Windows API贪吃蛇游戏

  1 // wanwan.cpp : 定义应用程序的入口点。
  2 //
  3 
  4 
  5 #include <windows.h>
  6 
  7 #include<time.h>
  8 #define LEFT VK_LEFT
  9 #define RIGHT VK_RIGHT
 10 #define DOWN VK_DOWN
 11 #define UP VK_UP
 12 
 13 
 14 
 15 LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
 16 
 17 /*  Make the class name into a global variable  */
 18  TCHAR szClassName[ ] = TEXT("WindowsApp");
 19 
 20 int WINAPI WinMain (HINSTANCE hThisInstance,
 21                     HINSTANCE hPrevInstance,
 22                     LPSTR lpszArgument,
 23                     int nFunsterStil)
 24 
 25 {
 26     HWND hwnd;              
 27     MSG messages;         
 28     WNDCLASSEX wincl;       
 29  
 30     wincl.hInstance = hThisInstance;
 31     wincl.lpszClassName = szClassName;
 32     wincl.lpfnWndProc = WindowProcedure;      
 33     wincl.style = CS_GLOBALCLASS;              
 34     wincl.cbSize = sizeof (WNDCLASSEX);
 35 
 36    
 37     wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
 38     wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
 39     wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
 40     wincl.lpszMenuName = NULL;                 /* No menu */
 41     wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
 42     wincl.cbWndExtra = 0;                      /* structure or the window instance */
 43     /* Use Windows‘s default color as the background of the window */
 44     wincl.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
 45 
 46     /* Register the window class, and if it fails quit the program */
 47     if (!RegisterClassEx (&wincl))
 48         return 0;
 49 
 50     /* The class is registered, let‘s create the program*/
 51     hwnd = CreateWindowEx (
 52            WS_EX_TOOLWINDOW,                   /* Extended possibilites for variation */
 53            szClassName,         /* Classname */
 54            TEXT("SNAKE"),       /* Title Text */
 55            WS_SYSMENU, /* default window */
 56            CW_USEDEFAULT,       /* Windows decides the position */
 57            CW_USEDEFAULT,       /* where the window ends up on the screen */
 58            540,                 /* The programs width */
 59            380,                 /* and height in pixels */
 60            HWND_DESKTOP,        /* The window is a child-window to desktop */
 61            NULL,                /* No menu */
 62            hThisInstance,       /* Program Instance handler */
 63            NULL                 /* No Window Creation data */
 64            );
 65 
 66     /* Make the window visible on the screen */
 67     ShowWindow (hwnd, nFunsterStil);
 68 
 69     /* Run the message loop. It will run until GetMessage() returns 0 */
 70     while (GetMessage (&messages, NULL, 0, 0))
 71     {
 72         /* Translate virtual-key messages into character messages */
 73         TranslateMessage(&messages);
 74         /* Send message to WindowProcedure */
 75         DispatchMessage(&messages);
 76     }
 77 
 78     /* The program return-value is 0 - The value that PostQuitMessage() gave */
 79     return messages.wParam;
 80 }
 81 typedef struct snake
 82 {
 83         POINT node[1000];
 84         int num;
 85         int direct;
 86         int life;
 87 }snk;
 88 
 89 snk a={{{80,60},{60,60}},2,RIGHT,1};
 90 
 91 void rect(HDC hdc,POINT p,int a)
 92 {
 93      Ellipse(hdc,p.x,p.y,p.x+a,p.y+a);//？？？为什么设为零不行
 94 }
 95 
 96 
 97 // 用来判断边界！！
 98 int ismax(POINT a,POINT b,POINT c,int l)
 99 {
100    if((a.x<b.x)||(a.x>c.x)||(a.y>c.y)||(a.y<b.y))
101    return 1;
102    else return 0;
103 }
104 
105 
106 /*  This function is called by the Windows function DispatchMessage()  */
107 
108 
109 LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
110 {
111     HDC hdc;
112     PAINTSTRUCT ps;
113     static HPEN hpen=CreatePen(PS_SOLID,4,RGB(200,0,10)),hpen1=CreatePen(PS_SOLID,4,RGB(0,200,0)),hpen2=CreatePen(PS_SOLID,4,RGB(0,200,200));
114     static HPEN hpenw=CreatePen(PS_SOLID,4,RGB(255,255,255));
115     static int x=0,y=0,score=0,rank=1;
116     static POINT bound1={0,20},bound2;
117     static POINT food={200,200};
118     TCHAR sco[50];
119     static int intv=200;//代表200毫秒
120     static POINT era;
121 
122     int i;
123     srand(time(NULL));
124     switch (message)                  /* handle the messages */
125     {
126         case WM_CREATE:
127              SetTimer(hwnd,1,intv,NULL);
128              break;
129         case WM_DESTROY:
130            
131             KillTimer(hwnd,1);
132             PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
133             break;
134         case WM_SIZE:
135              bound2.x=LOWORD(lParam);
136              bound2.y=HIWORD(lParam);
137              x=bound2.x/2;y=bound2.y/2;
138              break;
