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Fix #7371: Avoid dependency on foundations of town tile during saveload

pull/7516/head
Niels Martin Hansen 2019-03-23 11:17:27 +01:00
parent 0344e7a0a1
commit c9fe6e7b8f
1 changed files with 3 additions and 1 deletions
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4
src/viewport.cpp
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@ -2183,7 +2183,9 @@ ViewportSignKdtreeItem ViewportSignKdtreeItem::MakeTown(TownID id)
item.id.town = id;
const Town *town = Town::Get(id);
Point pt = RemapCoords2(TileX(town->xy) * TILE_SIZE, TileY(town->xy) * TILE_SIZE);
/* Avoid using RemapCoords2, it has dependency on the foundations status of the tile, and that can be unavailable during saveload, leading to crashes.
* Instead "fake" foundations by taking the highest Z coordinate of any corner of the tile. */
Point pt = RemapCoords(TileX(town->xy) * TILE_SIZE, TileY(town->xy) * TILE_SIZE, GetTileMaxZ(town->xy) * TILE_HEIGHT);
pt.y -= 24 * ZOOM_LVL_BASE;