I'm attemptin to add multiple levels to my pong game. I'd like to simply exchange a few elements with each level, nothing
crazy. Just
the background texture,
the color of
the AI paddle (the one on
the right side), and
the music.
It seems that
the best way to go about this is by utilizing
the StreamReader to read and write
the files from XML. If there is a better, or more efficient alternative way then I'm all for it. In looking over
the XNA Starter Platformer Kit provided by MS it seems that they've done it in this manner as well. I'm perplexed by a few things, however, namely parts within
the Level class which aren't commented.
/// <summary>
/// Iterates over every tile in
the structure file and loads its
/// appearance and behavior. This method also validates that
the
/// file is well-formed with a player start point, exit, etc.
/// </summary>
/// <param name="fileStream">
/// A stream containing
the tile data.
/// </param>
private void LoadTiles(Stream fileStream)
{
// Load
the level and ensure all of
the lines are
the same length.
int width;
List<string> lines = new List<string>();
using (StreamReader reader = new StreamReader(fileStream))
{
string line = reader.ReadLine();
width = line.Length;
while (line != null)
{
lines.Add(line);
if (line.Length != width)
throw new Exception(String.Format("
The length of line {0} is different from all preceeding lines.", lines.Count));
line = reader.ReadLine();
}
}
What does width = line.Length mean exactly? I mean I know how it reads
the line, but what difference does it make if one line is longer than any of
the others?
Finally, their levels are simply text files that look like this:
....................
....................
....................
....................
....................
....................
....................
.........GGG........
.........###........
....................
....GGG.......GGG...
....###.......###...
....................
.1................X.
####################
It can't be that easy..... Can it?
