snake C

#pragma once

#include 
#include 
#include 
#include 

#define UP 'w'
#define DOWN 's'
#define LEFT 'a'
#define RIGHT 'd'

struct Food
{
  int x;
  int y;
}food;

typedef struct Snakes {
  int x;
  int y;
  struct Snakes* next;
}snake;
snake* head;
static int score = 0;

void gotoxy(int x, int y);
void gotoDelete(int x, int y);
void gotoprint(int x, int y);
void creategraph(char username[20]);
int clickControl(char username[20]);
void creatfood();
void initSnake();

#include "game.h"



void gotoxy(int x, int y) {
  COORD pos = { x,y };
  HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
  SetConsoleCursorPosition(hOut, pos);

}

void gotoDelete(int x, int y) {
  gotoxy(x,y);
  printf(" ");
}


void gotoprint(int x, int y) {
  gotoxy(x, y);
  printf("■");
}

void creategraph(char username[20]) {

  int i;
  //横向围墙 58 / 2 == 29;
  for (i = 0; i < 58; i += 2) {
    gotoprint(i, 0);
    gotoprint(i, 26);
  }

  //竖墙 围墙  1-25 中间有25行  + 头尾两行 27行

  for ( i = 1; i < 26; i++)
  {
    gotoprint(0,i);
    gotoprint(56,i);
  }
  gotoxy(60, 5);
  printf("hello,%s", username);
  gotoxy(60,15);
  printf("你当前的得分为: ");
  gotoxy(76,15);
  printf("%d", 0);
}

void creatfood() {

  int flags = 0;

  while (!flags) {

    srand((unsigned int)time(NULL));
    food.x = rand() % 53 + 2;
    food.y = rand() % 25 + 1;

    if (food.x % 2 != 0) {
      food.x = food.x + 1;
    }

    //不能与蛇身重复
    snake* p = head;

    while (p) {
      if (p->x == food.x && p->y == food.y) {
        break;
      }
      p = p->next;
    }
    flags = 1;
  }
  gotoxy(food.x, food.y);
  printf("#");
}

void initSnake() {
  head = (snake*)malloc(sizeof(snake));
  snake * p = (snake*)malloc(sizeof(snake));
  snake * q = (snake*)malloc(sizeof(snake));

  head->x = 16;
  head->y = 15;

  p->x = 16;
  p->y = 16;

  q->x = 16;
  q->y = 17;
  
  head->next = p;
  p->next = q;
  q->next = NULL;
  gotoprint(16, 15);
  gotoprint(16, 16);
  gotoprint(16, 17);
}

void Finish(char username[20], int score) {

  gotoxy(10, 10);
  printf("/******************************/");
  gotoxy(10, 20);
  printf("/******************************/");
  gotoxy(15, 14);
  printf("GAME OVER o(*￣▽￣*)o");
  gotoxy(18, 16);
  printf("%s,    你的得分 %d ", username, score);
  gotoxy(15, 18);
  printf("还不错哦，     继续努力O(∩_∩)O");
  gotoxy(0, 27);
  snake* p = head, * q;
  while (p != NULL) {
    q = p->next;
    free(p);
    p = q;
  }
  system("PAUSE");
}

void movingBoby(char ch) {


  //坐标修改
  int x = head->x;
  int y = head->y;
  int i = 0;
  switch (ch) {
  case UP:
    y -= 1;
    break;
  case DOWN:
    y += 1;
    break;
  case LEFT:
    x -= 2;
    break;
  case RIGHT:
    x += 2;
    break;

  default:
    ch = 0;
    break;
  }

  if (ch) {

    //消除尾节点
    snake* p = head;
    while (p->next->next != NULL) {
      p = p->next;
    }
    snake* q = p->next;
    gotoDelete(q->x, q->y);
    free(q);
    p->next = NULL;
    snake* newNode = (snake*)malloc(sizeof(snake));
    newNode->x = x;
    newNode->y = y;
    newNode->next = head;
    head = newNode;
    gotoprint(x, y);
    Sleep(100);
    
    if (score <= 10) {
      Sleep(500);
    }
    else if (score > 10 && score <= 50) {
      Sleep(300);
    }
    else if (score > 50 && score <= 200) {
      Sleep(100);
    }
    else {
      Sleep(50);
    }
  }

}



int collisionDetect(char username[20]) {

  if (head->x == 0 || head->x == 56 || head->y == 0 || head->y == 26) {
    Finish(username, score);
    return 0;
  }
  snake* p = head->next;
  while (p != NULL) {

    if (head->x == p->x && head->y == p->y) {
      Finish(username, score);
      return 1;
    }

    p = p->next;
  }

  if (head->x == food.x && head->y == food.y) {

    creatfood();
    snake* newNode = (snake*)malloc(sizeof(snake));
    newNode->next = NULL;
    snake* p = head;
    while (p->next != NULL) {
      p = p->next;
    }

    p->next = newNode;
    score += 10;
    gotoxy(76, 15);
    printf("%d", score);
  }

  return 0;
}

int clickControl(char username[20]) {
  char ch ='w';
  while (1) {
    if (collisionDetect(username) == 1)
      return 0;
    if (_kbhit()) {

      ch = _getch();

    }

    movingBoby(ch);
  }
  return 1;
}