C# BİLEN BİRİ BU KODLARI TEK TEK AÇIKLAYABİLİR Mİ LÜTFEN???

public partial class Form1 : Form
{
int boruHızı = 8;
int gravity = 10;
int skor = 0;

public Form1()
{
InitializeComponent();
}

private void gameTimerEvent(object sender, EventArgs e)
{
bird.Top += gravity;
boruAlt.Left -= boruHızı;
boruUst.Left -= boruHızı;
scoreText.Text = "Skor " + skor;
if(boruAlt.Left<-150)
{
boruAlt.Left = 800;
skor++;
}
if(boruUst.Left < -180)
{
boruUst.Left = 950;
skor++;
}
if(bird.Bounds.IntersectsWith(boruAlt.Bounds)||bird.Bounds.IntersectsWith(boruUst.Bounds)||bird.Bounds.IntersectsWith(zemin.Bounds))
{
endGame();
}
if(skor>15)
{
boruHızı = 13;
}
if(bird.Top<-25)
{
endGame();
}

}

private void gamekeyisdown(object sender, KeyEventArgs e)
{
if(e.KeyCode==Keys.Space)
{
gravity = -10;
}
}

private void gamekeyisup(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Space)