#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<windows.h>
#define High 20
#define Width 30
int canvas[High][Width]={0};
int moveDirection;
int food_x,food_y;
void gotoxy(int x,int y)
{
HANDLE handle=GetStdHandle(STD_OUTPUT_HANDLE);
COORD pos;
pos.X=x;
pos.Y=y;
SetConsoleCursorPosition(handle,pos);
}
void startup()
{int i,j;
for(i=0;i<High;i++)
{
canvas[i][0]=-1;
canvas[i][Width-1]=-1;}
for(j=0;j<Width;j++)
{canvas[0][j]=-1;
canvas[High-1][j]=-1;}
canvas[High/2][Width/2]=1;
for(i=1;i<=4;i++)
canvas[High/2][Width/2-i]=i+1;
moveDirection=4;
food_x=rand()%(High-2)+2;
food_y=rand()%(Width-2)+2;
canvas[food_x][food_y]=-2;
}
void show()
{gotoxy(0,0);
int i,j;
for(i=0;i<High;i++)
{for(j=0;j<Width;j++)
{if (canvas[i][j]==0)
printf(" ");
else if(canvas[i][j]==-1)
printf("#");
else if(canvas[i][j]==1)
printf("@");
else if(canvas[i][j]>1)
printf("*");
else if(canvas[i][j]==-2)
printf("F");
}
printf("\n");
}
Sleep(100);
}
void moveSnakeByDirection()
{int oldTail_i,oldTail_j,newHead_i,newHead_j,oldHead_i,oldHead_j;
int max=0;
int i,j;
for(i=0;i<High;i++)
{for(j=0;j<Width;j++)
{if(canvas[i][j]>0)
canvas[i][j]++;
if(canvas[i][j]>max)
{
max=canvas[i][j];
oldTail_i=i;
oldTail_j=j;}
if(canvas[i][j]==2)
{
oldHead_i=i;
oldHead_j=j;}
}
}
if(moveDirection==1)
{
newHead_i=oldHead_i-1;
newHead_j=oldHead_j;}
else if(moveDirection==2)
{
newHead_i=oldHead_i+1;
newHead_j=oldHead_j;}
else if(moveDirection==3)
{
newHead_i=oldHead_i;
newHead_j=oldHead_j-1;}
else if(moveDirection==4)
{
newHead_i=oldHead_i;
newHead_j=oldHead_j+1;}
if(canvas[newHead_i][newHead_j]==-2)
{canvas[food_x][food_y]=0;
food_x=rand()%(High-2)+2;
food_y=rand()%(Width-2)+2;
canvas[food_x][food_y]=-2;}
else
canvas[oldTail_i][oldTail_j]=0;
if(canvas[newHead_i][newHead_j]==-1 ||canvas[newHead_i][newHead_j]>0)
{printf("error,game over!!!\n");
Sleep(2000);
system("pause");
exit(0);
}
else
canvas[newHead_i][newHead_j]=1;}
void updateWithoutInput()
{
moveSnakeByDirection();
}
void updateWithInput()
{
char input;
if(kbhit())
{input=getch();
if(input=='a')
{moveDirection=3;
moveSnakeByDirection();
}
else if(input=='d')
{moveDirection=4;
moveSnakeByDirection();
}
else if(input=='w')
{moveDirection=1;
moveSnakeByDirection();
}
else if(input=='s')
{moveDirection=2;
moveSnakeByDirection();
}
}
}
int main()
{startup();
while(1)
{show();
updateWithoutInput();
updateWithInput();
}
return 0;
}
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