小弟新手 求助一贪吃蛇问题，蛇吃了豆子为什么没有变化，而且随机的豆子也未出现
yView class//
#include <stdio.h>
#include "stdafx.h"
#include "贪吃蛇.h"
#include "贪吃蛇Doc.h"
#include "贪吃蛇View.h"
#include "Ge.h"
#include "snake.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CMyView
IMPLEMENT_DYNCREATE(CMyView, CView)
BEGIN_MESSAGE_MAP(CMyView, CView)
//{{AFX_MSG_MAP(CMyView)
ON_COMMAND(IDM_START, OnStart)
ON_COMMAND(IDM_PAUSE, OnPause)
ON_WM_TIMER()
ON_WM_KEYDOWN()
//}}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()
/////////////////////////////////////////////////////////////////////////////
// CMyView construction/destruction
CMyView::CMyView()
{
// TODO: add construction code here
this->m_start=false;
this->m_pause=false;
//初始化蛇
snake.n=4,snake.direction=2;
snake.body[0].i=2,snake.body[0].j=5;
snake.body[1].i=2,snake.body[1].j=4;
snake.body[2].i=2,snake.body[2].j=3;
snake.body[3].i=2,snake.body[3].j=2;
//初始化豆子
unsigned int seed=time(NULL);
srand(seed);
do
{
bean.i=rand()%29;
bean.j=rand()%29;
}
while(CSnakesnake()==true);
}
CMyView::~CMyView()
{
}
BOOL CMyView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CMyView drawing
void CMyView::OnDraw(CDC* pDC)
{
CMyDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
//画背景
CClientDC dc(this);
CPen pen1;
CPen *oldPen;
pen1.CreatePen(PS_SOLID,2,RGB(192,192,192));
oldPen = dc.SelectObject(&pen1);
dc.MoveTo(0,290);
dc.LineTo(290,290);
dc.SelectObject(oldPen);
CDC dcmemory;
dcmemory.CreateCompatibleDC(pDC);
CBitmap bitmap;
bitmap.LoadBitmap(IDB_BITMAP1);
dcmemory.SelectObject(&bitmap);
int i,j;
for (i=0;i<=28;i++)
{
for (j=0;j<=28;j++)
{
pDC->StretchBlt(0+10*i,0+10*j,10,10,&dcmemory,0,0,48,48,SRCCOPY);
}
}
bitmap.Detach();
//画蛇头
bitmap.LoadBitmap(IDB_BITMAP2);
dcmemory.SelectObject(&bitmap);
pDC->StretchBlt(0+10*snake.body[0].j,0+10*snake.body[0].i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
bitmap.Detach();
//画蛇身
bitmap.LoadBitmap(IDB_BITMAP3);
dcmemory.SelectObject(&bitmap);
for (i=1;i<snake.n;i++)
{
pDC->StretchBlt(0+10*snake.body[i].j,0+10*snake.body[i].i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
}
bitmap.Detach();
//画豆子
bitmap.LoadBitmap(IDB_BITMAP4);
dcmemory.SelectObject(&bitmap);
pDC->StretchBlt(0+10*bean.i,0+10*bean.j,10,10,&dcmemory,0,0,48,48,SRCCOPY);
bitmap.Detach();
}
/////////////////////////////////////////////////////////////////////////////
// CMyView printing
BOOL CMyView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CMyView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CMyView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CMyView diagnostics
#ifdef _DEBUG
void CMyView::AssertValid() const
{
CView::AssertValid();
}
void CMyView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CMyDoc* CMyView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyDoc)));
return (CMyDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CMyView message handlers
void CMyView::OnStart()
{
// TODO: Add your command handler code here
this->m_start=true;
SetTimer(1,100,NULL);
}
void CMyView::OnPause()
{
// TODO: Add your command handler code here
static t=1;
if(t%2==1)
{
this->m_pause=true;
}
else
{
this->m_pause=false;
}
t++;
}
void CMyView::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
if(this->m_start==true && this->m_pause==false)
{
CGe tmp;
CClientDC dc(this);
CDC dcmemory;
dcmemory.CreateCompatibleDC(&dc);
CBitmap bitmap;
switch (snake.direction)
{
case 1 :
tmp=snake.forwardup();
break;
case 2:
tmp=snake.forwardright();
break;
case 3:
tmp=snake.forwarddown();
break;
case 4:
tmp=snake.forwardleft();
break;
}
if(Issnakeeat()==true)
{
//初始化豆子
unsigned int seed=time(NULL);
srand(seed);
do
{
bean.i=rand()%29;
bean.j=rand()%29;
}
while(CSnakesnake()==true);
bitmap.LoadBitmap(IDB_BITMAP4);
dcmemory.SelectObject(&bitmap);
dc.StretchBlt(0+10*bean.j,0+10*bean.i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
bitmap.Detach();
snake.n++;//蛇头增加
snake.body[snake.n-1].i=tmp.i;//蛇身不变
snake.body[snake.n-1].j=tmp.j;
}
bitmap.LoadBitmap(IDB_BITMAP1);
dcmemory.SelectObject(&bitmap);
dc.StretchBlt(0+10*tmp.j,0+10*tmp.i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
bitmap.Detach();
//画蛇头
bitmap.LoadBitmap(IDB_BITMAP2);
dcmemory.SelectObject(&bitmap);
dc.StretchBlt(0+10*snake.body[0].j,0+10*snake.body[0].i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
bitmap.Detach();
//画蛇身
bitmap.LoadBitmap(IDB_BITMAP3);
dcmemory.SelectObject(&bitmap);
for (int i=1;i<snake.n;i++)
{
dc.StretchBlt(0+10*snake.body[i].j,0+10*snake.body[i].i,10,10,&dcmemory,0,0,48,48,SRCCOPY);
}
bitmap.Detach();
}
CView::OnTimer(nIDEvent);
}
void CMyView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
if(nChar==VK_UP && snake.direction!=3)
{
snake.direction=1;
}
if(nChar==VK_RIGHT && snake.direction!=4)
{
snake.direction=2;
}
if(nChar==VK_DOWN && snake.direction!=1)
{
snake.direction=3;
}
if(nChar==VK_LEFT && snake.direction!=2)
{
snake.direction=4;
}
CView::OnKeyDown(nChar, nRepCnt, nFlags);
}
bool CMyView::CSnakesnake()
{
bool flag=false;
for(int i=0;i<snake.n;i++)
{
if(snake.body[i].i== bean.i&& bean.j==snake.body[i].j)
{
flag=true;
break;
}
}
return flag;
}
bool CMyView::Issnakeeat()
{
if(snake.body[snake.n].i==bean.i && snake.body[snake.n].j==bean.j)
{
return true;
}
else
{
return false;
}
}
