doom.build_player

Bakes the doomguy marine player-body sprites from the WAD's PLAY lumps: the 8-rotation stand + walk billboard atlases (doomspr_PLAY_r1..8, doomspr_PLAY_walk_r1..8) and the death frames, plus the sprq_PLAY quad. A content-generation tool run via @root::doom.build_player; uses doom.sprite_decode.