local function GetAmmoForCurrentWeapon( ply )
	if ( !IsValid( ply ) ) then return -1 end

	local wep = ply:GetActiveWeapon()
	if ( !IsValid( wep ) ) then return -1 end

	return ply:GetAmmoCount( wep:GetPrimaryAmmoType() )
end

local function DrawZenHud()

        --============================================================================--
		--=== 			LEWY GÓRNY PASEK HP + ARMOR
		--============================================================================--

		// kordynaty dla lewego górnego huda
		local ZenHudShape1 = {
			{ x = 0, y = 0 },
			{ x = 180, y = 0 },
			{ x = 180, y = 50 },
			{ x = 100, y = 100 },
			{ x = 0, y = 100 }
		}

		local ZenHudShape1_Padding = 1 + 2 * math.sin(ZenHudAnimTimer - CurTime() / 2)
		local ZenHudShape1_Detail = {
			{ x = 0, y = 0 },
			{ x = 180 + ZenHudShape1_Padding, y = 0 },
			{ x = 180 + ZenHudShape1_Padding, y = 50 + ZenHudShape1_Padding },
			{ x = 100 + ZenHudShape1_Padding, y = 100 + ZenHudShape1_Padding },
			{ x = 0, y = 100 + ZenHudShape1_Padding }
		}

		local ZenHudBackground = Color(40,40,40,255)
		local ZenHudDetail = Color(40,40,40,128)

		--surface.DrawRect( 0, 0, 128, 128 )

		surface.SetDrawColor( ZenHudDetail )

		// lewa strona u góry - background
		surface.DrawPoly( ZenHudShape1_Detail )

		surface.SetDrawColor( ZenHudBackground )

		// lewa strona u góry
		surface.DrawPoly( ZenHudShape1 )

		// Pasek zdrowia
		local ZenHPPos = 12

		surface.SetDrawColor( 255,255,255,255 )
		surface.SetMaterial( ZenHudHPIcon )
		surface.DrawTexturedRectUV( 12, ZenHPPos, 14, 14, 0, 0, 1, 1 )

		--draw.SimpleText("HP:" , "Trebuchet18", 12, ZenHPPos , Color( 255, 255, 255, 255 ), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP )

		draw.RoundedBox( 4, 35, ZenHPPos, 100, 15, Color( 55, 55, 55, 255 ) )
		draw.RoundedBox( 4, 35, ZenHPPos, math.Clamp( LocalPlayer():Health() , 0 , 100 ) , 15, Color( 255, 255, 255, 255 ) )

		local ZenHPAnimFactor = math.Clamp( LocalPlayer():Health() , 0 , 100 )
		local ZenHPTextAnim = math.sin(ZenHudAnimTimer - CurTime()*(ZenHPAnimFactor-100)/50)

		draw.SimpleText( tostring( LocalPlayer():Health() ) , "Trebuchet18", math.Clamp(12 + ZenHPAnimFactor, 35 , 150 ), ZenHPPos , Color( 255, 60, 50, 255 - 100 * ZenHPTextAnim ), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP )


		// Pasek pancerza
		local ZenArmPos = 42

		surface.SetMaterial( ZenHudArmorIcon )
		surface.DrawTexturedRectUV( 12, ZenArmPos, 14, 14, 0, 0, 1, 1 )

		--draw.SimpleText("Armor:" , "Trebuchet18", 4, ZenArmPos , Color( 255, 255, 255, 255 ), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP )

		draw.RoundedBox( 4, 35, ZenArmPos, 100, 15, Color( 55, 55, 55, 255 ) )
		draw.RoundedBox( 4, 35, ZenArmPos, math.Clamp( LocalPlayer():Armor() , 0 , 100 ) , 15, Color( 255, 255, 255, 255 ) )

		local ZenHPAnimFactor = math.Clamp( LocalPlayer():Armor() , 0 , 100 )
		local ZenHPTextAnim = math.sin(ZenHudAnimTimer - CurTime() * (ZenHPAnimFactor - 100) / 50)

		draw.SimpleText( tostring( LocalPlayer():Armor() ) , "Trebuchet18", math.Clamp(12 + ZenHPAnimFactor, 35 , 150 ), ZenArmPos , Color( 255, 60, 50, 255 - 100 * ZenHPTextAnim ), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP )


		--============================================================================--
		--=== 			PRAWY GÓRNY PASEK  AMUNICJA
		--============================================================================--

		// kordynaty dla lewego górnego huda

		local ZenHudShape2 = {
			{ x = ScrW()/2, y = ScrH()/2 },
			{ x = ScrW()-180, y = 0 },
			{ x = ScrW()-180, y = 50 },
			{ x = ScrW()-100, y = 100 },
			{ x = ScrW(), y = 100 },
		}

		local ZenHudShape2_Padding = 1 + 2 * math.sin(ZenHudAnimTimer - CurTime() / 2)
		local ZenHudShape2_Detail = {
			{ x = ScrW(), y = 0 },
			{ x = ScrW()-180 + ZenHudShape2_Padding, y = 0 },
			{ x = ScrW()-180 + ZenHudShape2_Padding, y = 50+ZenHudShape2_Padding },
			{ x = ScrW()-100 + ZenHudShape2_Padding, y = 100+ZenHudShape2_Padding },
			{ x = ScrW(), y = 100 + ZenHudShape2_Padding },
		}

		surface.SetDrawColor( Color(255,255,255,255) )

		--surface.SetDrawColor( ZenHudDetail )

		// Prawa strona u góry - background
		surface.DrawPoly( ZenHudShape2_Detail )

		--surface.SetDrawColor( ZenHudBackground )

		// Prawa strona u góry
		surface.DrawPoly( ZenHudShape2 )

		local PlayerAmmo = GetAmmoForCurrentWeapon( LocalPlayer() )
		if (PlayerAmmo != -1) then
			draw.SimpleText( "Amunicja: "..tostring( PlayerAmmo ) , "Trebuchet18", ScrW() - 100, 20 , Color( 255, 60, 50, 255 - 100 * ZenHPTextAnim ), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP )
		end

end

if CLIENT then
	local ZenHudHPIcon = Material( "icon16/heart.png", "noclamp" )
	local ZenHudArmorIcon = Material( "icon16/shield.png", "noclamp" )

	local ZenHudAnimTimer = CurTime()

	// Doczepiamy się do hooka HUDPaint i dodajemy do niego funkcje HUDPaint_ZenHud
	hook.Add( "HUDPaint", "HUDPaint_ZenHud", DrawZenHud() )

end

print("ZENHUD ZAŁADOWANY POPRAWNIE - SERVER + CLIENT SIDE")