private void GameScreen_KeyDown(object sender, KeyEventArgs e)
{
bool? correct = null; // (datatype)? specifies a version of that datatype that can have the value null
string key = e.KeyData.ToString();
if (key == "Escape")
{
this.Close();
}
if (!CoverLabel1.Visible)
{
switch (key)
{
case "A": correct = Q1.CheckAnswer(LeftAnswer1.Text); break;
case "D": correct = Q1.CheckAnswer(RightAnswer1.Text); break;
case "W": correct = Q1.CheckAnswer(UpAnswer1.Text); break;
case "S": correct = Q1.CheckAnswer(DownAnswer1.Text); break;
}
if (correct != null)
{
if (correct == true)
{
CoverLabel1.Text = GoodText[r.Next(0, 6)];
CoverLabel1.ForeColor = Color.Green;
car1.X += 2;
car1.Speed = 4;
}
else
{
CoverLabel1.Text = BadText[r.Next(0, 6)];
CoverLabel1.ForeColor = Color.Red;
car1.X += 1;
car1.Speed = 1;
if (_sfx)
{
SystemSounds.Hand.Play();
}
}
CoverLabel1.Show();
questionTimer1.Stop();
TPQList1.Add(questionTimer1.Elapsed.TotalSeconds);
return;
}
}
if (!CoverLabel2.Visible)
{
switch (key)
{
case "Left": correct = Q2.CheckAnswer(LeftAnswer2.Text); break;
case "Right": correct = Q2.CheckAnswer(RightAnswer2.Text); break;
case "Up": correct = Q2.CheckAnswer(UpAnswer2.Text); break;
case "Down": correct = Q2.CheckAnswer(DownAnswer2.Text); break;
}
if (correct != null)
{
if (correct == true)
{
CoverLabel2.Text = GoodText[r.Next(0, 6)];
CoverLabel2.ForeColor = Color.Green;
car2.X += 2;
car2.Speed = 4;
}
else
{
CoverLabel2.Text = BadText[r.Next(0, 6)];
CoverLabel2.ForeColor = Color.Red;
car2.X += 1;
car2.Speed = 1;
if (_sfx)
{
SystemSounds.Hand.Play();
}
}
CoverLabel2.Show();
questionTimer2.Stop();
TPQList2.Add(questionTimer2.Elapsed.TotalSeconds);
return;
}
}
}
