var __tiles;
function tile_get_ids() //gml_Script_tile_get_ids
{
    __tiles[0] = -1
    var __currtile = 0
    var __layers = layer_get_all()
    var __numlayers = array_length_1d(__layers)
    for (var __i = 0; __i < __numlayers; __i++)
    {
        var __els = layer_get_all_elements(__layers[__i])
        var __numels = array_length_1d(__els)
        for (var __j = 0; __j < __numels; __j++)
        {
            var __eltype = layer_get_element_type(__els[__j])
            if (__eltype == 7)
            {
                __tiles[__currtile] = __els[__j]
                __currtile++
            }
        }
    }
    return __tiles;
}