Codechange: MakeBridgeRamp()'s road-or-rail-type parameter does not make sense.

Road type and rail type are stored in separate locations, so this parameter does
not make make sense as it is only used for rail bridges. Instead explicitly set the
rail type in MakeRailBridgeRamp().

src/bridge_map.h

@@ -12,6 +12,7 @@
 #ifndef BRIDGE_MAP_H
 #define BRIDGE_MAP_H
 
+#include "rail_map.h"
 #include "road_map.h"
 #include "bridge.h"
 
@@ -123,10 +124,9 @@ static inline void SetBridgeMiddle(TileIndex t, Axis a)
  * @param bridgetype the type of bridge this bridge ramp belongs to
  * @param d          the direction this ramp must be facing
  * @param tt         the transport type of the bridge
- * @param rt         the road or rail type
  * @note this function should not be called directly.
  */
-static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, TransportType tt, uint rt)
+static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, TransportType tt)
 {
 	SetTileType(t, MP_TUNNELBRIDGE);
 	SetTileOwner(t, o);
@@ -136,7 +136,7 @@ static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, D
 	_m[t].m5 = 1 << 7 | tt << 2 | d;
 	SB(_me[t].m6, 2, 4, bridgetype);
 	_me[t].m7 = 0;
-	_me[t].m8 = rt;
+	_me[t].m8 = 0;
 }
 
 /**
@@ -147,14 +147,14 @@ static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, D
  * @param owner_tram the new owner of the tram on the bridge
  * @param bridgetype the type of bridge this bridge ramp belongs to
  * @param d          the direction this ramp must be facing
- * @param r          the road type of the bridge
+ * @param rts        the road types of the bridge
  */
-static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, Owner owner_road, Owner owner_tram, BridgeType bridgetype, DiagDirection d, RoadTypes r)
+static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, Owner owner_road, Owner owner_tram, BridgeType bridgetype, DiagDirection d, RoadTypes rts)
 {
-	MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD, 0);
+	MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD);
 	SetRoadOwner(t, ROADTYPE_ROAD, owner_road);
 	if (owner_tram != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, owner_tram);
-	SetRoadTypes(t, r);
+	SetRoadTypes(t, rts);
 }
 
 /**
@@ -163,11 +163,12 @@ static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, Owner owner_road, Ow
  * @param o          the new owner of the bridge ramp
  * @param bridgetype the type of bridge this bridge ramp belongs to
  * @param d          the direction this ramp must be facing
- * @param r          the rail type of the bridge
+ * @param rt         the rail type of the bridge
  */
-static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType r)
+static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType rt)
 {
-	MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL, r);
+	MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL);
+	SetRailType(t, rt);
 }
 
 /**
@@ -178,7 +179,7 @@ static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetyp
  */
 static inline void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
 {
-	MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER, 0);
+	MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER);
 }
 
 #endif /* BRIDGE_MAP_H */