ArrayStringParameters contains extra state that is used when formatting strings which isn't needed when creating parameter lists.
MakeParameters() now returns a std::array which contains only the parameter data. This simpler container is more widely available than before.
This allows cargo packets and cargo flow data to be empty if not in use, which is the case for the majority of station goods entries, and data is allocated when needed.
This reduces the initial size of a Station from 9192 bytes to 2024 bytes (on 64 bit platforms), although an allocation of 120 bytes is made for each active cargo type at a station.
Based on similar changes in JGRPP.
When drawing viewport strings, the StringID is used to determine how to draw the sign. Instead, allow the behaviour to be set by the caller with flags. This means that some of the viewport-specific strings are no longer necessary.
ViewportAddString() now returns a pointer to a string as it may not actually add the string, in which case preparing the string parameters in advance is a waste of time.
This simplifies tests for `(x & y) != y` with enum classes by reducing repetition, similar to HasBit(), and also makes the intent of the expression clearer.
Properties 11, 14 and 15 to set pylons/nowires/blocked intrinsically only support 8 station tiles.
Add new property to define all three flags for each station tile layout.
Allow using up to 256 tile layouts in property 0E or callback 24, which defines the layout to be saved into the map.
This was originally limited to 8, because station graphics above 8 referred to other station types but that was changed in 2007.
1) More efficient than using callback 14, as that needs to be checked every time a station tile is rendered.
2) The layout does not get changed when the station is changed (this may or may not be desirable!)
Using more than 256 layouts still requires callback 14.
These callbacks both select rail station tile layouts, the difference is one happens when drawing, the other happens when building. Change the names to make this clearer.
Standardises how the class index is stored in the spec, instead of relying ot the Spec structs having the same members.
This allows retrieving class_index and index without searching or using pointer arithmetic.
'cls_id' is renamed to 'class_index' to make it clearer that it is an index rather than the multichar label of the class.
Simplify AirportSpec data by storing layout information together in a vector, instead of separate arrays.
This removes manual memory management and separate count members.
The default layouts will be copied instead of always referring to the originals.
