function GAMEMODE:OnPlayerChangedTeam(ply, oldteam, newteam)
    local Cops = {
        "cinfantry1",
        "cinfantry2",
        "cinfantry3",
        "cinfantry4",
        "cinfantry5",
        "cinfantry6",
        "cinfantry7",
        "cinfantry8",
        "cinfantry9",
        "cinfantry10",
        "crecon1",
        "crecon2",
        "crecon3",
        "crecon4",
        "crecon5",
        "crecon6",
        "crecon7",
        "crecon8",
        "crecon9",
        "crecon10",
        "cballistic1",
        "cballistic2",
        "cballistic3",
        "cballistic4",
        "cballistic5",
        "cballistic6",
        "cballistic7",
        "cballistic8",
        "cballistic9",
        "cballistic10",
        "csupport1",
        "csupport2",
        "csupport3",
        "csupport4",
        "csupport5",
        "csupport6",
        "csupport7",
        "csupport8",
        "csupport9",
        "csupport10",
        "cmarksman1",
        "cmarksman2",
        "cmarksman3",
        "cmarksman4",
        "cmarksman5",
        "cmarksman6",
        "cmarksman7",
        "cmarksman8",
        "cmarksman9",
        "cmarksman10",
        "cspecial1",
        "cspecial2",
        "cspecial3",
        "cspecial4",
        "cspecial5",
        "cspecial6",
        "cspecial7",
        "cspecial8",
        "cspecial9",
        "cspecial10"
    }
    local Robbers = {
        "rinfantry1",
        "rinfantry2",
        "rinfantry3",
        "rinfantry4",
        "rinfantry5",
        "rinfantry6",
        "rinfantry7",
        "rinfantry8",
        "rinfantry9",
        "rinfantry10",
        "rrecon1",
        "rrecon2",
        "rrecon3",
        "rrecon4",
        "rrecon5",
        "rrecon6",
        "rrecon7",
        "rrecon8",
        "rrecon9",
        "rrecon10",
        "rballistic1",
        "rballistic2",
        "rballistic3",
        "rballistic4",
        "rballistic5",
        "rballistic6",
        "rballistic7",
        "rballistic8",
        "rballistic9",
        "rballistic10",
        "rsupport1",
        "rsupport2",
        "rsupport3",
        "rsupport4",
        "rsupport5",
        "rsupport6",
        "rsupport7",
        "rsupport8",
        "rsupport9",
        "rsupport10",
        "rmarksman1",
        "rmarksman2",
        "rmarksman3",
        "rmarksman4",
        "rmarksman5",
        "rmarksman6",
        "rmarksman7",
        "rmarksman8",
        "rmarksman9",
        "rmarksman10",
        "rspecial1",
        "rspecial2",
        "rspecial3",
        "rspecial4",
        "rspecial5",
        "rspecial6",
        "rspecial7",
        "rspecial8",
        "rspecial9",
        "rspecial10"
    }
local meta = FindMetaTable("Player")

function GM:PlayerShouldTakeDamage( ply, target )
        if ply:IsPlayer() then
                if ply:IsTeamOne() == target:IsTeamOne() then
                        return false
                elseif if ply:IsTeamTwo() == target:IsTeamTwo() then
                        return false
                end
        end
        return true
end

function meta:IsTeamOne()
        return table.HasValue(Cops,self:Team())
end

function meta:IsTeamTwo()
        return table.HasValue(Robbers,self:Team())
end