TileMap4bppDrawSpec

Struct

Source: StaticTilemapLayerCache.h

Description

One drawable 4bpp tilemap layer with an origin in logical coordinates.

Entries with map == nullptr are skipped. Use any number of static layers (snapshotted together) and dynamic layers (redrawn every frame after restore).

TileMap4bppDrawSpec::projection Optional isometric/oblique basis, only present when PIXELROOT32_ENABLE_TILEMAP_PROJECTION is on. nullptr — the default, and therefore what every existing three-element aggregate initialiser ({&map, 0, 0}) keeps meaning — selects the axis-aligned Renderer::drawTileMap overload, byte for byte as before. A non-null spec selects the projected overload instead, which places, culls and marks cells through that basis (see math/Projection.h).

The member is deliberately last and default-initialised so adding it did not touch a single call site, and so the struct's layout is unchanged when the flag is off.