removeChild from stage

jack0088

I have several Sprites inside

stage.__children["userdata ..."]

and they are nested in each other... like groups that are holding its children. Also there are Self.References added to

stage["name_xyz"]

that are pointing to each "group" and to each nested "child" inside such a group.

I want to have the ability to delete my groups and the children - remove them from memory and the stage object.
Can I do this somehow through the Self.References? eg.

stage:removeChild( stage.RECT )

? When I try to do this this (and I tried a lot other things too) then I get error: The supplied Sprite must be a child of the caller.
stack traceback

Here is the content of stage object:

Value = { | userdata: 0x101d6d420 = { | | __parent = {} -- Value (self reference) | | Ebene_1 = { | | | __parent = {} -- Value.userdata: 0x101d6d420 (self reference) | | | __children = { | | | | userdata: 0x101ddc960 = { | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1 (self reference) | | | | | Obj2 = { | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960 (self reference) | | | | | | __children = { | | | | | | | userdata: 0x101d2e2c0 = { | | | | | | | | __userdata = "userdata: 0x10625a928" | | | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj2 (self reference) | | | | | | | } | | | | | | } | | | | | | __userdata = "userdata: 0x10625a3c8" | | | | | } | | | | | __userdata = "userdata: 0x10622ed68" | | | | | Obj1 = { | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960 (self reference) | | | | | | __children = { | | | | | | | userdata: 0x101d2b1c0 = { | | | | | | | | __userdata = "userdata: 0x10622cb08" | | | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj1 (self reference) | | | | | | | } | | | | | | } | | | | | | __userdata = "userdata: 0x10623ca88" | | | | | } | | | | | __children = { | | | | | | userdata: 0x101d23f50 = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj1 (self reference) | | | | | | userdata: 0x101d2e1b0 = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj2 (self reference) | | | | | } | | | | } | | | } | | | __userdata = "userdata: 0x10623e398" | | | RECT = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960 (self reference) | | } | | __userdata = "userdata: 0x10623e358" | | __children = { | | | userdata: 0x101d2b470 = {} -- Value.userdata: 0x101d6d420.Ebene_1 (self reference) | | } | } | Obj2 = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj2 (self reference) | __userdata = "userdata: 0x106225d28" | Obj1 = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960.Obj1 (self reference) | Ebene_1 = {} -- Value.userdata: 0x101d6d420.Ebene_1 (self reference) | RECT = {} -- Value.userdata: 0x101d6d420.Ebene_1.__children.userdata: 0x101ddc960 (self reference) | __children = { | | userdata: 0x101d6d420 = {} -- Value.userdata: 0x101d6d420 (self reference) | } }

the structure is actually like:

stage Ebene_1 RECT Obj1 Obj2 Ebene_1 <- Self.Reference RECT <- Self.Reference Obj1 <- Self.Reference Obj2 <- Self.Reference

But when adding Self.References the whole stage object looks weird... I use this function for adding:

function selfreferencing( t ) for k,v in pairs( t ) do if string.find(tostring(k), "^[^\_]") then stage[k] = v selfreferencing( v ) end end end selfreferencing( stage.__children )

atilim

Hi,

I don't understand exactly but if you want to remove RECT from its parent you should call:

RECT:getParent():removeChild(RECT)

or more easily:

RECT:removeFromParent()

In your case, the line:

stage:removeChild(stage.RECT)

doesn't work because RECT's parent is Ebene_1, it's not stage.

jack0088

Not only from the parent. I want remove it completely from stage hierarchy.
I want remove RECT from its parent, from stage and also everything that was inside RECT.
Your suggestion removes the object from screen. I cannot longer see it. but it is still in the memory and in the stage hierarchy... How to remove everything at all?

this is whats left inside stage hierarchy:

