-#ifndef ENT_CHALLENGE_H
-#define ENT_CHALLENGE_H
-
+#pragma once
#include "entity.h"
-static void ent_challenge_preupdate( ent_challenge *challenge, int active );
-static void ent_challenge_call( world_instance *world, ent_call *call );
-
-#endif /* ENT_CHALLENGE_H */
+void ent_challenge_preupdate( ent_focus_context *ctx );
+entity_call_result ent_challenge_call( world_instance *world, ent_call *call );