TOOL.Category = "Constraints"
TOOL.Name = "#tool.hydraulic.name"

TOOL.ClientConVar[ "group" ] = "37"
TOOL.ClientConVar[ "width" ] = "3"
TOOL.ClientConVar[ "addlength" ] = "100"
TOOL.ClientConVar[ "fixed" ] = "1"
TOOL.ClientConVar[ "speed" ] = "64"
TOOL.ClientConVar[ "toggle" ] = "1"
TOOL.ClientConVar[ "material" ] = "cable/rope"
TOOL.ClientConVar[ "color_r" ] = "255"
TOOL.ClientConVar[ "color_g" ] = "255"
TOOL.ClientConVar[ "color_b" ] = "255"

TOOL.Information = {
	{ name = "left", stage = 0 },
	{ name = "left_1", stage = 1, op = 1 },
	{ name = "right", stage = 0 },
	{ name = "reload" }
}

function TOOL:LeftClick( trace )

	if ( IsValid( trace.Entity ) && trace.Entity:IsPlayer() ) then return false end

	-- If there's no physics object then we can't constraint it!
	if ( SERVER && !util.IsValidPhysicsObject( trace.Entity, trace.PhysicsBone ) ) then return false end

	local iNum = self:NumObjects()

	local Phys = trace.Entity:GetPhysicsObjectNum( trace.PhysicsBone )
	self:SetObject( iNum + 1, trace.Entity, trace.HitPos, Phys, trace.PhysicsBone, trace.HitNormal )
	self:SetOperation( 1 )

	if ( iNum > 0 ) then

		if ( CLIENT ) then
			self:ClearObjects()
			return true
		end

		if ( ( !IsValid( self:GetEnt( 1 ) ) && !IsValid( self:GetEnt( 2 ) ) ) || iNum > 1 ) then
			self:ClearObjects()
			return true
		end

		local ply = self:GetOwner()
		if ( !ply:CheckLimit( "ropeconstraints" ) ) then
			self:ClearObjects()
			return false
		end

		-- Get client's CVars
		local width = self:GetClientNumber( "width", 3 )
		local bind = self:GetClientNumber( "group", 1 )
		local addLength = self:GetClientNumber( "addlength", 0 )
		local fixed = self:GetClientNumber( "fixed", 1 )
		local speed = self:GetClientNumber( "speed", 64 )
		local material = self:GetClientInfo( "material" )
		local toggle = self:GetClientNumber( "toggle" ) != 0
		local colorR = self:GetClientNumber( "color_r" )
		local colorG = self:GetClientNumber( "color_g" )
		local colorB = self:GetClientNumber( "color_b" )

		-- Get information we're about to use
		local Ent1, Ent2 = self:GetEnt( 1 ), self:GetEnt( 2 )
		local Bone1, Bone2 = self:GetBone( 1 ), self:GetBone( 2 )
		local LPos1, LPos2 = self:GetLocalPos( 1 ), self:GetLocalPos( 2 )
		local WPos1, WPos2 = self:GetPos( 1 ), self:GetPos( 2 )

		local lengthMin = ( WPos1 - WPos2 ):Length()
		local lengthMax = lengthMin + addLength

		local constr, rope, controller, slider = constraint.Hydraulic( ply, Ent1, Ent2, Bone1, Bone2, LPos1, LPos2, lengthMin, lengthMax, width, bind, fixed, speed, material, toggle, Color( colorR, colorG, colorB ) )
		if ( IsValid( constr ) ) then
			undo.Create( "Hydraulic" )
				undo.AddEntity( constr )
				if ( IsValid( rope ) ) then undo.AddEntity( rope ) end
				if ( IsValid( slider ) ) then undo.AddEntity( slider ) end
				if ( IsValid( controller ) ) then undo.AddEntity( controller ) end
				undo.SetPlayer( ply )
				undo.SetCustomUndoText( "Undone #tool.hydraulic.name" )
			undo.Finish( "#tool.hydraulic.name" )

			ply:AddCount( "ropeconstraints", constr )
			ply:AddCleanup( "ropeconstraints", constr )
			if ( IsValid( rope ) ) then ply:AddCleanup( "ropeconstraints", rope ) end
			if ( IsValid( slider ) ) then ply:AddCleanup( "ropeconstraints", slider ) end
			if ( IsValid( controller ) ) then ply:AddCleanup( "ropeconstraints", controller ) end
		end

		-- Clear the objects so we're ready to go again
		self:ClearObjects()

	else

		self:SetStage( iNum + 1 )

	end

	return true

end

function TOOL:RightClick( trace )

	if ( self:GetOperation() == 1 ) then return false end

	-- If there's no physics object then we can't constraint it!
	if ( SERVER && !util.IsValidPhysicsObject( trace.Entity, trace.PhysicsBone ) ) then return false end

	local Phys = trace.Entity:GetPhysicsObjectNum( trace.PhysicsBone )
	self:SetObject( 1, trace.Entity, trace.HitPos, Phys, trace.PhysicsBone, trace.HitNormal )

	local ply = self:GetOwner()

	local tr_new = {}
	tr_new.start = trace.HitPos
	tr_new.endpos = trace.HitPos + ( trace.HitNormal * 16384 )
	tr_new.filter = { ply }
	if ( IsValid( trace.Entity ) ) then
		table.insert( tr_new.filter, trace.Entity )
	end

	local tr = util.TraceLine( tr_new )
	if ( !tr.Hit ) then
		self:ClearObjects()
		return
	end

