C# 클래스 MrGravity.LevelSelect

Checks if a save file for the game already exists - and loads it if so. Meant to be used solely on XBOX360. Should be used as soon as we know what PlayerIndex the "gamer" is using (IE right after the title screen). Note: if a save game does not exist the constructor for this class should have filled in the default values (0 stars, all but the first locked - on xbox our default xml file should always have the default values - we cannot save information to that file as it is a binary xnb file that can't be changed at run time) Do not call this until we know the PlayerIndex the player is using!

Draws the menu on the screen

Gets the next level in the game

Constructs the menu screen that allows the player to select a level

Load the data that is needed to show the Level selection screen

Resets all levels to be locked (except the first level) and resets all scores to 0 This should be changed a bit for our new world structure. Perhaps on xbox360 we can simply just reload the default xml file here (which is guaranteed to have default values within it if including it in the project in the proper state), and then save the game so the storage container contains the reset values as well. Additionally... I am not sure why this returns a level....

Saves level unlock and scoring information PC saving is straightforward - but xDoc.Save() will not work on xbox360. Instead we use the built in XmlSerializer class to serialize an element out to an xml file. We build our Xelement like normal - but instead of saving that directly using XDocument.Save() we place this XElement into a struct, and use XmlSerializer to serialize the data out into a storage device on the xbox.

Unlocks the next level in the game(if it is already unlocked than it won't do anything)

Handle any changes while on the level selection menu

Handle what happens when the player presses A for all options

Handle actions for each direction the player may press on their controller