Entity.EntIndex

 
function GetSpawnpoints()
    -- First create the table we're storing the player entities in.
    local pTable = {}
 
    -- Then loop through every spawn point found in the map.
    for k,v in pairs(ents.FindByClass("info_player_start")) do
        -- Set the variable 'idx' to the player's entity index.
        local idx = v:EntIndex() 
 
        -- Using the index as the key, add the entity (val) to the table.
        pTable[idx] = v
    end
 
    -- Return our filled table!
    return pTable
end