canvasframe.cpp

《Visual C++游戏设计入门》配套代码

// canvasFrame.cpp : implementation file
//

#include "stdafx.h"
#include "canvasr.h"
#include "canvasFrame.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// canvasFrame

IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd)
int xnow,ynow,xlast,ylast,i,c,xp;
canvasFrame::canvasFrame()
{
	Create(NULL,"绘图窗口");
	CClientDC dc(this);
	int width = dc.GetDeviceCaps(HORZRES);
	int height = dc.GetDeviceCaps(VERTRES);
	GetWindowRect( &rect );
	width = ( width - ( rect.right - rect.left ))/2 ;
	height = (height - (rect.bottom - rect.top ))/2 ;
	MoveWindow( width , height , (rect.right - rect.left ) , (rect.bottom - rect.top ) ,true);
	mdc = new CDC;
	mdc1 = new CDC;
	mdc2 = new CDC;
	mdc->CreateCompatibleDC(&dc);
	mdc1->CreateCompatibleDC(&dc);
	mdc2->CreateCompatibleDC(&dc);
	tempbmp = new CBitmap;
	bgbmp = new CBitmap;
	tempbmp->CreateCompatibleBitmap(&dc,rect.right,rect.bottom);
	char str[7];
	for(i=0;i<4;i++)              
	{
		sprintf(str,"m%d.bmp",i);
		m[i] = new CBitmap;
		m[i]->m_hObject = (HBITMAP)::LoadImage(NULL,str,IMAGE_BITMAP,440,74,LR_LOADFROMFILE);
		sprintf(str,"p%d.bmp",i);
		p[i] = new CBitmap;
		p[i]->m_hObject = (HBITMAP)::LoadImage(NULL,str,IMAGE_BITMAP,440,74,LR_LOADFROMFILE);
	}
	for(i=0;i<4;i++)
	{
		sprintf(str,"d%d.bmp",i);
		d[i] = new CBitmap;
		d[i]->m_hObject = (HBITMAP)::LoadImage(NULL,str,IMAGE_BITMAP,100,99,LR_LOADFROMFILE);
		sprintf(str,"md%d.bmp",i);
		md[i] = new CBitmap;
		md[i]->m_hObject = (HBITMAP)::LoadImage(NULL,str,IMAGE_BITMAP,100,99,LR_LOADFROMFILE);
	}
	bgbmp->m_hObject = (HBITMAP)::LoadImage(NULL,"bground.bmp",IMAGE_BITMAP,rect.right,rect.bottom,LR_LOADFROMFILE);
	mdc->SelectObject(tempbmp);
	CPoint *p = new CPoint(60,0); //设定起始坐标
	ClientToScreen(p);             //转换坐标
	::SetCursorPos(p->x,p->y);     //设定鼠标所在位置
	ShowCursor(false);
	delete p;
}

canvasFrame::~canvasFrame()
{
	delete mdc;                 //释放资源
	delete mdc1;
	delete mdc2;
	for(i=0;i<=3;i++)
	{
		delete p[i]; //释放资源
		delete m[i]; //释放资源
		delete d[i];
		delete md[i];
	}
	delete tempbmp;
	delete bgbmp;
}


BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd)
	//{{AFX_MSG_MAP(canvasFrame)
	ON_WM_MOUSEMOVE()
	ON_WM_CHAR()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// canvasFrame message handlers


void canvasFrame::OnMouseMove(UINT nFlags, CPoint point) 
{
	CClientDC dc(this);
	SetCapture();
	xlast = xnow;      //上一次的 X 坐标
	ylast = ynow;      //上一次的 Y 坐标
	xnow = point.x;    //此次的 X 坐标
	ynow = point.y;    //此次的 Y 坐标
	c++;
		if(c==8)
			c=0;
	xp=55*c;
	mdc1->SelectObject(bgbmp);
	mdc->BitBlt(0,0,rect.right,rect.bottom,mdc1,0,0,SRCCOPY);
	if(fabs(xnow-xlast) >= fabs(ynow-ylast))
	{
		if(xnow >= xlast)              //往右
		{
			mdc2->SelectObject(md[1]); //贴上箭头
			mdc->BitBlt(point.x+35,point.y-15,100,99,mdc2,0,0,SRCAND);
			mdc2->SelectObject(d[1]);
			mdc->BitBlt(point.x+35,point.y-15,100,99,mdc2,0,0,SRCPAINT);
  			mdc1->SelectObject(m[1]);  //贴上人物
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCAND);
			mdc1->SelectObject(p[1]);
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCPAINT);
		}
		else                           //往左
		{
			mdc2->SelectObject(md[2]);
			mdc->BitBlt(point.x-80,point.y-15,100,99,mdc2,0,0,SRCAND);
			mdc2->SelectObject(d[2]);
			mdc->BitBlt(point.x-80,point.y-15,100,99,mdc2,0,0,SRCPAINT);
			mdc1->SelectObject(m[2]);
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCAND);
			mdc1->SelectObject(p[2]);
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCPAINT);
		}
	}
	else
	{
		if(ynow >= ylast)            //往下
		{
			mdc2->SelectObject(md[3]);
			mdc->BitBlt(point.x-25,point.y+65,100,99,mdc2,0,0,SRCAND);
			mdc2->SelectObject(d[3]);
			mdc->BitBlt(point.x-25,point.y+65,100,99,mdc2,0,0,SRCPAINT);
            mdc1->SelectObject(m[3]);
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCAND);
			mdc1->SelectObject(p[3]);
			mdc->BitBlt(point.x,point.y,55,74,mdc1,xp,0,SRCPAINT);
		}
		else                          //往上
		{
			mdc2->SelectObject(md[0]);
			mdc->BitBlt(point.x-25,point.y-75,100,99,mdc2,0,0,SRCAND);
			mdc2->SelectObject(d[0]);
			mdc->BitBlt(point.x-25,point.y-75,100,99,mdc2,0,0,SRCPAINT);
			mdc1->SelectObject(m[0]);			
			mdc->BitBlt(point.x,point.y+10,55,74,mdc1,xp,0,SRCAND);
			mdc1->SelectObject(p[0]);
			mdc->BitBlt(point.x,point.y+10,55,74,mdc1,xp,0,SRCPAINT);
		}
	}
	dc.BitBlt(0,0,rect.right,rect.bottom,mdc,0,0,SRCCOPY);
	CFrameWnd::OnMouseMove(nFlags, point);
}

void canvasFrame::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	if( nChar== VK_ESCAPE)     
		PostMessage(WM_CLOSE );  //传送WM_CLOSE信息
	CFrameWnd::OnChar(nChar, nRepCnt, nFlags);
}