Linux环境下，基于Ncurse图形库贪吃蛇小游戏（下）

Posted 2021-08-15 橙子果果

Linux环境下，基于Ncurse图形库贪吃蛇小游戏（下）

蛇移动的不合理（用绝对值来解决）
蛇吃食物（链表的添加和食物的随机出来）
蛇自己咬死自己（尾节点与其余节点重合初始化蛇）

最后完全代码：

#include <curses.h>
#include <stdlib.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;
};

int key;
int dir;

struct Snake *head = NULL;
struct Snake *tail = NULL;

struct Snake food;

void initFood()
			{
        int x = rand()%20;
        int y = rand()%20;
        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 Chengzi!");
                }
        }
}
void addNode()
{
        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()
{
        struct Snake *p;

        dir = RIGHT;

        initFood();
        while(head!=NULL){
                p = head;
                head = head->next;
                free(p);
        }
        head = (struct Snake *)malloc(sizeof(struct Snake));
        head->hang = 2;
        head->lie = 2;
        head->next = NULL;
        tail = head;

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

int ifSnakeDle()
{
        struct Snake *p;
        p = head;
        if (tail->hang<0 || tail->hang == 20 || tail->lie == 0 || 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{
                deleNode();
        }
        if (ifSnakeDle())
        {
                initSnake();
        }
}
void* refreshJM()
{
         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 th1;
        pthread_t th2;

        initNcurse();
        initSnake();

        gamePic();

        pthread_create(&th1,NULL,refreshJM,NULL);
        pthread_create(&th2,NULL,changeDir,NULL);
        while(1);
        getch();
        endwin();
        return 0;
}

代码运行要加上 -lcurses -lpthread

最后是游戏实现的界面