贪食蛇
Posted maoruimas
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#include<bits/stdc++.h>
#include<conio.h>
using namespace std;
#define ms(a) memset(a,0,sizeof a)
const int maxn=1e2;
int grid[maxn][maxn];
char chain[maxn][maxn];
int N,M,cnt;
pair<int,int> head,tail,food;
map<char,pair<int,int> > direction;
map<pair<int,int>,char> inv_direction;
void init()
{
srand((unsigned)time(NULL));
ms(grid);
ms(chain);
cnt=1;
direction[‘a‘]=make_pair(0,-1);
direction[‘d‘]=make_pair(0,1);
direction[‘w‘]=make_pair(-1,0);
direction[‘s‘]=make_pair(1,0);
inv_direction[make_pair(0,-1)]=‘a‘;
inv_direction[make_pair(0,1)]=‘d‘;
inv_direction[make_pair(-1,0)]=‘w‘;
inv_direction[make_pair(1,0)]=‘s‘;
head=tail=make_pair(rand()%N+1,rand()%M+1);
food=make_pair(rand()%N+1,rand()%M+1);
grid[head.first][head.second]=1;
}
bool judge(int x,int y)
{
if(x<1||x>N||y<1||y>M)return false;
return grid[x][y]==0;
}
char c=‘w‘,cc=‘w‘;
bool Move(char ch)
{
pair<int,int> dir=direction[ch];
//head
int x,y;
x=head.first+dir.first;
y=head.second+dir.second;
if(!judge(x,y))
{
if(x>=1&&x<=N&&y>=1&&y<=M)
{
char tmp=chain[x][y];
if(direction[tmp].first+dir.first==0&&direction[tmp].second+dir.second==0)
{
c=cc;
Move(c);
return true;
}
}
return false;
}
cc=c;
grid[x][y]=1;
chain[head.first][head.second]=inv_direction[dir];
head=make_pair(x,y);
//tail
if(x==food.first&&y==food.second)
{
food=make_pair(rand()%N+1,rand()%M+1);
cnt++;
return true;
}
x=tail.first,y=tail.second;
dir=direction[chain[x][y]];
tail=make_pair(x+dir.first,y+dir.second);
grid[x][y]=0;
chain[x][y]=0;
return true;
}
void Print()
{
system("cls");
for(int i=1;i<=M+2;++i)printf("X");printf("
");
for(int i=1;i<=N;++i)
{
printf("X");
for(int j=1;j<=M;++j)
{
if(i==food.first&&j==food.second)printf("*");
else if(grid[i][j])printf("O");
else printf(" ");
}
printf("X
");
}
for(int i=1;i<=M+2;++i)printf("X");printf("
");
}
int main()
{
printf("(N,M)=");
scanf("%d%d",&N,&M);
init();
Print();
while(1)
{
int tmp=500-cnt*10;
tmp=max(tmp,50);
_sleep(tmp);
if(kbhit())c=getch();
if(c!=‘a‘&&c!=‘s‘&&c!=‘d‘&&c!=‘w‘)continue;
if(!Move(c))
{
printf("You lose, LOSER!
");
break;
}
Print();
}
main();
}
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