AGN (FS2002/FS2004)

Applicable
MS Flight
FSXA
FSX
FS2004
FS2002

This document describes the FS2002 and FS2004 format for autogen (AGN) files. Each file ends with 24 bytes of zero padding.

Header

int32 percentage buildings with 1-2 floors (range 0 - 20)
int32 percentage buildings with 3-5 floors (range 0 - 20)
int32 percentage buildings with 6-8 floors (range 0 - 20)
int32 percentage buildings with 9-12 floors (range 0 - 20)

int32 number of houses
int32 number of vegetation areas
float vegetation area

int32 building texture length
string building texture with extension (if building texture length > 0)

int32 vegetation class 1
int32 vegetation class 2
int32 percentage vegetation class 1 (range 0 - 100)
int32 maximum vegetation density (range 0 - 100)
float vegetation class 1 minimum height
float vegetation class 1 maximum height
float vegetation class 2 minimum height
float vegetation class 2 maximum height

Vegetation class

The following vegetation classes are available:

1. Deciduous
2. Coniferous1
3. Coniferous2
4. Shrub wet
5. Shrub dry
6. Palm trees

Buildings

For each building the following data is specified:

float x position of first point
float y position of first point
float x direction to second point
float y direction to second point
float x offset to third point
float y offset to third point

The x and y coordinates are given as offset from the middle of the LOD13 square (range -0.5 till 0.5).

Vegetation

For each vegetation rectange the following data is specified:

float x position of first point
float y position of first point
float x offset to third point
float y offset to third point

The x and y coordinates are given as offset from the middle of the LOD13 square (range -0.5 till 0.5).

FS2004 only

The following sections of the AGN file are for FS2004 only. They are only read if the FS2004 header has a value greater than zero.

int32 FS2004 header

Row houses

int32 row house texture length
string row house texture with extension (if row house texture length > 0)
int32 number of row houses

For each row house the following information is specified:

float x position of first point
float y position of first point
float x direction to second point
float y direction to second point
float x offset to third point
float y offset to third point

The x and y coordinates are given as offset from the middle of the LOD13 square (range -0.5 till 0.5).

Library objects

int32 number of library object guids

For each GUID the following information is specified:

guid GUID (16 bytes long)
int32 number of objects

For each object the following information is specified:

float x position of first point
float y position of first point
float x direction to second point
float y direction to second point
float x offset to third point
float y offset to third point

The x and y coordinates are given as offset from the middle of the LOD13 square (range -0.5 till 0.5).