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Sprite types

• Action0 - Defines new graphics feature properties

  • Action0Vehicles - Action 0 properties common to all vehicle types
    • Action0Trains - Action 0 properties for trains
    • Action0RoadVehicles - Action 0 properties for road vehicles
    • Action0Ships - Action 0 properties for ships
    • Action0Planes - Action 0 properties for planes
  • Action0Stations - Action 0 properties for new stations
  • Action0Canals - Action 0 - Properties for canals / rivers
  • Action0Bridges - Action 0 properties of bridges
  • Action0Houses - Action 0 properties of houses
  • Action0GlobalVariables - Action 0 properties for global variables
  • Action0IndustryTiles - Action 0 properties for industry tiles
  • Action0Industries - Action 0 properties for industries
  • Action0Cargos - Action 0 properties for cargo types
  • Action0SoundEffects - Action 0 properties for new sound effects
  • Action0Objects - Action 0 properties for new objects
  • Action0Railtypes - Action 0 properties for rail types
  • Action0AirportTiles - Action 0 properties for airport tiles
  • Action0Airports - Action 0 properties for airports

  Action1 - Defines a set of real sprites

  Action2 - Defines graphics set IDs

  • Action2Vehicles - Defining set-IDs for vehicles
  • Action2Stations - Defining station set-IDs
  • Action2Canals - Defining an action2 for canals
  • Action2HousesIndustryTiles - Defining an action 2 for houses, industry tiles and object
  • Action2Industries - Defining the industry production callback
  • Action2Cargos - Defining set-IDs for cargos
  • Action2Objects - Action2 for Objects
  • Action2Railtypes - Action2 for Railtypes
  • VariationalAction2 - Variational Action 2
    • VarAction2Advanced - Advanced features of Variational Action 2
    • VarAction2Vehicles - Variational Action 2 Variables for Vehicles
    • VarAction2Stations - Variational Action 2 Variables for Stations
    • VarAction2 Towns - Variational Action 2 Variables for Towns
    • VarAction2Canals - Variational Action 2 Variables for Canals
    • VarAction2Bridges - Variational Action 2 Variables for Bridges
    • VarAction2Houses - Variational Action 2 Variables for Houses
    • VarAction2IndustryTiles - Variational Action 2 Variables for Industry and Airport Tiles
    • VarAction2Industries - Variational Action 2 Variables for Industries
    • VarAction2Cargos - Variational Action 2 Variables for cargos
    • VarAction2NewSignals - Variational Action 2 Variables for New Signals
    • VarAction2Objects - Variational Action 2 Variables for Objects
    • VarAction2Railtypes - Variational Action 2 for Railtypes
    • VarAction2AirportTiles - Variational Action 2 Variables for Industry and Airport Tiles
  • RandomAction2 - Randomized Action 2
  • Callbacks - List of available callbacks

  Action3 - Associates vehicles with graphics set IDs

  • Action3LiveryOverride - Change wagon livery to match the engine

  Action4 - Defines text strings

  Action5 - Defines specific base graphics sets

  Action6 - Modifies the contents of the following sprite

  Action7 - Conditionally skips sprites or jumps to a label

  • GameConfigFlags - Configuration flags for Action 7/9 Variable 85

  Action8 - Defines GRFID, Name and Description

  Action9 - (see action 7 above)

  ActionA - Replaces TTD base set sprites

  ActionB - Generates an error message

  ActionC - Does nothing.

  ActionD - Assigns parameters and calculates results

  • ReadingOtherGRFParameters - Reading another GRF file's parameters
  • ReadingGameSettings - Reading game configuration settings
  • GRFResourceManagement - Preventing conflicts with limited resources

  ActionE - Deactivates a NewGRF file

  ActionF - Defines new town name styles

  Action10 - Defines GOTO label for action 7/9

  Action11 - Defines new sound data

  Action12 - Load font glyphs

  Action13 - Translates GRF-specific strings

  Action14 - Static NewGRF Information (OpenTTD only)

  RealSprites - Sprites that actually get drawn on the screen

  RecolorSprites - Changing how other sprites are drawn

Graphics properties

• Palettes - Palettes used by the game
• Coordinates - Coordinates used for sprite alignement

TTD defaults

• DefaultHouseProps - Default property values for TTD's houses
• IndustryTileDefaultProps - Default property values for TTD's industry tiles
• IndustryDefaultProps - Default properties values for TTD's industries
• CargoDefaultProps - Default property values for TTD's cargo types

NewGRF commons

• Cargo classes - Commonly used cargo classes
• Cargo labels - Commonly used cargo labels
• Object classes - Commonly used object clases
• Railtype labels - Commonly used railtype labels

Misc

• Base Costs
• Vehicle Refitting
• GRF loading stages
• Storages
• String control codes
• Text IDs (TTD + TTDPatch + NewGRF defined)
• Debugging NewGRFs
• TTDPatch error codes on loading NewGRFs

Game mechanics

• Town zones