/*
项目内容：贪吃蛇
开发环境：vs2013+easyx
*/
这个项目是一个小游戏—贪吃蛇项目，代码如下
#include<stdio.h>
#include<conio.h>
//包含easyx图形库，可以使用给我们提供的一些函数，绘图，贴图
#include<graphics.h>
#define WIN_WIDTH 640
#define WIN_HEIGHT 480
#define MAX_SNAKE 500 //蛇的最大节数
//枚举
enum DIR //枚举蛇的方向
{
UP,
DOWN,
LEFT,
RIGHT,
};
struct Food //食物
{
int x;
int y;
DWORD color;
bool flag;//是否被吃掉，是否要重新生成食物
}food;
struct Pos
{
int x;
int y;
DWORD color;
};
struct Snake//蛇的结构体
{
int num;//当前节数
int dir;//蛇的方向
int score;//分数
int size;//蛇的宽和高
int speed;//蛇的移动速度
//表示每一节蛇的坐标 数组
struct Pos coor[MAX_SNAKE];
}snake;
void GameInit()
{
//设置随机数种子
srand(GetTickCount());
snake.num = 3;
snake.dir = RIGHT;
snake.score = 0;
snake.size = 10;
snake.speed = 10;
snake.coor[2].x = 0;
snake.coor[2].y = 0;
snake.coor[2].color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
snake.coor[1].x = 10;
snake.coor[1].y = 0;
snake.coor[1].color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
snake.coor[0].x = 20;
snake.coor[0].y = 0;
snake.coor[0].color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
//初始化食物
food.x = rand() % (WIN_WIDTH/10)*10;//1*10 10 20 30 40 50 60
food.y = rand() % (WIN_HEIGHT/10)*10;
food.color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
food.flag = true;
}
void GameDraw()
{
cleardevice();
for (int i = 0; i < snake.num; i++)
{
//设置填充颜色
setfillcolor(snake.coor[i].color);
//画矩形
fillrectangle(snake.coor[i].x, snake.coor[i].y, snake.coor[i].x + 10, snake.coor[i].y + 10);
}
//绘制食物
//solidcircle(food.x,food.y,5)
if (food.flag)
{
setfillcolor(food.color);
solidellipse(food.x, food.y, food.x + 10, food.y + 10);
}
//绘制分数
//先把整数转成字符串
char temp[20] = " ";
sprintf(temp, "分数：%d", snake.score);
outtextxy(10,10,temp);//如果报错 “outtextxy”: 2 个重载中没有一个可以转换所有参数类型 一定是字符集问题
/*怎么修改字符集呢？三种方法
*/
}
void GameMove()
{
for (int i = snake.num-1; i >0; i--)
{
snake.coor[i].x = snake.coor[i - 1].x;
snake.coor[i].y = snake.coor[i - 1].y;
}
switch(snake.dir)
{
case UP:
snake.coor[0].y -= snake.speed;
if (snake.coor[0].y < 0)
{
snake.coor[0].y = WIN_HEIGHT;
}
break;
case DOWN:
snake.coor[0].y += snake.speed;
if (snake.coor[0].y > WIN_HEIGHT)
{
snake.coor[0].y = 0;
}
break;
case LEFT:
snake.coor[0].x -= snake.speed;
if (snake.coor[0].x < 0)
{
snake.coor[0].x = WIN_WIDTH;
}
break;
case RIGHT:
snake.coor[0].x += snake.speed;
if (snake.coor[0].x > WIN_WIDTH)
{
snake.coor[0].x = 0;
}
break;
}
}
void GameControl()
{
//获取键盘输入，_getch(); 不回显函数，
char key = _getch();
switch (key)
{
case 72:
if (snake.dir!=DOWN)
{
snake.dir = UP;
}
break;
case 80:
if (snake.dir != UP)
{
snake.dir = DOWN;
}
break;
case 75:
if (snake.dir != RIGHT)
{
snake.dir = LEFT;
}
break;
case 77:
if (snake.dir != LEFT)
{
snake.dir = RIGHT;
}
break;
}
printf("%d\n", key);
}
void CreateFood()
{
if (!food.flag)
{
food.x = rand() % (WIN_WIDTH / 10) * 10;//1*10 10 20 30 40 50 60
food.y = rand() % (WIN_HEIGHT / 10) * 10;
food.color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
food.flag = true;
}
}
void EatFood()
{
if (food.flag && snake.coor[0].x == food.x && snake.coor[0].y == food.y)
{
food.flag = false;
snake.num++;
snake.score += 10;
snake.coor[snake.num-1].color = RGB(rand() % 256, rand() % 256, rand() % 256);//随机生成三个数，用三原色表示颜色
CreateFood();
}
}
int main()
{
//1，创建窗口，init初始化 graphics 图形窗口
initgraph(WIN_WIDTH, WIN_HEIGHT, SHOWCONSOLE);
setbkcolor(RGB(207, 214, 229));//设置颜色
cleardevice();//刷新窗口
GameInit();
while (1)
{
GameDraw();
GameMove();
if (_kbhit())
{
GameControl();
}
EatFood();
Sleep(100);
}
getchar();
return 0;
}
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