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(svn r22755) -Fix [FS#4727]: When marking tile selections dirty, use the height information of the corners instead of the surface slope. This is more accurate when the foundation is kind of undefined.

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frosch 2011-08-16 21:25:33 +00:00
parent 732ff2c789
commit bb3ce07d41
1 changed files with 7 additions and 2 deletions
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9
src/viewport.cpp
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@ -1723,8 +1723,13 @@ static void SetSelectionTilesDirty()
int bot_y = top_y;
do {
Point top = RemapCoords2(top_x, top_y); // topmost dirty point
Point bot = RemapCoords2(bot_x + TILE_SIZE - 1, bot_y + TILE_SIZE - 1); // bottommost point
/* topmost dirty point */
TileIndex top_tile = TileVirtXY(top_x, top_y);
Point top = RemapCoords(top_x, top_y, GetTileMaxZ(top_tile));
/* bottommost point */
TileIndex bottom_tile = TileVirtXY(bot_x, bot_y);
Point bot = RemapCoords(bot_x + TILE_SIZE, bot_y + TILE_SIZE, GetTileZ(bottom_tile)); // bottommost point
/* the 'x' coordinate of 'top' and 'bot' is the same (and always in the same distance from tile middle),
* tile height/slope affects only the 'y' on-screen coordinate! */