From 66670f5d5ccabb3b560c2342d79d0cb1e8550899 Mon Sep 17 00:00:00 2001 From: "madmaxoft@gmail.com" Date: Sat, 2 Mar 2013 15:44:31 +0000 Subject: Floody fluid simulator has been converted to use direct chunk access git-svn-id: http://mc-server.googlecode.com/svn/trunk@1236 0a769ca7-a7f5-676a-18bf-c427514a06d6 --- source/Simulator/FloodyFluidSimulator.cpp | 215 ++++++++++++++++-------------- 1 file changed, 116 insertions(+), 99 deletions(-) (limited to 'source/Simulator/FloodyFluidSimulator.cpp') diff --git a/source/Simulator/FloodyFluidSimulator.cpp b/source/Simulator/FloodyFluidSimulator.cpp index eaf16fff4..33c8ca5a2 100644 --- a/source/Simulator/FloodyFluidSimulator.cpp +++ b/source/Simulator/FloodyFluidSimulator.cpp @@ -8,6 +8,7 @@ #include "FloodyFluidSimulator.h" #include "../World.h" +#include "../Chunk.h" #include "../BlockArea.h" #include "../Blocks/BlockHandler.h" @@ -44,36 +45,22 @@ cFloodyFluidSimulator::cFloodyFluidSimulator( -void cFloodyFluidSimulator::SimulateBlock(int a_BlockX, int a_BlockY, int a_BlockZ) +void cFloodyFluidSimulator::SimulateBlock(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ) { - FLOG("Simulating block {%d, %d, %d}", a_BlockX, a_BlockY, a_BlockZ); - - cBlockArea Area; - int MinBlockY = std::max(0, a_BlockY - 1); - int MaxBlockY = std::min(+cChunkDef::Height, a_BlockY + 1); - if (!Area.Read(&m_World, a_BlockX - 1, a_BlockX + 1, MinBlockY, MaxBlockY, a_BlockZ - 1, a_BlockZ + 1)) - { - // Cannot read the immediate neighborhood, probably too close to an unloaded chunk. Bail out. - // TODO: Shouldn't we re-schedule? - FLOG(" Cannot read area, bailing out."); - return; - } - int y = (a_BlockY > 0) ? 1 : 0; // Relative y-coord of this block in Area - - NIBBLETYPE MyMeta = Area.GetRelBlockMeta(1, y, 1); - if (!IsAnyFluidBlock(Area.GetRelBlockType(1, y, 1))) + NIBBLETYPE MyMeta = a_Chunk->GetMeta(a_RelX, a_RelY, a_RelZ); + if (!IsAnyFluidBlock(a_Chunk->GetBlock(a_RelX, a_RelY, a_RelZ))) { // Can happen - if a block is scheduled for simulating and gets replaced in the meantime. - FLOG(" Not my type: exp %d, got %d", m_FluidBlock, Area.GetRelBlockType(1, y, 1)); return; } if (MyMeta != 0) { // Source blocks aren't checked for tributaries, others are. - if (CheckTributaries(a_BlockX, a_BlockY, a_BlockZ, Area, MyMeta)) + if (CheckTributaries(a_Chunk, a_RelX, a_RelY, a_RelZ, MyMeta)) { - // Has no tributary, has been decreased, no more processing needed (neighbors have been scheduled by the decrease) + // Has no tributary, has been decreased (in CheckTributaries()), + // no more processing needed (neighbors have been scheduled by the decrease) return; } } @@ -82,107 +69,128 @@ void cFloodyFluidSimulator::SimulateBlock(int a_BlockX, int a_BlockY, int a_Bloc // If this is a source block or was falling, the new meta is just the falloff // Otherwise it is the current meta plus falloff (may be larger than max height, will be checked later) NIBBLETYPE NewMeta = ((MyMeta == 0) || ((MyMeta & 0x08) != 0)) ? m_Falloff : (MyMeta + m_Falloff); - - BLOCKTYPE Below = Area.GetRelBlockType(1, 0, 1); - if ((a_BlockY > 0) && (IsPassableForFluid(Below) || IsBlockLava(Below) || IsBlockWater(Below))) - { - // Spread only down, possibly washing away what's there or turning lava to stone / cobble / obsidian: - SpreadToNeighbor(a_BlockX, a_BlockY - 1, a_BlockZ, Area, 8); - } - else if (NewMeta < 8) // Can reach there + bool SpreadFurther = true; + if (a_RelY > 0) { + BLOCKTYPE Below = a_Chunk->GetBlock(a_RelX, a_RelY - 1, a_RelZ); + if (IsPassableForFluid(Below) || IsBlockLava(Below) || IsBlockWater(Below)) + { + // Spread only down, possibly washing away what's there or turning lava to stone / cobble / obsidian: + SpreadToNeighbor(a_Chunk, a_RelX, a_RelY - 1, a_RelZ, 8); + SpreadFurther = false; + } // If source creation is on, check for it here: - if ( + else if ( (m_NumNeighborsForSource > 0) && // Source creation is on (MyMeta == m_Falloff) && // Only exactly one block away from a source (fast bail-out) !IsPassableForFluid(Below) && // Only exactly 1 block deep - CheckNeighborsForSource(a_BlockX, a_BlockY, a_BlockZ, Area) // Did we create a source? + CheckNeighborsForSource(a_Chunk, a_RelX, a_RelY, a_RelZ) // Did we create a source? ) { // We created a source, no more spreading is to be done now - // Also has been re-scheduled for ticking in the next wave + // Also has been re-scheduled for ticking in the next wave, so no marking is needed return; } - + } + + if (SpreadFurther && (NewMeta < 8)) + { // Spread to the neighbors: - SpreadToNeighbor(a_BlockX - 1, a_BlockY, a_BlockZ, Area, NewMeta); - SpreadToNeighbor(a_BlockX + 1, a_BlockY, a_BlockZ, Area, NewMeta); - SpreadToNeighbor(a_BlockX, a_BlockY, a_BlockZ - 1, Area, NewMeta); - SpreadToNeighbor(a_BlockX, a_BlockY, a_BlockZ + 1, Area, NewMeta); + SpreadToNeighbor(a_Chunk, a_RelX - 1, a_RelY, a_RelZ, NewMeta); + SpreadToNeighbor(a_Chunk, a_RelX + 1, a_RelY, a_RelZ, NewMeta); + SpreadToNeighbor(a_Chunk, a_RelX, a_RelY, a_RelZ - 1, NewMeta); + SpreadToNeighbor(a_Chunk, a_RelX, a_RelY, a_RelZ + 1, NewMeta); } // Mark as processed: - m_World.FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, m_StationaryFluidBlock, MyMeta); + a_Chunk->FastSetBlock(a_RelX, a_RelY, a_RelZ, m_StationaryFluidBlock, MyMeta); } -bool cFloodyFluidSimulator::CheckTributaries(int a_BlockX, int a_BlockY, int a_BlockZ, const cBlockArea & a_Area, NIBBLETYPE a_MyMeta) +bool cFloodyFluidSimulator::CheckTributaries(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_MyMeta) { - bool IsFed = false; - int y = (a_BlockY > 0) ? 1 : 0; // Relative y-coord of this block in Area - // If we have a section above, check if there's fluid above this block that would feed it: - if (a_BlockY < cChunkDef::Height - 1) + if (a_RelY < cChunkDef::Height - 1) { - IsFed = IsAnyFluidBlock(a_Area.GetRelBlockType(1, 2, 1)); + if (IsAnyFluidBlock(a_Chunk->GetBlock(a_RelX, a_RelY + 1, a_RelZ))) + { + // This block is fed from above, no more processing needed + return false; + } } - // If not fed from above, check if there's a feed from the side (but not if it's a downward-flowing block): - if (!IsFed && (a_MyMeta != 8)) + // Not fed from above, check if there's a feed from the side (but not if it's a downward-flowing block): + if (a_MyMeta != 8) { - IsFed = ( - (IsAllowedBlock(a_Area.GetRelBlockType(0, y, 1)) && IsHigherMeta(a_Area.GetRelBlockMeta(0, y, 1), a_MyMeta)) || - (IsAllowedBlock(a_Area.GetRelBlockType(2, y, 1)) && IsHigherMeta(a_Area.GetRelBlockMeta(2, y, 1), a_MyMeta)) || - (IsAllowedBlock(a_Area.GetRelBlockType(1, y, 0)) && IsHigherMeta(a_Area.GetRelBlockMeta(1, y, 0), a_MyMeta)) || - (IsAllowedBlock(a_Area.GetRelBlockType(1, y, 2)) && IsHigherMeta(a_Area.GetRelBlockMeta(1, y, 2), a_MyMeta)) - ); - } - - // If not fed, decrease by m_Falloff levels: - if (!IsFed) - { - if (a_MyMeta >= 8) + BLOCKTYPE BlockType; + NIBBLETYPE BlockMeta; + static const Vector3i Coords[] = { - FLOG(" Not