/*
Hey you! You are reading my code!
I want to say that my code is far from perfect, and if you see that I'm doing something
in a really wrong/dumb way, please give me advices instead of saying "LOL U BAD CODER"
        Thanks
      - MadJawa
*/
include( "shared.lua" );

language.Add( "gmod_laser", "Laser" );

killicon.Add( "gmod_laser", "VGUI/entities/gmod_laser_killicon", Color( 255, 255, 255, 255 ) );

ENT.RenderGroup = RENDERGROUP_BOTH;

-- FIXME : find a better way to render the laser (Scripted Effect?)
function ENT:Draw()

	self.Entity:DrawModel();
	
	if ( self:GetOn() ) then
		local trace = {};
		
		local beamStart = self.Entity:GetPos();		
		local beamDir = self:GetBeamDirection();
		local beamLength = self:GetBeamLength();
		local beamFilter = self.Entity;
		
		local beamPoints = { beamStart };
		
		local bounces = 0;
		
		repeat
			if ( StarGate ~= nil ) then
				trace = StarGate.Trace:New( beamStart, beamDir:Normalize() * beamLength, beamFilter );
			else
				trace = util.QuickTrace( beamStart, beamDir:Normalize() * beamLength, beamFilter )
			end
			
			table.insert( beamPoints, trace.HitPos );
			
			if ( trace.Entity and trace.Entity:IsValid() and trace.Entity:GetModel() == "models/madjawa/laser_reflector.mdl" ) then
				isMirror = true;
				beamStart = trace.HitPos;
				beamDir = LaserLib.GetReflectedVector( beamDir, trace.HitNormal );
				beamLength = beamLength - beamLength * trace.Fraction;
				beamFilter = trace.Entity;
				bounces = bounces + 1;
			else
				isMirror = false;
			end
		until ( isMirror == false or bounces > LASER_MAXBOUNCES )
		
		local beamWidth = self:GetBeamWidth();
		local prevPoint = self.Entity:GetPos();
		local bbmin = self.Entity:OBBMins();
		local bbmax = self.Entity:OBBMaxs();
				
		render.SetMaterial( Material( self:GetBeamMaterial() ) );
		for k, v in pairs ( beamPoints ) do
		
			if ( prevPoint ~= v ) then
				render.DrawBeam( prevPoint, v, beamWidth, 13*CurTime(), 13*CurTime() - ( v - prevPoint ):Length()/9, Color( 255, 255, 255, 255 ) );
			end
			prevPoint = v;
			
			if ( v.x < bbmin.x ) then bbmin.x = v.x; end
			if ( v.y < bbmin.y ) then bbmin.y = v.y; end
			if ( v.z < bbmin.z ) then bbmin.z = v.z; end
			if ( v.x > bbmax.x ) then bbmax.x = v.x; end
			if ( v.y > bbmax.y ) then bbmax.y = v.y; end
			if ( v.z > bbmax.z ) then bbmax.z = v.z; end
			
		end
		
		self.NextEffect = self.NextEffect or CurTime();
		if ( not trace.HitSky and self:GetEndingEffect() and CurTime() >= self.NextEffect ) then
			local effectdata = EffectData();
				effectdata:SetStart( trace.HitPos );
				effectdata:SetOrigin( trace.HitPos );
				effectdata:SetNormal( trace.HitNormal );
				effectdata:SetScale( 1 );
			util.Effect( "AR2Impact", effectdata );
			
			self.NextEffect = CurTime() + 0.1;
		end
		
		self.Entity:SetRenderBoundsWS( bbmin, bbmax );
	end

end