贪吃蛇小项目

#include  <curses.h>
#include  <stdlib.h>
#include <pthread.h>

#define UP    -1
#define DOWN   1
#define LEFT   2
#define RIGHT -2
typedef struct snake
{
	int hang;
	int lie;
	struct snake *next;
}Snake,*pSnake;
Snake food;

void  initFood()
{
	int x=rand()%20;
	int y=rand()%20;
	food.hang=x;
	food.lie=y;

}	
int   hasFood(int i,int j)
{

	if(food.hang==i && food.lie==j)
	{
		return 1;
	}
	return 0;
}
pSnake head=NULL;
pSnake tail=NULL;
int key;
int dir;
void  initNcurse()
{

	initscr();
	keypad(stdscr,1);
	noecho();
}

int   hassnakenode(int i,int j)
{
	struct   snake *p;
	p=head;

	while(p != NULL)
	{
		if(p->hang==i && p->lie==j)
		{
			return -1;
		}
		p=p->next;
	}

	return 0;
}

void  gamePic()
{
	int  hang;
	int  lie;


	move(0,0);

	for(hang=0;hang<20;hang++)
	{
		if(hang==0)
		{

			for(lie=0;lie<20;lie++)
			{
				printw("--");
			}

			printw("\n");

		}

		if(hang>=0 || hang<=19)
		{

			for(lie=0;lie<=20;lie++)
			{
				if(lie==0||lie==20)
				{
					printw("|");

				}


				else if(hassnakenode(hang,lie))
				{
					printw("[]");
				}else if(hasFood(hang,lie)){
					printw("##");
				}

				else
				{
					printw("  ");
				}
			}

			printw("\n");
		}


		if(hang==19)
		{

			for(lie=0;lie<20;lie++)
			{

				printw("--");

			}

			printw("\n");

			printw("by 110  key=%d\n",key);

		}
	}  

}



void    addNode()
{

	pSnake new=(pSnake)malloc(sizeof(Snake));

	switch(dir){
		case UP:
			new->hang=tail->hang-1;
			new->lie=tail->lie;
			break;
		case DOWN:
			new->hang=tail->hang+1;
			new->lie=tail->lie;
			break;
		case LEFT:
			new->hang=tail->hang;
			new->lie=tail->lie-1;
			break;
		case RIGHT:
			new->hang=tail->hang;
			new->lie=tail->lie+1;
			break;
	}
	new->next=NULL;

	tail->next=new;
	tail=new;
}

void   initsnake()
{

	pSnake p;
	dir=RIGHT;
	while(head!=NULL)
	{
		p=head;
		head=head->next;
		free(p);
	}

	initFood();
	head=(pSnake )malloc(sizeof(Snake));
	head->hang=2;
	head->lie=2;
	head->next=NULL;

	tail=head;

	addNode();
	addNode();
	addNode();
	addNode();

}

void  deleteNode()
{

	pSnake p;
	p=head;

	head=head->next;

	free(p);
}
int ifFoodDir()
{
	pSnake p;
	p=head;
	if(tail->hang<0 || tail->lie==0 || tail->hang==20 || tail->lie==20){
		return 1;
	}
	while(p->next!=NULL){
		if(p->hang==tail->hang&&p->lie==tail->lie){
			return 1;
		}
		p=p->next;
	}
	return 0;

}
void  movesnake()
{


	addNode();
	if(hasFood(tail->hang,tail->lie)){
		initFood();
	}else{
		deleteNode();
	}
	if(ifFoodDir()){
		initsnake();
}
}
void *RefreshJiemian()
{

	while(1)
	{          
		movesnake();
		refresh();
		gamePic();
		usleep(150000);
	//	sleep(1);
	}
}
void turn (int dires)
{
	if(abs(dir)!=abs(dires)){
		dir=dires;
	}

}
void *ChangeDire()
{
	while(1){
		key=getch();
		switch(key){
			case KEY_DOWN:
				turn(DOWN);
				break;

			case KEY_UP:
				turn(UP);
				break;

			case KEY_LEFT:
				turn(LEFT);
				break;

			case KEY_RIGHT:
				turn(RIGHT);
				break;

		}	
	}
}
int   main()
{
	pthread_t t1;
	pthread_t t2;

	initNcurse();
	initsnake();

	gamePic();
	pthread_create(&t1, NULL, RefreshJiemian, NULL);
	pthread_create(&t2, NULL, ChangeDire, NULL);


	while(1);
	getch();
	endwin();
	return  0; 

}