From fde99748c0972e137952b118f8b651d725ad37dc Mon Sep 17 00:00:00 2001
From: peter1138 <peter1138@openttd.org>
Date: Tue, 29 Nov 2005 22:29:59 +0000
Subject: [PATCH] (svn r3248) - Codechange: Change interface of CanRefitTo() to
 supply the engine type directly instead of getting it from a vehicle. This
 allows the function to be used before vehicles are involved.

---
 aircraft_cmd.c | 2 +-
 ship_cmd.c     | 2 +-
 train_cmd.c    | 2 +-
 vehicle.c      | 8 ++++----
 vehicle.h      | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/aircraft_cmd.c b/aircraft_cmd.c
index eaeeb0c840..06aef29162 100644
--- a/aircraft_cmd.c
+++ b/aircraft_cmd.c
@@ -496,7 +496,7 @@ int32 CmdRefitAircraft(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 	avi = AircraftVehInfo(v->engine_type);
 
 	/* Check cargo */
-	if (new_cid > NUM_CARGO || !CanRefitTo(v, new_cid)) return CMD_ERROR;
+	if (new_cid > NUM_CARGO || !CanRefitTo(v->engine_type, new_cid)) return CMD_ERROR;
 
 	SET_EXPENSES_TYPE(EXPENSES_AIRCRAFT_RUN);
 
diff --git a/ship_cmd.c b/ship_cmd.c
index c029a04b6f..be6b2aee8f 100644
--- a/ship_cmd.c
+++ b/ship_cmd.c
@@ -1056,7 +1056,7 @@ int32 CmdRefitShip(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 
 	/* Check cargo */
 	if (!ShipVehInfo(v->engine_type)->refittable) return CMD_ERROR;
-	if (new_cid > NUM_CARGO || !CanRefitTo(v, new_cid)) return CMD_ERROR;
+	if (new_cid > NUM_CARGO || !CanRefitTo(v->engine_type, new_cid)) return CMD_ERROR;
 
 	SET_EXPENSES_TYPE(EXPENSES_SHIP_RUN);
 
diff --git a/train_cmd.c b/train_cmd.c
index 71672ca448..2689da67f3 100644
--- a/train_cmd.c
+++ b/train_cmd.c
@@ -1717,7 +1717,7 @@ int32 CmdRefitRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 		/* XXX: We also refit all the attached wagons en-masse if they
 		 * can be refitted. This is how TTDPatch does it.  TODO: Have
 		 * some nice [Refit] button near each wagon. --pasky */
-		if (!CanRefitTo(v, new_cid)) continue;
+		if (!CanRefitTo(v->engine_type, new_cid)) continue;
 
 		if (v->cargo_cap != 0) {
 			const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);
diff --git a/vehicle.c b/vehicle.c
index 3c7f3156d6..dbf65f4942 100644
--- a/vehicle.c
+++ b/vehicle.c
@@ -680,15 +680,15 @@ bool CanFillVehicle(Vehicle *v)
 	return false;
 }
 
-/** Check if a given vehicle (type) can be refitted to a given cargo
- * @param *v vehicle to check
+/** Check if a given engine type can be refitted to a given cargo
+ * @param engine_type Engine type to check
  * @param cid_to check refit to this cargo-type
  * @return true if it is possible, false otherwise
  */
-bool CanRefitTo(const Vehicle *v, CargoID cid_to)
+bool CanRefitTo(EngineID engine_type, CargoID cid_to)
 {
 	CargoID cid = _global_cargo_id[_opt_ptr->landscape][cid_to];
-	return HASBIT(_engine_info[v->engine_type].refit_mask, cid) != 0;
+	return HASBIT(_engine_info[engine_type].refit_mask, cid) != 0;
 }
 
 static void DoDrawVehicle(const Vehicle *v)
diff --git a/vehicle.h b/vehicle.h
index 59955de412..d8b2b8e36c 100644
--- a/vehicle.h
+++ b/vehicle.h
@@ -273,7 +273,7 @@ Vehicle *FindVehicleOnTileZ(TileIndex tile, byte z);
 void InitializeTrains(void);
 
 bool CanFillVehicle(Vehicle *v);
-bool CanRefitTo(const Vehicle *v, CargoID cid_to);
+bool CanRefitTo(EngineID engine_type, CargoID cid_to);
 
 void ViewportAddVehicles(DrawPixelInfo *dpi);