I've recently bought Tidy Tilemapper, and I am now trying to create a procedural tile world with it. All I want is to remove any tiles too far away to be useful, and only show those close to my character. For testing purposes I have been using arbitrary numbers...

What I do (or am trying to do) is create a radius where I check all tiles within. I then have a smaller radius within that, and I remove everything there's outside the small radius, and inside the big radius. This way I avoid accessing the rest of the map, outside the big radius. Everything inside the small radius should be drawn to the screen. At the moment my map is pretty simple, if the value in the 2 dimensional array is 1, it should draw something.

When I launch the Scene I make the player a child of the Blockmap that is created. I then compare localPosition values to the position of the blocks. I think this is here my problem starts - Everything tile(block) that is created, are created towards the negative direction of Worldspace (and local space). I've messed around a lot with the following code on that account (I've burned out my brain :P). I'm spawning my player at X=0, and Y = half the height of the map. While I fall down to the map, if I move out in the positive direction on the X-axis (off the map) it will actually remove some of the tiles that it is supposed to. But it does not redraw any of them. If I move around on the world that is created for testing purposes, it does not remove anything in the "large radius", and doesn't create anything either.

I've taken the Perlin and level generation examples that are included in Tidy Tile Mapper, and modified them.

First off the Start and update methods, just so you can see the order of things. ConstructInitialWorld method prepares the Block Map, and creates the int array containing the map via the GetLevelMap method.

// Use this for initialization
    void Start () 
    {
       ConstructInitialWorld();
    }

    void Update()
    {
       DrawMap();
    }

    //We'll construct the map here
    private void ConstructInitialWorld()
    {
       map = GetLevelMap(levelWidth, levelHeight);

       //We'll go ahead and create our map now
       createdMap = BlockUtilities.CreateBlockMap(mapName,tileSize,chunkWidth,chunkHeight,BlockMap.GrowthAxis.Up);
       SpawnPlayer(new Vector2(0, levelHeight / 2)); 

       //And now we refresh our map
       BlockUtilities.RefreshMap(createdMap,randomiseInitialMap);    
    }
public int[,] GetLevelMap (int levelWidth, int levelHeight)
    {
       map = new int[levelWidth,levelHeight];

       //We will randomise the y value that we pass to the perlin function
       //This will result in a random level everytime
       float yOffset = UnityEngine.Random.value;

       for(int x =0; x < levelWidth; x++){

         //We'll get our perlin noise value -
         //normalizing our x to pass it as a parameter
         float p = Mathf.PerlinNoise((float)x/(float)levelHeight,yOffset);

         //Given this value, we'll get our height cap
         //And set it to allow for an empty column at the top, and 
         //assure it doesn't leave gaps in the bottom
         int ny = (int)(p * (float)levelHeight-2)+1;

         //Given this, we'll set all values below this number to be 'true'
         for(int y = ny; y < levelHeight; y++)
         {
          map[x,y] = 1;
         }
       }
       return map;
    }

My guess is the problem is in the following code:

private void DrawMap()
    {
       //Sets an arbitrary radius to "scan" around the player.
       for(int x = (int)pc.transform.localPosition.x - 30; x < pc.transform.localPosition.x + 30; x++)
         for(int y = (int)pc.transform.localPosition.y - 30; y < pc.transform.localPosition.y + 30; y++)
         {
          if(x < pc.transform.localPosition.x - 10 || x > pc.transform.localPosition.x + 10 || y < pc.transform.localPosition.y - 10 || y > pc.transform.localPosition.y + 10)
                 BlockUtilities.RemoveBlockFromMap(createdMap, x, y, 0, false,true);

          if(+x > map.GetLength(0) || +x < 0 || +y > map.GetLength(1) || +y < 0)
              break;
          if(map[+x,+y] == 1)
          {
              Debug.Log("If succeeded");
              Block b = GameObject.Instantiate(blockPrefab) as Block;

              BlockUtilities.AddBlockToMap(createdMap,b,true,0,false,+x,+y,0, true, false);
          }
          else if(useEmptyBlocks)
                 BlockUtilities.AddBlockToMap(createdMap,null,true,0,false,+x,+y,0,true,true);
         }
    }

I know this is a heavy read, and thanks for reading it- But I really hope someone has an idea or can actually see what I am doing wrong.

Here's a link to a little documentation for Tidy TileMapper http://tools.dopplerinteractive.com/