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spritecoronasdkzbuffer

What is the proper way to control Z-depth in Corona SDK?

What is the proper way to control Z-depth in Corona SDK?

It doesn't seem like sprites inherenty have any Z information being stored.

Solution

  • They have actually...

    All sprites belong to a group (even if it is the default group).

    The z order is the group index (ie: first sprite in the group get rendered first, and so on).

    You cannot change that to a arbitrary value, since sprites cannot share a slot, neither there can be "holes" on the group array.

    But there are the functions sprite.toFront() and sprite.toBack()

    I personally create more groups to control ordering, one of my apps is a snowglobe, I've create three groups, one for the background, one for the foreground, and between them a layer with the snow, this way I don't have to do background.toBack() and foreground.toFront() every frame.