3D Grid Placement

InsidiousJ

I'm trying to position LEGO-like bricks on a 3D grid according to the player's raycast and the size of the brick. Bricks with dimensions of even numbers (2, 4, 6, 8...) snap to the grid perfectly, but bricks with dimensions of odd numbers don't. How should I align these bricks correctly based on the player's raycast and the brick's dimensions? What kind of offset would I implement?

new_position = raypoint.snapped(Vector3(0.9, 0.3, 0.9))

award

How are you modeling your LEGO-like bricks? If you move the origin in your model, would that solve the issue?

InsidiousJ

award I'm modeling them in Blender. Later I might just generate the mesh in-engine, but for now I'm just using simple blender models

award

Then in Blender, move your origin here for each brick:

InsidiousJ

award That fixes the alignment problem, however bricks do not center themselves. If I click here, it will snap to the grid, but away from the actual position the raycast's collision point is in. Should I use a gridmap or something like that to center bricks to the player's raycast?

award

Maybe try working with floor or ceiling rather than snapped?

Something like new_position = (raupoint / Vector3(0.9, 0.3, 0.9)).ceil() * Vector3(0.9, 0.3, 0.9)

That way you're always snapping in a particular direction, rather than just to the closest point.

InsidiousJ

award Worked like a charm alongside the new origins for the bricks. Thank you so much for your help!