Stargunner Sprites Format

Stargunner Sprites Format

There is no image of a tileset in this format — upload one!

Format type	Tileset
Hardware	VGA
Max tile count	65535
Palette	External
Tile names?	No
Minimum tile size (pixels)	Unknown
Maximum tile size (pixels)	65535×65535
Plane count	1
Plane arrangement	Linear
Transparent pixels?	No
Hitmap pixels?	No
Metadata?	None
Supports sub-tilesets?	No
Compressed tiles?	No
Hidden data?	No
Games	Stargunner

The Stargunner Sprites Format is used by Stargunner to store the graphics used to draw various objects.

Signature

There is no signature, but careful parsing of the fields to ensure they have expected values can allow files to be detected. There is no data trailing the pixelData field, so if this field ends right at the end of the file, it is highly probable the file is in this format.

File format

The file begins with short header, followed by index table and raw pixels data

Header

Data type	Name	Description
UINT32LE	DWORD1	Unknown. same as NUM
UINT32LE	PAYLOAD	Length of pixel data
UINT32LE	NUM	Number of sprites in this file

Sprite descriptors

Just after the header there are NUM of sprite descriptors. Every sprite descriptor is 40 bytes long

Data type	Name	Description
UINT32LE	INDEX	Index number of this sprite
UINT32LE	W	Width of this sprite in pixels (only low 16 bits are set)
UINT32LE	H	Height of this sprite in pixels (only low 16 bits are set)
INT32LE	UNK1	Unknown - roughly is W/2
INT32LE	UNK2	Unknown - roughly is H/2
INT32LE	UNK3	Unknown - may be negative
INT32LE	UNK4	Unknown
UINT32LE	OFFSET1	Offset to the data in the payload area
UINT32LE	OFFSET2	Unknown
UINT32LE	OFFSET3	Unknown

Payload area

Just after the end of the sprite descriptors is the payload area. It starts at 3*sizeof(UINT32) + 40*NUM from the beginning of the file. Every offset in the sprite descriptor is relative to the payload area. Sprites are stored as 8-bit play VGA image of W*H size