init.lua

local start = data.HitPos + data.HitNormal
    local endpos = data.HitPos - data.HitNormal

    local trace = {}
    trace.start = start
    trace.endpos = endpos
    trace.filter = self
    local tr = util.TraceLine(trace)

    for _,v in pairs(ents.FindInSphere(data.HitPos,65)) do
            if c == "nz_spawn_player" then return end
                if v == self.Owner then
                    local dmg3 = DamageInfo()
                    dmg3:SetDamage(25)
                    dmg3:SetAttacker(self.Owner or self)
                    dmg3:SetDamageForce(vector_origin)
                    dmg3:SetDamagePosition( self.Entity:GetPos() )
                    dmg3:SetInflictor( self.Owner )
                    v:TakeDamageInfo(dmg3)
                end
    end

    if tr.HitWorld then
        local heat = ents.Create( "info_particle_system" )
        heat:SetKeyValue( "effect_name", "tfa_qc_nail_impact_heat" )
        heat:SetOwner( self.Owner )
        heat:SetPos( tr.HitPos )
        heat:Spawn()
        heat:Activate()
        heat:Fire( "start", "", 0 )
        heat:Fire( "kill", "", 15 )
        util.Decal("Impact.Metal",start,endpos)
    end

    local effectdata = EffectData()
    effectdata:SetOrigin(self:GetPos())

    local explode2 = ents.Create( "info_particle_system" )
    explode2:SetKeyValue( "effect_name", "tfa_qc_nail_explode_flame" )
    explode2:SetOwner( self.Owner )
    explode2:SetPos( self:GetPos() )
    explode2:Spawn()
    explode2:Activate()
    explode2:Fire( "start", "", 0 )
    explode2:Fire( "kill", "", 15 )

    if data.HitEntity:IsNPC() or data.HitEntity:IsNextBot() or data.HitEntity:IsPlayer() then
        self:EmitSound( "TFA_QC_SUPERNAILGUN.FleshImpact" )
    else
        self:EmitSound( "TFA_QC_SUPERNAILGUN.Impact" )
    end

    if IsValid(self:GetOwner()) then
        self:RadiusDamage(tr.HitPos, self, self:GetOwner(), 20, 20, data.HitEntity, DMG_GENERIC)
    end

    timer.Simple(0, function()
        if IsValid(self) then
            self:Remove()
        end
    end)