Hmm, the en passant pawn move is the only ranged weapon model. Everything else is melee. Someone should invent a ranged-weapons chess, where you kill pieces via line of sight.
Tabletop war gaming is filled with things like this. For example checkout the 19th century Prussian Kriegspiel branch of the tradition which is an important ancestor to D&D and modern TTRPGs more generally:
cannon: it must be able to recoil the number of squares opposite of how it range attacks. (could work linear or knight style bouncing. Why not board wide? And its normal movement is just like one square forward?