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Rework fuzzy comparison for 99 percent threshold (#3367)

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* Rework fuzzy comparison for 99 percent threshold

The current implementation is quite convoluted and can handle 99%
incorrectly when items exceed a certain damage range.

* Use metadata explicitly for comparison

Some item could use metadata to pack damageable and undamageable items
into the same id. Thus could lead to get ItemStack#getItemDamage() to
return bogus values for undamageable items.
This commit is contained in:
yueh
2018-02-05 15:20:02 +01:00
committed by GitHub
parent 6cffe93970
commit 36d6681eac
2 changed files with 52 additions and 163 deletions
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src/main/java/appeng/util/item/AEItemStack.java
+41 -108
View File
@@ -167,126 +167,30 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
{
if( st instanceof IAEItemStack )
{
final IAEItemStack o = (IAEItemStack) st;
final IAEItemStack other = (IAEItemStack) st;
if( this.sameOre( o ) )
if( OreHelper.INSTANCE.sameOre( this, other ) )
{
return true;
}
if( o.getItem() == this.getItem() )
{
if( this.getDefinition().getItem().isDamageable() )
{
final ItemStack a = this.getDefinition();
final ItemStack b = o.getDefinition();
final ItemStack itemStack = this.getDefinition();
final ItemStack otherStack = other.getDefinition();
try
{
if( mode == FuzzyMode.IGNORE_ALL )
{
return true;
}
else if( mode == FuzzyMode.PERCENT_99 )
{
final Item ai = a.getItem();
final Item bi = b.getItem();
return ( ai.getDurabilityForDisplay( a ) < 0.001f ) == ( bi.getDurabilityForDisplay( b ) < 0.001f );
}
else
{
final Item ai = a.getItem();
final Item bi = b.getItem();
final float percentDamageOfA = 1.0f - (float) ai.getDurabilityForDisplay( a );
final float percentDamageOfB = 1.0f - (float) bi.getDurabilityForDisplay( b );
return ( percentDamageOfA > mode.breakPoint ) == ( percentDamageOfB > mode.breakPoint );
}
}
catch( final Throwable e )
{
if( mode == FuzzyMode.IGNORE_ALL )
{
return true;
}
else if( mode == FuzzyMode.PERCENT_99 )
{
return ( a.getItemDamage() > 1 ) == ( b.getItemDamage() > 1 );
}
else
{
final float percentDamageOfA = (float) a.getItemDamage() / (float) a.getMaxDamage();
final float percentDamageOfB = (float) b.getItemDamage() / (float) b.getMaxDamage();
return ( percentDamageOfA > mode.breakPoint ) == ( percentDamageOfB > mode.breakPoint );
}
}
}
return this.getItemDamage() == o.getItemDamage();
}
return this.fuzzyItemStackComparison( itemStack, otherStack, mode );
}
if( st instanceof ItemStack )
if( st instanceof IAEItemStack )
{
final ItemStack o = (ItemStack) st;
final ItemStack otherStack = (ItemStack) st;
OreHelper.INSTANCE.sameOre( this, o );
if( o.getItem() == this.getItem() )
if( OreHelper.INSTANCE.sameOre( this, otherStack ) )
{
if( this.getDefinition().getItem().isDamageable() )
{
final ItemStack a = this.getDefinition();
try
{
if( mode == FuzzyMode.IGNORE_ALL )
{
return true;
}
else if( mode == FuzzyMode.PERCENT_99 )
{
final Item ai = a.getItem();
final Item bi = o.getItem();
return ( ai.getDurabilityForDisplay( a ) < 0.001f ) == ( bi.getDurabilityForDisplay( o ) < 0.001f );
}
else
{
final Item ai = a.getItem();
final Item bi = o.getItem();
final float percentDamageOfA = 1.0f - (float) ai.getDurabilityForDisplay( a );
final float percentDamageOfB = 1.0f - (float) bi.getDurabilityForDisplay( o );
return ( percentDamageOfA > mode.breakPoint ) == ( percentDamageOfB > mode.breakPoint );
}
}
catch( final Throwable e )
{
if( mode == FuzzyMode.IGNORE_ALL )
{
return true;
}
else if( mode == FuzzyMode.PERCENT_99 )
{
return ( a.getItemDamage() > 1 ) == ( o.getItemDamage() > 1 );
}
else
{
final float percentDamageOfA = (float) a.getItemDamage() / (float) a.getMaxDamage();
final float percentDamageOfB = (float) o.getItemDamage() / (float) o.getMaxDamage();
return ( percentDamageOfA > mode.breakPoint ) == ( percentDamageOfB > mode.breakPoint );
}
}
}
return this.getItemDamage() == o.getItemDamage();
return true;
}
final ItemStack itemStack = this.getDefinition();
return this.fuzzyItemStackComparison( itemStack, otherStack, mode );
}
return false;
@@ -457,4 +361,33 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
return this.sharedStack;
}
private boolean fuzzyItemStackComparison( ItemStack a, ItemStack b, FuzzyMode mode )
{
if( a.getItem() == b.getItem() )
{
if( a.getItem().isDamageable() )
{
if( mode == FuzzyMode.IGNORE_ALL )
{
return true;
}
else if( mode == FuzzyMode.PERCENT_99 )
{
return ( a.getItemDamage() > 1 ) == ( b.getItemDamage() > 1 );
}
else
{
final float percentDamageOfA = (float) a.getItemDamage() / (float) a.getMaxDamage();
final float percentDamageOfB = (float) b.getItemDamage() / (float) b.getMaxDamage();
return ( percentDamageOfA > mode.breakPoint ) == ( percentDamageOfB > mode.breakPoint );
}
}
return a.getMetadata() == b.getMetadata();
}
return false;
}
}