139         case WM_TIMER:
140             era=a.node[a.num-1];
141             for(i=a.num-1;i>=1;i--)
142                         a.node[i]=a.node[i-1];
143             switch(a.direct)
144                   {
145                         case UP:
146                             a.node[0].y-=20;break;
147                         case DOWN:
148                             a.node[0].y+=20;break;
149                         case LEFT:
150                             a.node[0].x-=20;break;
151                         case RIGHT:
152                             a.node[0].x+=20;break;
153                    }
154 
155           InvalidateRect(hwnd,NULL,FALSE);
156             break;
157 
158              
159         
160         case WM_PAINT:
161               if(a.node[0].x==food.x&&a.node[0].y==food.y)
162                   {
163                         
164                         a.num++;
165                         a.node[a.num-1]=a.node[a.num-2];
166                         //防止食物产生在蛇的身上
167 
168                         for(bool judge=true;judge==true;)
169                         {food.x=rand()%(bound2.x/20)*20;
170                         food.y=(rand()%((bound2.y-20)/20))*20+20;
171                         for(int i=0;i<a.num;i++)
172                         if(food.x==a.node[i].x&&food.y==a.node[i].y)
173                             judge=true;
174                         else
175                             judge=false;
176                         }
177                              
178                         score+=10;
179                         if(score%100==0)//能被100，蛇的移动速度减慢一次
180                         {
181                                        intv-=30;
182                                        KillTimer(hwnd,1);
183                                        SetTimer(hwnd,1,intv,NULL);
184                                        rank++;//在记录分数的时候，分数每增长一位rank需要加1
185                         }
186                   
187                   }
188               for(i=1;i<=a.num-1;i++)
189                   {
190                        if((a.node[0].x==a.node[i].x&&a.node[0].y==a.node[i].y)||ismax(a.node[0],bound1,bound2,19))
191                        a.life=0;
192                   }    
193              if(a.life==1)
194              {
195                           wsprintf(sco,TEXT("SCORE: %5d            LV: %d"),score,rank);
196                           hdc=BeginPaint(hwnd,&ps);
197                           TextOut(hdc,20,0,sco,lstrlen(sco));
198                           SelectObject(hdc,hpen2);
199                           MoveToEx(hdc,0,1,NULL);
200                           LineTo(hdc,bound2.x,1);
201                           MoveToEx(hdc,0,16,NULL);
202                           LineTo(hdc,bound2.x,16);
203                           SelectObject(hdc,hpen1);
204                           rect(hdc,food,17);
205                           SelectObject(hdc,hpen);
206                           rect(hdc,a.node[0],17);
207                           SelectObject(hdc,hpenw);
208                           rect(hdc,era,17);
209                           EndPaint(hwnd,&ps);
210              }
211              else
212                  {
213                     if(MessageBox(NULL,TEXT("a"),TEXT("b"),0)==IDOK);
214                        PostQuitMessage (0);     
215                     }
216                            
217              break;
218         case WM_KEYDOWN:
219              
220               
221                    
222              switch(wParam)
223              {
224                            case VK_UP:
225                                 if(a.direct!=UP&&a.direct!=DOWN)
226                                 a.direct=UP;
227                                 break;
228                                 
229                            case VK_DOWN:
230                                if(a.direct!=UP&&a.direct!=DOWN)
231                                 a.direct=DOWN;
232                                 break;
233                            case VK_RIGHT:
234                              if(a.direct!=RIGHT&&a.direct!=LEFT)
235                                a.direct=RIGHT;
236                                break;
237                            case VK_LEFT:
238                                  if(a.direct!=RIGHT&&a.direct!=LEFT)
239                                  a.direct=LEFT;
240                                  break;
241                                 
242              }
243                   
244              InvalidateRect(hwnd,NULL,FALSE);
245              
246              
247              return 0;
248         default:                      /* for messages that we don‘t deal with */
249             return DefWindowProc (hwnd, message, wParam, lParam);
250     }
251 
252     return 0;
253 }