Commandos2&3 Y64 File Structure Table

Commandos2&3 Y64 File Structure Table

Arranged by F.R.C.

Data Area	Data Block	Sub Data Block	Data Section	Data	Data Type	Length	Description	Sample Data
Header DA	Identifying DB			Identifying Sign	String	6	Fixed	464344450000(FCDE)
				Version Sign	Int16	2	Commandos Version. 2 in  Comm2, 3 or 4 in Comm3.	0200/0300,0400
			Comment DS			40/105	40 Bytes in Comm2, 105 Bytes in Comm3.
	Palette DB 0		Y DS 0			16	Fixed. This block contains Y values. Each DS is formed by a increasing sequence of Y values.
		...... 16*16 = 256 in total
	Palette DB 1		Cb DS			32	This block is formed by a increasing sequence of Cb values.
	Palette DB 2		Cr DS			32	This block is formed by a increasing sequence of Cr values.
	Info DB for Angles of View		Number DS	Number of Views	Int32	4	This indicates the number of angles of view.	04000000
				Number of Pics	Int32	4	This indicates the number of pictures of each view.	02000000
			Address DS	Pic Address	Int32	4	The starting address of  View 00, Pic 00	98010000
				Pic Address	Int32	4	The starting address of  View 00, Pic 01	A4210B00
				Pic Address	Int32	4	The starting address of  View 01, Pic 00	F01D1100
				...... Pic Addresses: total number is defined by Number DS
Picture DA 0	Info DB			Zoom Layer Number	Int32	4	This indicates the layer number in zooming.	00000000
				Pic Width	Int32	4	Width of the picture.	29040000
				Pic Height	Int32	4	Height of the picture.	E1020000
				Number of Pic Block	Int32	4	This indicates the number of Picture DBs(including  extras, excluding nulls).	CC000000
				Number of Extra Pic Block Index	Int32	4	This indicates the numbers of extra Picture DB index.	00000000
	Block Locating DB	Index Table SDB		Index / Address	Int16	2	This is the index/address table to locate Picture DBs on the map. Index 0xFFFF stands for a null block filled with things such as water.	0000,0100
				...... Index: total number is defined by Pic Width and Pic Height
		Extra Index Table SDB	Extra Index DS	Unknown Sign	Int32	4	Fixed	00000000
				X Index	Int32	4	The horizontal index in Picture DB's size.	09000000
				Y Index	Int32	4	The vertical index in Picture DB's size.	09000000
				Index / Address	Int32	4	The Picture DB's index/address.	59070000
			...... Extra Index DS: total number is defined by Number of Extra Pic Block Index
	Picture DB			Separator	Int64	8	Usually 0xFFFFFFFFFFFFFFFF, but sometimes it turns to be 0xFFFFFFF8F8F8F8F8.	FFFFFFFFFFFFFFFF
		Picture SDB	DS 0	Middle Digits		4bits	To generate a pointer, these bits should be put directly in Digit 7 to Digit 4. But first you should swap the two bytes of the DS0 as they are a int16 in little-endian. They are part of the pointers to Palette Y(7-0).	1000.b
				...... 4*4bits = 2 Bytes in total
				Unknown Sign		2	Fixed	0000
			DS 1	High Digits		10bits	To generate a pointer, these bits should be put directly in Digit 17 to Digit 8. But first you should reverse each 4 bytes of the DS1 as they are considered to be a Int32 in Comm2.exe. They are the pointers to Palette Cb(17-13) and Cr(12-8).	1110101001.b
				...... 16*10bits = 20 Bytes in total
			DS 2	Low Digits		4bits	To generate a pointer, these bits should be put directly in Digit 3 to Digit 0. But first you should reverse each 4 bytes of the DS2 as they are considered to be a Int32 in Comm2.exe.They are part of the pointers to Palette Y(7-0).	0000.b
				...... 64*4bits = 32 Bytes in total
		...... 8*8 Picture SDBs in total
	...... Picture DBs: total number is defined by Number of Pic Block
	Nothing/Unknown					0 / 6, Uncertain	6 Bytes in version 3, very long in version 4	14FF00000000
...... Picture DAs: total number is defined by Number DS

 

Notice:

1. All numerical data types are in little-endian.

2.In the items with "/", names in the right is for Commandos 2, and names in the right is for Commandos 3.

3.When generating the Palette, select v0,v1,v2 from position n0,n1,n2 in Palette DB 0,1,2.

(v0,v1,v2) is a color vector in the YCbCr space, you can find the conversion formula as follows:

R = Y + 1.402 * (Cr - 128)
G = Y - 0.34414 * (Cb - 128) - 0.71414 * (Cr - 128)
B = Y + 1.772 * (Cb - 128)
 

Y = 0.299 * R + 0.587 * G + 0.114 * B
Cb = -0.1687 * R - 0.3313 * G + 0.5 * B + 128
Cr = 0.5 * R - 0.4187 * G - 0.0813 * B + 128
 

Notice that these values may be out of the range[0,255], so you may need to replace some of them with 0 or 255.

The index(pointer) of the color in the Palette is (n1 << 13) Or (n2 << 8) Or n0.

 

Reference:

[1]invox4C2_3keyfiles.doc, invox, 2006