exoplanetaryAug 15, 2023
I think storing my player’s position in a view matrix may have been a mistake. This happens at around x/y 16 million. #gamedev
Show threadBryce DixonAug 16, 2023

@exoplanetary Just use doubles instead of floats! 😉

Matrices are just prone to this kind of imprecision at large distances. IMO for a chunked-voxel game storing the positions of things as hierarchical (eg: integer chunk position/index & floating point position relative to the chunk origin). It could also help speed up things like physics, too; you can easily determine which chunks you need to check collisions with for both the terrain and other entities.

Show threadexoplanetaryAug 16, 2023
@brycedixon Yep, that's the planned fix. I'm thinking I'll probably try and keep the player at (0,0,0) and move the chunks around based on that instead - that way the vertices won't get particularly wacky from the view matrix.
Show threadBryce Dixon
@exoplanetary Well, technically that's kinda what's happening, no? Either way, you're multiplying all the vertices to draw by a matrix to get them within a cube from (0,0,0) to (1,1,1); it's just a matter of conceptualizing "does the player move around the world or world around the player."
Aug 16, 2023 at 5:29amWeb