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POXNA 4.0. Null reference exception
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  1. POXNA 4.0. Null reference exception
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    copied!<pre><code>**public GraphicsDeviceManager graphics; public SpriteBatch spriteBatch; private int[] Heights; //public Texture2D Terrain; public Texture2D[] TerrainList; public Color[] Colors_TerrainTexture; public int [] Coordinates_X; Camera camera = new Camera(); GraphicsDevice device; public MapFunctions() { } public void GenerateMap_Heights(int Map_Width,int Map_Height,float Relief,float Mountain_Peak_Height) { Heights = new int[Map_Width]; Random randomizer = new Random(); double rand1 = randomizer.NextDouble() + 1; double rand2 = randomizer.NextDouble() + 2; double rand3 = randomizer.NextDouble() + 3; float offset = Map_Height / 2; float peakheight = 324; float flatness = Mountain_Peak_Height; for (int x = 0; x &lt; Map_Width; x++) { double height = peakheight / rand1 * Math.Sin((float)x / flatness * rand1 + rand1); height += peakheight / rand2 * Math.Sin((float)x / flatness * rand2 + rand2); height += peakheight / rand3 * Math.Sin((float)x / flatness * rand3 + rand3); height += offset; Heights[x] = (int)height; } } public bool CanDraw = false; public void CreateTerrain(int Map_Width, int Map_Height,int TerrainTexture_Width,Color Color_Terrain,Color Color_Background) { int TimesToLoop = (Map_Width / TerrainTexture_Width) + 1; int[] Coordinates_X = new int[TimesToLoop]; device = graphics.GraphicsDevice; for (int b = 0; b &lt;= TimesToLoop; b++) { if (b == TimesToLoop) { Colors_TerrainTexture = new Color[Map_Width % TerrainTexture_Width * Map_Height]; TerrainTexture_Width = Map_Width % TerrainTexture_Width; } else { Colors_TerrainTexture = new Color[TerrainTexture_Width * Map_Height]; } Coordinates_X[b] = TerrainTexture_Width * b; for (int x = 0; x &lt; TerrainTexture_Width; x++) { for (int y = 0; y &lt; Map_Height; y++) { if (y &gt; Heights[x]) Colors_TerrainTexture[x + y * TerrainTexture_Width] = Color.Green; else Colors_TerrainTexture[x + y * TerrainTexture_Width] = Color.Transparent; } } Terrain = new Texture2D(device, TerrainTexture_Width, Map_Height, false, SurfaceFormat.Color); Terrain.SetData(Colors_TerrainTexture); TerrainList[b] = Terrain; //I get nullreference exception in this line } spriteBatch = new SpriteBatch(device); CanDraw = true; }** </code></pre> <p>TerrainList[b] = Terrain; (this line is almost in end of the code) I get null reference exception in this line. I call both functions (CreateTerrain and GenerateMap_Heights)from game1 LoadContent(). Please help, I can't find problem in my code.</p> <p>Sorry for my bad english.</p>
 

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