local glow_mat = Material("trails/physbeam")
glow_mat:SetMaterialInt( "$spriterendermode", RENDERMODE_GLOW )

local orig_ball_size = 35
orig_ball_size = orig_ball_size / 2

function EFFECT:Init( data ) 
	self.plane = data:GetEntity()
 	if !ValidEntity(self.plane) then return end
	self.emitter = ParticleEmitter( self.plane:GetPos())
	self:SetRenderBounds( Vector(-1000,-1000,-1000),  Vector(1000,1000,1000))
	self.start = CurTime()
	
	self.roller = ClientsideModel("models/Roller.mdl", RENDERGROUP_OPAQUE)
	self.roller:SetPos(self.plane:GetPos())

	
	self:SetModel("models/props/sphere.mdl")
	//self:SetAngles(Angle(-90,0,0))
	self:SetMaterial("models/props_combine/portalball001_sheet")
	self:SetColor(200,100,255,255)
	self.die = false
	self.scale = 0
	self:SetPos(self.plane:GetPos())
	//self:SetParent(self.plane)
end

function EFFECT:Think()
   --[[	if not ValidEntity(self.plane) then
		return false
	end]]
	
	local x = (CurTime() - self.start)
	if !self.die and x > WEP_EMP_CHARGE_TIME then
		self.scale = math.Approach(self.scale, WEP_EMP_RANGE / orig_ball_size, 10)
	elseif x > 5 + WEP_EMP_CHARGE_TIME then
		self.scale = self.scale - 5
		if self.scale <= 0 then
			self.roller:Remove()
			return false
		end
	end
	if x < WEP_EMP_CHARGE_TIME then
		self.scale = self.scale + 0.02
	end
	if (self.scale * orig_ball_size) >= WEP_EMP_RANGE then
		self.die = true
	end
	
	self:SetModelScale(Vector(self.scale,self.scale,self.scale))
	
	
	if x > WEP_EMP_CHARGE_TIME and x < 5 and math.random(1,2) == 1 then
		local p_pos = Vector(math.sin(math.Rand(-4,4)),math.cos(math.Rand(-4,4)), math.sin(math.Rand(-4,4)))
		p_pos = p_pos * math.random(1, self.scale * orig_ball_size * 0.8)
		local p = self.emitter:Add("sprites/light_glow02_add", self:GetPos() + p_pos)
		if p then
			local vel =	VectorRand() * 2
			p:SetVelocity( vel )
			p:SetDieTime(5+WEP_EMP_CHARGE_TIME-x + math.Rand(-1,0.5))
			p:SetGravity( VectorRand() * 5 )
			p:SetStartSize(math.random(500,520))
			p:SetEndSize(math.random(780,800))
			p:SetStartAlpha( math.Rand( 200, 255 ) )
			p:SetAirResistance( 50 )
			p:SetEndAlpha( 0 )
			p:SetRoll(math.random(-30,30))
			local col = math.random(210,230)
			p:SetColor(col,col,255,math.random(180,250))
		end
	end
	return true
end
 
function EFFECT:DoSparks()	
	local start = self:GetPos()
	local endpos = start + (Vector(math.sin(math.Rand(-4,4)), math.cos(math.Rand(-4,4)), math.sin(math.Rand(-4,4))) * self.scale * orig_ball_size * 0.8)
	
	
	local dist = start:Distance(endpos)
	
	local resolution = math.ceil(dist / 10)
	
	local dir = (start - endpos):Normalize()
	
	render.SetMaterial(glow_mat)
	render.StartBeam(math.floor(dist / resolution))
	
	for i=0, dist, resolution do
		local pos = start + (dir * -i)
		if i != 1 and i != dist then
			pos = pos + (VectorRand() * 3)
		end
		render.AddBeam(
		pos, // Start position
		math.random(6,9), // Width
		CurTime(), // Texture coordinate
		Color( 255, 255, 255, 255 ) // Color
		)
	end
	render.EndBeam()
end
 
function EFFECT:Render()
	for i=1, 20 do //draw inside an outside!
		self:DrawModel()
		local scale = self:GetModelScale()
		self:SetModelScale(scale * -1)
	end
	local scale = math.abs(self:GetModelScale().x)
	self:SetModelScale(Vector(scale,scale,scale))

	
	if self.scale > 0.2 and (CurTime() - self.start) < WEP_EMP_CHARGE_TIME then
		for i=1,3 do
			self:DoSparks()
		end
	end
end