header.smbph bounding box oddities

[NoK0mm3nt]

I'm processing the header files of blueprints and have run into a odd issue with what I thought were the bounding points for the entity. They are close, but wrong. I get the data as 6 floats (2x x,y,z) from byte position 0x8 onwards.

For example, I have a test ship that is 21 x 11 x 7 (LWH), but the data in the header file seems to indicate it is 23 x 13 x 9.

Rather than just subtracting 2 from all dimensions, I jumped in to try and determine what was causing this.

A core-only blueprint (1x1x1), these values give me (-1.0,-1.0,-1.0) (2.0, 2.0, 2.0). Adding a block in any direction correctly increments/decrements the expected float.

Question

So my puzzle is, what's up with the values - why do they start at -1 and +2?

 

[Yoyoy3]

Have you been using this for a reference: https://starmadepedia.net/wiki/Blueprint_File_Formats#Header ?

 

[NoK0mm3nt]

Yes, I have - it's the basis of how it reads the data (in Python). I've confirmed it isn't an issue with how I read the data since I have checked the file in a hex editor.