#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>
#include <unistd.h>

int high, width;
int bird_x, bird_y;
int bar1_y,bar1_xDown,bar1_xTop;
int score;

void gotoxy (int x, int y)
{
	HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
	COORD pos;
	pos.X = x;
	pos.Y = y;
	SetConsoleCursorPosition(handle ,pos); 
}

void startup()
{
	high = 20;
	width = 50;
	bird_x = high / 2;
	bird_y = 3;
	bar1_y = width / 2;
	bar1_xDown = high / 3;
	bar1_xTop = high / 2;
	score = 0;
	
}

void show ()
{
	gotoxy(0,0);
	int i, j;
    
    for(i = 0; i < high; i++)
    {
    	for(j = 0; j < width; j++)
    	{
    		if((i == bird_x) && (j == bird_y))
    			printf("@");
    		else if((j == bar1_y) && ((i < bar1_xDown) || (i > bar1_xTop)))
    			printf("*");
    		else 
    			printf(" ");
		}
		printf("\n");
	}
	printf("÷: %d",score);
}

void updateWithoutInput()
{
	bird_x++;
	bar1_y--;
	if(bird_y == bar1_y)
	{
		if((bird_x >= bar1_xDown) && (bird_x <= bar1_xTop))
			score++;
		else
		{
			printf("Ϸʧ\n");
			system("pause");
			exit(0);
		}
	}
	usleep(150000);
}

void updateWithInput()
{
	char input;
	if(kbhit())
	{
		input = getch();
		if(input == ' ')
			bird_x = bird_x - 2;
	}
}

int main ()
{
	startup();
	while(1)
	{
		show ();
		updateWithoutInput ();
		updateWithInput ();
	}
	return 0;
}