Add road stops flag to disable drawing catenary

docs/newgrf-roadstops-nml.html

@@ -78,6 +78,8 @@
 			<span class="indent">Animation callback requires random bits in variable <span class="code">extra_callback_info1</span>.</span></p>
 			<p><b>RST_GENERAL_FLAG_NO_ONE_WAY_OVERLAY</b><br />
 			<span class="indent">Do not show one way road overlay sprites, this should only be set if different graphics are provided for the different one-way states using the <span class="code">one_way_info</span> variable.</span></p>
+			<p><b>RST_GENERAL_FLAG_NO_CATENARY</b><br />
+			<span class="indent">Do not show catenary graphics. (This only takes effect from <span class="code">road_stops</span> version 2).</span></p>
 		</td></tr>
 		<tr><td>minimum_bridge_height</td><td>Array of 6 items [0..255, ...]</td><td>Minimum clearances required for a bridge for each of the <a href="#roadstop_views">6 views/rotations</a> (or 0 to not allow any bridge). Values are given in height level units (1 level == 8px).</td></tr>
 		<tr><td>disallowed_bridge_pillars</td><td>Array of 6 items [bitmask(RST_BRIDGE_PILLAR_FLAG_, ...), ...]</td><td>

docs/newgrf-roadstops.html

@@ -19,8 +19,9 @@
 	<p>A subset of the functionality listed below is also supported in a fork of NML, see the associated <a href="newgrf-roadstops-nml.html">NML road stops</a> and <a href="newgrf-additions-nml.html">NML additions</a> documents for more details.</p>
 	<p>NewGRFs which use this feature SHOULD use the <a href="newgrf-additions.html#feature-test">feature testing</a> mechanism to check whether the road stop feature and/or feature ID mapping is supported.</p>
 	<p>NewGRFs which use this feature MUST use the <a href="newgrf-additions.html#feature-id-mapping">feature ID mapping</a> mechanism to map the non-standard NewGRF road stop feature to a local feature ID.</p>
-	<p>This feature is indicated by the feature name: <font face="monospace">road_stops</font>, version 1.</br>
+	<p>This feature is indicated by the feature name: <font face="monospace">road_stops</font>, version 1.<br />
-	The feature name to use for feature ID mapping is <font face="monospace">road_stops</font>.</p>
+	The feature name to use for feature ID mapping is <font face="monospace">road_stops</font>.<br />
+	Features/properties/variables which require a higher version will indicate the required version. Unless indicated otherwise these will fall back to doing nothing on versions which do not support them.</p>
 
 
 	<p><b>Actions:</b>
@@ -149,6 +150,7 @@
 	<tr><th>Bit</th><th>Value</th><th>Meaning</th></tr>
 	<tr><td>0</td><td>1</td><td>Callback 141 needs random bits in variable 10</td></tr>
 	<tr><td>1</td><td>2</td><td>Do not show one way road overlay sprites, this should only be set if different graphics are provided for the different one-way states using bits 0..1 of variable 50.</td></tr>
+	<tr><td>2</td><td>4</td><td>Do not catenary graphics.</br>This requires <font face="monospace">road_stops</font>, version 2.</td></tr>
 	</table>
 	The default value is 0 (no flags enabled).
 	</p>

src/newgrf_extension.cpp

@@ -51,7 +51,7 @@ extern const GRFFeatureInfo _grf_feature_list[] = {
 	GRFFeatureInfo("action0_object_edge_foundation_mode", 2),
 	GRFFeatureInfo("action0_object_flood_resistant", 1),
 	GRFFeatureInfo("action0_object_viewport_map_tile_type", 1),
-	GRFFeatureInfo("road_stops", 1),
+	GRFFeatureInfo("road_stops", 2),
 	GRFFeatureInfo(),
 };
 

