remove all notes with same name - lua

Question

Hello I'm am using Marmalde Quick, so lua to create a game.
In my game when a park of the screen in tuched it creates a new note and add that note to physics.
function bgTouched(event)
if (director:getCurrentScene() == gameScene) then
if (gameState == gameStates.playing) then
if event.phase == "began" then
addToRoundScore()
if bodyType == 0 then
-- Create object1
b = director:createSprite(event.x, event.y, "textures/beachball.png")
b.name = "ball"
b.strokeWidth=0
b.xAnchor = 1; b.yAnchor = 0 -- test non-0 anchor point for circle
physics:addNode(b, {radius=40})
elseif bodyType == 1 then
-- Create object2
b = director:createSprite(event.x, event.y, "textures/crate.png")
b.name = "crate"
b.strokeWidth=0
b.xAnchor = 0; b.yAnchor = 0.5 -- test non-0 anchor point for rectangle
b.xScale = 2; b.yScale = 1 -- test different scale
physics:addNode(b, {} )
elseif bodyType == 2 then
-- Create obejct3
b = director:createSprite(event.x, event.y, "textures/triangle.png")
b.name = "tri"
b.xAnchor = 0.5; b.yAnchor = 1 -- test non-0 anchor point for polygon
physics:addNode(b, {shape={0,0, 95,0, 48,81}} )end
b.rotation = 22.5
bodyType = (bodyType + 1) % 3
end
end
end
end
bg:addEventListener ("touch", bgTouched)
when an event happens I want to remove all the notes created, I tried using the following:
physics:removeNode(b)
b:removeFromParent()
but this only removes the last created not I want to remove them all, is there some way to do this.
Thanks

Answer 1

If I understand right that you want to clear the nodes table before the event.phase == "began" processing where you add nodes, you could reset the physics table:
physics = {}
If other parts of code are referencing the physics node and they can't be notified that physics points to a new table, you could loop over all items of table and nil them:
for k,v in pairs(physics)
physics[k] = nil
end