//Destroy the road and initially generate 10 pieces at the beginning
public void Reset()
{
Segments.Clear();
for (int i = 0; i < 10; i++)
{
var piece = new RoadSegment(content, world, Size * (i - 1), Highlight);
Segments.AddLast(piece);
}
}
public void Update(GameTime gameTime, float playerY)
{
//Destroy road segments which the player has passed,
//and create a new one far ahead of the player
if (playerY - Segments.First.Value.Y > Size * 2)
{
Segments.First.Value.Destroy();
Segments.RemoveFirst();
var piece = new RoadSegment(content, world, Segments.Last.Value.Y + Size, Highlight);
Segments.AddLast(piece);
}
//Change the highlated lane
double d = gameTime.TotalGameTime.TotalSeconds - HighlightChangeTime;
if (d > highlightChangeInterval)
{
HighlightChangeTime = gameTime.TotalGameTime.TotalSeconds;
Highlight = new Random().Next(4);
}
}