Moving Grid System

[azqjanna]

Your grid needs to be based on some part of the ship instead of the world itself. This means all your grid math has to be done in an object space.

Long read but a full explanation of how and why this math works:
Cube Rotator Mindset

After that you might be able to use GridPlacer. Of course I could assist you if you wanted to use it.

GridPlacer: Highly-featured module for part placement, rotation, and snapping to grid

Grid Placer In many Roblox games there is a need to give the player a tool for placing objects such as buildings, units, furniture, or voxels. There are many tutorials for how to get the 3D position of the player’s mouse and directly place an object at this point. This is sometimes enough for a purely uniform grid-based building system similar to Minecraft. Usually however, there are several features the developer wants that are much more difficult to implement, such as: Alignment of the plac…