snake-name-2.zip_snake

#include<graphics.h> #include<stdio.h> #include<time.h> #include<stdlib.h> #include<conio.h> #define leftx 0 #define lefty 0 #define rightx 600 #define righty 400 #define step 20 #define len_win 200 #define _MAXLEN 200 #define speed 200 #define KEY_ESC 0x1b #define KEY_UP 0x48 #define KEY_DOWN 0x50 #define KEY_LEFT 0x4b #define KEY_RIGHT 0x4d int endx; int endy; struct snake { int x[_MAXLEN]; int y[_MAXLEN]; int nnode; int direction; int live; }; void DrawGrid(void) { int i,j; i=0; j=0; setcolor(WHITE); setlinestyle(PS_SOLID,1); rectangle(leftx-1,lefty-1,rightx+1,righty+1); setcolor(BLACK); setlinestyle(PS_SOLID,1); for (i=lefty;i<=righty;i=i+step) { line(leftx,i,rightx/step*step,i); } for (j=leftx;j<=rightx;j=j+step) { line(j,lefty,j,righty/step*step); } } void getRANDXY(int *x,int *y) { *x=rand()%(rightx-leftx)/step*step; *y=rand()%(righty-lefty)/step*step; } void snakeint(struct snake *p) { p->live=1; p->direction=rand()%4+1; getRANDXY(&p->x[0],&p->y[0]); p->x[1]=p->x[0]+step; p->y[1]=p->y[0]; p->nnode=2; } void snakedraw(struct snake *p,int x,int y) { int i; setcolor(BLACK); rectangle(x,y,x+step,y+step); setcolor(RED); for (i=0;i<p->nnode;i++) { rectangle(p->x[i],p->y[i],p->x[i]+step,p->y[i]+step); } } void foodint(int *x,int *y) { getRANDXY(x,y); } void foodDraw(int x,int y) { setcolor(GREEN); rectangle(x,y,x+step,y+step); } void snakeMove(struct snake *p) { int i; for (i=p->nnode-1;i>0;i--) { p->x[i]=p->x[i-1]; p->y[i]=p->y[i-1]; } switch(p->direction) { case 1:p->x[0]+=step;break; case 2:p->x[0]-=step;break; case 3:p->y[0]-=step;break; case 4:p->y[0]+=step;break; } } void snakeCheck(struct snake *p) { int i; for(i=3;i<p->nnode;i++) { if (p->x[i]==p->x[0]&&p->y[i]==p->y[0]) { p->live=0; break; } } if (p->x[0]<leftx||p->x[0]>rightx||p->y[0]<lefty||p->y[0]>righty) { p->live=0; } } int foodCheck(struct snake *p,int *fx,int *fy) { if (p->x[0]==*fx &&p->y[0]==*fy) { p->x[p->nnode]=-10; p->y[p->nnode]=-10; p->nnode++; foodint(fx,fy); foodDraw(*fx,*fy); return 1; } return 0; } int readKey() { if (_kbhit()==0) { return 0; } else { int ch=getch(); if (ch==0xE0) { ch=getch(); return(ch); } } } int keyread2(int key,int dir) { if (key== KEY_UP ==1&&dir!=4) { dir=3; } if (key== KEY_DOWN ==1&&dir!=3) { dir=4; } if (key== KEY_RIGHT ==1&&dir!=2) { dir=1; } if (key== KEY_LEFT ==1&&dir!=1) { dir=2; } return dir; } void main() { struct snake p; int fx,fy,key,sun; initgraph(rightx+step+1,righty+step+30); DrawGrid(); srand(time(NULL)); snakeint(&p); foodint(&fx,&fy); foodDraw(fx,fy); while(1) { while(!_kbhit()) { snakeMove(&p); snakeCheck(&p); foodCheck(&p,&fx,&fy); if(p.live==0) { break; } snakedraw(&p,endx,endy); sun=p.nnode-1; endx=p.x[sun]; endy=p.y[sun]; Sleep(speed); } if (p.live==0) { break; } else { key=readKey(); if (key==KEY_ESC) { break; } p.direction=keyread2(key,p.direction); } } outtextxy(250,200,"GAME OVER"); getch(); closegraph(); }