Value = { | Obj2 = { | | __parent = { | | | Obj2 = {} -- Value.Obj2 (self reference) | | | __userdata = "userdata: 0x10622edb8" | | | Obj1 = { | | | | __parent = {} -- Value.Obj2.__parent (self reference) | | | | __children = { | | | | | userdata: 0x104e73d60 = { | | | | | | __userdata = "userdata: 0x10623cf78" | | | | | | __parent = {} -- Value.Obj2.__parent.Obj1 (self reference) | | | | | } | | | | } | | | | __userdata = "userdata: 0x10623cac8" | | | } | | | __children = { | | | | userdata: 0x104e715a0 = {} -- Value.Obj2.__parent.Obj1 (self reference) | | | | userdata: 0x104e78fa0 = {} -- Value.Obj2 (self reference) | | | } | | } | | __children = { | | | userdata: 0x104e81820 = { | | | | __userdata = "userdata: 0x10625a9c8" | | | | __parent = {} -- Value.Obj2 (self reference) | | | } | | } | | __userdata = "userdata: 0x10625a468" | } | __userdata = "userdata: 0x106225d28" | Obj1 = {} -- Value.Obj2.__parent.Obj1 (self reference) | RECT = {} -- Value.Obj2.__parent (self reference) | Ebene_1 = { | | __parent = { | | | __parent = {} -- Value (self reference) | | | Ebene_1 = {} -- Value.Ebene_1 (self reference) | | | __userdata = "userdata: 0x10623e3a8" | | | __children = { | | | | userdata: 0x104e84880 = {} -- Value.Ebene_1 (self reference) | | | } | | } | | __children = {} | | __userdata = "userdata: 0x10623e3e8" | | RECT = {} -- Value.Obj2.__parent (self reference) | } | userdata: 0x104e76ad0 = {} -- Value.Ebene_1.__parent (self reference) | __children = { | | userdata: 0x104e76ad0 = {} -- Value.Ebene_1.__parent (self reference) | }

atilim

In your case you should do

stage.RECT:removeFromParent() stage.RECT = nil collectgarbage()

If RECT's children cannot be reached from a global variable, RECT and all of its children will be deleted from memory.

Edit: After you call stage.RECT:removeFromParent(), RECT is not at the stage hierarchy anymore.

jack0088

I've also tries something similar to this:
And hoped it would remove RECT and every Sprite nested inside it (Obj1, Obj2).

function del( t, key ) for k,v in pairs( t ) do if tostring(k) == key then local p = v.__parent   t[k] = nil   del( p, key ) end end end del(stage, "RECT")

jack0088

still no success. it removes the self.refenrence but not all completely. see stage content:

Value = { | userdata: 0x101d6d420 = { | | __parent = {} -- Value (self reference) | | Ebene_1 = { | | | __parent = {} -- Value.userdata: 0x101d6d420 (self reference) | | | __children = {} | | | __userdata = "userdata: 0x10623e3e8" | | | RECT = { | | | | Obj2 = { | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT (self reference) | | | | | __children = { | | | | | | userdata: 0x101d23ef0 = { | | | | | | | __userdata = "userdata: 0x10625a9c8" | | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj2 (self reference) | | | | | | } | | | | | } | | | | | __userdata = "userdata: 0x10625a468" | | | | } | | | | __userdata = "userdata: 0x10622edb8" | | | | Obj1 = { | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT (self reference) | | | | | __children = { | | | | | | userdata: 0x101d2a890 = { | | | | | | | __userdata = "userdata: 0x10623cf78" | | | | | | | __parent = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj1 (self reference) | | | | | | } | | | | | } | | | | | __userdata = "userdata: 0x10623cac8" | | | | } | | | | __children = { | | | | | userdata: 0x101d81bd0 = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj1 (self reference) | | | | | userdata: 0x101df3340 = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj2 (self reference) | | | | } | | | } | | } | | __userdata = "userdata: 0x10623e3a8" | | __children = { | | | userdata: 0x101d8c2a0 = {} -- Value.userdata: 0x101d6d420.Ebene_1 (self reference) | | } | } | Obj2 = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj2 (self reference) | __userdata = "userdata: 0x106225d28" | Obj1 = {} -- Value.userdata: 0x101d6d420.Ebene_1.RECT.Obj1 (self reference) | Ebene_1 = {} -- Value.userdata: 0x101d6d420.Ebene_1 (self reference) | __children = { | | userdata: 0x101d6d420 = {} -- Value.userdata: 0x101d6d420 (self reference) | } }

jack0088

can I send you the script, so you can check this quick? please atilim!

atilim

ok, send me please.

atilim

and as a side note, the fields starting with "__" shouldn't be used or changed. they are internal to Gideros.

jack0088

email..