local Materials = {
	"particle/smokesprites_0001",
	"particle/smokesprites_0002",
	"particle/smokesprites_0003",
	"particle/smokesprites_0004",
	"particle/smokesprites_0005",
	"particle/smokesprites_0006",
	"particle/smokesprites_0007",
	"particle/smokesprites_0008",
	"particle/smokesprites_0009",
	"particle/smokesprites_0010",
	"particle/smokesprites_0011",
	"particle/smokesprites_0012",
	"particle/smokesprites_0013",
	"particle/smokesprites_0014",
	"particle/smokesprites_0015",
	"particle/smokesprites_0016"
}

local function RandVector(min,max)
	min = min or -1
	max = max or 1
	
	local vec = Vector(math.Rand(min,max),math.Rand(min,max),math.Rand(min,max))
	return vec
end

function EFFECT:Init( data )
	local Pos = data:GetOrigin()
	local Entity = data:GetEntity()
	
	if not IsValid( Entity ) then return end
	
	local Vel = Entity:GetVelocity() * 0.9
	
	self:Smoke( Pos, Vel )
	self:Flame1( Pos, Vel )
	self:Flame2( Pos, Vel )
end

function EFFECT:Smoke( pos, vel )	
	local emitter = ParticleEmitter( pos, false )

	local particle = emitter:Add( Materials[math.Round(math.Rand(1,table.Count( Materials )),0)], pos )
	
	local vz = math.min(vel:Length(),600)
	
	if particle then
		particle:SetVelocity( RandVector() * 5 + Vector(0,0,40 + vz) + vel * 0.1 )
		particle:SetDieTime( 1 )
		particle:SetAirResistance( vz ) 
		particle:SetStartAlpha( 100 )
		particle:SetStartSize( 25 )
		particle:SetEndSize( math.Rand(60,80) )
		particle:SetRoll( math.Rand(-1,1) * 100 )
		particle:SetColor( 40,40,40 )
		particle:SetGravity( Vector( 0, 0, 100 ) )
		particle:SetCollide( false )
	end
	
	emitter:Finish()
end

function EFFECT:Flame1( pos, vel )
	for i = 0,3 do
		pos = pos + RandVector() * 5
		
		local emitter = ParticleEmitter( pos, false )
		
		local particle = emitter:Add( "particles/flamelet"..math.random(1,5), pos )
		
		if particle then
			particle:SetVelocity( Vector(0,0,40) + vel )
			particle:SetDieTime( 0.45 - (math.min(vel:Length(),600) / 600) * 0.25 )
			particle:SetAirResistance( 0 ) 
			particle:SetStartAlpha( 255 )
			particle:SetStartSize( math.Rand(10,14) )
			particle:SetEndSize( math.Rand(0,6) )
			particle:SetRoll( math.Rand(-1,1) * 180 )
			particle:SetColor( 255,255,255 )
			particle:SetGravity( Vector( 0, 0, 40 ) )
			particle:SetCollide( false )
		end
		
		emitter:Finish()
	end
end

function EFFECT:Flame2( pos, vel )
	pos = pos + RandVector() * 5
	
	local emitter = ParticleEmitter( pos, false )
	
	local particle = emitter:Add( "particles/fire1", pos )
	
	if particle then
		particle:SetVelocity( Vector(0,0,70) + vel )
		particle:SetDieTime( 0.6 - (math.min(vel:Length(),600) / 600) * 0.4 )
		particle:SetAirResistance( 0 ) 
		particle:SetStartAlpha( 255 )
		particle:SetStartSize( math.Rand(10,14) )
		particle:SetEndSize( math.Rand(0,6) )
		particle:SetRoll( math.Rand(-1,1) * 180 )
		particle:SetColor( 255,255,255 )
		particle:SetGravity( Vector( 0, 0, 70 ) )
		particle:SetCollide( false )
	end
	
	emitter:Finish()
end

function EFFECT:Think()
	return false
end

function EFFECT:Render()
end