if SERVER then
   AddCSLuaFile( "shared.lua" )
end

SWEP.HoldType			= "shotgun"

if CLIENT then
   SWEP.PrintName = "shotgun_name"

   SWEP.Slot = 2
   SWEP.Icon = "VGUI/ttt/icon_shotgun"
end


SWEP.Base				= "weapon_tttbase"
SWEP.Spawnable = true
SWEP.AdminSpawnable = true

SWEP.Kind = WEAPON_HEAVY
SWEP.WeaponID = AMMO_SHOTGUN

SWEP.Primary.Ammo = "Buckshot"
SWEP.Primary.Damage = 11
SWEP.Primary.Cone = 0.085
SWEP.Primary.Delay = 0.8
SWEP.Primary.ClipSize = 8
SWEP.Primary.ClipMax = 24
SWEP.Primary.DefaultClip = 8
SWEP.Primary.Automatic = true
SWEP.Primary.NumShots = 8
SWEP.AutoSpawnable      = true
SWEP.AmmoEnt = "item_box_buckshot_ttt"
SWEP.ViewModel			= "models/weapons/v_shot_xm1014.mdl"
SWEP.WorldModel			= "models/weapons/w_shot_xm1014.mdl"
SWEP.Primary.Sound			= Sound( "Weapon_XM1014.Single" )
SWEP.Primary.Recoil			= 7
--SWEP.IronSightsPos 		= Vector( 5.7, -3, 3 )

SWEP.IronSightsPos = Vector( 5.14, -5, 2.14 )
SWEP.IronSightsAng = Vector(0, 0.8, 0)

SWEP.reloadtimer = 0

function SWEP:SetupDataTables()
   self:DTVar("Bool", 0, "reloading")

   return self.BaseClass.SetupDataTables(self)
end

function SWEP:Reload()
   self:SetIronsights( false )
   
   --if self.Weapon:GetNetworkedBool( "reloading", false ) then return end
   if self.dt.reloading then return end

   if not IsFirstTimePredicted() then return end
   
   if self.Weapon:Clip1() < self.Primary.ClipSize and self.Owner:GetAmmoCount( self.Primary.Ammo ) > 0 then
      
      if self:StartReload() then
         return
      end
   end

end

function SWEP:StartReload()
   --if self.Weapon:GetNWBool( "reloading", false ) then
   if self.dt.reloading then
      return false
   end

   if not IsFirstTimePredicted() then return false end

   self.Weapon:SetNextPrimaryFire( CurTime() + self.Primary.Delay )
   
   local ply = self.Owner
   
   if not ply or ply:GetAmmoCount(self.Primary.Ammo) <= 0 then 
      return false
   end

   local wep = self.Weapon
   
   if wep:Clip1() >= self.Primary.ClipSize then 
      return false 
   end

   wep:SendWeaponAnim(ACT_SHOTGUN_RELOAD_START)

   self.reloadtimer =  CurTime() + wep:SequenceDuration()

   --wep:SetNWBool("reloading", true)
   self.dt.reloading = true

   return true
end

function SWEP:PerformReload()
   local ply = self.Owner
   
   -- prevent normal shooting in between reloads
   self.Weapon:SetNextPrimaryFire( CurTime() + self.Primary.Delay )

   if not ply or ply:GetAmmoCount(self.Primary.Ammo) <= 0 then return end

   local wep = self.Weapon

   if wep:Clip1() >= self.Primary.ClipSize then return end

   self.Owner:RemoveAmmo( 1, self.Primary.Ammo, false )
   self.Weapon:SetClip1( self.Weapon:Clip1() + 1 )

   wep:SendWeaponAnim(ACT_VM_RELOAD)

   self.reloadtimer = CurTime() + wep:SequenceDuration()
end

function SWEP:FinishReload()
   self.dt.reloading = false
   self.Weapon:SendWeaponAnim(ACT_SHOTGUN_RELOAD_FINISH)
   
   self.reloadtimer = CurTime() + self.Weapon:SequenceDuration()
end

function SWEP:CanPrimaryAttack()
   if self.Weapon:Clip1() <= 0 then
      self:EmitSound( "Weapon_Shotgun.Empty" )
      self:SetNextPrimaryFire( CurTime() + self.Primary.Delay )
      return false
   end
   return true
end

function SWEP:Think()
   if self.dt.reloading and IsFirstTimePredicted() then
      if self.Owner:KeyDown(IN_ATTACK) then
         self:FinishReload()
         return
      end
      
      if self.reloadtimer <= CurTime() then

         if self.Owner:GetAmmoCount(self.Primary.Ammo) <= 0 then
            self:FinishReload()
         elseif self.Weapon:Clip1() < self.Primary.ClipSize then
            self:PerformReload()
         else
            self:FinishReload()
         end
         return            
      end
   end
end

function SWEP:Deploy()
   self.dt.reloading = false
   self.reloadtimer = 0
   return self.BaseClass.Deploy(self)
end

-- The shotgun's headshot damage multiplier is based on distance. The closer it
-- is, the more damage it does. This reinforces the shotgun's role as short
-- range weapon by reducing effectiveness at mid-range, where one could score
-- lucky headshots relatively easily due to the spread.
function SWEP:GetHeadshotMultiplier(victim, dmginfo)
   local att = dmginfo:GetAttacker()
   if not ValidEntity(att) then return 3 end

   local dist = victim:GetPos():Distance(att:GetPos())
   local d = math.max(0, dist - 140)
   
   -- decay from 3.1 to 1 slowly as distance increases
   return 1 + math.max(0, (2.1 - 0.002 * (d ^ 1.25)))
end