NML:Graphics
Vehicles, Stations, Canals, Bridges, Towns, Houses, Industries (Tiles), Cargos, Airports+Tiles, Objects, Railtypes, Roadtypes, Tramtypes, Terrain
A graphics block must be placed in an item-block. It allows to define the graphics for a particular item, as well as various callbacks. Callbacks are used to define various things at run time, based on information (variables) of the item itself. This provides a much greater degree of flexibility than setting properties. An example (using fictional callback names):
graphics {
callback_a: switch_a;
callback_b: return 42 + some_var;
default: some_spritegroup;
}
The callbacks that are available differ per feature, refer to the feature-specific pages for more information. The 'default'-callback is usually used to resolve the graphics. For each callback a return value may be specified, in the same way as for switch-blocks. Note that all callbacks have to be defined in a single graphics-block.
