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-rw-r--r--source/Simulator/FloodyFluidSimulator.cpp330
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diff --git a/source/Simulator/FloodyFluidSimulator.cpp b/source/Simulator/FloodyFluidSimulator.cpp
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--- a/source/Simulator/FloodyFluidSimulator.cpp
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@@ -1,330 +0,0 @@
-
-// FloodyFluidSimulator.cpp
-
-// Interfaces to the cFloodyFluidSimulator that represents a fluid simulator that tries to flood everything :)
-// http://forum.mc-server.org/showthread.php?tid=565
-
-#include "Globals.h"
-
-#include "FloodyFluidSimulator.h"
-#include "../World.h"
-#include "../Chunk.h"
-#include "../BlockArea.h"
-#include "../Blocks/BlockHandler.h"
-
-
-
-
-
-// Enable or disable detailed logging
-#if 0
- #define FLOG LOGD
-#else
- #define FLOG(...)
-#endif
-
-
-
-
-
-cFloodyFluidSimulator::cFloodyFluidSimulator(
- 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_TickDelay),
- m_Falloff(a_Falloff),
- m_NumNeighborsForSource(a_NumNeighborsForSource)
-{
-}
-
-
-
-
-
-void cFloodyFluidSimulator::SimulateBlock(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ)
-{
- FLOG("Simulating block {%d, %d, %d}: block %d, meta %d",
- a_Chunk->GetPosX() * cChunkDef::Width + a_RelX, a_RelY, a_Chunk->GetPosZ() * cChunkDef::Width + a_RelZ,
- a_Chunk->GetBlock(a_RelX, a_RelY, a_RelZ),
- a_Chunk->GetMeta(a_RelX, a_RelY, a_RelZ)
- );
-
- 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(" BadBlockType exit");
- return;
- }
-
- if (MyMeta != 0)
- {
- // Source blocks aren't checked for tributaries, others are.
- if (CheckTributaries(a_Chunk, a_RelX, a_RelY, a_RelZ, MyMeta))
- {
- // Has no tributary, has been decreased (in CheckTributaries()),
- // no more processing needed (neighbors have been scheduled by the decrease)
- FLOG(" CheckTributaries exit");
- return;
- }
- }
-
- // New meta for the spreading to neighbors:
- // 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);
- 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:
- 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_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, so no marking is needed
- return;
- }
- }
-
- if (SpreadFurther && (NewMeta < 8))
- {
- // Spread to the neighbors:
- 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:
- a_Chunk->FastSetBlock(a_RelX, a_RelY, a_RelZ, m_StationaryFluidBlock, MyMeta);
-}
-
-
-
-
-
-bool cFloodyFluidSimulator::CheckTributaries(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_MyMeta)
-{
- // If we have a section above, check if there's fluid above this block that would feed it:
- if (a_RelY < cChunkDef::Height - 1)
- {
- if (IsAnyFluidBlock(a_Chunk->GetBlock(a_RelX, a_RelY + 1, a_RelZ)))
- {
- // This block is fed from above, no more processing needed
- FLOG(" Fed from above");
- return false;
- }
- }
-
- // 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)
- {
- BLOCKTYPE BlockType;
- NIBBLETYPE BlockMeta;
- static const Vector3i Coords[] =
- {
- Vector3i( 1, 0, 0),
- Vector3i(-1, 0, 0),
- Vector3i( 0, 0, 1),
- Vector3i( 0, 0, -1),
- } ;
- for (int i = 0; i < ARRAYCOUNT(Coords); i++)
- {
- if (!a_Chunk->UnboundedRelGetBlock(a_RelX + Coords[i].x, a_RelY, a_RelZ + Coords[i].z, BlockType, BlockMeta))
- {
- continue;
- }
- if (IsAllowedBlock(BlockType) && IsHigherMeta(BlockMeta, a_MyMeta))
- {
- // This block is fed, no more processing needed
- FLOG(" Fed from {%d, %d, %d}, type %d, meta %d",
- a_Chunk->GetPosX() * cChunkDef::Width + a_RelX + Coords[i].x,
- a_RelY,
- a_Chunk->GetPosZ() * cChunkDef::Width + a_RelZ + Coords[i].z,
- BlockType, BlockMeta
- );
- 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;
-}
-
-
-
-
-
-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 BlockType;
- NIBBLETYPE BlockMeta;
- if (!a_NearChunk->UnboundedRelGetBlock(a_RelX, a_RelY, a_RelZ, BlockType, BlockMeta))
- {
- // Chunk not available
- return;
- }
-
- if (IsAllowedBlock(BlockType))
- {
- if ((BlockMeta == a_NewMeta) || IsHigherMeta(BlockMeta, a_NewMeta))
- {
- // Don't spread there, there's already a higher or same level there
- return;
- }
- }
-
- // Check water - lava interaction:
- if (m_FluidBlock == E_BLOCK_LAVA)
- {
- 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 rel {%d, %d, %d} into stone",
- a_RelX, a_RelY, a_RelZ,
- ItemTypeToString(NewBlock).c_str()
- );
- a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0);
- m_World.BroadcastSoundEffect("random.fizz", a_RelX * 8, a_RelY * 8, a_RelZ * 8, 0.5f, 1.5f);
- return;
- }
- }
- else if (m_FluidBlock == E_BLOCK_WATER)
- {
- if (IsBlockLava(BlockType))
- {
- // Water flowing into lava, change to cobblestone / obsidian based on dest block:
- BLOCKTYPE NewBlock = (BlockMeta == 0) ? E_BLOCK_OBSIDIAN : E_BLOCK_COBBLESTONE;
- FLOG(" Water flowing into lava, turning lava at rel {%d, %d, %d} into %s",
- a_RelX, a_RelY, a_RelZ, ItemTypeToString(NewBlock).c_str()
- );
- a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0);
- m_World.BroadcastSoundEffect("random.fizz", a_RelX * 8, a_RelY * 8, a_RelZ * 8, 0.5f, 1.5f);
- return;
- }
- }
- else
- {
- ASSERT(!"Unknown fluid!");
- }
-
- if (!IsPassableForFluid(BlockType))
- {
- // Can't spread there
- return;
- }
-
- // Wash away the block there, if possible:
- if (CanWashAway(BlockType))
- {
- cBlockHandler * Handler = BlockHandler(BlockType);
- if (Handler->DoesDropOnUnsuitable())
- {
- 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_NearChunk->GetPosX() * cChunkDef::Width + a_RelX,
- a_RelY,
- a_NearChunk->GetPosZ() * cChunkDef::Width + a_RelZ,
- a_NewMeta
- );
- a_NearChunk->UnboundedRelSetBlock(a_RelX, a_RelY, a_RelZ, m_FluidBlock, a_NewMeta);
-}
-
-
-
-
-
-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),
- } ;
-
- int NumNeeded = m_NumNeighborsForSource;
- for (int i = 0; i < ARRAYCOUNT(NeighborCoords); i++)
- {
- 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;
- 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))
- {
- NumNeeded--;
- // FLOG(" Found a neighbor source at {%d, %d, %d}, NumNeeded := %d", x, y, z, NumNeeded);
- if (NumNeeded == 0)
- {
- // Found enough, turn into a source and bail out
- // FLOG(" Found enough neighbor sources, turning into a source");
- a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, m_FluidBlock, 0);
- return true;
- }
- }
- }
- // FLOG(" Not enough neighbors for turning into a source, NumNeeded = %d", NumNeeded);
- return false;
-}
-
-
-
-