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Location: cpp/openttd-patchpack/source/src/zoom_func.h - annotation
r24498:e9114d9ab04a
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Fix #6468: don't store version of AIs-started-via-console in name
You can do: "startai myai.3", which starts version 3 of "myai".
This is very useful for testing save/load code between different
versions of your AI.
However, when using this syntax, the AI got saved as "myai.3" as
name of the AI, instead of "myai". This caused several problems,
like indicating to the user the AI could not be found, but still
load the AI. But in all cases, the AI never got the chance to
load the saved data, making the whole reason this exists pointless.
By splitting the name and version already in the console command,
the code becomes simpler and AIs started this way now follow the
normal flow after initialization.
You can do: "startai myai.3", which starts version 3 of "myai".
This is very useful for testing save/load code between different
versions of your AI.
However, when using this syntax, the AI got saved as "myai.3" as
name of the AI, instead of "myai". This caused several problems,
like indicating to the user the AI could not be found, but still
load the AI. But in all cases, the AI never got the chance to
load the saved data, making the whole reason this exists pointless.
By splitting the name and version already in the console command,
the code becomes simpler and AIs started this way now follow the
normal flow after initialization.
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* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file zoom_func.h Functions related to zooming. */
#ifndef ZOOM_FUNC_H
#define ZOOM_FUNC_H
#include "zoom_type.h"
/**
* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL)
* When shifting right, value is rounded up
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int ScaleByZoom(int value, ZoomLevel zoom)
{
return value << zoom;
}
/**
* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL)
* When shifting right, value is rounded up
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int UnScaleByZoom(int value, ZoomLevel zoom)
{
return (value + (1 << zoom) - 1) >> zoom;
}
/**
* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL)
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int ScaleByZoomLower(int value, ZoomLevel zoom)
{
return value << zoom;
}
/**
* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL)
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int UnScaleByZoomLower(int value, ZoomLevel zoom)
{
return value >> zoom;
}
/**
* Short-hand to apply GUI zoom level.
* @param value Pixel amount at #ZOOM_LVL_BEGIN (full zoom in).
* @return Pixel amount at #ZOOM_LVL_GUI (current interface size).
*/
static inline int UnScaleGUI(int value)
{
return UnScaleByZoom(value, ZOOM_LVL_GUI);
}
/**
* Scale traditional pixel dimensions to GUI zoom level.
* @param value Pixel amount at #ZOOM_LVL_BASE (traditional "normal" interface size).
* @return Pixel amount at #ZOOM_LVL_GUI (current interface size).
*/
static inline int ScaleGUITrad(int value)
{
return UnScaleGUI(value * ZOOM_LVL_BASE);
}
/**
* Short-hand to apply font zoom level.
* @param value Pixel amount at #ZOOM_LVL_BEGIN (full zoom in).
* @return Pixel amount at #ZOOM_LVL_FONT (current interface size).
*/
static inline int UnScaleFont(int value)
{
return UnScaleByZoom(value, ZOOM_LVL_FONT);
}
/**
* Scale traditional pixel dimensions to Font zoom level.
* @param value Pixel amount at #ZOOM_LVL_BASE (traditional "normal" interface size).
* @return Pixel amount at #ZOOM_LVL_FONT (current interface size).
*/
static inline int ScaleFontTrad(int value)
{
return UnScaleFont(value * ZOOM_LVL_BASE);
}
#endif /* ZOOM_FUNC_H */
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