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Question by da_player16 · Aug 20, 2014 at 09:58 AM · spriterenderer

detecting if a sprite is in front or behind another sprite

How do I detect if one sprite is being rendered in front or behind another sprite? Any help would be greatly appreciated.

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Answer by gauge2727 · Aug 20, 2014 at 10:51 AM

Don't know much about sprites here in Unity, but usually there's a "depth" field that you can establish. The lower that number the closer to the camera the sprite is, meaning it would be visible if stacked on another sprite of lower depth. If something like that doesn't exist, I would suggest using sorting layers.

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avatar image HarshadK · Aug 20, 2014 at 11:06 AM 0
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From Unity Documentation for Sprite Renderer:

A sprite’s position is given by a 2D coordinate, so there is no concept of “depth” or distance from camera when rendering.

So sorting layer and sorting order are the remaining options.

avatar image gauge2727 · Aug 20, 2014 at 06:16 PM 0
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Concept of depth in this context doesn't mean that there aren't depth layers, it means that the object is flat. There is depth functionality built into Unity in some fashion at least with GUI and Cameras, therefore I premised the possibility that the sprite system might incorporate the same system. Since basically draw order dictates depth unless specified otherwise anyway, I see no reason why they would not when so much of the functionality already exists. That said, if the method for controlling sprite render depth does not exist yet in Unity, it probably should, and I did mention sorting layers as a fall back.

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