local invalidUDNames = {
    ["terraunit"] = true,
    ["slicer"] = true
}
local validUnits = {}
local sortedUnits = {}
for name, ud in pairs(UnitDefs) do
    if validunitnames[ud.name] and not invalidUDNames[ud.name] then
        table.insert(validUnits, ud)
    end
end
table.sort(validUnits, function(a, b) return a.metalCost < b.metalCost end)
for i, ud in ipairs(validUnits) do
    if not ud.customparams then
        ud.customparams = {}
    end
    if not ud.customparams.morphto then
        ud.customparams.morphto = ""
    end
    if not ud.customparams.morphtime then
        ud.customparams.morphtime = 4
    end
    if validUnits[i + 1] then
        ud.customparams.morphto = validUnits[i + 1].name
    else
        ud.customparams.morphto = ""
    end
end