GDCW Impact Error

[overki11]

Hi. I asked permission for their code of some modified GDCW base stuff, and I ran into this error whenever a round impacts with grass. Every other material is fine.

Excuse me if it's something simple, I'm a total noob to lua.

[ERROR] addons/laser weapons/lua/effects/lase_universal_impact/init.lua:46: attempt to index a nil value
  1. unknown - addons/laser weapons/lua/effects/lase_universal_impact/init.lua:46

Here is the full lua file that it has a problem with.

					//Sound,Impact

					// 1        2       3      4      5
					//Dirt, Concrete, Metal, Glass, Flesh

					// 1     2     3      4      5      6      7      8         9
					//Dust, Dirt, Sand, Metal, Smoke, Wood,  Glass, Blood, YellowBlood
local mats={				
	[MAT_ALIENFLESH]		={9},
	[MAT_ANTLION]			={9},
	[MAT_BLOODYFLESH]		={8},
	[45]				={8},	// Metrocop heads are a source glitch, they have no enumeration
	[88]				={5},	// Map boundary glitch is now accounted for!
	[MAT_CLIP]			={5},
	[MAT_COMPUTER]			={5},
	[MAT_FLESH]			={8},
	[MAT_GRATE]			={4},
	[MAT_METAL]			={4},
	[MAT_PLASTIC]			={5},
	[MAT_SLOSH]			={5},
	[MAT_VENT]			={4},
	[MAT_FOLIAGE]			={5},
	[MAT_TILE]			={5},
	[MAT_CONCRETE]			={1},
	[MAT_DIRT]			={2},
	[MAT_SAND]			={3},
	[MAT_WOOD]			={6},
	[MAT_GLASS]			={7},
}


function EFFECT:Init(data)
self.Pos 		= data:GetOrigin()		// Pos determines the global position of the effect			//

self.DirVec 		= data:GetNormal()		// DirVec determines the direction of impact for the effect		//
self.PenVec 		= data:GetStart()		// PenVec determines the direction of the round for penetrations	//
self.Scale 		= data:GetScale()		// Scale determines how large the effect is				//
self.Radius 		= data:GetRadius() or 1		// Radius determines what type of effect to create, default is Concrete	//

self.Emitter 		= ParticleEmitter( self.Pos )	// Emitter must be there so you don't get an error			//


	self.Mat=math.ceil(self.Radius)
 
	if     mats[self.Mat][1]==1 then	self:Dust()	
	elseif mats[self.Mat][1]==2 then	self:Dirt()
	elseif mats[self.Mat][1]==3 then	self:Sand()
	elseif mats[self.Mat][1]==4 then	self:Metal()
	elseif mats[self.Mat][1]==5 then	self:Smoke()
	elseif mats[self.Mat][1]==6 then	self:Wood()
	elseif mats[self.Mat][1]==7 then	self:Glass()
	elseif mats[self.Mat][1]==8 then	self:Blood()
	elseif mats[self.Mat][1]==9 then	self:YellowBlood()
	else 					self:Smoke()
	end

end
 
 function EFFECT:Dust()
	sound.Play( "Bullet.Concrete", self.Pos)
	self.Emitter = ParticleEmitter( self.Pos )
		
	for i=0, 15*self.Scale do
		local Smoke = self.Emitter:Add( "particle/smokesprites_000"..math.random(1,9), self.Pos )
		if (Smoke) then
		Smoke:SetVelocity( self.DirVec * math.random( 20,500*self.Scale) + VectorRand():GetNormalized()*100*self.Scale )
		Smoke:SetDieTime( math.Rand( 1 , 3 )*self.Scale )
		Smoke:SetStartAlpha( math.Rand( 80, 100 ) )
		Smoke:SetEndAlpha( 0 )
		Smoke:SetStartSize( 15*self.Scale )
		Smoke:SetEndSize( 35*self.Scale )
		Smoke:SetRoll( math.Rand(150, 360) )
		Smoke:SetRollDelta( math.Rand(-2, 2) )			
		Smoke:SetAirResistance( 300 ) 			 
		Smoke:SetGravity( Vector( math.Rand(-70, 70) * self.Scale, math.Rand(-70, 70) * self.Scale, math.Rand(0, -100) ) ) 			
		Smoke:SetColor( 0,148,255,255 )
		end
	end

	for i=0, 10*self.Scale do
		local Smoke = self.Emitter:Add( "particle/particle_composite", self.Pos )
		if (Smoke) then
		Smoke:SetVelocity( self.DirVec * math.random( 0,400*self.Scale) + VectorRand():GetNormalized()*5*self.Scale )
		Smoke:SetDieTime( math.Rand( 0.5 , 1.5 )*self.Scale )
		Smoke:SetStartAlpha( 150 )
		Smoke:SetEndAlpha( 0 )
		Smoke:SetStartSize( 20*self.Scale )
		Smoke:SetEndSize( 35*self.Scale )
		Smoke:SetRoll( math.Rand(150, 360) )
		Smoke:SetRollDelta( math.Rand(-2, 2) )			
		Smoke:SetAirResistance( 400 ) 			 
		Smoke:SetGravity( Vector( math.Rand(-50, 50) * self.Scale, math.Rand(-50, 50) * self.Scale, math.Rand(0, -100) ) ) 			
		Smoke:SetColor( 105,100,90 )
		end
	end

