Current focus column x, then row y. Same order as GameGrid.setActiveCell.
OptionalcurrentLast cardinal direction string (directionEnum.UP, directionEnum.DOWN, ...).
History of [x,y] coords; length capped by IOptions.rewindLimit.
Last position before activeCoords updated.
Optionalrenderedtrue after GameGrid.render.
activeCoords,prevCoords, and cellcoordsuse[x, y]→ column, then row (matrix[row][col]→matrix[y][x]).