上次不是写了个贪吃蛇么，我觉得不够好看
学了学EasyX，决定给他美化一下并重构了函数
大致思路就是先画线格，然后决定地图的大小，这就是蛇的运动路线
然后拐弯什么的通过枚举方向处理蛇头就行，增长长度就是给蛇添加数量就行，我这里就是把蛇处理成结构体
其他思路也就是大致一样的，具体看代码咯，撞墙就是看它蛇头会不会越界就行了
看代码吧
#define _CRT_SECURE_NO_WARNINGS
//因为我用的是VS2019，这里取消一下安全性检查（这里代码都是c++了昂）
#include<graphics.h>
//EasyX的库
#include <conio.h>
//随机函数
#include<stdio.h>
#include<time.h>
enum dir{
left,right,up,down};
bool ai = false;
//描述一个点
struct point {
int x;
int y;
};
//蛇的结构体
struct snake {
struct point xy[100];
int num;
char position;
}bigsnake;
//展示分数用
int score = 0;
void drawline() {
//这里的函数是设置线的颜色，然后规定窗口大小，然后画线
setlinecolor(RGB(232, 232, 236));
rectangle(0, 0, 800, 600);
for (int x = 0; x <= 800; x += 10) {
for (int y = 10; y <= 600; y += 10) {
line(x, 0, x, 600);
line(0, y, 800, y);
}
}
}
//初始化蛇
void initSnake() {
bigsnake.num = 3;
bigsnake.position = right;
for (int i = bigsnake.num - 1; i >= 0; i--) {
bigsnake.xy[i].x = 10 *( (bigsnake.num - 1) - i);
bigsnake.xy[i].y = 20;
}
}
//画蛇
void drawSnake() {
for (int i = 0; i < bigsnake.num; i++)
{
//设置颜色
setlinecolor(BLACK);
//设置填充的颜色，随机颜色变成大彩蛇，非常银杏
setfillcolor(RGB(rand() % 256, rand() % 256, rand() % 256));
fillrectangle(bigsnake.xy[i].x, bigsnake.xy[i].y, bigsnake.xy[i].x+10, bigsnake.xy[i].y+10);
}
}
//移动蛇的函数，这里唯一要理解的就是这个枚举类型，其他的就是将前一个的位置付给下一个就能实现移动
void movesnake() {
for (int i = bigsnake.num - 1; i>0 ; i--)
{
bigsnake.xy[i].x = bigsnake.xy[i-1].x;
bigsnake.xy[i].y = bigsnake.xy[i-1].y;
}
switch (bigsnake.position)
{
case left:
bigsnake.xy[0].x -= 10;
break;
case right:
bigsnake.xy[0].x += 10;
break;
case up:
bigsnake.xy[0].y -= 10;
break;
case down:
bigsnake.xy[0].y += 10;
break;
}
}
//异步函数不用多说
void keydown() {
if (GetAsyncKeyState('W') || GetAsyncKeyState(VK_UP) && bigsnake.position != down) {
bigsnake.position = up;
}
if (GetAsyncKeyState('S') || GetAsyncKeyState(VK_DOWN) && bigsnake.position != up) {
bigsnake.position = down;
}
if (GetAsyncKeyState('A') || GetAsyncKeyState(VK_LEFT) && bigsnake.position != right) {
bigsnake.position = left;
}
if (GetAsyncKeyState('D') || GetAsyncKeyState(VK_RIGHT) && bigsnake.position != left) {
bigsnake.position = right;
}
if (GetAsyncKeyState('R')) system("pause");
if (GetAsyncKeyState('T')) ai = true;
if (GetAsyncKeyState('Y')) ai = false;
}
//描述食物
struct sfood {
struct point xy;
int flag;
}food;
//这里是实现了自动吃的模块，就是一个简单的计算，自行理解，这个不是真的就是万能的，本人太菜了并不能实现高级的算法
void keyDownAI()
{
if (food.xy.x > bigsnake.xy[0].x && bigsnake.position != left)
{
bigsnake.position = right;
}
else if (food.xy.x < bigsnake.xy[0].x && bigsnake.position != right)
{
bigsnake.position = left;
}
else if (food.xy.y > bigsnake.xy[0].y && bigsnake.position != up)
{
bigsnake.position = down;
}
else if (food.xy.y < bigsnake.xy[0].y && bigsnake.position != down)
{
bigsnake.position = up;
}
}
//初始化食物
void initfood() {
food.xy.x = rand() % 80 * 10;
food.xy.y = rand() % 60 * 10;
int flag = 1;
while (flag)
{
flag = 0;
for (int i = 0; i < bigsnake.num; i++)
{
if (bigsnake.xy[i].x == food.xy.x && bigsnake.xy[i].y == food.xy.y)
{
flag = 1;
food.xy.x = rand() % 80 * 10;
food.xy.y = rand() % 60 * 10;
}
}
}
food.flag = 1;
}
//画食物跟前面一样的
void drawFood()
{
setlinecolor(BLACK);
setfillcolor(RGB(rand() % 256, rand() % 256, rand() % 256));
fillrectangle(food.xy.x, food.xy.y, food.xy.x + 10, food.xy.y + 10);
}
//吃食物事件
void eatfood() {
if (food.xy.x == bigsnake.xy[0].x && food.xy.y == bigsnake.xy[0].y) {
bigsnake.num++;
food.flag = 0;
score += 10;
}
}
//显示分数，里面的函数自己可以百度一下
void showscore(int x, int y, int score) {
//设置模式
setbkmode(TRANSPARENT);
//设置字体颜色，不要问我为什么绿
settextcolor(GREEN);
//楷体，十五格高，宽度为零表示自适应
settextstyle(15, 0, "楷体");
char scoreStr[20] = "";
sprintf(scoreStr, "分数:%d", score);
outtextxy(x, y, scoreStr);
}
//撞墙的事件
bool hitboard() {
if (bigsnake.xy[0].x < 0 || bigsnake.xy[0].y < 0 || bigsnake.xy[0].x + 10>800 || bigsnake.xy[0].y + 10>600) {
return true;
}
return false;
}
bool hitsnake()
{
for (int i = 1; i < bigsnake.num; i++)
{
if (bigsnake.xy[0].x == bigsnake.xy[i].x && bigsnake.xy[0].y == bigsnake.xy[i].y)
return true;
}
return false;
}
//主函数
int main() {
srand((unsigned int)time(NULL));
HWND hwnd = initgraph(800, 600);
setbkcolor(WHITE);//背景颜色设置
cleardevice();//清空界面
initSnake();//初始化蛇
food.flag = 0;//食物默认不存在，之后初始化就存在了
while (1) {
BeginBatchDraw();//开始画画的函数，必须声明
cleardevice();//清屏
drawline();
if (food.flag == 0) {
initfood();
}
if (hitboard()) {
MessageBox(hwnd, "撞到墙了","GAMEOVER", MB_OK);
break;
}
if (hitsnake()) {
MessageBox(hwnd,"撞到蛇身了","GAMEOVER",MB_OK);
break;
}
if (ai) keyDownAI();
drawFood();
showscore(0, 10, score);
eatfood();
movesnake();
keydown();
drawSnake();
EndBatchDraw();
}
closegraph();//关掉画
return 0;
}
以下效果图：
实际运行起来挺好的，人生一大进步算是吧。
蒟蒻就这样了，源代码搬走，什么发挥都可以的。