diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/BlockArea.cpp | 38 | ||||
| -rw-r--r-- | src/BlockArea.h | 17 |
2 files changed, 54 insertions, 1 deletions
diff --git a/src/BlockArea.cpp b/src/BlockArea.cpp index 7526e1c32..600940d96 100644 --- a/src/BlockArea.cpp +++ b/src/BlockArea.cpp @@ -245,6 +245,26 @@ void MergeCombinatorDifference(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBL +/** Combinator used for cBlockArea::msSimpleCompare merging */ +template <bool MetaValid> +void MergeCombinatorSimpleCompare(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBLETYPE & a_DstMeta, NIBBLETYPE a_SrcMeta) +{ + if ((a_DstType == a_SrcType) && (!MetaValid || (a_DstMeta == a_SrcMeta))) + { + // The blocktypes are the same, and the blockmetas are not present or are the same + a_DstType = E_BLOCK_AIR; + } + else + { + // The blocktypes or blockmetas differ + a_DstType = E_BLOCK_STONE; + } +} + + + + + /** Combinator used for cBlockArea::msMask merging */ template <bool MetaValid> void MergeCombinatorMask(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBLETYPE & a_DstMeta, NIBBLETYPE a_SrcMeta) @@ -2188,10 +2208,12 @@ void cBlockArea::RelSetData( + + template <bool MetasValid> void cBlockArea::MergeByStrategy(const cBlockArea & a_Src, int a_RelX, int a_RelY, int a_RelZ, eMergeStrategy a_Strategy, const NIBBLETYPE * SrcMetas, NIBBLETYPE * DstMetas) { - // Block types are compulsory, block metas are voluntary + // Block types are compulsory, block metas are optional if (!HasBlockTypes() || !a_Src.HasBlockTypes()) { LOGWARNING("%s: cannot merge because one of the areas doesn't have blocktypes.", __FUNCTION__); @@ -2297,6 +2319,20 @@ void cBlockArea::MergeByStrategy(const cBlockArea & a_Src, int a_RelX, int a_Rel return; } // case msDifference + case cBlockArea::msSimpleCompare: + { + InternalMergeBlocks<MetasValid, MergeCombinatorSimpleCompare<MetasValid> >( + m_BlockTypes, a_Src.GetBlockTypes(), + DstMetas, SrcMetas, + SizeX, SizeY, SizeZ, + SrcOffX, SrcOffY, SrcOffZ, + DstOffX, DstOffY, DstOffZ, + a_Src.GetSizeX(), a_Src.GetSizeY(), a_Src.GetSizeZ(), + m_Size.x, m_Size.y, m_Size.z + ); + return; + } // case msSimpleCompare + case cBlockArea::msMask: { InternalMergeBlocks<MetasValid, MergeCombinatorMask<MetasValid> >( diff --git a/src/BlockArea.h b/src/BlockArea.h index 6b8b30443..ce417ceb4 100644 --- a/src/BlockArea.h +++ b/src/BlockArea.h @@ -54,6 +54,7 @@ public: msLake, msSpongePrint, msDifference, + msSimpleCompare, msMask, } ; @@ -156,6 +157,22 @@ public: | A | sponge | A | Sponge is the NOP block | * | B | B | Everything else overwrites anything + msDifference: + Used to determine the differences between two areas. Only the differring blocks are preserved: + | area block | | + | this | Src | result | + +------+-------+--------+ + | A | A | air | Same blocks are replaced with air + | A | non-A | A | Differring blocks are kept from "this" + + msSimpleCompare: + Used to determine the differences between two areas. Blocks that differ are replaced with stone, same blocks are replaced with air + | area block | | + | this | Src | result | + +------+-------+--------+ + | A | A | air | Same blocks are replaced with air + | A | non-A | stone | Differring blocks are replaced with stone + msMask: Combines two areas, the blocks that are the same are kept, differing ones are reset to air | area block | | |