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- Changed the definition of SBarInfoCoordinate to use bitfields to pack its

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members into 32 bits so that it can be stored in a plain old int without
  any transformations. The transformation coord -> int -> coord was
  destructive if the coordinate value was negative, causing the final
  coordinate to be centered even if the original was not.


SVN r1678 (trunk)
This commit is contained in:
Randy Heit 2009-06-23 03:23:18 +00:00
parent 7161de7241
commit b0dd2409ff
4 changed files with 30 additions and 49 deletions
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5
docs/rh-log.txt
View file

@ -1,4 +1,9 @@
June 22, 2009
- Changed the definition of SBarInfoCoordinate to use bitfields to pack its
members into 32 bits so that it can be stored in a plain old int without
any transformations. The transformation coord -> int -> coord was
destructive if the coordinate value was negative, causing the final
coordinate to be centered even if the original was not.
- SBARINFO patch: Enable forcescaled with fullscreenoffsets.
- Fixed: Since UDMF allows for fractional vertex coordinates, it is no longer
safe for P_AlignPlane() to truncate coordinates when searching for the

19
src/g_shared/sbarinfo.h
View file

@ -49,23 +49,21 @@ class FScanner;
* This class is used to help prevent errors that may occur from adding or
* subtracting from coordinates.
*
* In order to provide the maximum flexibility, coordinates can be stored as an
* int with the 31st bit representing REL_CENTER. This class can handle this
* flag.
* In order to provide the maximum flexibility, coordinates are packed into
* an int with one bit reserved for relCenter.
*/
class SBarInfoCoordinate
{
public:
static const int REL_CENTER = 0x40000000;
SBarInfoCoordinate() {}
SBarInfoCoordinate(int coord, bool relCenter);
SBarInfoCoordinate(int value);
SBarInfoCoordinate &Add(int add);
int Coordinate() const { return value; }
bool RelCenter() const { return relCenter; }
int Value() const { return value | (relCenter ? REL_CENTER : 0); }
void Set(int coord, bool center) { value = coord; relCenter = center; }
void SetCoord(int coord) { value = coord; }
void SetRelCenter(bool center) { relCenter = center; }
int operator* () const { return Coordinate(); }
SBarInfoCoordinate operator+ (int add) const { return SBarInfoCoordinate(*this).Add(add); }
@ -76,8 +74,8 @@ class SBarInfoCoordinate
void operator-= (int sub) { Add(-sub); }
protected:
int value;
bool relCenter;
unsigned relCenter:1;
int value:31;
};
struct SBarInfoCommand; //we need to be able to use this before it is defined.
@ -171,8 +169,7 @@ struct SBarInfo
void ParseSBarInfo(int lump);
void ParseSBarInfoBlock(FScanner &sc, SBarInfoBlock &block);
void ParseMugShotBlock(FScanner &sc, FMugShotState &state);
void getCoordinates(FScanner &sc, bool fullScreenOffsets, int &x, int &y); //retrieves the next two arguments as x and y.
void getCoordinates(FScanner &sc, bool fullScreenOffsets, SBarInfoCoordinate &x, SBarInfoCoordinate &y);
void getCoordinates(FScanner &sc, bool fullScreenOffsets, SBarInfoCoordinate &x, SBarInfoCoordinate &y); //retrieves the next two arguments as x and y.
int getSignedInteger(FScanner &sc); //returns a signed integer.
int newImage(const char* patchname);
void Init();

17
src/g_shared/sbarinfo_display.cpp
View file

@ -96,15 +96,6 @@ SBarInfoCoordinate::SBarInfoCoordinate(int coord, bool relCenter) :
{
}
SBarInfoCoordinate::SBarInfoCoordinate(int value)
{
relCenter = ((value & REL_CENTER) != 0);
if(value < 0)
this->value = (value | REL_CENTER);
else
this->value = (value & (~REL_CENTER));
}
SBarInfoCoordinate &SBarInfoCoordinate::Add(int add)
{
value += add;
@ -765,7 +756,7 @@ void DSBarInfo::doCommands(SBarInfoBlock &block, int xOffset, int yOffset, int a
{
drawingFont = cmd.font;
}
DrawNumber(CPlayer->mo->InvSel->Amount, 3, cmd.special2, cmd.special3, xOffset, yOffset, alpha, block.fullScreenOffsets, cmd.translation, cmd.special4, false, !!(cmd.flags & DRAWSELECTEDINVENTORY_DRAWSHADOW));
DrawNumber(CPlayer->mo->InvSel->Amount, 3, *(SBarInfoCoordinate*)&cmd.special2, *(SBarInfoCoordinate*)&cmd.special3, xOffset, yOffset, alpha, block.fullScreenOffsets, cmd.translation, cmd.special4, false, !!(cmd.flags & DRAWSELECTEDINVENTORY_DRAWSHADOW));
}
}
else if((cmd.flags & DRAWSELECTEDINVENTORY_ALTERNATEONEMPTY))
@ -794,7 +785,7 @@ void DSBarInfo::doCommands(SBarInfoBlock &block, int xOffset, int yOffset, int a
{
drawingFont = cmd.font;
}
DrawInventoryBar(cmd.special, cmd.value, cmd.x, cmd.y, xOffset, yOffset, alpha, block.fullScreenOffsets, alwaysshow, cmd.special2, cmd.special3, cmd.translation, artibox, noarrows, alwaysshowcounter, bgalpha);
DrawInventoryBar(cmd.special, cmd.value, cmd.x, cmd.y, xOffset, yOffset, alpha, block.fullScreenOffsets, alwaysshow, *(SBarInfoCoordinate*)&cmd.special2, *(SBarInfoCoordinate*)&cmd.special3, cmd.translation, artibox, noarrows, alwaysshowcounter, bgalpha);
break;
}
case SBARINFO_DRAWBAR:
@ -1208,8 +1199,8 @@ void DSBarInfo::doCommands(SBarInfoBlock &block, int xOffset, int yOffset, int a
int tmpX = *x;
int tmpY = *y;
screen->VirtualToRealCoordsInt(tmpX, tmpY, w, h, 320, 200, true);
x = tmpX;
y = tmpY;
x.SetCoord(tmpX);
y.SetCoord(tmpY);
}
}
else

