贪吃蛇-----128-152节

运行环境：Linux

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

#define UP     1
#define DOWN  -1
#define LEFT   2
#define RIGHT -2

struct Snake 
{
	int hang;
	int lie;
	struct Snake *next;
};

struct Snake *head;
struct Snake *tall;
int key;
int dir;
struct Snake food;

void iniFood()
{
	int x = rand()%20;
	int y = rand()%20;

	food.hang = x;
	food.lie = y;

	x+=3;
	y+=4;
}

void inicurses()
{	
	initscr();
	keypad(stdscr,1);
	noecho();//防止不需要的东西打印出来
}
int dingWeiPanDuan(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;
}
int dingWeiFood(int i,int j)
{
	if(food.hang == i && food.lie == j){
		return 1;
	}
	return 0;
}
void map()
{
	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");
		}

		for(lie = 0; lie<=20; lie++){
			if(lie == 0 || lie == 20){
				printw("|");
			}else if(dingWeiPanDuan(hang,lie)){
				printw(")(");
			}else if(dingWeiFood(hang,lie)){
				printw("**");
			}
			else{
				printw("  ");
			}
		}
		printw("\n");
		if(hang == 20){
			for(lie = 0;lie<20;lie++){
				printw("--");
			}
			printw("\n");
			printw("By smallSnake,foog.hang = %d,food.lie = %d\n",food.hang,food.lie);
		}
	}

}
void addNode()
{
	struct Snake *new =(struct Snake *)malloc(sizeof(struct Snake));
	new->next = NULL;

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

	tall->next = new;
	tall = new;

}
void inisnake()
{
	struct Snake *p;
	dir = RIGHT; 

	while(head != NULL){//释放死亡后的节点
		p = head;
		head = head->next;
		free(p);
	}

	iniFood();	

	head =(struct Snake *)malloc(sizeof(struct Snake));
	head->hang = 1;
	head->lie = 1;
	head ->next = NULL;
	tall = head;

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

}
void deleNode()
{
	struct Snake *p;
	p = head;
	head = head->next;

	free(p);
}
int ifSnakeDie()
{
	struct Snake *p;

	p = head;

	if(tall->hang < 0 || tall->lie == 0 ||tall->hang == 20 ||tall->lie == 20){
		return 1;
	}

	while(p->next!=NULL){
		if(p->hang == tall->hang && p->lie == tall->lie){
			return 1;
		}
		p=p->next;
	}
	return 0;
}
void moveSnake()
{
	addNode();
	if(dingWeiFood(tall->hang,tall->lie)){
		iniFood();
	}
	else{
		deleNode();
	}
 
	if(ifSnakeDie()){
		inisnake();
	} 
}
void* refreshMap()
{
	while(1){
		moveSnake();
		map();
		refresh();
		usleep(100000);
	}

}
void turn(int dirAbsolute)
{
	if(abs(dir) != abs(dirAbsolute)){
		dir = dirAbsolute;
	}
}
void *direction()//空型void指针
{
	while(1){
		key = getch();
		switch(key){
			case KEY_DOWN:
				turn(DOWN);
				//dir = DOWN;
				break;
			case KEY_UP:
				turn(UP);
				//dir = UP;
				break;
			case KEY_LEFT:
				turn(LEFT);
				//dir = LEFT;
				break;
			case KEY_RIGHT:
				turn(RIGHT);
				//dir = RIGHT;
				break;
		}
	}

}
int main()
{

	pthread_t t1;//创建线程
	pthread_t t2;

	inicurses();
	inisnake();
	map();

	pthread_create(&t1,NULL,refreshMap,NULL);
	pthread_create(&t2,NULL,direction,NULL);//类似原型
	while(1);
	endwin();
	return 0;
}