(svn r19307) -Add: Let railtypes specify their own smallmap colour. No legend support yet.

src/newgrf.cpp

@@ -2583,6 +2583,10 @@ static ChangeInfoResult RailTypeChangeInfo(uint id, int numinfo, int prop, ByteR
 				rti->acceleration_type = Clamp(buf->ReadByte(), 0, 2);
 				break;
 
+			case 0x16: // Map colour
+				rti->map_colour = MapDOSColour(buf->ReadByte());
+				break;
+
 			default:
 				ret = CIR_UNKNOWN;
 				break;
@@ -2637,6 +2641,7 @@ static ChangeInfoResult RailTypeReserveInfo(uint id, int numinfo, int prop, Byte
 			case 0x11: // Curve speed advantage
 			case 0x12: // Station graphic
 			case 0x15: // Acceleration model
+			case 0x16: // Map colour
 				buf->ReadByte();
 				break;
 

src/rail.h

@@ -203,6 +203,11 @@ struct RailtypeInfo {
 	 */
 	RailTypeLabel label;
 
+	/**
+	 * Colour on mini-map
+	 */
+	byte map_colour;
+
 	/**
 	 * Sprite groups for resolving sprites
 	 */

src/smallmap_gui.cpp

@@ -419,6 +419,14 @@ static inline uint32 GetSmallMapRoutesPixels(TileIndex tile, TileType t)
 			case STATION_DOCK:    return MKCOLOUR(0x98989898);
 			default:              return MKCOLOUR(0xFFFFFFFF);
 		}
+	} else if (t == MP_RAILWAY) {
+		AndOr andor = {
+			GetRailTypeInfo(GetRailType(tile))->map_colour * MKCOLOUR(0x00010100),
+			_smallmap_contours_andor[t].mand
+		};
+
+		const SmallMapColourScheme *cs = &_heightmap_schemes[_settings_client.gui.smallmap_land_colour];
+		return ApplyMask(cs->default_colour, &andor);
 	}
 
 	/* Ground colour */

src/table/railtypes.h

@@ -90,6 +90,9 @@ static const RailtypeInfo _original_railtypes[] = {
 		/* rail type label */
 		'RAIL',
 
+		/* map colour */
+		0x0A,
+
 		{ NULL },
 	},
 
@@ -170,6 +173,9 @@ static const RailtypeInfo _original_railtypes[] = {
 		/* rail type label */
 		'ELRL',
 
+		/* map colour */
+		0x0A,
+
 		{ NULL },
 	},
 
@@ -246,6 +252,9 @@ static const RailtypeInfo _original_railtypes[] = {
 		/* rail type label */
 		'MONO',
 
+		/* map colour */
+		0x0A,
+
 		{ NULL },
 	},
 
@@ -322,6 +331,9 @@ static const RailtypeInfo _original_railtypes[] = {
 		/* rail type label */
 		'MGLV',
 
+		/* map colour */
+		0x0A,
+
 		{ NULL },
 	},
 };