fed and downwards, turning into non-downwards meta %d", m_Falloff); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, m_StationaryFluidBlock, m_Falloff); - } - else + Vector3i( 1, 0, 0), + Vector3i(-1, 0, 0), + Vector3i( 0, 0, 1), + Vector3i( 0, 0, -1), + } ; + for (int i = 0; i < ARRAYCOUNT(Coords); i++) { - a_MyMeta += m_Falloff; - if (a_MyMeta < 8) + if (!a_Chunk->UnboundedRelGetBlock(a_RelX + Coords[i].x, a_RelY, a_RelZ + Coords[i].z, BlockType, BlockMeta)) { - FLOG(" Not fed, decreasing from %d to %d", a_MyMeta, a_MyMeta + m_Falloff); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, m_StationaryFluidBlock, a_MyMeta); + continue; } - else + if (IsAllowedBlock(BlockType) && IsHigherMeta(BlockMeta, a_MyMeta)) { - FLOG(" Not fed, meta %d, erasing altogether", a_MyMeta); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0); + // This block is fed, no more processing needed + return false; } + } // for i - Coords[] + } // if not fed from above + + // Block is not fed, decrease by m_Falloff levels: + if (a_MyMeta >= 8) + { + FLOG(" Not fed and downwards, turning into non-downwards meta %d", m_Falloff); + a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, m_StationaryFluidBlock, m_Falloff); + } + else + { + a_MyMeta += m_Falloff; + if (a_MyMeta < 8) + { + FLOG(" Not fed, decreasing from %d to %d", a_MyMeta - m_Falloff, a_MyMeta); + a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, m_StationaryFluidBlock, a_MyMeta); + } + else + { + FLOG(" Not fed, meta %d, erasing altogether", a_MyMeta); + a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_AIR, 0); } - return true; } - return false; + return true; } -void cFloodyFluidSimulator::SpreadToNeighbor(int a_BlockX, int a_BlockY, int a_BlockZ, const cBlockArea & a_Area, NIBBLETYPE a_NewMeta) +void cFloodyFluidSimulator::SpreadToNeighbor(cChunk * a_NearChunk, int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_NewMeta) { ASSERT(a_NewMeta <= 8); // Invalid meta values ASSERT(a_NewMeta > 0); // Source blocks aren't spread - BLOCKTYPE Block = a_Area.GetBlockType(a_BlockX, a_BlockY, a_BlockZ); + BLOCKTYPE BlockType; + NIBBLETYPE BlockMeta; + if (!a_NearChunk->UnboundedRelGetBlock(a_RelX, a_RelY, a_RelZ, BlockType, BlockMeta)) + { + // Chunk not available + return; + } - if (IsAllowedBlock(Block)) + if (IsAllowedBlock(BlockType)) { - NIBBLETYPE Meta = a_Area.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ); - if ((Meta == a_NewMeta) || IsHigherMeta(Meta, a_NewMeta)) + if ((BlockMeta == a_NewMeta) || IsHigherMeta(BlockMeta, a_NewMeta)) { // Don't spread there, there's already a higher or same level there return; @@ -192,15 +200,15 @@ void cFloodyFluidSimulator::SpreadToNeighbor(int a_BlockX, int a_BlockY, int a_B // Check water - lava interaction: if (m_FluidBlock == E_BLOCK_LAVA) { - if (IsBlockWater(Block)) + if (IsBlockWater(BlockType)) { // Lava flowing into water, change to stone / cobblestone based on direction: BLOCKTYPE NewBlock = (a_NewMeta == 8) ? E_BLOCK_STONE : E_BLOCK_COBBLESTONE; FLOG(" Lava flowing into water, turning water at {%d, %d, %d} into stone", - a_BlockX, a_BlockY, a_BlockZ, + a_RelX, a_RelY, a_RelZ, ItemTypeToString(NewBlock).c_str() ); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, NewBlock, 0); + a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0); // TODO: Sound effect @@ -209,14 +217,14 @@ void cFloodyFluidSimulator::SpreadToNeighbor(int a_BlockX, int a_BlockY, int a_B } else if (m_FluidBlock == E_BLOCK_WATER) { - if (IsBlockLava(Block)) + if (IsBlockLava(BlockType)) { // Water flowing into lava, change to cobblestone / obsidian based on dest block: - BLOCKTYPE NewBlock = (a_Area.