function SWEP:OnRestore()
end

function SWEP:GetHeadshotMultiplier(victim, dmginfo)
    return 1 -- Hey hey hey, don't forget about me!!!
end

function SWEP:IsEquipment()
    return WEPS.IsEquipment(self)
end

SWEP.IsSilent = false

-- The OnDrop() hook is useless for this as it happens AFTER the drop. OwnerChange
-- does not occur when a drop happens for some reason. Hence this thing.
function SWEP:PreDrop()
    if SERVER and IsValid(self:GetOwner()) and self.Primary.Ammo != "none" and self.Primary.Ammo != "" then
        local ammo = self:Ammo1()

        -- Do not drop ammo if we have another gun that uses this type
        for _, w in ipairs(self:GetOwner():GetWeapons()) do
            if IsValid(w) and w != self and w:GetPrimaryAmmoType() == self:GetPrimaryAmmoType() then
            ammo = 0
            end
        end

        self.StoredAmmo = ammo

        if ammo > 0 then
            self:GetOwner():RemoveAmmo(ammo, self.Primary.Ammo)
        end
    end
end

function SWEP:DampenDrop()
    -- For some reason gmod drops guns on death at a speed of 400 units, which
    -- catapults them away from the body. Here we want people to actually be able
    -- to find a given corpse's weapon, so we override the velocity here and call
    -- this when dropping guns on death.
    local phys = self:GetPhysicsObject()
    if IsValid(phys) then
        phys:SetVelocityInstantaneous(Vector(0,0,-75) + phys:GetVelocity() * 0.001)
        phys:AddAngleVelocity(phys:GetAngleVelocity() * -0.99)
    end
end

SWEP.StoredAmmo = 0

-- Picked up by player. Transfer of stored ammo and such.

function SWEP:Equip(newowner)
    if SERVER then
        if self:IsOnFire() then
            self:Extinguish()
        end

        self.fingerprints = self.fingerprints or {}

        if !table.HasValue(self.fingerprints, newowner) then
            table.insert(self.fingerprints, newowner)
        end

        if newowner:GetActiveWeapon() != self and self:GetValue("HolsterVisible") then
            net.Start("TacRP_updateholster")
                net.WriteEntity(self:GetOwner())
                net.WriteEntity(self)
            net.Broadcast()
        end
    end

    if SERVER and IsValid(newowner) and self.Primary.ClipMax and self.StoredAmmo > 0 and self.Primary.Ammo != "none" and self.Primary.Ammo != "" then
        local ammo = newowner:GetAmmoCount(self.Primary.Ammo)
        local given = math.min(self.StoredAmmo, self.Primary.ClipMax - ammo)

        newowner:GiveAmmo(given, self.Primary.Ammo)
        self.StoredAmmo = 0
    end

    self:SetHolsterTime(0)
    self:SetHolsterEntity(NULL)
    self:SetReloadFinishTime(0)
end

-- other guns may use this function to setup stuff
function SWEP:TTTBought(buyer)
end

function SWEP:WasBought(buyer)
    if buyer:GetActiveWeapon() != self and self:GetValue("HolsterVisible") then
        net.Start("TacRP_updateholster")
            net.WriteEntity(self:GetOwner())
            net.WriteEntity(self)
        net.Broadcast()
    end

    self:TTTBought(buyer)
end

function SWEP:TTT_PostAttachments()
end

function SWEP:TTT_Init()
    if engine.ActiveGamemode() != "terrortown" then return end

    if SERVER then
        self.fingerprints = {}


        local att_chance = TacRP.ConVars["ttt_atts_random"]:GetFloat()
        local att_max = TacRP.ConVars["ttt_atts_max"]:GetFloat()
        local added = 0

        if att_chance > 0 then
            for i, slot in pairs(self.Attachments) do
                if math.random() > att_chance then continue end

                local atts = TacRP.GetAttsForCats(slot.Category or "", self)
                local ind = math.random(1, #atts)
                slot.Installed = atts[ind]
                added = added + 1

                if att_max > 0 and added >= att_max then break end
            end

            self:InvalidateCache()
            self:SetBaseSettings()

            if added > 0 then
                self:NetworkWeapon()
            end
        end
    end

    if self.PrimaryGrenade then
        self.Primary.ClipMax = 1
        return
    end

    self.Primary.ClipMax = TacRP.TTTAmmoToClipMax[string.lower(self.AmmoTTT or self.Ammo)] or self.Primary.ClipSize * 2
    self:SetClip1(self.Primary.ClipSize)
    self.GaveDefaultAmmo = true
end

--- TTT2 uses this to populate custom convars in the equip menu
function SWEP:AddToSettingsMenu(parent)
end