Hur man använder klassen

Exempel_På_Level01.xml

<?xml version="1.0" encoding="utf-8" ?>
<XnaContent>
  <Asset Type="Breakout.Level">
    <LevelIndex>1</LevelIndex>
    <Rows>13</Rows>
    <Columns>13</Columns>
    <NextLevelAsset>Content/Levels/Level02</NextLevelAsset>
    <StartLevel>true</StartLevel>
    <MaxHits>9</MaxHits>
    <Blocks>
      <Row>1 0 0 0 0 0 0 0 0 0 0 0 1</Row>
      <Row>0 1 0 0 0 0 0 0 0 0 0 1 0</Row>
      <Row>0 0 1 0 0 0 0 0 0 0 1 0 0</Row>
      <Row>0 0 0 1 0 0 0 0 0 1 0 0 0</Row>
      <Row>0 0 0 0 1 0 0 0 1 0 0 0 0</Row>
      <Row>0 0 0 0 0 1 0 1 0 0 0 0 0</Row>
      <Row>0 0 0 0 0 0 1 0 0 0 0 0 0</Row>
      <Row>0 0 0 0 0 1 0 1 0 0 0 0 0</Row>
      <Row>0 0 0 0 1 0 0 0 1 0 0 0 0</Row>
      <Row>0 0 0 1 0 0 0 0 0 1 0 0 0</Row>
      <Row>0 0 1 0 0 0 0 0 0 0 1 0 0</Row>
      <Row>0 1 0 0 0 0 0 0 0 0 0 1 0</Row>
      <Row>1 0 0 0 0 0 0 0 0 0 0 0 1</Row>
    </Blocks>
  </Asset>
</XnaContent>

GameManager.cs

ContentManager localManager;
Level currentLevel;
List<Level> levels;

// ... 

protected override void LoadContent()
{
    // ...
    levelManager = new LevelManager(@"Content/Levels/Level01", contentManager);
    currentLevel = levelManager.CurrentLevel;

    SpawnLevel(currentLevel);
    // ...
    base.LoadContent();
}

Level.cs

// Den här klassen ligger i ett separata Windows Game Library-projekt.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Content;

namespace Breakout
{
    public class Level
    {
        public Level()
        {
            //SetUp();
        }

        public void SetUp()
        {
            for (int y = 0; y < Rows; y++)
            {
                for (int x = 0; x < Columns; x++)
                {
                    if (Blocks[y][x] > 0)
                        BlocksLeft = ++TotalBlocks;
                }
            }
        }
        // Level 1 = 0, Level 2 = 1, ..., Level N = N - 1
        public int LevelIndex;

        // Row count
        public int Rows;

        // Column count
        public int Columns;

        // The next level
        [ContentSerializer(Optional = true)]
        public string NextLevelAsset;

        // True if it's the first level
        [ContentSerializer(Optional = true)]
        public bool StartLevel = false;

        // True if it's the last level
        [ContentSerializer(Optional = true)]
        public bool LastLevel = false;

        // The total amount of blocks that exist in this level
        [ContentSerializerIgnore]
        public int TotalBlocks = 0;

        // The amount of blocks that are left in this level
        [ContentSerializerIgnore]
        public int BlocksLeft = 0;

        public int MaxHits = 9;

        // List with all the blocks!
        [ContentSerializer(CollectionItemName = "Row")]
        public List<List<int>> Blocks;
    }
}

LevelManager.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;

namespace Breakout
{
    public class LevelManager
    {
        private int currentLevelIndex = 0;
        private ContentManager contentManager;
        public List<Level> Levels;
        public int LevelCount = 0;

        public LevelManager(string firstLevelAsset, ContentManager contentManager)
        {
            this.contentManager = contentManager;
            Levels = LoadAllLevels(firstLevelAsset);
            CurrentLevelIndex = 0;
            LevelCount = Levels.Count;
        }

        private List<Level> LoadAllLevels(string firstLevelAsset)
        {
            List<Level> levels = new List<Level>();

            Level nextLevelData = contentManager.Load<Level>(firstLevelAsset);
            nextLevelData.SetUp();
            levels.Add(nextLevelData);
            while (!String.IsNullOrEmpty(nextLevelData.NextLevelAsset))
            {
                nextLevelData = contentManager.Load<Level>(nextLevelData.NextLevelAsset);
                nextLevelData.SetUp();
                levels.Add(nextLevelData);
            }
            return levels;
        }

        public Level CurrentLevel
        {
            get { return Levels[CurrentLevelIndex]; }
        }

        private int CurrentLevelIndex
        {
            get
            {
                return currentLevelIndex;
            }
            set
            {
            	currentLevelIndex = value;
            }
        }

        public Level NextLevel()
        {
            if (CurrentLevel.LastLevel)
            {
                return null;
            }
            else
            {
                CurrentLevelIndex++;
                return CurrentLevel;
            }
        }

    }
}