Thanks for the replys guys.
I'm camera picking to determine which square on the 8x8 grid is being acted on (and that bit's working fine).
Thanks for the info on entityparent and tformpoint - I'll have a play with them tonight and see how it goes.
Stevie G - Will positionentity X,1,Z work if the plane is pointing towards you at a 45 degree angle for example? (ie to get the piece 1 unit above the ground but perpendicular to it, it would need to go a little bit up and a little towards you, not just 1 unit straight up)
I'm camera picking to determine which square on the 8x8 grid is being acted on (and that bit's working fine).
Thanks for the info on entityparent and tformpoint - I'll have a play with them tonight and see how it goes.
Stevie G - Will positionentity X,1,Z work if the plane is pointing towards you at a 45 degree angle for example? (ie to get the piece 1 unit above the ground but perpendicular to it, it would need to go a little bit up and a little towards you, not just 1 unit straight up)