--[[
| This file was obtained through the combined efforts
| of Madbluntz & Plymouth Antiquarian Society.
|
| Credits: lifestorm, Gregory Wayne Rossel JR.,
| 	Maloy, DrPepper10 @ RIP, Atle!
|
| Visit for more: https://plymouth.thetwilightzone.ru/
--]]


-- Copyright (c) 2018-2020 TFA Base Devs

-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:

-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.

-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.

EFFECT.Mat = Material("effects/laser_tracer")
EFFECT.Col1 = Color(128, 255, 255) --Color(225,225,225,225)
EFFECT.Col2 = Color(97, 218, 255)
EFFECT.Speed = 4096
EFFECT.TracerLength = 128

--[[---------------------------------------------------------
Init( data table )
-----------------------------------------------------------]]
function EFFECT:Init(data)
	self.Position = data:GetStart()
	self.WeaponEnt = data:GetEntity()
	self.Attachment = data:GetAttachment()

	if IsValid(self.WeaponEnt) and self.WeaponEnt.GetMuzzleAttachment then
		self.Attachment = self.WeaponEnt:GetMuzzleAttachment()
	end

	-- Keep the start and end pos - we're going to interpolate between them
	self.StartPos = self:GetTracerShootPos(self.Position, self.WeaponEnt, self.Attachment)
	self.EndPos = data:GetOrigin()
	self.Normal = (self.EndPos - self.StartPos):GetNormalized()
	self.Length = (self.EndPos - self.StartPos):Length()
	--self.Alpha = 255
	self.Life = 0
	self.MaxLife = self.Length / self.Speed
	self:SetRenderBoundsWS(self.StartPos, self.EndPos)
	self.CurPos = self.StartPos
end

--[[---------------------------------------------------------
THINK
-----------------------------------------------------------]]
function EFFECT:Think()
	self.Life = self.Life + FrameTime() * (1 / self.MaxLife)
	--self.Alpha = 255 * ( 1 - self.Life )

	return self.Life < 1
end

--[[---------------------------------------------------------
Draw the effect
-----------------------------------------------------------]]
local lerpedcol = Color(225, 225, 225, 225)

function EFFECT:Render()
render.SetMaterial(self.Mat)
lerpedcol.r = Lerp(self.Life, self.Col1.r, self.Col2.r)
lerpedcol.g = Lerp(self.Life, self.Col1.g, self.Col2.g)
lerpedcol.b = Lerp(self.Life, self.Col1.b, self.Col2.b)
lerpedcol.a = Lerp(self.Life, self.Col1.a, self.Col2.a)
local startbeampos = Lerp(self.Life, self.StartPos, self.EndPos)
local endbeampos = Lerp(self.Life + self.TracerLength / self.Length, self.StartPos, self.EndPos)
render.DrawBeam(startbeampos, endbeampos, 8, 0, 1, lerpedcol)
end