label as child of sprite positioning problem

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remover
Member

i am using v0.99rc. i have a peculiar problem.

i want to add a label to a sprite as a child and center that label on the center of the sprite. if i change the anchorpoint of the sprite and then try and position the label the result is a not centered label i.e:

sprite.anchorpoint = ccp(0,0.5);
label.position = [sprite convertToNodeSpace:sprite.position];

I've tried setting the label anchorpoint to that of the sprite but this doesn't help.

if I don't change the anchorpoint of the sprite, the label is centered as it should be.

Any pointers?

Thanks.

Posted 2 years ago #
gaminghorror
Member

There are a few things you need to consider:

First, the label is a box as well and its anchorpoint plays a role in positioning it as well. You may have to keep it in line with sprite's anchorpoint.

Then, the label scales with the text and it depends on the text alignment how to label size scales, in your case you probably want to align the text centered.

You can use [sprite contentsize] * 0.5f (pseudocode) to get the center of the sprite, now you would simply set the label's anchorpoint to [label contentsize] * 0.5f and position to 0,0 and then add it to the sprite. Whenever you change the label's content (eg text) you have to update the anchorpoint as well.

Haven't thought it through but i hope it gets you in the right direction.

Posted 2 years ago #

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