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- Performance optimization for FBlockThingsIterator::Next(): Actors that

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exist in only one block don't need to be added to the CheckArray or
  scanned for in it.


SVN r1532 (trunk)
This commit is contained in:
Randy Heit 2009-04-08 22:59:06 +00:00
parent 3dc01e77f7
commit a54367a3c0
2 changed files with 12 additions and 2 deletions
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7
docs/rh-log.txt
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@ -1,4 +1,9 @@
April 7, 2009 (Changes by Graf Zahl) April 8, 2009
- Performance optimization for FBlockThingsIterator::Next(): Actors that
exist in only one block don't need to be added to the CheckArray or
scanned for in it.
April 7, 2009 (Changes by Graf Zahl)
- added some default definitions for constants that may miss in some headers. - added some default definitions for constants that may miss in some headers.
- replaced __va_copy with va_copy per Chris's suggestion. - replaced __va_copy with va_copy per Chris's suggestion.
- replaced #include <malloc.h> with #include <stdlib.h> where possible. - replaced #include <malloc.h> with #include <stdlib.h> where possible.

7
src/p_maputl.cpp
View file

@ -830,15 +830,20 @@ void FBlockThingsIterator::StartBlock(int x, int y)
AActor *FBlockThingsIterator::Next() AActor *FBlockThingsIterator::Next()
{ {
while (true) for (;;)
{ {
while (block != NULL) while (block != NULL)
{ {
AActor *me = block->Me; AActor *me = block->Me;
FBlockNode *mynode = block;
int i; int i;
block = block->NextActor; block = block->NextActor;
// Don't recheck things that were already checked // Don't recheck things that were already checked
if (mynode->NextBlock == NULL && mynode->PrevBlock == &me->BlockNode)
{ // This actor doesn't span blocks, so we know it can only ever be checked once.
return me;
}
for (i = (int)CheckArray.Size() - 1; i >= checkindex; --i) for (i = (int)CheckArray.Size() - 1; i >= checkindex; --i)
{ {
if (CheckArray[i] == me) if (CheckArray[i] == me)