VC++跳跳乐小游戏

#include 
#include 
#include 

int main()
{
	float width, height, gravity;                           
	float ball_x, ball_y, ball_vy, radius;                  
	float rect_left_x, rect_top_y, rect_width, rect_height, rect_vx;
	int score = 0;                                          
	width = 600;                                            
	height = 400;							               
	gravity = 0.6;                                          
	initgraph(width, height);			                    

	radius = 20;                                            
	ball_x = width / 4;						                
	ball_y = height - radius;                               
	ball_vy = 0;                                            
	int isBallOnFloor = 1;                                  
	rect_height = 100;                                      
	rect_width = 20;
	rect_left_x = width * 3 / 4;                            
	rect_top_y = height - rect_height;                     
	rect_vx = -3;                                           
	while (1)
	{
		if (_kbhit())                                       
		{
			char input = _getch();                          
			if (input == ' ' && isBallOnFloor == 1)         
			{
				ball_vy = -18;                             
				isBallOnFloor = 0;                         
			}
		}

		ball_vy += gravity;                  
		ball_y += ball_vy;					 
		if (ball_y >= height - radius)       
		{
			ball_vy = 0;                     
			ball_y = height - radius;        
			isBallOnFloor = 1;               
		}

		rect_left_x = rect_left_x + rect_vx; 
		if (rect_left_x <= 0)                
		{
			rect_left_x = width;             
			score++;                         
			rect_height = rand() % int(height / 4) + height / 4;  
			rect_vx = rand() / float(RAND_MAX) * 4 - 7;           
		}

		if ((rect_left_x <= ball_x + radius)
			&& (rect_left_x + rect_width >= ball_x - radius)
			&& (height - rect_height <= ball_y + radius))         
		{
			Sleep(2000);
			rect_left_x = width;
			score = 0;                       
		}

		cleardevice();                       
		fillcircle(ball_x, ball_y, radius);  
		fillrectangle(rect_left_x, height - rect_height, rect_left_x + rect_width, height); 
		TCHAR s[20];                       
		swprintf_s(s, _T("%d"), score);       
		settextstyle(40, 0, _T("宋体"));        
		outtextxy(100, 30, s);
		Sleep(10);
	}
	closegraph();
	return 0;
}