How to remove Sprite From LayerManager?

monopolyli · November 9, 2004, 10:35pm

Hello everybody!
When I need to add Sprite to a LayerManager,
the method is .append();
but if I want to remove the Sprite from LayerManager, How should I do?
Thank you for answering my question!
Thank you!

moonknightskye · November 10, 2004, 2:17am

hi. iv read a book (MIDP game programming) that there is a method called “deleteSprite” now i dont have that book to look at it again on how to do it… i tried it on the layerManager but it is not a method of it… but i havent tried yet if it is a method of Sprite class… you should try it though… if am not busy ill reply to you later to help you… HEY GUYS! HELP THIS GUY OUT! ;D

davidaprice · November 10, 2004, 7:34am

Check the MIDP 2.0 JavaDocs: LayerManager has a method ‘remove’ to remove a Layer from it (remember that Sprites and TiledLayers are both Layers).

moonknightskye · November 10, 2004, 7:42am

david… i tried that method

this is in the javadoc:
layerManager.remove(Layer 1);

Layer 1 means the index of the layer I want to remove…

i tried this one a few weeks ago but it failed…
layerManager.remove(2);

if my sprite is at layer 2

i dunno. pls check it again… I’LL just reply if i have time

davidaprice · November 11, 2004, 6:16am

No, that’s not a number ‘1’, that’s a letter ‘l’. I.e. you don’t call:
layerManager.remove(2);
but instead you call:
layerManager.remove(mySprite);

If you’ve got Forum Nokia’s “Nokia Developer Suite for J2ME 2.2”, have a look at MIDlet ‘Hawk’ in directory midp_2_0_examples (especially see method ‘tick’ of class ‘HawkCanvas’). You’ll see that fired missiles are added using method ‘insert’ and removed using method ‘remove’. This works for me both in various emulators and in my Nokia 6600.