Rendering Mobs as Sleeping

[spiritfilled]

Is there a way to make mobs appear lying down, since dinnerbone tag can make them upside down, is there a way to reverse rendering Z and Y to make mobs appear lying on their belly or on their back.

The concept is I want them to stun living entity to sleep (with a sleep render)

someone has done it using a command block by transporting entities to bed, but i cant seem to replicate it in java (still don't know how)

here is the link to the video

https://www.youtube.com/watch?v=qkFtoF3uB6w

thanks :3

[spiritfilled]

im on 1.12.2 there is no startSleeping... Im still checking where dinnerbone function is and player sleep too... 

[Luis_ST]

1.12.2 is no longer supported on this forum.
Please update to a modern version of Minecraft to receive support.

[spiritfilled]

Oh, sorry i didnt know about that... this was a project of mine way before so it's a bit outdated. I'll work on newer versions after this. thanks anyways

[spiritfilled]

btw ive found it. GlStateManager.rotate in Render<>