NML:Block syntax

NewGRF Meta Language

Preface

Getting started

Graphics files

Blocks

Units

Expressions

Elementary values

Builtin functions

Language files

Lists of props, vars and CBs

Warnings

Additional references

NewGRF compatibility

Deprecated syntax

Changes from NML 0.2 to 0.3

Changes from NML 0.3 to 0.4

Changes from NML 0.4 to 0.5

Vehicles, Stations, Canals, Bridges, Towns, Houses, Industries (Tiles), Cargos, Airports+Tiles, Objects, Railtypes, Roadtypes, Tramtypes, Terrain

NML Tutorial

Block Syntax

GRF

• GRF parameters

Item

• Property
• Graphics
• Livery override

Realsprites

Recolour sprites

Template

Spriteset

Spritegroup

Spritelayout

Tilelayout

Switch

Produce

Random switch

Cargotable

Railtypetable / Roadtypetable / Tramtypetable

If/else

While

Error

Disable items

Deactivate other NewGRFs

Testing for other NewGRFs

Overriding vehicles in other NewGRFs

Sprite replacement

• Replace TTD sprites
• Replace new sprites
• Add font glyphs

Alternative (32bpp) sprites

Town names

• Town names parts

Snow line

Parameter assignment

Setting base costs

Sorting vehicles in the purchase list

In the next sections you'll often see a word enclosed by the less-than and greater-than symbols. These words should not be written literally, instead they reference to another block/item you should put there. The following words will be used:

<literal-string>

A string enclosed by quotes, for example "this is a literal string"

<string>

A string defined in the language file, for example string(STR_GRF_NAME)

<expression>

An expression, this can be a computation or single value constructed using <number>, <float>, <parameter>, <variable>, <function-call>

<ID>

The name of an item or block. IDs should start with a letter or underscore. The rest of the ID may consist of letters, underscores and numbers.

If something is enclosed by square brackets [] it's optional.