	for i=0, 10*self.Scale do
		local Debris = self.Emitter:Add( "effects/fleck_cement"..math.random(1,2), self.Pos )
		if (Debris) then
		Debris:SetVelocity ( self.DirVec * math.random(200,300*self.Scale) + VectorRand():GetNormalized() * 300*self.Scale )
		Debris:SetDieTime( math.random( 0.6, 1) )
		Debris:SetStartAlpha( 255 )
		Debris:SetEndAlpha( 0 )
		Debris:SetStartSize( math.random(2,5*self.Scale) )
		Debris:SetRoll( math.Rand(0, 360) )
		Debris:SetRollDelta( math.Rand(-5, 5) )			
		Debris:SetAirResistance( 50 ) 			 			
		Debris:SetColor( 105,100,90 )
		Debris:SetGravity( Vector( 0, 0, -600) ) 
		Debris:SetCollide( true )
		Debris:SetBounce( 1 )			
		end
	end
	
		for i=0,1 do 
			local Flash = self.Emitter:Add( "effects/muzzleflash"..math.random(1,4), self.Pos )
			if (Flash) then
			Flash:SetVelocity( self.DirVec*100 )
			Flash:SetAirResistance( 200 )
			Flash:SetDieTime( 0.1 )
			Flash:SetStartAlpha( 255 )
			Flash:SetEndAlpha( 0 )
			Flash:SetStartSize( math.Rand( 30, 40 )*self.Scale )
			Flash:SetEndSize( 0 )
			Flash:SetRoll( math.Rand(180,480) )
			Flash:SetRollDelta( math.Rand(-1,1) )
			Flash:SetColor(255,255,255)	
			end
		end
 end
 
 function EFFECT:Dirt()
	sound.Play( "Bullet.Dirt", self.Pos)

	self.Emitter = ParticleEmitter( self.Pos )
		
	for i=0, 15*self.Scale do
		local Smoke = self.Emitter:Add( "particle/smokesprites_000"..math.random(1,9), self.Pos )
		if (Smoke) then
		Smoke:SetVelocity( self.DirVec * math.random( 20,500*self.Scale) + VectorRand():GetNormalized()*100*self.Scale )
		Smoke:SetDieTime( math.Rand( 1 , 3 )*self.Scale )
		Smoke:SetStartAlpha( math.Rand( 80, 100 ) )
		Smoke:SetEndAlpha( 0 )
		Smoke:SetStartSize( 15*self.Scale )
		Smoke:SetEndSize( 35*self.Scale )
		Smoke:SetRoll( math.Rand(150, 360) )
		Smoke:SetRollDelta( math.Rand(-2, 2) )			
		Smoke:SetAirResistance( 300 ) 			 
		Smoke:SetGravity( Vector( math.Rand(-70, 70) * self.Scale, math.Rand(-70, 70) * self.Scale, math.Rand(0, -100) ) ) 			
		Smoke:SetColor( 0,148,255,255 )
		end
	end

	for i=0, 10*self.Scale do
		local Smoke = self.Emitter:Add( "particle/particle_composite", self.Pos )
		if (Smoke) then
		Smoke:SetVelocity( self.DirVec * math.random( 0,400*self.Scale) + VectorRand():GetNormalized()*5*self.Scale )
		Smoke:SetDieTime( math.Rand( 0.5 , 1.5 )*self.Scale )
		Smoke:SetStartAlpha( 200 )
		Smoke:SetEndAlpha( 0 )
		Smoke:SetStartSize( 20*self.Scale )
		Smoke:SetEndSize( 30*self.Scale )
		Smoke:SetRoll( math.Rand(150, 360) )
		Smoke:SetRollDelta( math.Rand(-2, 2) )			
		Smoke:SetAirResistance( 400 ) 			 
		Smoke:SetGravity( Vector( math.Rand(-50, 50) * self.Scale, math.Rand(-50, 50) * self.Scale, math.Rand(0, -100) ) ) 			
		Smoke:SetColor( 90,83,68 )
		end
	end

	for i=0, 15*self.Scale do
		local Debris = self.Emitter:Add( "effects/fleck_cement"..math.random(1,2), self.Pos )
		if (Debris) then
		Debris:SetVelocity ( self.DirVec * math.random(200,300*self.Scale) + VectorRand():GetNormalized() * 300*self.Scale )
		Debris:SetDieTime( math.random( 0.75, 1.25) )
		Debris:SetStartAlpha( 255 )
		Debris:SetEndAlpha( 0 )
		Debris:SetStartSize( math.random(3,7*self.Scale) )
		Debris:SetRoll( math.Rand(0, 360) )
		Debris:SetRollDelta( math.Rand(-5, 5) )			
		Debris:SetAirResistance( 50 ) 			 			
		Debris:SetColor( 90,83,68 )
		Debris:SetGravity( Vector( 0, 0, -600) ) 
		Debris:SetCollide( true )
		Debris:SetBounce( 1 )			
		end
	end
	
		for i=0,1 do 
			local Flash = self.Emitter:Add( "effects/muzzleflash"..math.random(1,4), self.Pos )
			if (Flash) then
			Flash:SetVelocity( self.DirVec*100 )
			Flash:SetAirResistance( 200 )
			Flash:SetDieTime( 0.1 )
			Flash:SetStartAlpha( 255 )
			Flash:SetEndAlpha( 0 )
			Flash:SetStartSize( math.Rand( 10, 20 )*self.Scale )
			Flash:SetEndSize( 0 )
			Flash:SetRoll( math.Rand(180,480) )
			Flash:SetRollDelta( math.Rand(-1,1) )
			Flash:SetColor(255,255,255)	
			end
		end
 end

 function EFFECT:Sand()
	sound.Play( "Bullet.Dirt", self.Pos)
	self.Emitter = ParticleEmitter( self.Pos )
		
	for i=0, 15*self.Scale do
		loca

[c👌de_g🎷]

Can you add a print to what self.Mat is once you've set it?

[overki11]

What? Haha, I know no lua at all. The person that made the addon let me use his code.

[Invule]

Ask him?

[c👌de_g🎷]

Put print( self.Mat )

After self.Mat is declared