Understanding how z position within game objects affect the overall game rendering

[svprdga]

Hi all, I have a game with:

• A parallax GO, which consists in three layers
• A player GO

Within the parallax GO, each layer is set to 0, 1 and 2 Z positions. In order to make my player to be drawn on top of the parallax, I must set it at least in the 6th Z position…why is that? How does Z positions within game objects affect the real world Z position?

Why the player is not drawn above the parallax if I put it in the 3 Z position, why from the 6th?

Another weird thing is that, if I put the parallax layers with a negative Z position…they are not rendered, just a black background…why?

And another more strange thing, if I run the game within the parallax collection the objects are rendered in the correct order, but if I run it from the main collection they are completely disordered!

Thanks.

[Alex_8BitSkull]

In the default render script, z must be between -1 and 1. Values outside of that will not be rendered. You can modify the render script if you wish to change the range.

Only Range [-1,0,1] Works With Z Order Of Objects?

Hi, We are having an issue with the Z order of objects. It seems the only Z order that works is in the range [-1,0,1]? Please download the entire project on GitHub below: If you run the demo, you will see the issue on the second title screen. (the button texts are over the screen fading sprite) Let us know how to fix this, thanks! http://fallenangelsoftware.com/stuff/files/RedLightRacer/RedLightRacer.zip P.S. - We are using the Linux version of Defold(if that matters). J.

Z values are cumulative. If you have a game object with z 0.5, and inside that game object a sprite with z of 0.75, then the sprite will not be rendered (0.5+0.75=1.25 > 1).

[svprdga]

Ok…I have done the following arrangements:

Parallax layer 0 - 0 Z
Parallax layer 1 - 0.1 Z
Parallax layer 2- 0.2 Z

Each one of the above game objects is in a collection called background, which is set in the main collection this way:

background - 0 Z
player - 0.3 Z

With your explanation and the values I have set, the player should be visible, but is drawn between the layer 1 and layer 2…

EDIT

I have removed the background collection and I have add it again to the main collection. For some reason, and with the same setup, now it works. So issue fixed, thank you!