Generating grid pattern 2d

Question

I generated a grid, the row starts at bottom left to right and continues to generate as 5*5 grid. But i need a little help in generating grid where pattern should be as, start row at bottom left to right, right to left. Here is the link to visual, https://dl.dropboxusercontent.com/u/102812893/grid.png How to generate this pattern. Here is my code.

 void drawGrid() 
 {
     Vector3 offset = new Vector3(-col / 2.0f + 0.5f, -row / 2.0f + 0.5f, 0.0f); //(-2, -2)
     gameObj = new GameObject[row, col];

     int a = 1, b = 0;

     for(int i = 0; i < row; i++)
     {
         for(int j = 0; j < col; j++)
         {
             gameObj[i, j] = tile;
             b = a++;
             gameObj[i, j].name = b.ToString();
             Vector3 pos = new Vector3(j*0.905f, i*0.905f, 0f) + offset;
             boardPositions.Add(pos);
             //sr.WriteLine(i + "," + j + "=" +pos);
             Instantiate(gameObj[i, j], pos, Quaternion.identity);
         }
     }
 }

Answer 1

Best Answer

Answer by Socapex · Oct 26, 2015 at 07:28 PM

1 option) You could store your j ints in a List, and after iterating on them, reverseSort or Sort the list. This would probably require a bool that you set as bool = !bool to know which sorting you want (ascending or descending). With this in mind...

2) You could initiate 2 arrays of j ints, one ascending the other descending, use a bool to switch which one you loop on. This way, you don't apply a sorting algorithm (which is slow) every loop, but only once at the beginning.

Hope this helps.

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kurukshetran · Oct 26, 2015 at 07:56 PM 0

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Actually i tried to solve. Here is the code. But the output is different, where start from bottom left to right, row 0, row 2, row4 is generated correctly. But row 1, row3 adds extra one gameobject. Here is the visual image. link text

Here is the code.

     void generateBoard()
 {
     Vector3 offset = new Vector3(-col / 2.0f + 0.5f, -row / 2.0f + 0.5f, 0.0f); //(-2, -2)
     gameObj = new GameObject[row, col];
     int a = 1, b = 0, c = 0;
     int $$anonymous$$AX = row * col;

     for(int i = 0; i < row; i++)
     {
         if(i % 2 == 0)
         {
             for (int j = 0; j < $$anonymous$$AX / row; j++) 
             {
                 boardTile.Add (tile);
                 c = a++;
                 boardTile[b].name = c.ToString();
                 Vector3 pos = new Vector3(j*0.905f, i*0.905f, 0f) + offset;
                 boardPositions.Add(pos);
                 Instantiate(boardTile[b], pos, Quaternion.identity);
                 b++;
             }
         }
         else
         {
             for (int j = $$anonymous$$AX / row; j >= 0; j--)
             {
                 boardTile.Add (tile);
                 c = a++;
                 boardTile[b].name = c.ToString();
                 Vector3 pos = new Vector3(j*0.905f, i*0.905f, 0f) + offset;
                 boardPositions.Add(pos);
                 Instantiate(boardTile[b], pos, Quaternion.identity);
                 b++;
             }
         }
     }
 }

Socapex kurukshetran · Oct 26, 2015 at 08:04 PM 0

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j >= 0?

;)

Generating grid pattern 2d

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