www.pudn.com > 2DGameAnimS60C_v1_0.zip > ShipAnim.cpp

//////////////////////////////////////////////////////////////////////// 
// 
// ShipAnim.cpp 
// 
// Copyright (c) 2003 Nokia Mobile Phones Ltd.  All rights reserved. 
// 
//////////////////////////////////////////////////////////////////////// 
 
#include  
#include "RenderableFactory.h" 
#include "BitmapAnimFrame.h" 
#include "ShipAnim.h" 
 
//////////////////////////////////////////////////////////////////////// 
//////////////////////////////////////////////////////////////////////// 
 
CShipAnim::CShipAnim() : 
CBaseAnim(TSize(32,32)) 
	{ 
	} 
 
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CShipAnim* CShipAnim::NewL(CFbsBitmap& aSourceImage) 
	{ 
	CShipAnim* self = new(ELeave) CShipAnim(); 
	CleanupStack::PushL(self); 
	self->ConstructL(aSourceImage); 
	CleanupStack::Pop(); 
	return self; 
	} 
 
//////////////////////////////////////////////////////////////////////// 
 
CShipAnim::~CShipAnim() 
	{ 
	} 
 
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void CShipAnim::ConstructL(CFbsBitmap& aSourceImage) 
    { 
	AllocRenderablesL(64); 
 
	// Create image, device and context (only needed briefly): 
	CFbsBitmap* image = new (ELeave) CFbsBitmap(); 
	CleanupStack::PushL(image); 
	User::LeaveIfError( image->Create(iSize, EColor4K ) ); 
	CFbsBitmapDevice* device = CFbsBitmapDevice::NewL(image); 
	CleanupStack::PushL(device); 
	CFbsBitGc* gc; 
	User::LeaveIfError(device->CreateContext(gc)); 
	gc->SetBrushColor(TRgb(0,0,0)); 
 
	// Create ship frames: 
	TInt frame; 
	for (frame = 0 ; frame <= 32 ; frame++) 
	{ 
		gc->Clear(); 
		BuildFrame(aSourceImage,frame,gc); 
		AddRenderable(CBitmapAnimFrame::NewL(*image)); 
	} 
	for (; frame < 64 ; frame++) 
	{ 
		gc->Clear(); 
		BuildFlippedFrame(aSourceImage,64 - frame,*image); 
		AddRenderable(CBitmapAnimFrame::NewL(*image)); 
	} 
 
	// Destroy context, device and image; 
	delete gc; 
	CleanupStack::PopAndDestroy(2); 
	} 
 
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void CShipAnim::BuildFrame(CFbsBitmap& aSourceImage,TInt frame_no,CFbsBitGc* aGc) 
{ 
	// Convert frame to x-coord: 
	TInt frame_x = frame_no << 5; 
 
	aGc->BitBlt(TPoint(0,0),&aSourceImage,TRect(TPoint(frame_x,0),TSize(32,32))); 
} 
 
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void CShipAnim::BuildFlippedFrame(CFbsBitmap& aSourceImage,TInt frame_no,CFbsBitmap& aDestImage) 
{ 
	// Convert frame to x-coord: 
	TInt frame_x = frame_no << 5; 
 
	// Now use TBitmapUtils to flip source image 
	// about the line x = y: 
	TBitmapUtil srcUtil(&aSourceImage); 
	TBitmapUtil destUtil(&aDestImage); 
 
	srcUtil.Begin(TPoint(frame_x,0)); 
	destUtil.Begin(TPoint(0,0),srcUtil); 
 
	for (TInt y = 0 ; y < 32 ; y++) 
	{ 
		srcUtil.SetPos(TPoint(frame_x,y)); 
		destUtil.SetPos(TPoint(y,0)); 
 
		for (TInt x = 0 ; x < 32 ; x++) 
		{ 
			destUtil.SetPixel(srcUtil); 
			srcUtil.IncXPos(); 
			destUtil.IncYPos(); 
		} 
	} 
 
	srcUtil.End(); 
	destUtil.End(); 
} 
 
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