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(svn r10343) -Cleanup: Add documentation of functions and code-style fix.

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Thanks of 45 degree patch for bringing it up
This commit is contained in:
belugas 2007-06-26 16:58:40 +00:00
parent 6efd909fc9
commit 15d4a27c89
1 changed files with 14 additions and 3 deletions
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17
src/viewport.cpp
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@ -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();