364
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   365
void CCmdSnake::Dead()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   366
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   367
	iKeys->Cancel();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   368
	iCons.SetCursorPosAbs(TPoint(0, iBoardSize.iHeight));
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   369
	iCons.SetCursorHeight(20);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   370
	TBuf<0x20> buf;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   371
	buf.AppendFormat(KDeadFmt, iScore);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   372
	iCons.Write(buf);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   373
	Complete(iScore);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   374
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   375
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   376
void CCmdSnake::OnTimer()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   377
	{
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Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   378
	iKeys->Request();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   379
	if (!(iDirection.iX || iDirection.iY)) return;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   380
	TPoint newHead = iSnake[iSnakeHead] + iDirection + iBoardSize;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   381
	newHead.iX %= iBoardSize.iWidth;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   382
	newHead.iY %= iBoardSize.iHeight;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   383
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   384
	// check for obstacles
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   385
	if (GetBoard(newHead.iX, newHead.iY))
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   386
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   387
		if (iInCollisionGracePeriod)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   388
			{
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Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   389
			Dead();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   390
			}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   391
		else
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   392
			{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   393
			iInCollisionGracePeriod = ETrue;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   394
			}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   395
		return;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   396
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   397
	iInCollisionGracePeriod = EFalse;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   398
	for (TInt i=0; i<iSnake.Count(); ++i)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   399
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   400
		if (newHead == iSnake[i])
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   401
			{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   402
			Dead();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   403
			return;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   404
			}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   405
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   406
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   407
	TInt tail = (iSnakeHead+1) % iSnake.Count();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   408
	// overwrite the tail if it's not in the same position as the segment before it
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   409
	if (iSnake[tail] != iSnake[(tail+1)%iSnake.Count()])
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   410
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   411
		iCons.SetCursorPosAbs(iSnake[tail]);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   412
		iCons.Write(_L(" "));
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   413
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   414
	iCons.SetCursorPosAbs(newHead);
66
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   415
	iCons.Write(iUnicode ? KUnicodeSnakeSeg : KSnakeSeg);
0
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   416
	iSnakeHead = (iSnakeHead+1) % iSnake.Count();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   417
	iSnake[iSnakeHead] = newHead;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   418
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   419
	if (iSnake[iSnakeHead] == iBait)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   420
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   421
		// Yummy!
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   422
		iScore++;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   423
		DrawScore();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   424
		PlaceBait();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   425
		Grow();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   426
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   427
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   428
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   429
_LIT(KScoreFormat, "Score: %d");
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   430
	
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   431
void CCmdSnake::DrawScore()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   432
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   433
	iCons.SetCursorPosAbs(TPoint(0, iBoardSize.iHeight));
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   434
	TBuf<0x20> score;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   435
	score.AppendFormat(KScoreFormat, iScore);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   436
	iCons.Write(score);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   437
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   438
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   439
void CCmdSnake::PlaceBait()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   440
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   441
	TBool ok;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   442
	do
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   443
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   444
		ok = ETrue;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   445
		iBait.iX = Math::Rand(iRandomSeed) % iBoardSize.iWidth;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   446
		iBait.iY = Math::Rand(iRandomSeed) % iBoardSize.iHeight;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   447
		
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   448
		if (GetBoard(iBait.iX, iBait.iY)) ok = EFalse;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   449
		if (ok)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   450
			{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   451
			for (TInt i=0; i<iSnake.Count(); ++i)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   452
				{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   453
				if (iSnake[i] == iBait) ok = EFalse;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   454
				}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   455
			}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   456
		} while (!ok);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   457
	iCons.SetCursorPosAbs(iBait);
66
2a78c4ff2eab Migrated ciftest and various fixes from FCL to MCL.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents: 0
diff changeset
   458
	iCons.Write(iUnicode ? KUnicodeBait : KBait);
0
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   459
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   460
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   461
void CCmdSnake::Grow()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   462
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   463
	TInt tail = (iSnakeHead+1)% iSnake.Count();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   464
	iSnake.Insert(iSnake[tail], tail);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   465
	if (tail < iSnakeHead) iSnakeHead++;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   466
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   467
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   468
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   469
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   470
EXE_BOILER_PLATE(CCmdSnake)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   471
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   472
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   473
//______________________________________________________________________________
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   474
//						CKeyWatcher
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   475
CKeyWatcher::CKeyWatcher(CCmdSnake& aOwner, RIoConsoleReadHandle& aCons)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   476
	: CActive(EPriorityHigh), iOwner(aOwner), iCons(aCons)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   477
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   478
	CActiveScheduler::Add(this);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   479
	Request();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   480
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   481
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   482
CKeyWatcher::~CKeyWatcher()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   483
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   484
	Cancel();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   485
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   486
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   487
void CKeyWatcher::RunL()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   488
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   489
	User::LeaveIfError(iStatus.Int());
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   490
	TKeyCode key = (TKeyCode)iCons.KeyCode();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   491
	switch (key)
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   492
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   493
	case EKeyUpArrow:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   494
	case '2':
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   495
		iOwner.Up();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   496
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   497
	case EKeyDownArrow:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   498
	case '8':
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   499
		iOwner.Down();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   500
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   501
	case EKeyLeftArrow:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   502
	case '4':
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   503
		iOwner.Left();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   504
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   505
	case EKeyRightArrow:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   506
	case '6':
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   507
		iOwner.Right();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   508
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   509
	case EKeyEscape:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   510
	case EKeyBackspace:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   511
		iOwner.Exit();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   512
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   513
	default:
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   514
		break;
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   515
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   516
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   517
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   518
void CKeyWatcher::DoCancel()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   519
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   520
	iCons.WaitForKeyCancel();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   521
	}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   522
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   523
void CKeyWatcher::Request()
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   524
	{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   525
	if (!IsActive())
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   526
		{
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   527
		iCons.WaitForKey(iStatus);
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   528
		SetActive();
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   529
		}
7f656887cf89 First submission to Symbian Foundation staging server.
Tom Sutcliffe <thomas.sutcliffe@accenture.com>
parents:
diff changeset
   530
	}