	-- Don't try to constrain world to world
	if ( trace.HitWorld && tr.HitWorld ) then
		self:ClearObjects()
		return
	end

	if ( IsValid( trace.Entity ) && trace.Entity:IsPlayer() ) then
		self:ClearObjects()
		return
	end

	if ( IsValid( tr.Entity ) && tr.Entity:IsPlayer() ) then
		self:ClearObjects()
		return
	end

	-- Check to see if the player can create a hydraulic constraint with the entity in the trace
	if ( !hook.Run( "CanTool", ply, tr, "hydraulic", self, 2 ) ) then
		self:ClearObjects()
		return
	end

	local Phys2 = tr.Entity:GetPhysicsObjectNum( tr.PhysicsBone )
	self:SetObject( 2, tr.Entity, tr.HitPos, Phys2, tr.PhysicsBone, tr.HitNormal )

	if ( CLIENT ) then
		self:ClearObjects()
		return true
	end

	if ( !ply:CheckLimit( "ropeconstraints" ) ) then
		self:ClearObjects()
		return false
	end

	-- Get client's CVars
	local width = self:GetClientNumber( "width", 3 )
	local bind = self:GetClientNumber( "group", 1 )
	local AddLength = self:GetClientNumber( "addlength", 0 )
	local fixed = self:GetClientNumber( "fixed", 1 )
	local speed = self:GetClientNumber( "speed", 64 )
	local material = self:GetClientInfo( "material" )
	local toggle = self:GetClientNumber( "toggle" ) != 0
	local colorR = self:GetClientNumber( "color_r" )
	local colorG = self:GetClientNumber( "color_g" )
	local colorB = self:GetClientNumber( "color_b" )

	-- Get information we're about to use
	local Ent1, Ent2 = self:GetEnt( 1 ), self:GetEnt( 2 )
	local Bone1, Bone2 = self:GetBone( 1 ), self:GetBone( 2 )
	local LPos1, LPos2 = self:GetLocalPos( 1 ), self:GetLocalPos( 2 )
	local WPos1, WPos2 = self:GetPos( 1 ), self:GetPos( 2 )

	local Length1 = ( WPos1 - WPos2 ):Length()
	local Length2 = Length1 + AddLength

	local constr, rope, controller, slider = constraint.Hydraulic( ply, Ent1, Ent2, Bone1, Bone2, LPos1, LPos2, Length1, Length2, width, bind, fixed, speed, material, toggle, Color( colorR, colorG, colorB ) )
	if ( IsValid( constr ) ) then
		undo.Create( "Hydraulic" )
			undo.AddEntity( constr )
			if ( IsValid( rope ) ) then undo.AddEntity( rope ) end
			if ( IsValid( slider ) ) then undo.AddEntity( slider ) end
			if ( IsValid( controller ) ) then undo.AddEntity( controller ) end
			undo.SetPlayer( ply )
			undo.SetCustomUndoText( "Undone #tool.hydraulic.name" )
		undo.Finish( "#tool.hydraulic.name" )

		ply:AddCount( "ropeconstraints", constr )
		ply:AddCleanup( "ropeconstraints", constr )
		if ( IsValid( rope ) ) then ply:AddCleanup( "ropeconstraints", rope ) end
		if ( IsValid( slider ) ) then ply:AddCleanup( "ropeconstraints", slider ) end
		if ( IsValid( controller ) ) then ply:AddCleanup( "ropeconstraints", controller ) end
	end

	-- Clear the objects so we're ready to go again
	self:ClearObjects()

	return true

end

function TOOL:Reload( trace )

	if ( !IsValid( trace.Entity ) || trace.Entity:IsPlayer() ) then return false end
	if ( CLIENT ) then return true end

	return constraint.RemoveConstraints( trace.Entity, "Hydraulic" )

end

function TOOL:Holster()

	self:ClearObjects()

end

local ConVarsDefault = TOOL:BuildConVarList()

function TOOL.BuildCPanel( CPanel )

	CPanel:Help( "#tool.hydraulic.help" )
	CPanel:ToolPresets( "hydraulic", ConVarsDefault )

	CPanel:KeyBinder( "#tool.hydraulic.controls", "hydraulic_group" )

	CPanel:NumSlider( "#tool.hydraulic.addlength", "hydraulic_addlength", -1000, 1000 )
	CPanel:ControlHelp( "#tool.hydraulic.addlength.help" )

	CPanel:NumSlider( "#tool.hydraulic.speed", "hydraulic_speed", 0, 50 )
	CPanel:ControlHelp( "#tool.hydraulic.speed.help" )

	CPanel:CheckBox( "#tool.hydraulic.fixed", "hydraulic_fixed" )
	CPanel:ControlHelp( "#tool.hydraulic.fixed.help" )

	CPanel:CheckBox( "#tool.toggle", "hydraulic_toggle" )
	CPanel:ControlHelp( "#tool.toggle.help" )

	CPanel:NumSlider( "#tool.hydraulic.width", "hydraulic_width", 0, 5 )

	CPanel:RopeSelect( "hydraulic_material" )

	CPanel:ColorPicker( "#tool.hydraulic.color", "hydraulic_color_r", "hydraulic_color_g", "hydraulic_color_b" )

end