lowlines

Nitro Animation Resource (NANR)

Category: Nintendo DS

Description: Common animation format used in Nintendo DS games.

Author: lowlines & Garyong/Barubary/Aygox

Filename: nanr.xml

Size: 4.85 KB

Date Modified: 07 November 2019

• Nitro Header

  • Type	Name	Offset	Size	Value	Description
    	Magic Stamp	0x0000	4	0x524E414E	Stamp (RNAN) "Nitro ANimation Resource".
    u32	Constant	0x0004	4	0x0100FEFF
    u32	File Size	0x0008	4
    u16	Header Size	0x000C	2	0x10
    u16	# Sections	0x000E	2

• Animation BaNK Section (ABNK)

  • Type	Name	Offset	Size	Value	Description
    	Magic Stamp	0x0000	4	0x4B4E4241	Stamp (KNBA) "Animation BaNK".
    u32	Section Size	0x0004	4
    u16	# Banks	0x0008	2
    u16	# Total Frames	0x000A	2
    u32	Bank Block Offset	0x000C	4	0x18	Relative to start of Section + 0x8.
    u32	Header Block Offset	0x0010	4		Relative to start of Section + 0x8.
    u32	Data Block Offset	0x0014	4		Relative to start of Section + 0x8.
    u64	Padding	0x0018	8	0x00
    Bank Block - see below
    u8	Padding		1	0x00
    Header Block - see below
    u8	Padding		1	0x00
    Data Block - see below

  • Bank Block (times # Banks)

    • Type	Name	Offset	Size	Value	Description
      u32	# Frames	0x0000	4
      u16	Data Type	0x0004	2		0 = 4 bytes 1 = 16 bytes 2 = 8 bytes
      u16	Unknown	0x0006	2	0x1?
      u32	Unknown	0x0008	4	0x2?
      u32	First Header Offset	0x000C	4		Relative to start of Header Block.

  • Header Block (times # Banks)

    • Type	Name	Offset	Size	Value	Description
      u32	Data Offset	0x0000	4		Relative to start of Data Block.
      u16	Frame Duration	0x0004	2		~= (1/60)s?
      u16	Constant	0x0006	2	0xBEEF

  • Data Block (times # Banks)

    • Type	Name	Offset	Size	Value	Description
      u16	Cell Index	0x0000	2
      Type 0 - Normal
      u16	Garbage	0x0002	2		Last frame will be 0xCCCC.
      Type 1 - Transform/Displacement
      v16	Transform	0x0002	10
      s16	X Displacement	0x000C	2
      s16	Y Displacement	0x000E	2
      Type 2 - Displacement
      u16	Constant	0x0002	2	0xBEEF
      s16	X Displacement	0x0004	2
      s16	Y Displacement	0x0006	2

    • Transform
      • see GBATek http://nocash.emubase.de/gbatek.htm#lcdiobgrotationscaling
      • Details
        The transform is usually of this format:
        {B, A, C, D, E}, with:
        E = 0
        A,B,C,D as used in the formula in the bottom of this section in GBATEK
        However C and E can be 0xFFFF sometimes (pokemon B/W file 505, pikachu), which seem to be some special marker. Not sure yet what they mean.
• Label Section (LABL)
  • See NCER Format.
• UEXT Section (UEXT)
  • See NCER Format.