Commandos2&3 SEC File Structure Table

Commandos2&3 SEC File Structure Table

 

Arranged by F.R.C.

　

Data Area	Data Block	Data Section	Data	Data Type	Length	Description	Sample Data
Head DA	Identifying DB	DS 0	Version Sign	Int64	8	Fixed	01000000 01000000 / 02000000 01000000
		DS 1				Not fixed, it may exist or not exist, can be deleted	...POSTE...
		DS 2	Identifying Sign		36	Fixed	...MAP1...
	Basic Info DB		Number of Points	Int32	4	This define the amount of points	15010000
			Number of Borders	Int32	4	This define the amount of borders	47030000
			Number of Districts	Int32	4	This define the amount of districts, including special districts	A4000000
			Number of Special Districts	Int32	4	This define the amount of special districts	00000000
Main DA	Point DB	Point DS	x	Single	4	X-coordinate	EE5C0DC3
			y	Single	4	Y-coordinate	42E04543
		... Point DSs: total number defined by Number of Points The total length of the Point DB is: Number of Points * 8
	Border DB	Border DS	Start Point Index	Int32	4	Index for Start Point	00000000
			End Point Index	Int32	4	Index for End Point	01000000
			Parent District Index	Int32	4	Index for the district which the border belongs to	00000000
			Neighbor District Index	Int32	4	Index for the district with the border as a boundary between it and the Parent District. 0xFFFFFFFF represents the border is on the edge of the map	11000000
			Unknown	Int32	4	Unknown data	00000000
		... Border DSs: total number is defined by Number of Borders, and the borders of a district are in anticlockwise order. The total length of the Border DBs is: Number of Borders * 20
	District DB	District DS	n	Int32	4		05000000
			Terrain	TerrainInfo	8		00000000 14000000
			kx	Single	4	The tangent of the angle to the X-axis	00000080
			ky	Single	4	The tangent of the angle to the Y-axis	00000080
			bz	Single	4	The intercept for Z-axis	00001C42
			Unknown Data		24/16		00000000 00000000 00000000 00000000 00000000 00000000
			MinPx	Single	4	The minimum X-coordinate of the points	21300FC3
			MinPy	Single	4	The minimum Y-coordinate of the points	87564243
			MinPz	Single	4	The minimum Z-coordinate of the points	00001C42
			MaxPx	Single	4	The maximum X-coordinate of the points	8115D0C2
			MaxPy	Single	4	The maximum Y-coordinate of the points	04B65B43
			MaxPz	Single	4	The maximum Z-coordinate of the points	00001C42
			Border 0	Int32	4	Border of the district	00000000
			Border 1	Int32	4	Border of the district	01000000
			... Borders: total number is defined by n
		... District DSs: total number is defined by Number of Districts
Tail DA	Symbol DB		Symbol	Int32	4	The start of the Tail DA	32534148
	Basic info DB		Total Number of Districts	Int32	4	Total Number of Districts contained in Reseaus	6E050000
			Unknown	Int32	4	Unknown data	06000000
			Number of Reseaus in X	Int32	4	Number of Reseaus in the X direction	17000000
			Number of Reseaus in Y	Int32	4	Number of Reseaus in the Y direction	18000000
	Reseau DB	Reseau DS	Number of Districts in the Reseau	Int32	4	Number of Districts contained in the Reseau	03000000
			District Index	Int32	4	Index for the District	DC000000
			... District Index: total number is defined by Number of Districts in the Reseau
		Reseau DSs: total number is defined by Number of Reseaus in X * Number of Reseaus in Y

 

Terrain

Byte（Bit）	Name	Description	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22
0	MajorType		Land	Snow	Deep Water	Nontransparent  Water	Transparent Water
1	MinorType	Control the sound effects	Soil or Sand	Grass	Road or Deck	KWEX 294 SBEX 1400	3TE 627	Wood Bridge	CZEX 1172 KWEX 174	Snow		CZEX 1565	3TV 12	Metal Cells		Slope to Water	Water	Cobble Road
2	Unknown
3	Unknown
4(1)	MustCreep	People must creep on the district	-
4(3)	NoView	No view will be displayed in the district	-
4(4)
4(5)	IsBarrier	The district could block human view	-
4(7)	IsEnterable	People could enter the district if it's set	-
5	Darkness		0-255
5(1)	IsShadow	People will be dark when they step into a district with this attribute set	-
5(7)	IsDiggable	Commandos could dig holes in the district if set(1#, 5#)	-
6	IsBound		False		True
7	Unknown

 

 

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. Further understanding of the Commandos 2 model indicates,

A Point is a plumb line with the equation:

x = x0

y = y0

A Border is a plane between two "Point".

A District is actually a columniation with several trapezoid side, and the equation for the ceiling plane is:

z = kx * x + ky *y + bz

The floor plane is a horizontal plane. The side planes are all vertical with the horizontal plane.

A Special District is a District. One or more of its side planes are not solid, and can be distinguished with Neighbor District Index = -1 for the corresponding Borders. So, Special District is not divided from other Districts.

These names are not exact, but to avoid big changes, we still use these names.

 

Reference:

[1]invox4C2_3keyfiles.doc, invox, 2006