Linux下C語言實現貪吃蛇小遊戲

#include<curses.h>
#include<stdlib.h>
#define UP 1 //1與-1的目的是使用abs()函數防止一上一下
#define DOWN -1
#define LEFT 2
#define RIGHT -2
struct Snake{ //創建一個結構體
 int hang;
 int lie;
 struct Snake *next;
};
struct Snake *head = NULL; //全局定義一個頭和尾
struct Snake *tail= NULL;
int key; //定義一個按鍵的整形變量
int dir;//定義一個方向的整形變量
struct Snake food;
void initFood(){ //定義一個食物## 可以隨機生成
 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){ //顯示蛇身體
 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){ //有食物
 if(food.hang == i && food.lie == j){
 return 1;
 }
 return 0;
}
void gamePic(){ //遊戲圖形化展示
 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 ricko");
 }
 }
}
void addNode(){ //加頭並且方向
 struct Snake *new = (struct Snake *)malloc(sizeof(struct Snake));
 new->next = NULL;
 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;
 }
 tail->next = new;
 tail = new;
}
void initSnake(){ //初始化蛇
 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;
 tail = head;
 addNode();
 addNode();
 addNode();
 addNode();
}
void deleNode(){ //刪除最後節點
 struct Snake *p;
 p = head;
 head = head->next;
 free(p);
}
int ifSnakeDie(){ //在撞到邊界以及自己遲到自己的時候會輸出一個1讓自己復活
 struct Snake *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(){ //蛇的移動
 addNode();
 if(hasFood(tail->hang,tail->lie)){ //如果吃到食物就不刪除最後的節點
 initFood();
 }else{
 deleNode();
 }
 if(ifSnakeDie()){
 initSnake(); 
 }
}
void refreshJieMian(){ //刷新界面 線程
 while(1){
 moveSnake();
 gamePic();
 refresh();
 usleep(150000); //刷新頻率
 }
}
void turn(int direction){ //防止方向鍵按瞭上又按下
 if(abs(dir) != abs(direction)){
 dir = direction;
 }
}
void changeDir(){ //改變方向
 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; //定義線程1
 pthread_t t2; 
 initNcurse(); //初始化ncurse
 initSnake(); //初始化蛇
 gamePic();  //初始化界面
 pthread_create(&t1,NULL,refreshJieMian,NULL);//啟動線程裡面的函數
 pthread_create(&t2,NULL,changeDir,NULL);
 while(1);//線程3
 getch();
 endwin();
 return 0;
}

gcc snake.c -lcurses -lpthread

./a.out