c语言贪吃蛇(极简版，根本能玩)
c语言贪吃蛇https://i-blog.csdnimg.cn/direct/7477ab99c53d4d3db6f7ed773b665579.png
团体逻辑
[*]界面绘制
[*]定义结构体以及结构体的初始化
2.1 一节变三节
[*]蛇的移动
3.1 监控键盘
3.2 蛇的移动
[*]食物
4.1 定义
4.2 初始化
4.3 食物的绘制
[*]食物的再生与身材增长、分数
[*]死亡与竣事
[*]优化
7.1 getch()函数会返回两个数值，过滤第一个，留下第二个真实键值
界面绘制与主函数
#include<graphics.h> //图形界面库
#include<stdio.h>
#include<stdlib.h>
int main()
{
//界面绘制
initgraph(WIN_WIDTH, WIN_HEIGTH);//初始化窗口
setbkcolor(RGB(207, 214, 229));//设置背景颜色
cleardevice();//刷新窗口
//初始化
GemeInit();
while (1) {
//绘制
GameDraw();
//移动
GameMove();
BeginBatchDraw();//双缓存机制，减少闪烁
//控制键盘
KeyControl;
FlushBatchDraw();//刷新双缓冲区
EatFood();
Sleep(100);
}
}
定义和初始化
[*] 蛇
//定义蛇
struct Snake {
int num; //蛇身长
int dir; //方向
int score; //分数
int size; //蛇的宽和高 定位
int speed;//蛇速度
//坐标
struct Pos coor;
}snake;
// 定位
struct Pos
{
int x;
int y;
};
[*] 食物
//定义食物
struct Food {
int x;
int y;
bool flag;//判断食物是否存在
}food;
[*] 初始化
//初始化
void GemeInit() {
snake.num = 3;
snake.dir = RIGHT;
snake.score = 0;
snake.size = 15;
snake.speed = 10;
//三节蛇身的初始化
snake.coor.x = 200;//修改初始位置，避免蛇身重叠
snake.coor.y = 200;
snake.coor.x = 185;
snake.coor.y = 200;
snake.coor.x = 170;
snake.coor.y = 200;
//食物的初始化
food.x = rand() % (WIN_WIDTH / 10) * 10;
food.y = rand() % (WIN_HEIGTH / 10) * 10;
food.flag = true;
}
根据坐标绘制图形
[*] 绘制蛇身、食物、分数
void GameDraw() {
cleardevice();//清屏
//三节蛇身
for (int i = 0; i < snake.num; i++)
{
//蛇的填充色
setfillcolor(BLACK);
//画矩形
fillrectangle(snake.coor.x, snake.coor.y, snake.coor.x + snake.size, snake.coor.y + snake.size);
}
//食物，复用蛇身
setfillcolor(BLACK);
fillrectangle(food.x, food.y, food.x + snake.size, food.y + snake.size);
//分数
char temp = "";
sprintf(temp, "分数%d", snake.score);
outtextxy(10, 10, temp);
}
蛇的移动
[*] 监控键盘
void KeyControl() {
//只有按键按下时才处理
if (_kbhit()) {
char key = _getch();//接收getch()函数的第一个返回值
char key2 = _getch();//接收getch()函数的第二个返回值，即真实键值
if (key == -32) {
switch (key2) {
case 72:
if (snake.dir != DOWN) {
snake.dir = UP;
printf("↑\n");
}
break;
case 75:
if (snake.dir != RIGHT) {
snake.dir = LEFT;
printf("←\n");
}
break;
case 77:
if (snake.dir != LEFT) {
snake.dir = RIGHT;
printf("→\n");
}
break;
case 80:
if (snake.dir != UP) {
snake.dir = DOWN;
printf("↓\n");
}
break;
}
}
}
}
[*] 蛇的移动
void GameMove() {
//从蛇尾开始覆盖，a,b,c三节考虑。
for (int i = snake.num - 1; i > 0; i--) {
snake.coor.x = snake.coor.x;
snake.coor.y = snake.coor.y;
}
switch (snake.dir) {
case UP:
snake.coor.y -= snake.speed;
break;
case DOWN:
snake.coor.y += snake.speed;
break;
case LEFT:
snake.coor.x -= snake.speed;
break;
case RIGHT:
snake.coor.x += snake.speed;
break;
}
}
吃食物
[*] 消失与再生
//吃食物
void EatFood() {
if (food.flag && snake.coor.x == food.x && snake.coor.y == food.y) {
food.flag = false;
snake.num++;
snake.score += 10;
}
CreateFood();
}
//生成食物
void CreateFood() {
if (!food.flag) {
food.x = rand() % (WIN_WIDTH / 10) * 10;
food.y = rand() % (WIN_HEIGTH / 10) * 10;
