diff options
| -rw-r--r-- | src/viewport.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/viewport.cpp b/src/viewport.cpp index 935627cfa..2f40dead4 100644 --- a/src/viewport.cpp +++ b/src/viewport.cpp @@ -649,6 +649,10 @@ static const int _AutorailType[6][2] = { #include "table/autorail.h" +/** + * Checks if the specified tile is selected and if so draws selection using correct selectionstyle. + * @param *ti TileInfo Tile that is being drawn + */ static void DrawTileSelection(const TileInfo *ti) { SpriteID image; @@ -1930,7 +1934,14 @@ static byte GetAutorailHT(int x, int y) return HT_RAIL | _AutorailPiece[x & 0xF][y & 0xF]; } -/** called regular to update tile highlighting in all cases */ +/** + * Updates tile highlighting for all cases. + * Uses _thd.selstart and _thd.selend and _thd.place_mode (set elsewhere) to determine _thd.pos and _thd.size + * Also drawstyle is determined. Uses _thd.new.* as a buffer and calls SetSelectionTilesDirty() twice, + * Once for the old and once for the new selection. + * _thd is TileHighlightData, found in viewport.h + * Called by MouseLoop() in windows.cpp + */ void UpdateTileSelection() { int x1; @@ -1981,8 +1992,8 @@ void UpdateTileSelection() if (_thd.drawstyle != _thd.new_drawstyle || _thd.pos.x != _thd.new_pos.x || _thd.pos.y != _thd.new_pos.y || _thd.size.x != _thd.new_size.x || _thd.size.y != _thd.new_size.y || - _thd.outersize.x != _thd.new_outersize.x || - _thd.outersize.y != _thd.new_outersize.y) { + _thd.outersize.x != _thd.new_outersize.x || + _thd.outersize.y != _thd.new_outersize.y) { /* clear the old selection? */ if (_thd.drawstyle) SetSelectionTilesDirty(); |