cpp/openttd-patchpack/source Changeset - r25038:e3007a7a86a5

Changeset - r25038:e3007a7a86a5

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frosch - 4 years ago 2021-03-10 21:49:56
frosch@openttd.org

Fix #8647: draw tram catenary using 4 bounding boxes.
The back sprite is now supposed to contain west, north and east pillars.
The front sprite is supposed to contain the south pillar and the wires.

1 file changed with 17 insertions and 2 deletions:

src/road_cmd.cpp

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src/road_cmd.cpp

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@@ @@ -1423,8 +1423,23 @@ void DrawRoadTypeCatenary(const TileInfo @@
 	 * For tiles with OWNER_TOWN or OWNER_NONE, recolour CC to grey as a neutral colour. */
 	Owner owner = GetRoadOwner(ti->tile, GetRoadTramType(rt));
 	PaletteID pal = (owner == OWNER_NONE || owner == OWNER_TOWN ? GENERAL_SPRITE_COLOUR(COLOUR_GREY) : COMPANY_SPRITE_COLOUR(owner));
 	if (back != 0) AddSortableSpriteToDraw(back,  pal, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
 	if (front != 0) AddSortableSpriteToDraw(front, pal, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
 	int z_wires = (ti->tileh == SLOPE_FLAT ? 0 : TILE_HEIGHT) + BB_HEIGHT_UNDER_BRIDGE;
 	if (back != 0) {
 		/* The "back" sprite contains the west, north and east pillars.
 		 * We cut the sprite at 3/8 of the west/east edges to create 3 sprites.
 		 * 3/8 is chosen so that sprites can somewhat graphically extend into the tile. */
 		static const int INF = 1000; ///< big number compared to sprite size
 		static const SubSprite west  = { -INF, -INF, -12, INF };
 		static const SubSprite north = {  -12, -INF,  12, INF };
 		static const SubSprite east  = {   12, -INF, INF, INF };
 		AddSortableSpriteToDraw(back, pal, ti->x, ti->y, 16,  1, z_wires, ti->z, IsTransparencySet(TO_CATENARY), 15,  0, GetSlopePixelZInCorner(ti->tileh, CORNER_W), &west);
 		AddSortableSpriteToDraw(back, pal, ti->x, ti->y,  1,  1, z_wires, ti->z, IsTransparencySet(TO_CATENARY),  0,  0, GetSlopePixelZInCorner(ti->tileh, CORNER_N), &north);
 		AddSortableSpriteToDraw(back, pal, ti->x, ti->y,  1, 16, z_wires, ti->z, IsTransparencySet(TO_CATENARY),  0, 15, GetSlopePixelZInCorner(ti->tileh, CORNER_E), &east);
+	}
 	if (front != 0) {
 		/* Draw the "front" sprite (containing south pillar and wires) at a Z height that is both above the vehicles and above the "back" pillars. */
 		AddSortableSpriteToDraw(front, pal, ti->x, ti->y, 16, 16, z_wires + 1, ti->z, IsTransparencySet(TO_CATENARY), 0, 0, z_wires);
+	}
+}
 /**

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