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) == 0) ? E_BLOCK_OBSIDIAN : E_BLOCK_COBBLESTONE; + BLOCKTYPE NewBlock = (BlockMeta == 0) ? E_BLOCK_OBSIDIAN : E_BLOCK_COBBLESTONE; FLOG(" Water flowing into lava, turning lava at {%d, %d, %d} into %s", - a_BlockX, a_BlockY, a_BlockZ, ItemTypeToString(NewBlock).c_str() + a_RelX, a_RelY, a_RelZ, ItemTypeToString(NewBlock).c_str() ); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, NewBlock, 0); + a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0); // TODO: Sound effect @@ -228,52 +236,61 @@ void cFloodyFluidSimulator::SpreadToNeighbor(int a_BlockX, int a_BlockY, int a_B ASSERT(!"Unknown fluid!"); } - if (!IsPassableForFluid(Block)) + if (!IsPassableForFluid(BlockType)) { // Can't spread there return; } // Wash away the block there, if possible: - if (CanWashAway(Block)) + if (CanWashAway(BlockType)) { - cBlockHandler * Handler = BlockHandler(Block); + cBlockHandler * Handler = BlockHandler(BlockType); if (Handler->DoesDropOnUnsuitable()) { - Handler->DropBlock(&m_World, NULL, a_BlockX, a_BlockY, a_BlockZ); + Handler->DropBlock( + &m_World, NULL, + a_NearChunk->GetPosX() * cChunkDef::Width + a_RelX, + a_RelY, + a_NearChunk->GetPosZ() * cChunkDef::Width + a_RelZ + ); } - } + } // if (CanWashAway) // Spread: - FLOG(" Spreading to {%d, %d, %d} with meta %d", a_BlockX, a_BlockY, a_BlockZ, a_NewMeta); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, m_FluidBlock, a_NewMeta); + FLOG(" Spreading to {%d, %d, %d} with meta %d", a_RelX, a_RelY, a_RelZ, a_NewMeta); + a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, m_FluidBlock, a_NewMeta); } -bool cFloodyFluidSimulator::CheckNeighborsForSource(int a_BlockX, int a_BlockY, int a_BlockZ, const cBlockArea & a_Area) +bool cFloodyFluidSimulator::CheckNeighborsForSource(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ) { FLOG(" Checking neighbors for source creation"); static const Vector3i NeighborCoords[] = { - Vector3i(-1, 0, 0), - Vector3i( 1, 0, 0), - Vector3i( 0, 0,-1), - Vector3i( 0, 0, 1), + Vector3i(-1, 0, 0), + Vector3i( 1, 0, 0), + Vector3i( 0, 0, -1), + Vector3i( 0, 0, 1), } ; int NumNeeded = m_NumNeighborsForSource; for (int i = 0; i < ARRAYCOUNT(NeighborCoords); i++) { - int x = a_BlockX + NeighborCoords[i].x; - int y = a_BlockY + NeighborCoords[i].y; - int z = a_BlockZ + NeighborCoords[i].z; + int x = a_RelX + NeighborCoords[i].x; + int y = a_RelY + NeighborCoords[i].y; + int z = a_RelZ + NeighborCoords[i].z; BLOCKTYPE BlockType; NIBBLETYPE BlockMeta; - a_Area.GetBlockTypeMeta(x, y, z, BlockType, BlockMeta); + if (!a_Chunk->UnboundedRelGetBlock(x, y, z, BlockType, BlockMeta)) + { + // Neighbor not available, skip it + continue; + } FLOG(" Neighbor at {%d, %d, %d}: %s", x, y, z, ItemToFullString(cItem(BlockType, 1, BlockMeta)).c_str()); if ((BlockMeta == 0) && IsAnyFluidBlock(BlockType)) { @@ -283,7 +300,7 @@ bool cFloodyFluidSimulator::CheckNeighborsForSource(int a_BlockX, int a_BlockY, { // Found enough, turn into a source and bail out FLOG(" Found enough neighbor sources, turning into a source"); - m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, m_FluidBlock, 0); + a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, m_FluidBlock, 0); return true; } } -- cgit v1.2.3