#include <graphics.h>
#include <conio.h>
#include <stdlib.h>
#define START_X 100
#define START_Y 400
void draw(int x, int y) /*自定义函数draw画出火箭外形*/
{
setcolor(14);
setfillstyle(1, 15);
rectangle(x, y, x + 30, y + 60);
floodfill(x + 10, y + 10, 14);
setfillstyle(1, RED);
line(x + 15, y - 15, x, y);
line(x + 15, y - 15, x + 30, y);
floodfill(x + 15, y - 5, 14);
setfillstyle(2, RED);
line(x - 20, y + 80, x, y + 60);
line(x + 50, y + 80, x + 30, y + 60);
line(x - 20, y + 80, x + 50, y + 80);
floodfill(x + 10, y + 70, 14);
line(x, y + 90, x - 10, y + 100);
setcolor(RED);
line(x + 10, y + 90, x, y + 100);
line(x + 20, y + 90, x + 30, y + 100);
setcolor(14);
line(x + 30, y + 90, x + 40, y + 100);
}
void play() /*自定义火箭发射函数*/
{
int x, y;
int s = 4;
for (x = START_X, y = START_Y; y >= 15; y -= s)
{
cleardevice(); /*清屏*/
draw(x, y); /*画火箭*/
delay(1e20); /*延迟时间*/
}
outtextxy(200, 100, "The demo is over !"); /*在屏幕指定位置输出字符串*/
}
main()
{
char ch;
int x = START_X, y = START_Y;
int gdriver = DETECT;
int gmode;
initgraph(&gdriver, &gmode, ""); /*图形方式初始化*/
setbkcolor(BLACK); /*设置背景颜色为黑色*/
cleardevice(); /*清屏*/
setcolor(WHITE); /*设置绘图颜色为白色*/
settextstyle(TRIPLEX_FONT, 0, 2); /*设置输出的文本形式*/
outtextxy(200, 100, "Press any key to begin!"); /*在指定位置输出字符串*/
draw(x, y); /*调用画火箭函数*/
getch();
play(); /*调用自定义的play（）函数*/
getch();
closegraph(); /*退出图形状态*/
}
