Upgrade Floats to Doubles

[digimbyte]

Tested versions

always present

System information

windows 10 - godot 4.3 stable

Issue description

Description:
Current use of 32-bit floats causes precision issues in large-scale calculations, world coordinates, and physics simulations. Switching to 64-bit doubles will solve this, improving accuracy without significantly impacting performance.

Solution:
Migrate critical math, physics, and transform systems to use doubles, allowing for more precise calculations in large environments and complex simulations.

Steps to reproduce

N/A

Minimal reproduction project (MRP)

N/A

[jss2a98aj]

This what building with precision=double is for unless I am mistaken. There is notable performance overhead among other downsides to it. As such it should only really be used for projects that actually need it.

[PaperPrototype]

yeah i think godot already supports large worlds with double precision coordinates. AFAIK it should reduce perf by about half (at least for math stuff)

[heavymetalmixer]

I think using Fixed Point numbers would be better for accuracy matters.