FreeSpace 2 Mission File Format

FS2 files are simple text files defining how FS2 will 'execute' a given mission. It refers to external files for the actual assets used in the mission, including Model files and Tables.

General Format

File section headers start with the "#" character. Each file section should be separated by a blank line.

Statements start with either the "$" or "+" characters, and may last for multiple lines. Comments are indicated by ";!", and continue to the end of the line.

STRING refers to a String data. The game parses these from the ":" at the end of the flag it belongs to until the next flag begins.

XSTR is a single XSTR entry, formatted like this: XSTR("Text data", -1) . The "-1" refers to the entry in tstrings.tbl that contains the translated version.

INT is a single integer.

FLOAT is a floating point number, usually used with 6 digits after the decimal point

Sections

#Mission Info

Fields:

$Version: STRING

• contains the version number for this mission

$Name: XSTR

• contains the name of this mission. Uses tstrings.tbl for translation.

$Author: STRING

• The author's name

$Created: STRING

• The time and date that this mission was created on. Format is "MM/DD/YY at HH:MI:SS", where MM = Month, DD = Day, YY = Year, HH = Hours (24 hour format), MI = minutes and SS = seconds.

$Notes: STRING

• Contains any notes the mission designer wishes to add.

$End Notes: ??

$Mission Desc: XSTR

• Contains a short description of this mission. Uses tstrings.tbl for translation.

$end_multi_text

+Game Type Flags: INT

+Flags: INT +NebAwacs: FLOAT

+Storm: STRING +Red Alert: INT +Scramble: INT

+Disallow Support: 0 or 1

• Whether or not support ships are available on this mission

+Hull Repair Ceiling: FLOAT

+Subsystem Repair Ceiling: FLOAT

+Player Entry Delay: FLOAT

+Viewer pos: FLOAT, FLOAT, FLOAT

• FRED camera position

+Viewer orient:

       FLOAT, FLOAT, FLOAT, 
       FLOAT, FLOAT, FLOAT, 
       FLOAT, FLOAT, FLOAT

• Orientation Matrix for FRED camera

+SquadReassignName: STRING +SquadReassignLogo: STRING

• Squadron the player is reassigned to

$Skybox Model: STRING

• Which skybox model to use

$AI Profile: STRING

• Which AI profile is used

1. Sexp_variables

$Variables: ??

#Command Briefing

• Defines the Command Briefing section of the briefing. If no command briefing is required, leave this blank.

#Briefing

• Defines the Mission Briefing. Leaving this blank will cause 'no briefing' to be shown instead of a mission briefing.

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#Players

• Defines the players for the mission. At least one player must be defined.

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#Objects

• Defines all the objects in the mission and their initial state.
• This includes all ships (including the player ships), installations and other objects.
• Does not include asteroid (debris) fields.

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#Wings

• Defines all wings in the mission, friendly and hostile

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#Events

• The SEXPs that make up the Events List.

$Formula:

$Formula: ( SEXP_TEXT 
   FIRST_OPERAND
   SECOND_OPERAND
)
+Name: Event name
+Repeat Count: 1
+Interval: 1
+Chained: 30 ;! Indicates that Event is chained to the previous Event and the chain time in seconds.
+Team: 0

---

#Goals

• The mission directives

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#End

• The end of the file.