贪吃蛇代码第一天

void initscr_func(){
    initscr();
    keypad(stdscr,true);
}

//贪吃蛇创建
snake_t* create_snake(int row, int col){
        snake_head = (snake_t*)malloc(sizeof(snake_t));  //蛇头分配内存
        snake_head->row = row;  //蛇头在的行数
        snake_head->col = col;  //蛇头在的列数
        snake_head->next = NULL;
        snake_tail=snake_head;  //初始化蛇头和蛇尾的位置
        add_snake_body();  //添加蛇身体
        add_snake_body();
        return snake_head;
        
}

//添加贪吃蛇身体
void add_snake_body(){
        snake_t *snake_body = (snake_t*)malloc(sizeof(snake_t));  //蛇身体分配内存
        while (snake_tail->next!=NULL){
            snake_tail=snake_tail->next;      //找到尾节点
        }
        snake_body->row = snake_tail->row;  //蛇身体行坐标与尾节点坐标相同
        snake_body->col = snake_tail->col+1;  //蛇身体纵坐标在尾节点的右边
        snake_body->next = NULL;  //蛇身体的下一个节点为空

        snake_tail->next = snake_body;  //尾节点的下一个节点指向蛇身体
        snake_tail=snake_body;  //更新尾节点
}

//delete snake body(head delete)
void rig_delete_snake_body(){
    snake_t *p;
    if(snake_head!=NULL){
        p=snake_head;  //保存头节点
        snake_head=snake_head->next;  //头节点指向下一个节点
    }
    free(p);  //释放头节点内存
}
//judge has snake body
int has_snake_body(int row, int col){
    snake_t *p = snake_head;
    while(p!=NULL){
        if(p->row==row&&p->col==col){
            return 1;
        }
         p = p->next;
    } 
    return 0;
}

bool snake_need_init(){
    // if(snake_head->row==0||snake_head->col==0||snake_head->row==20||snake_head->col==20){
    //     return true;
    // }
    // else 
    if (snake_tail->row==MIN||snake_tail->col==MIN||snake_tail->row==HEIGHT-1||snake_tail->col==HEIGHT-1){
        return true;
    }
    else{
        return false;
    }
    
}

//right move
void rig_move_snake(){
    


    //判读是否需要重新开始游戏
    if (snake_need_init()==true){
        snake_t *old_sanke_head =NULL;

        //游戏初始前，回收上一次蛇身子
        while(snake_head!=NULL){
        old_sanke_head = snake_head;
        snake_head = snake_head->next;
        free(old_sanke_head);
        }
        
        create_snake(6,6); //创建蛇
        map_init(WIDHT,HEIGHT);
    }

    //不需要重新开始游戏
    else{
        rig_delete_snake_body();
        add_snake_body();
        map_init(WIDHT,WIDHT);
    }
    
}

//right move
void rig_move_snake(){
    


    //判读是否需要重新开始游戏
    if (snake_need_init()==true){
        snake_t *old_sanke_head =NULL;

        //游戏初始前，回收上一次蛇身子
        while(snake_head!=NULL){
        old_sanke_head = snake_head;
        snake_head = snake_head->next;
        free(old_sanke_head);
        }
        
        create_snake(6,6); //创建蛇
        map_init(WIDHT,HEIGHT);
    }

    //不需要重新开始游戏
    else{
        rig_delete_snake_body();
        add_snake_body();
        map_init(WIDHT,WIDHT);
    }
    
}

//初始化地图
void map_init(int witdh, int height)
{
    int row,col;
    
    
    move(MIN,MIN); //复位光标
    
    for (row = 0; row < witdh; row++)  //打印地图边界
    {
        if(row==0){
            for (col = 0; col < height; col++){
                printw("--");

            }
            
        }
        printw("\n");
        
            for (col = 0; col <= height; col++){
                if (col==0||col==height)
                {
                    printw("|");
                }
                else if(has_snake_body(row,col)){
                  printw("[]");
                }
                else{
                    printw("  ");
                }
            }
            printf("\n"); 
        
    
    }
    printw("\n");
        for (col = 0; col < height; col++){
        printw("--");
        }

        move(MIN,MIN); //复位光标,防止光标在最后一行
}