Linux下C语言编写贪吃蛇小游戏源码

#include<curses.h>
#include<stdlib.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= NULL;
struct snake *tall= NULL;
int key;
int dir;
struct snake food;
void initfood()
{
  int x = rand()%19;
  int y = rand()%19;
  food.hang = x;
  food.lie = y;
}
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;
}
int hasfood(int i,int j)
{
  if(food.hang == i && food.lie ==j){
    return 1;
  }
  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 liuzhihao,food.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 initsnake()
{ 
  struct snake *p;
  dir = RIGHT;
  while(head!=NULL){
    p=head;
    head = head -> next;
    free(p);
  }
  initfood();
  head = (struct snake *)malloc(sizeof(struct snake));
  head->hang = 1;
  head -> lie = 1;
  head -> next = NULL;
  tall = head;
  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(hasfood(tall -> hang, tall-> lie)){
    initfood();
  }
  else {
    delenode();
  }
  if(ifsnakedie()){
    initsnake();
  }
}
void refreshjiemian()
{
  while(1){
    movesnake();
    gamepic();
    refresh();
    usleep(100000);
  }
}
void turn(int direction)
{
  if(abs(dir)!=abs(direction)){
    dir = direction;
  }
}
void changedir()
{
  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,changedir,NULL);
  while(1);
  getch();
  endwin();
  return 0;
}