include<windows.h>

include<stdlib.h>

include<stdio.h>

include<conio.h>

include<time.h>

define SNAKESIZE 100

define HEIGHT 24

define LENGTH 78

typedef struct{

int eat;
int ch=72;
int money=0;
int speed;
int length;
int x[SNAKESIZE];
int y[SNAKESIZE];

}SNAKE; SNAKE snake; typedef struct{

int x;
int y;

}FOOD; FOOD food; void settextcolor(int color){

SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), color);

} void gotoxy(int x,int y){

COORD c;
c.X=x;
c.Y=y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),c);

} void drawapple(){

gotoxy(food.x,food.y);
settextcolor(4);
printf("★");
settextcolor(7);
gotoxy(0,0);

} void eatfood(){

if(snake.x[0]==food.x&&snake.y[0]==food.y){
	snake.length++;
	snake.eat=1;
	snake.speed-=10;
	time_t t;
	srand((unsigned)time(&t));
	food.x=rand()%(LENGTH-4)/2*2+2;
	food.y=rand()%(HEIGHT-2)/2*2+1;
	snake.money+=10;
}

} void initgame(){

for(int i=0;i<=LENGTH;i+=2){
	gotoxy(i,0);
	printf("■");
	gotoxy(i,HEIGHT);
	printf("■");
}
for(int i=1;i<HEIGHT;i++){
	gotoxy(0,i);
	printf("■");
	gotoxy(LENGTH,i);
	printf("■");
}
snake.length=3;
snake.speed=200;
snake.x[0]=LENGTH/2+1;
snake.y[0]=HEIGHT/2;
gotoxy(snake.x[0],snake.y[0]);
settextcolor(6);
printf("■");
settextcolor(7);
for(int i=1;i<snake.length;i++){
	snake.x[i]=snake.x[i-1]+2;
	snake.y[i]=snake.y[i-1];
	gotoxy(snake.x[i], snake.y[i]);
	printf("■");
}
while(1){
	bool flag=true;
	food.x=rand()%(LENGTH-4)+2;
	food.y=rand()%(HEIGHT-2)+1;
	for(int i=0;i<snake.length;i++){
		if(snake.x[i]==food.x&&snake.y[i]==food.y){
			flag=false;
			break;
		}
	}
	if(flag&&food.x%2==0){
		break;
	}
}
drawapple();

} void turn(){

int pre_ch=snake.ch;
if(_kbhit()){
	snake.ch=_getch();
	if(snake.ch==224){
		snake.ch=_getch();
	}
	else{
		snake.ch=pre_ch;
	}
}
if(snake.eat==0){
	gotoxy(snake.x[snake.length-1],snake.y[snake.length-1]);
	printf("  ");
}
for(int i=snake.length-1;i>0;i--){
	snake.x[i]=snake.x[i-1];
	snake.y[i]=snake.y[i-1];
}
if(pre_ch==72&&snake.ch==80){
	snake.ch=72;
}
if(pre_ch==80&&snake.ch==72){
	snake.ch=80;
}
if(pre_ch==75&&snake.ch==77){
	snake.ch=75;
}
if(pre_ch==77&&snake.ch==75){
	snake.ch=77;
}
if(snake.ch==77){
	snake.x[0]+=2;
}
if(snake.ch==75){
	snake.x[0]-=2;
}
if(snake.ch==80){
	snake.y[0]++;
}
if(snake.ch==72){
	snake.y[0]--;
}
gotoxy(snake.x[0],snake.y[0]);
settextcolor(6);
printf("■");
settextcolor(7);
gotoxy(0,0);
snake.eat=0;

} bool over(){

for(int i=1;i<snake.length;i++){
	if(snake.x[0]==snake.x[i]&&snake.y[0]==snake.y[i]){
		return true;
	}
}
if(snake.x[0]<2|snake.x[0]>LENGTH-2||snake.y[0]<1||snake.y[0]>HEIGHT-1){
	return true;
}
return false;

} int main(){

initgame();
while(1){
	Sleep(200);
	snake.money++;
	turn();
	if(over()){
		break;
	}
	eatfood();
	drawapple();
}
gotoxy(30,12);
printf("GAME OVER");
gotoxy(30,13);
printf("得分 : %d",snake.money);
getchar();

}