EasyX之跳跳球

EasyX之跳跳球

EasyX之跳跳球

1. 实现绘制小球和矩形到固定位置
2. 让矩形向左移动
3. 使小球实现起跳与下落
4. 解决小球二次起跳问题
5. 判断小球起跳的过程中是否碰到矩形的左边,上边,以及右边,若碰到,游戏结束,分数清零
6. 分数的打印

#define _CRT_SECURE_NO_WARNINGS
#include<graphics.h>    //图形库头文件
#include<cstdio>
#include<conio.h>
#include<time.h>
#define WIDTH 800
#define HEIGHT 400//打印分数
void printScore(int score)
{char buffer[20];    //注意使用项目属性为多字节字符集sprintf(buffer, "分数: %d ", score);settextcolor(RED);              //设置字体颜色settextstyle(40, 0, "宋体");   //设置字体大小以及风格outtextxy(50, 50, buffer);      //输出字体
}
int main()
{srand((unsigned int)time(NULL));   //随机数种子initgraph(WIDTH, HEIGHT);         //创建窗口setbkcolor(WHITE);                //设置窗口背景色cleardevice();                   //清屏setfillcolor(RED);                //给小球和方块一个初始填充颜色//初始化小球数据int radius = 10;int ball_x = WIDTH / 4;int ball_y = HEIGHT - radius;int ball_vy = 0;                  //y方向速度int ball_a = 14;                  //小球加速度//初始化矩形数据int rec_width = 20;int rec_height = 100;int rec_left_topx = 3*WIDTH/4;int rec_left_topy = HEIGHT- rec_height;int rec_vx = -20;                //矩形X方向速度int score = 0;                //分数bool flag = false;           //判断小球是否能起跳标志char userKey = '';         //用户按键输入变量接收while (1){BeginBatchDraw();   //双缓冲绘图//如果矩形跑到最左边然后重新生成一个矩形if ((rec_left_topx + rec_width) <= 0){score+=10;rec_width = rand() % 21 + 10;rec_height = rand() % 81 + 80;rec_left_topx = WIDTH;rec_left_topy = HEIGHT - rec_height;rec_vx = rand() % 5 + (-40);setfillcolor(RGB(rand() % 255, rand() % 255, rand() % 255));}if (_kbhit())        //判断是否有按键按下{char userKey = _getch();if (userKey == ' ' && flag == true)  //小球在地上并且用户输入为空格{flag = false; ball_vy = -80;            //给小球一个向上的速度}}ball_vy = ball_vy + ball_a;      //赋予加速度ball_y = ball_y + ball_vy;       //小球起跳//小球落地if (ball_y >= HEIGHT - radius){flag = true;ball_vy = 0;                      //将速度置为0ball_y = HEIGHT - radius;        //防止小球落到地上}rec_left_topx = rec_left_topx + rec_vx;             //设置矩形速度//设置游戏结束标志if ((ball_x + radius >= rec_left_topx) &&            //小球在矩形左边(ball_y + radius >= HEIGHT - rec_height) &&      //小球在矩形上边(ball_x - radius <= rec_left_topx + rec_width))  //小球在矩形右边{score = 0;Sleep(100);MessageBox(GetHWnd(), "You die,Now B!", "游戏结束", MB_OK);  //告知玩家游戏结束}cleardevice();//绘制小球fillcircle(ball_x, ball_y, radius);//绘制矩形fillrectangle(rec_left_topx, rec_left_topy,rec_left_topx + rec_width, rec_left_topy + rec_height);//打印分数printScore(score);Sleep(100);EndBatchDraw();}closegraph();system("pause");return 0;
}