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Visual C++

jds_snakeView.cpp：源码内容
							// jds_snakeView.cpp : implementation of the CJds_snakeView class
//
#include "stdafx.h"
#include "jds_snake.h"
#include "jds_snakeDoc.h"
#include "jds_snakeView.h"
#include "MainFrm.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView
IMPLEMENT_DYNCREATE(CJds_snakeView, CView)
BEGIN_MESSAGE_MAP(CJds_snakeView, CView)
	//{{AFX_MSG_MAP(CJds_snakeView)
	ON_WM_TIMER()
	ON_WM_CREATE()
	ON_WM_KEYDOWN()
	ON_COMMAND(ID_DIFFICULTY_EASY, OnDifficultyEasy)
	ON_COMMAND(ID_DIFFICULTY_HARD, OnDifficultyHard)
	ON_COMMAND(ID_DIFFICULTY_NORMAL, OnDifficultyNormal)
	ON_COMMAND(ID_DIFFICULTY_VERYHARD, OnDifficultyVeryhard)
	ON_COMMAND(ID_BUTTON_START, OnButtonStart)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView construction/destruction
CJds_snakeView::CJds_snakeView()
{
	// TODO: add construction code here
	start=0;
	difficulty=10;
	count=4;
	
}
CJds_snakeView::~CJds_snakeView()
{
}
BOOL CJds_snakeView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView drawing
void CJds_snakeView::OnDraw(CDC* pDC)
{
	CJds_snakeDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView printing
BOOL CJds_snakeView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}
void CJds_snakeView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}
void CJds_snakeView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView diagnostics
#ifdef _DEBUG
void CJds_snakeView::AssertValid() const
{
	CView::AssertValid();
}
void CJds_snakeView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}
CJds_snakeDoc* CJds_snakeView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CJds_snakeDoc)));
	return (CJds_snakeDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CJds_snakeView message handlers
void CJds_snakeView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	KillTimer(1);	
	CString str_count;
	str_count.Format("分数：%d",count-4);
	aliveordie();	//生死判官
	CDC* pDC=GetDC();
	CDC MemDC;
	CBitmap MemBitmap;
	MemDC.CreateCompatibleDC(NULL); 
	MemBitmap.CreateCompatibleBitmap(pDC,1000,1000); 
	CBitmap *pOldBit=MemDC.SelectObject(&MemBitmap); 
	MemDC.FillSolidRect(0,0,1000,1000,RGB(255,255,255)); 
	
	MemDC.TextOut(500,200,str_count);
	MemDC.Rectangle(CRect(10,10,440,440));
	MemDC.Rectangle(CRect(20,20,430,430));
	if (start==1)
	{
		b.x=a[0].x;
		b.y=a[0].y;
		if (aspect==0)
		{
			a[0].x=a[0].x+10;	
		} else if (aspect==1)
		{
			a[0].y=a[0].y+10;
		}else if (aspect==2)
		{
			a[0].x=a[0].x-10;
		}else if (aspect==3)
		{
			a[0].y=a[0].y-10;	
		}
		for (int i=1;i<count-1;i++)
		{
			a[count-i].x=a[count-i-1].x;
			a[count-i].y=a[count-i-1].y;
		}
		a[1].x=b.x;
		a[1].y=b.y;
		CBrush head(RGB(255,0,0));
		MemDC.SelectObject(head);
		rct=new CRect(a[0].x,a[0].y,a[0].x+10,a[0].y+10);	
		MemDC.Rectangle(rct);
		for(i=1;i<count;i++)
		{
			CBrush body(RGB(255,255,0));
			MemDC.SelectObject(body);
			rct=new CRect(a[i].x,a[i].y,a[i].x+10,a[i].y+10);	
			MemDC.Rectangle(rct);
			MemDC.SelectStockObject(BLACK_BRUSH);
		}
		if (a[0].x==xx && a[0].y==yy)
		{
			can_new=1;
			count++;
			a[count-1].x=a[count-2].x;
			a[count-1].y=a[count-2].y;
			//		MessageBox("eat");
		}
		if (can_new==1)
		{
			int px=int(random(2,42));
			int py=int(random(2,42));
			xx=px*10;
			yy=px*10;	
			for (int i=0;i<count;i++)
			{
				while (xx==a[i].x && yy==a[i].y)
				{
					int px=int(random(2,42));
					int py=int(random(2,42));
					xx=px*10;
					yy=px*10;
				}
			}
			can_new=0;
		}
	CBrush foot(RGB(0,255,0));
	MemDC.SelectObject(foot);
	MemDC.Rectangle(xx,yy,xx+10,yy+10);
	MemDC.SelectStockObject(BLACK_BRUSH);
	}
	pDC->BitBlt(0,0,1000,1000,&MemDC,0,0,SRCCOPY); 
	MemBitmap.DeleteObject(); 
	MemDC.DeleteDC(); 
	OnDraw(pDC);
	int m_timer=SetTimer(1,difficulty*30,NULL);
	CView::OnTimer(nIDEvent);
}
int CJds_snakeView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	/*
	CString str;
	str.Format("%d",difficulty);
	MessageBox(str);
	*/
	SetTimer(1,10,NULL);
	srand(unsigned(time(0)));
	return 0;
}
void CJds_snakeView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	last_aspect=aspect;
	if (nChar==37 && last_aspect!=0)
	{
		aspect=2;
	}else if (nChar==38 && last_aspect!=1)
	{
		aspect=3;
	}else if (nChar==39 && last_aspect!=2)
	{
		aspect=0;
	}else if (nChar==40 && last_aspect!=3)
	{
		aspect=1;
	}
	CView::OnKeyDown(nChar, nRepCnt, nFlags);
}
double CJds_snakeView::random(double start, double end)
{
	return start+(end-start)*rand()/(RAND_MAX + 1.0);
}
void CJds_snakeView::aliveordie()
{
	for (int i=1;i<count;i++)
	{
		if (a[0].x==a[i].x && a[0].y==a[i].y)
		{
			start=0;
		}
		else if (a[0].x<20 || a[0].x>420 ||a[0].y<20 ||a[0].y>420)
		{
			start=0;
		}
	}
	
}
void CJds_snakeView::Init()
{
	aspect=0;
	last_aspect=0;
	count=4;
	can_new=1;
	a[0].x=90;
	a[0].y=80;
	a[1].x=80;
	a[1].y=80;
	a[2].x=70;
	a[2].y=80;
	a[3].x=60;
	a[3].y=80;
}
void CJds_snakeView::OnDifficultyEasy() 
{
	// TODO: Add your command handler code here
	difficulty=10;
	CString str;
	str.Format("%d",difficulty);
//	MessageBox(str);
}
void CJds_snakeView::OnDifficultyHard() 
{
	// TODO: Add your command handler code here
	difficulty=3;
}
void CJds_snakeView::OnDifficultyNormal() 
{
	// TODO: Add your command handler code here
	difficulty=6;
	CString str;
	str.Format("%d",difficulty);
//	MessageBox(str);
}
void CJds_snakeView::OnDifficultyVeryhard() 
{
	// TODO: Add your command handler code here
	difficulty=2;
	CString str;
	str.Format("%d",difficulty);
//	MessageBox(str);
}
void CJds_snakeView::OnButtonStart() 
{
	// TODO: Add your command handler code here
	start=1;
	Init();
}

						