AcresFieldMarks.h#

Acres/Source/Acres/AcresFieldMarks.h Generated

Marks of field work on the 25 cm cells of the farm, shared by the game and ACRES Core. Engine-free.

The farm keeps the ruts, the work flags and the look of field work in sparse maps with a world cell as the key: the cell (floor(X / 0.25 m), floor(Y / 0.25 m)) in Unreal world metres (X east, Y south). The game (FAcresFarmRuntime::Work) and ACRES Core (FAcresFarmState::Work) mark the same cells for the same strip, because the two use the walk of this file. ACRES Core has the frame east, north, up: it gives the walk the strip with the sign of Y and of the forward Y component changed.

FFarmDigest is the digest of the farm state that the two programs compute with the same function, for the cross-check of a session (Tools/SimControl/check_region_field_work.py).

Name	Type	Unit	Default	Description
`MarkCellM`	`constexpr double`	m	`.25`	Cell size of the rut map and of the field work map, m.
`MarkTilled, MarkSeeded, MarkSprayed`	`constexpr uint8_t`			Field work flag bits of a cell: tilled, seeded, sprayed (FAcresFarmRuntime::WorkTilled and the others).

ForEachStripCell#

Visits the cells below a strip of field work.

The walk goes along the strip and across it in steps of 12.5 cm (half a cell), so that no cell below the strip is skipped. It can visit a cell more than one time (four times at most).

Argument	Description
`Width`	Width across the heading, m.
`Length`	Length along the heading, m.
`Visit`	Called with the cell key (int X, int Y) of each step.

template <class FVisit> void ForEachStripCell(double X, double Y, double ForwardX, double ForwardY, double Width, double Length, FVisit&& Visit) ;

FFarmDigest#

struct FFarmDigest

64-bit digest of farm state (FNV-1a over the bytes of the values, in the sequence of the calls).

The digest of the regional farm state has three parts in this sequence. Part 1: for each regional crop patch with a crushed or a harvested sample, in ascending ordinal: the ordinal (uint32), the crushed mask and the harvested mask (uint16 each). Part 2: for each worked cell, sorted by X key and then by Y key: the two keys (int32 each) and the work flags (uint8). Part 3: for each field id from 0 to 200, the tilled, the seeded and the sprayed area as a count of cells (uint32 each: the area divided by 0.0625 m2 and rounded). The rut depths are not in the digest: ACRES Core keeps them as float and the game deepens a cell only in steps of more than 0.1 mm.

FFarmDigest::Add#

Adds the bytes of a buffer.

void Add(const void* Data, size_t Size) ;

FFarmDigest::AddValue#

Adds the bytes of one value of a plain type (little-endian on the machines of ACRES).

template <class T> void AddValue(T V) ;