Refactor struct part 2.

src/engine/engine.c

@@ -20,7 +20,7 @@ void engineUpdateStart(engine_t *engine, game_t *game, float delta) {
 }
 
 bool engineUpdateEnd(engine_t *engine, game_t *game) {
-  if(inputIsPressed(INPUT_NULL)) return false;
+  if(inputIsPressed(&engine->input, INPUT_NULL)) return false;
   return true;
 }