1. Is there a way to run something every tick from the mod class and how?

2. How can I get the client to press buttons as if they were being pressed by the keyboard (specifically A and D)

Hi

 

1. Yes there is- search for tutorials on ITickHandler.

2. Yes there is - lots of options!  For more information see

http://greyminecraftcoder.blogspot.com/2013/10/user-input.html

You can intercept the keybindings as per this sample code

http://gist.github.com/TheGreyGhost/7033821

or for a&d using the MovementInput as per this post

http://www.minecraftforge.net/forum/index.php/topic,13727.msg70723.html#msg70723

or alternatively you can just force the appropriate keyBinding to true before GameSettings.updatePlayerMoveState (GameSettings.keyBindLeft etc - see MovementInputFromOptions)

 

-TGG