38
src/g_shared/sbarinfo_parser.cpp
View file

@ -765,12 +765,12 @@ void SBarInfo::ParseSBarInfoBlock(FScanner &sc, SBarInfoBlock &block)
sc.MustGetToken(',');
}
this->getCoordinates(sc, block.fullScreenOffsets, cmd.x, cmd.y);
cmd.special2 = *(cmd.x + 30);
cmd.special3 = *(cmd.y + 24);
*(SBarInfoCoordinate*)&cmd.special2 = cmd.x + 30;
*(SBarInfoCoordinate*)&cmd.special3 = cmd.y + 24;
cmd.translation = CR_GOLD;
if(sc.CheckToken(',')) //more font information
{
this->getCoordinates(sc, block.fullScreenOffsets, cmd.special2, cmd.special3);
this->getCoordinates(sc, block.fullScreenOffsets, *(SBarInfoCoordinate*)&cmd.special2, *(SBarInfoCoordinate*)&cmd.special3);
if(sc.CheckToken(','))
{
sc.MustGetToken(TK_Identifier);
@ -847,12 +847,12 @@ void SBarInfo::ParseSBarInfoBlock(FScanner &sc, SBarInfoBlock &block)
sc.MustGetToken(',');
this->getCoordinates(sc, block.fullScreenOffsets, cmd.x, cmd.y);
cmd.special2 = *(cmd.x + 26);
cmd.special3 = *(cmd.y + 22);
*(SBarInfoCoordinate*)&cmd.special2 = cmd.x + 26;
*(SBarInfoCoordinate*)&cmd.special3 = cmd.y + 22;
cmd.translation = CR_GOLD;
if(sc.CheckToken(',')) //more font information
{
this->getCoordinates(sc, block.fullScreenOffsets, cmd.special2, cmd.special3);
this->getCoordinates(sc, block.fullScreenOffsets, *(SBarInfoCoordinate*)&cmd.special2, *(SBarInfoCoordinate*)&cmd.special3);
if(sc.CheckToken(','))
{
sc.MustGetToken(TK_Identifier);
@ -1346,11 +1346,11 @@ void SBarInfo::ParseMugShotBlock(FScanner &sc, FMugShotState &state)
}
}
void SBarInfo::getCoordinates(FScanner &sc, bool fullScreenOffsets, int &x, int &y)
void SBarInfo::getCoordinates(FScanner &sc, bool fullScreenOffsets, SBarInfoCoordinate &x, SBarInfoCoordinate &y)
{
bool negative = false;
bool relCenter = false;
int *coords[2] = {&x, &y};
SBarInfoCoordinate *coords[2] = {&x, &y};
for(int i = 0;i < 2;i++)
{
negative = false;
@ -1361,7 +1361,7 @@ void SBarInfo::getCoordinates(FScanner &sc, bool fullScreenOffsets, int &x, int
// [-]INT center
negative = sc.CheckToken('-');
sc.MustGetToken(TK_IntConst);
*coords[i] = negative ? -sc.Number : sc.Number;
coords[i]->Set(negative ? -sc.Number : sc.Number, false);
if(sc.CheckToken('+'))
{
sc.MustGetToken(TK_Identifier);
@ -1371,24 +1371,12 @@ void SBarInfo::getCoordinates(FScanner &sc, bool fullScreenOffsets, int &x, int
}
if(fullScreenOffsets)
{
if(relCenter)
*coords[i] |= SBarInfoCoordinate::REL_CENTER;
else
*coords[i] &= ~SBarInfoCoordinate::REL_CENTER;
coords[i]->SetRelCenter(relCenter);
}
}
if(!fullScreenOffsets)
y = (negative ? -sc.Number : sc.Number) - (200 - this->height);
}
void SBarInfo::getCoordinates(FScanner &sc, bool fullScreenOffsets, SBarInfoCoordinate &x, SBarInfoCoordinate &y)
{
int tmpX = *x;
int tmpY = *y;
getCoordinates(sc, fullScreenOffsets, tmpX, tmpY);
x = tmpX;
y = tmpY;
y.SetCoord((negative ? -sc.Number : sc.Number) - (200 - this->height));
}
int SBarInfo::getSignedInteger(FScanner &sc)
@ -1497,8 +1485,8 @@ SBarInfoCommand::SBarInfoCommand() //sets the default values for more predicable
special3 = 0;
special4 = 0;
flags = 0;
x = 0;
y = 0;
x.Set(0, 0);
y.Set(0, 0);
value = 0;
image_index = 0;
sprite_index.SetInvalid();