food.flag = true;
}
}
完备代码
/*1. 界面绘制2. 定义结构体以及结构体的初始化 2.1 一节变三节，绘制蛇身3. 蛇的移动 3.1 监控键盘 3.2 蛇的移动4. 绘制食物 4.1 定义 4.2 初始化 4.3 食物的绘制5. 食物的再生与身材增长、分数6. 死亡与竣事7. 优化 7.1 getch()函数会返回两个数值，过滤第一个，留下第二个真实键值*/#include<graphics.h> //图形界面库#include<stdio.h>#include <conio.h> //键盘监控#include<stdlib.h>#define MAX_SNAKE 500#define WIN_WIDTH 640#define WIN_HEIGTH 480// 定位struct Pos{ int x; int y;};// 蛇的结构体struct Snake { int num; //蛇身长 int dir; //方向 int score; //分数 int size; //蛇的宽和高 定位 int speed;//蛇速率 //坐标 struct Pos coor;}snake;struct Food { int x; int y; bool flag;//判断食物是否存在}food;//枚举范例定义方向enum DIR { UP, DOWN, LEFT, RIGHT};//初始化void GemeInit() { snake.num = 3; snake.dir = RIGHT; snake.score = 0; snake.size = 15; snake.speed = 10; //三节蛇身 snake.coor.x = 200;//修改初始位置，制止蛇身重叠 snake.coor.y = 200; snake.coor.x = 185; snake.coor.y = 200; snake.coor.x = 170; snake.coor.y = 200; //食物 food.x = rand() % (WIN_WIDTH / 10) * 10; food.y = rand() % (WIN_HEIGTH / 10) * 10; food.flag = true;}// 绘制三节蛇身、食物、分数void GameDraw() { cleardevice();// for (int i = 0; i < snake.num; i++) { //蛇的填充色 setfillcolor(BLACK); //画矩形 fillrectangle(snake.coor.x, snake.coor.y, snake.coor.x + snake.size, snake.coor.y + snake.size); } //食物的填充色 setfillcolor(BLACK); //画矩形 fillrectangle(food.x, food.y, food.x + snake.size, food.y + snake.size); char temp = ""; sprintf(temp, "分数%d", snake.score); outtextxy(10, 10, temp);}//蛇的移动void GameMove() {
//从蛇尾开始覆盖，a,b,c三节考虑。
for (int i = snake.num - 1; i > 0; i--) {
snake.coor.x = snake.coor.x;
snake.coor.y = snake.coor.y;
}
switch (snake.dir) {
case UP:
snake.coor.y -= snake.speed;
break;
case DOWN:
snake.coor.y += snake.speed;
break;
case LEFT:
snake.coor.x -= snake.speed;
break;
case RIGHT:
snake.coor.x += snake.speed;
break;
}
}
//监控键盘void KeyControl() {
//只有按键按下时才处理
if (_kbhit()) {
char key = _getch();//接收getch()函数的第一个返回值
char key2 = _getch();//接收getch()函数的第二个返回值，即真实键值
if (key == -32) {
switch (key2) {
case 72:
if (snake.dir != DOWN) {
snake.dir = UP;
printf("↑\n");
}
break;
case 75:
if (snake.dir != RIGHT) {
snake.dir = LEFT;
printf("←\n");
}
break;
case 77:
if (snake.dir != LEFT) {
snake.dir = RIGHT;
printf("→\n");
}
break;
case 80:
if (snake.dir != UP) {
snake.dir = DOWN;
printf("↓\n");
}
break;
}
}
}
}
//生成食物void CreateFood() { if (!food.flag) { food.x = rand() % (WIN_WIDTH / 10) * 10; food.y = rand() % (WIN_HEIGTH / 10) * 10; food.flag = true; }}//吃食物void EatFood() { if (food.flag && snake.coor.x == food.x && snake.coor.y == food.y) { food.flag = false; snake.num++; snake.score += 10; } CreateFood();}int main(){ //界面绘制 initgraph(WIN_WIDTH, WIN_HEIGTH);//初始化窗口 setbkcolor(RGB(207, 214, 229));//设置配景颜色 cleardevice();//刷新窗口 GemeInit(); while (1) { //绘制 GameDraw(); //移动 GameMove(); BeginBatchDraw();//双缓存机制，淘汰闪烁 //控制键盘 KeyControl; FlushBatchDraw();//刷新双缓冲区 EatFood(); Sleep(100); }}
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