Creates a new tilemap layer with one tile per grid cell

New Tilemap.lua

local spr = app.activeSprite
if not spr then
  return app.alert "You need to create a sprite first"
end
app.transaction(
  function()
    app.command.NewLayer{ name="Tilemap", tilemap=true }
    local grid = spr.gridBounds
    for y=grid.y,spr.height,grid.width do
      for x=grid.x,spr.width,grid.width do
        app.useTool{
          tool='pencil',
          brush=Brush(1),
          color=Color{ index=1 },
          tilemapMode=TilemapMode.PIXELS,
          tilesetMode=TilesetMode.STACK,
          points={ Point(x, y) }}
        app.useTool{
          tool='pencil',
          brush=Brush(1),
          color=spr.transparentColor,
          tilemapMode=TilemapMode.PIXELS,
          tilesetMode=TilesetMode.MANUAL,
          points={ Point(x, y) }}
      end
    end
  end)