Flying Bird using Computer graphics in C/C++

In computer graphic, C++ provide graphic.h through which objects can be created and by using this objects flying bird can be created in C++ program.

Functions used in this program are as follows:

• line(): The line function is used to draw a line. 
  Syntax:

line(x1, y1, x2, y2);
where, (x1, y1) (x2, y2) are end points of the line. 

• arc(): The arc function is used to draw an arc. 
  Syntax:

arc(x, y, start_angle, end_angle, r);
where, (x, y) are centre of the arc, start_angle is the starting angle, end_angle is the ending angle and r is the radius of angle.

• circle(): The circle function is used to draw a circle. 
  Syntax:

circle(x, y, r);
where, (x, y) is the centre points and r is the radius of the circle.

• delay(): The delay function is used to stop the screen for a certain time as the execution of program is very fast. 
  Syntax:

delay(n);
where, n is number of seconds you want to stop the screen.

• cleardevice(): The cleardevice function is used to clear the screen.
• closegraph(): The closegraph function is used to close the graph.

Below is the C++ program implementing flying bird using graphics.h:

C++

// C++ program implementing flying bird using graphics.h

#include <conio.h>
#include <dos.h>
#include <graphics.h>
#include <iostream.h>

// Wings
void handDown(int i)
{
    line(85 + i, 155, 45 + i, 185);
    line(85 + i, 155, 115 + i, 195);
    arc(90 + i, 130, 228, 292, 70);
}

void handUp(int i)
{
    line(85 + i, 155, 125 + i, 115);
    line(85 + i, 155, 55 + i, 118);
    arc(90 + i, 177, 60, 122, 70);
}

// Driver code
void main()
{
    int gd = DETECT, gm;

    // Path of the BGI folder
    initgraph(&gd, &gm, "C:\\TURBOC3\\BGI");
    int i = 0;

    for (i = 0; i < 400; i++) {
        // Body
        circle(150 + i, 150, 20);
        arc(90 + i, 190, 50, 145, 60);
        arc(87 + i, 117, 220, 320, 60);

        // Beak
        line(170 + i, 147, 180 + i, 153);
        line(180 + i, 153, 170 + i, 156);

        // Eye
        circle(162 + i, 150, 2);

        // Tail
        line(10 + i, 155, 40 + i, 155);
        line(10 + i, 145, 40 + i, 155);
        line(10 + i, 165, 40 + i, 155);

        // Move hands
        if (i % 2 == 0)
            handUp(i);
        else
            handDown(i);

        // Stop the screen for 10 secs
        delay(10);

        // Clear the screen
    }
    cleardevice();

    getch();

    // Close the graph
    closegraph();
}

Output: