--- a/src/player.h	Wed Jun 13 12:05:56 2007 +0000
+++ b/src/player.h	Tue Jun 19 07:21:01 2007 +0000
@@ -149,6 +149,12 @@
 };
 
 
+/* The "steps" in loan size, in British Pounds! */
+enum {
+	LOAN_INTERVAL        = 10000,
+	LOAN_INTERVAL_OLD_AI = 50000,
+};
+
 typedef uint32 PlayerFace;
 
 struct Player {
@@ -331,7 +337,7 @@
  * @param flags The calling command flags.
  * @return 0 on success, CMD_ERROR on failure.
  */
-static inline int32 AddEngineReplacementForPlayer(Player *p, EngineID old_engine, EngineID new_engine, GroupID group, uint32 flags) { return AddEngineReplacement(&p->engine_renew_list, old_engine, new_engine, group, flags); }
+static inline CommandCost AddEngineReplacementForPlayer(Player *p, EngineID old_engine, EngineID new_engine, GroupID group, uint32 flags) { return AddEngineReplacement(&p->engine_renew_list, old_engine, new_engine, group, flags); }
 
 /**
  * Remove an engine replacement for the player.
@@ -340,7 +346,7 @@
  * @param flags The calling command flags.
  * @return 0 on success, CMD_ERROR on failure.
  */
-static inline int32 RemoveEngineReplacementForPlayer(Player *p, EngineID engine, GroupID group, uint32 flags) {return RemoveEngineReplacement(&p->engine_renew_list, engine, group, flags); }
+static inline CommandCost RemoveEngineReplacementForPlayer(Player *p, EngineID engine, GroupID group, uint32 flags) {return RemoveEngineReplacement(&p->engine_renew_list, engine, group, flags); }
 
 /**
  * Reset the livery schemes to the player's primary colour.