From f3f94d1a12646bfc15271e611185f40f66e039fb Mon Sep 17 00:00:00 2001 From: michi_cc Date: Mon, 27 Feb 2012 13:22:38 +0000 Subject: [PATCH] (svn r23995) -Fix [FS#5079]: Improve rounding when converting display speeds to internal speeds. --- src/strings.cpp | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/src/strings.cpp b/src/strings.cpp index 77174a9ed6..a1c147c83b 100644 --- a/src/strings.cpp +++ b/src/strings.cpp @@ -605,12 +605,13 @@ struct UnitConversion { /** * Convert the displayed value back into a value of OpenTTD's internal unit. * @param input The input to convert. - * @param round Whether to round the value or not. + * @param round Whether to round the value up or not. + * @param divider Divide the return value by this. * @return The converted value. */ - int64 FromDisplay(int64 input, bool round = true) const + int64 FromDisplay(int64 input, bool round = true, int64 divider = 1) const { - return ((input << this->shift) + (round ? this->multiplier / 2 : 0)) / this->multiplier; + return ((input << this->shift) + (round ? (this->multiplier * divider) - 1 : 0)) / (this->multiplier * divider); } }; @@ -699,7 +700,7 @@ uint ConvertKmhishSpeedToDisplaySpeed(uint speed) */ uint ConvertDisplaySpeedToKmhishSpeed(uint speed) { - return _units[_settings_game.locale.units].c_velocity.FromDisplay(speed * 16) / 10; + return _units[_settings_game.locale.units].c_velocity.FromDisplay(speed * 16, true, 10); } /** * Parse most format codes within a string and write the result to a buffer.