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c++cocos2d-x

Understanding cocos2d-x node positioning

I am a bit confused about how to position a CCNode. For example, I would like to position the node at the top right of the screen, but down a bit from the top. How would I do this?

I was thinking:

getCoins->setAnchorPoint(ccp(0,0));
getCoins->setPosition( ccp(0,1) );

But that didn't work.

Could someone explain how to do positioning like this?

Solution

  • In cocos2d-x, the origin (x=0, y=0) is in the bottom-left corner of screen, so X axis starts from the left side and increases to right and Y axis starts from bottom of screen and moves upward.

    The anchor point is used for both positioning and rotating an object. An anchor point ranges from between 0, 0 to 1, 1. An anchor point of 0.5, 0.5 is the center of object.

    So for example if you are placing a object with anchor point 0.5, 0.5 to 100, 100 on screen the center of object will be placed on 100, 100.

    For more details about coordinate system and anchor points check here