src/newgrf_roadstop.h

@@ -66,6 +66,7 @@ DECLARE_ENUM_AS_BIT_SET(RoadStopDrawMode)
 enum RoadStopSpecFlags {
 	RSF_CB141_RANDOM_BITS,    ///< Callback 141 needs random bits.
 	RSF_NO_ONE_WAY_OVERLAY,   ///< Do not show one-way road overlays.
+	RSF_NO_CATENARY,          ///< Do not show catenary.
 };
 
 enum RoadStopSpecIntlFlags {

src/road_cmd.cpp

@@ -2115,7 +2115,7 @@ static SpriteID GetRoadGroundSprite(const TileInfo *ti, Roadside roadside, const
  * Draw ground sprite and road pieces
  * @param ti TileInfo
  */
-void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside, bool snow_or_desert)
+void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside, bool snow_or_desert, bool draw_catenary)
 {
 	const bool is_road_tile = IsTileType(ti->tile, MP_ROAD);
 
@@ -2154,8 +2154,10 @@ void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside,
 		return;
 	}
 
+	if (draw_catenary) {
 		/* Draw road, tram catenary */
 		DrawRoadCatenary(ti);
+	}
 
 	/* Return if full detail is disabled, or we are zoomed fully out. */
 	if (!HasBit(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
@@ -2184,12 +2186,12 @@ void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside,
 
 void DrawRoadBitsRoad(TileInfo *ti)
 {
-	DrawRoadBits(ti, GetRoadBits(ti->tile, RTT_ROAD), GetRoadBits(ti->tile, RTT_TRAM), GetRoadside(ti->tile), IsOnSnow(ti->tile));
+	DrawRoadBits(ti, GetRoadBits(ti->tile, RTT_ROAD), GetRoadBits(ti->tile, RTT_TRAM), GetRoadside(ti->tile), IsOnSnow(ti->tile), true);
 }
 
 void DrawRoadBitsTunnelBridge(TileInfo *ti)
 {
-	DrawRoadBits(ti, GetCustomBridgeHeadRoadBits(ti->tile, RTT_ROAD), GetCustomBridgeHeadRoadBits(ti->tile, RTT_TRAM), ROADSIDE_PAVED, false);
+	DrawRoadBits(ti, GetCustomBridgeHeadRoadBits(ti->tile, RTT_ROAD), GetCustomBridgeHeadRoadBits(ti->tile, RTT_TRAM), ROADSIDE_PAVED, false, true);
 }
 
 /** Tile callback function for rendering a road tile to the screen */

src/station_cmd.cpp

@@ -3450,10 +3450,10 @@ draw_default_foundation:
 		}
 	} else if (IsRoadWaypointTile(ti->tile)) {
 		RoadBits bits = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? ROAD_X : ROAD_Y;
-		extern void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside, bool snow_or_desert);
+		extern void DrawRoadBits(TileInfo *ti, RoadBits road, RoadBits tram, Roadside roadside, bool snow_or_desert, bool draw_catenary);
 		DrawRoadBits(ti, GetRoadTypeRoad(ti->tile) != INVALID_ROADTYPE ? bits : ROAD_NONE,
 				GetRoadTypeTram(ti->tile) != INVALID_ROADTYPE ? bits : ROAD_NONE,
-				GetRoadWaypointRoadside(ti->tile), IsRoadWaypointOnSnowOrDesert(ti->tile));
+				GetRoadWaypointRoadside(ti->tile), IsRoadWaypointOnSnowOrDesert(ti->tile), false);
 	} else {
 		if (layout != nullptr) {
 			/* Sprite layout which needs preprocessing */
@@ -3559,9 +3559,11 @@ draw_default_foundation:
 			}
 		}
 
+		if (stopspec == nullptr || !HasBit(stopspec->flags, RSF_NO_CATENARY)) {
 			/* Draw road, tram catenary */
 			DrawRoadCatenary(ti);
 		}
+	}
 
 	if (IsRailWaypoint(ti->tile)) {
 		/* Don't offset the waypoint graphics; they're always the same. */