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Fix #7371: Avoid dependency on foundations of town tile during saveload
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@@ -2183,7 +2183,9 @@ ViewportSignKdtreeItem ViewportSignKdtreeItem::MakeTown(TownID id)
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item.id.town = id;
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const Town *town = Town::Get(id);
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Point pt = RemapCoords2(TileX(town->xy) * TILE_SIZE, TileY(town->xy) * TILE_SIZE);
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/* Avoid using RemapCoords2, it has dependency on the foundations status of the tile, and that can be unavailable during saveload, leading to crashes.
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* Instead "fake" foundations by taking the highest Z coordinate of any corner of the tile. */
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Point pt = RemapCoords(TileX(town->xy) * TILE_SIZE, TileY(town->xy) * TILE_SIZE, GetTileMaxZ(town->xy) * TILE_HEIGHT);
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pt.y -= 24 * ZOOM_LVL_BASE;
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