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author | Howaner <franzi.moos@googlemail.com> | 2014-03-08 12:29:45 +0100 |
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committer | Howaner <franzi.moos@googlemail.com> | 2014-03-08 12:29:45 +0100 |
commit | 527f3585108111d915c2982b6be6a6adbb5ff4d9 (patch) | |
tree | 63b622d8d4840bed7c08d9afc279733d8b7e1c56 /src/Simulator/VanillaFluidSimulator.cpp | |
parent | Change TNT Fuse to ticks (diff) | |
parent | Merge pull request #764 from xdot/master (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/Simulator/VanillaFluidSimulator.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/Simulator/VanillaFluidSimulator.cpp b/src/Simulator/VanillaFluidSimulator.cpp new file mode 100644 index 000000000..78aff9d68 --- /dev/null +++ b/src/Simulator/VanillaFluidSimulator.cpp @@ -0,0 +1,150 @@ + +// VanillaFluidSimulator.cpp + +#include "Globals.h" + +#include "VanillaFluidSimulator.h" +#include "../World.h" +#include "../Chunk.h" +#include "../BlockArea.h" +#include "../Blocks/BlockHandler.h" +#include "../BlockInServerPluginInterface.h" + + + + + +static const int InfiniteCost = 100; + + + + + +cVanillaFluidSimulator::cVanillaFluidSimulator( + cWorld & a_World, + BLOCKTYPE a_Fluid, + BLOCKTYPE a_StationaryFluid, + NIBBLETYPE a_Falloff, + int a_TickDelay, + int a_NumNeighborsForSource +) : super(a_World, a_Fluid, a_StationaryFluid, a_Falloff, a_TickDelay, a_NumNeighborsForSource) +{ +} + + + + + +void cVanillaFluidSimulator::Spread(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_NewMeta) +{ + int Cost[4]; + Cost[0] = CalculateFlowCost(a_Chunk, a_RelX + 1, a_RelY, a_RelZ, X_PLUS); + Cost[1] = CalculateFlowCost(a_Chunk, a_RelX - 1, a_RelY, a_RelZ, X_MINUS); + Cost[2] = CalculateFlowCost(a_Chunk, a_RelX, a_RelY, a_RelZ + 1, Z_PLUS); + Cost[3] = CalculateFlowCost(a_Chunk, a_RelX, a_RelY, a_RelZ - 1, Z_MINUS); + + int MinCost = InfiniteCost; + for (unsigned int i = 0; i < ARRAYCOUNT(Cost); ++i) + { + if (Cost[i] < MinCost) + { + MinCost = Cost[i]; + } + } + + if (Cost[0] == MinCost) + { + SpreadToNeighbor(a_Chunk, a_RelX + 1, a_RelY, a_RelZ, a_NewMeta); + } + if (Cost[1] == MinCost) + { + SpreadToNeighbor(a_Chunk, a_RelX - 1, a_RelY, a_RelZ, a_NewMeta); + } + if (Cost[2] == MinCost) + { + SpreadToNeighbor(a_Chunk, a_RelX, a_RelY, a_RelZ + 1, a_NewMeta); + } + if (Cost[3] == MinCost) + { + SpreadToNeighbor(a_Chunk, a_RelX, a_RelY, a_RelZ - 1, a_NewMeta); + } +} + + + + + +int cVanillaFluidSimulator::CalculateFlowCost(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, Direction a_Dir, unsigned a_Iteration) +{ + int Cost = InfiniteCost; + + BLOCKTYPE BlockType; + NIBBLETYPE BlockMeta; + + // Check if block is passable + if (!a_Chunk->UnboundedRelGetBlock(a_RelX, a_RelY, a_RelZ, BlockType, BlockMeta)) + { + return Cost; + } + if (!IsPassableForFluid(BlockType) && !IsBlockLiquid(BlockType)) + { + return Cost; + } + + // Check if block below is passable + if (!a_Chunk->UnboundedRelGetBlock(a_RelX, a_RelY - 1, a_RelZ, BlockType, BlockMeta)) + { + return Cost; + } + if (IsPassableForFluid(BlockType) || IsBlockLiquid(BlockType)) + { + // Path found, exit + return a_Iteration; + } + + // 5 blocks away, bail out + if (a_Iteration > 3) + { + return Cost; + } + + // Recurse + if (a_Dir != X_MINUS) + { + int NextCost = CalculateFlowCost(a_Chunk, a_RelX + 1, a_RelY, a_RelZ, X_PLUS, a_Iteration + 1); + if (NextCost < Cost) + { + Cost = NextCost; + } + } + if (a_Dir != X_PLUS) + { + int NextCost = CalculateFlowCost(a_Chunk, a_RelX - 1, a_RelY, a_RelZ, X_MINUS, a_Iteration + 1); + if (NextCost < Cost) + { + Cost = NextCost; + } + } + if (a_Dir != Z_MINUS) + { + int NextCost = CalculateFlowCost(a_Chunk, a_RelX, a_RelY, a_RelZ + 1, Z_PLUS, a_Iteration + 1); + if (NextCost < Cost) + { + Cost = NextCost; + } + } + if (a_Dir != Z_PLUS) + { + int NextCost = CalculateFlowCost(a_Chunk, a_RelX, a_RelY, a_RelZ - 1, Z_MINUS, a_Iteration + 1); + if (NextCost < Cost) + { + Cost = NextCost; + } + } + + return Cost; +} + + + + |