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gamemodes/sandbox/entities/effects/lasertracer.lua

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+--[[
+| 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/
+--]]
+
+
+EFFECT.Mat = Material( "effects/spark" )
+
+function EFFECT:Init( data )
+
+	self.StartPos = data:GetStart()
+	self.EndPos = data:GetOrigin()
+
+	local ent = data:GetEntity()
+	local attid = data:GetAttachment()
+
+	if ( IsValid( ent ) && attid > 0 ) then
+		if ( ent.Owner == LocalPlayer() && LocalPlayer():GetViewModel() == LocalPlayer() ) then ent = ent.Owner:GetViewModel() end
+
+		local att = ent:GetAttachment( attid )
+		if ( att ) then
+			self.StartPos = att.Pos
+		end
+	end
+
+	self.Dir = self.EndPos - self.StartPos
+
+	self:SetRenderBoundsWS( self.StartPos, self.EndPos )
+
+	self.TracerTime = math.min( 1, self.StartPos:Distance( self.EndPos ) / 10000 )
+	self.Length = math.Rand( 0.1, 0.15 )
+
+	-- Die when it reaches its target
+	self.DieTime = CurTime() + self.TracerTime
+
+end
+
+function EFFECT:Think()
+
+	if ( CurTime() > self.DieTime ) then
+
+		-- Awesome End Sparks
+		local effectdata = EffectData()
+		effectdata:SetOrigin( self.EndPos + self.Dir:GetNormalized() * -2 )
+		effectdata:SetNormal( self.Dir:GetNormalized() * -3 )
+		effectdata:SetMagnitude( 1 )
+		effectdata:SetScale( 1 )
+		effectdata:SetRadius( 6 )
+		util.Effect( "Sparks", effectdata )
+
+		return false
+	end
+
+	return true
+
+end
+
+function EFFECT:Render()
+
+	local fDelta = ( self.DieTime - CurTime() ) / self.TracerTime
+	fDelta = math.Clamp( fDelta, 0, 1 ) ^ 0.5
+
+	render.SetMaterial( self.Mat )
+
+	local sinWave = math.sin( fDelta * math.pi )
+
+	render.DrawBeam( self.EndPos - self.Dir * ( fDelta - sinWave * self.Length ),
+		self.EndPos - self.Dir * ( fDelta + sinWave * self.Length ),
+		2 + sinWave * 16, 1, 0, Color( 0, 255, 0, 255 ) )
+
+end