The extensions.cfg file format

■目次

• 1. 概要
• 2. Syntax
• 3. The Cari section
• 4. The Coupleri section
• 5. The Bogiei section
• 6. The Exterior section (outdated)

■ 1. 概要

The extensions.cfg file allows to define properties for individual cars, like length, axle positions and exterior objects.

The file is a plain text file encoded in any arbitrary encoding, however, UTF-8 with a byte order mark is the preferred choice. The parsing model for numbers is Strict. The file is required to be located inside the train folder and is expected to be named extensions.cfg. The file is interpreted on a per-line basis, from top to bottom.

● Car indices

All cars in the extensions.cfg are enumerated from 0 (front car) to n-1 (rear car), where n is the number of cars the train has in total, according to the train.dat file. For example, on a train with 10 cars, the front car has index 0 and the rear car index 9.

● Coupler indices

A coupler in this document refers to the space between neighboring cars. All couplers in the extensions.cfg are enumerated from 0 (front-most coupler) to n-2 (rear-most coupler), where n is the number of cars the train has in total, according to the train.dat file. Coupler index i corresponds to the coupler between the cars with indices i and i+1, so the coupler between the first two cars (0 and 1) in the train has index 0. Likewise, if a train has 10 cars, the coupler between the last two cars (8 and 9) would have index 8.

■ 2. 文法

ファイル内の各行は空(または空白)のみにすることが出来、またその行は無視され、新しいセクションの開始をマークするか、セクション内にキーと値のペアを含めることが出来ます。全てのキーと値のペアは、最後に開かれたセクションと関連付けされます。

新しいセクションを開くには、行を開始ブラケット (U+005B) で開始し、終了ブラケット (U+005D)で終了します。 カッコ内のテキストはセクション名を示し、大文字と小文字を区別しません。 行の最初と最後の空白、及びセクション名の最初と最後の空白は無視されます。従って、セクションの先頭は次の形式になります:

A key-value pair is indicated by giving the key, an equals sign (U+003D) and then the value. The key is case-insensitive. White spaces at the beginning and the end of the line are ignored, as well as in front and after the equals sign. Alternatively phrased, white spaces surrounding the key and the value are ignored. Thus, a key-value pair as the following form:

コメントは行末のどこでも使用可能です。 コメントはセミコロン (U+003B)で始まります。 コメントは存在する場合、処理される前に全ての行から削除されます。

■ 3. The Cari section

The Cari section allows to define properties specific to a certain car.

This starts the section for car i, which is an integer between 0 and n-1, where n is the number of cars the train has.

This key-value pair defines the exterior object for this car. Within the object file, the coordinate (0,0,0) (x, y, z) corresponds to the center of the car, both horizontally (x) and forward/backward (z), while y=0 corresponds to the top of the rails.

This key-value pair defines the length for this car. This overrides the length as defined in the train.dat for this particular car. If not used, this car will have the default length as defined in the train.dat.

This key-value pair defines the positions of the axles. While Rear and Front can take any values, the condition Rear < Front must hold.

With this setting, you can reverse the car in the consist. Please note that axle positions are given as if the car was not reversed.

With this setting, you can enable or disable loading sway for a specific car in the consist.

With this setting, you can control which cars remain visible from the cab, for example if your cab is not in the front car of the train. Note: This does not apply to the current driver car.

■ 4. The Coupleri section

The Coupleri section allows to define properties specific to a certain coupler.

This starts the section for coupler i, which is an integer between 0 and n-2, where n is the number of cars the train has.

This key-value pair defines the lowest and highest allowed distances between the cars, resembling a buffer and chain coupler. The condition Minimum ≤ Maximum must hold.

This key-value pair defines the optional exterior object for this coupler. Within the object file, the coordinate (0,0,0) (x, y, z) corresponds to the center of the coupler, both horizontally (x) and forward/backward (z), while y=0 corresponds to the top of the rails.

■ 5. The Bogiei section

The Bogiei section allows to define properties specific to a certain bogie. Each car is assumed to have two bogies (whether or not an object is displayed), placed at the axle points of the car.

This starts the section for bogie i, which is an integer between 0 and n-2, where n is the number of cars the train has.

This key-value pair defines the exterior object for this bogie. Within the object file, the coordinate (0,0,0) (x, y, z) corresponds to the center of the bogie, both horizontally (x) and forward/backward (z), while y=0 corresponds to the top of the rails.

This key-value pair defines the positions of the axles. While Rear and Front can take any values, the condition Rear < Front must hold.

■ 6. The Exterior section (outdated)

The Exterior section provides an easy way of adding exterior objects to the particular train. For more control on the setting of axle positions and individual car lengths, the Cari section has been introduced and should be used instead.

This starts the Exterior section.

This key-value pair can be used to set up the exterior objects for each individual car. Within the object file, the coordinate (0,0,0) (x, y, z) corresponds to the center of the car, both horizontally (x) and forward/backward (z), while y=0 corresponds to the top of the rails.