OptionalanimationMV only: kind runs advancing together when the frame changes (water, waterfalls)
Optionalanimationthe layer's initial animation frame
Optionalformatwhich family; MV quadrant sheets unless 'rpgm-xp' says otherwise
OptionalframesXP only: animation stripes in the image; counted from the sheet width when omitted
OptionalindexXP only: which autotile image this sheet is, 0-7
OptionalmodeMV only: which shape table to sample; floor for slots 0-1, wall for 2-3.
'mixed' is the A4 sheet's own layout, where kind rows alternate between the
floor table (wall tops) and the wall table (wall faces); on slots 0-2 it is the
same as their default.
the raw source image: an MV A-sheet of 48px cells, or one XP autotile image
OptionalslotMV only, required: which A-family (0-3) this sheet is
OptionaltableMV only: a custom shape table, overriding mode for non-standard sheets
OptionaltableMV slot 1 (A2) only: the layer's cells hold the table tile standing above each cell, and
this set draws just that table's front-edge strip along the cell's top, as the engine
does under a table. rpgmTableEdgeCells computes those cells from the map.
One autotile source a layer draws from. MV sets name an A-sheet family; XP sets name one autotile image. A layer takes one set, or one per family slot (MV) or image index (XP), and each cell routes to the set claiming its id - the same split a multi-sheet map already uses for plain layers.