Jumper Draw Grid

drawGrid.lua

-- draw a tile map to the screen
-- populate the map table
function drawGrid()
   for row = 1, 10 do
      local gridRow = {}
      for col = 1, 10 do
         -- draw a tile
         local tile = display.newRect((col * 50) - 25, (row * 50) - 25, 48, 48)
         
         -- make some tiles un-walkable
         if ((row == 4 or row == 6) and (col >2 and col < 9))  then
            tile.alpha = 1
            gridRow[col] = 1    
         else
            tile.alpha = .5
            gridRow[col] = 0
         end
         
         -- set the tile's pixel coordinates
         tile.xyPixelCoordinate = {x=tile.x, y=tile.y}
         -- set the tile's grid coordinates
         tile.xyGridCoordinate = {x=col, y=row}
        

         -- draw the start position
         if(row  == 3 and col == 4) then d
            rawStart(tile.xyPixelCoordinate, tile.xyGridCoordinate)
         end

         -- draw the end position
         if(row  == 5 and col == 6) then d
            rawEnd(tile.xyPixelCoordinate, tile.xyGridCoordinate)
         end
         
      end
      -- add gridRow table to the map table
      map[row] = gridRow
   end
end