How Exile moves

The previous articles covered how Exile (BBC Micro, 1988) generates its world and draws it . This part is about the thing the game was actually famous for: the physics. Exile&rsquo;s marketing called it the first game with realistic physics, and for once the marketing undersold the engineering — gravity, momentum, drag, buoyancy, wind, bouncing, all computed for every active object, in 8-bit…