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)
);
BLOCKTYPE MyBlock; NIBBLETYPE MyMeta;
a_Chunk->GetBlockTypeMeta(a_RelX, a_RelY, a_RelZ, MyBlock, MyMeta);
if (!IsAnyFluidBlock(MyBlock))
{
// Can happen - if a block is scheduled for simulating and gets replaced in the meantime.
FLOG(" BadBlockType exit");
return;
}
// When in contact with water, lava should harden
if (HardenBlock(a_Chunk, a_RelX, a_RelY, a_RelZ, MyBlock, MyMeta))
{
// Block was changed, bail out
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);
// Source blocks spread both downwards and sideways
if (MyMeta != 0)
{
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:
SpreadXZ(a_Chunk, a_RelX, a_RelY, a_RelZ, NewMeta);
}
// Mark as processed:
a_Chunk->FastSetBlock(a_RelX, a_RelY, a_RelZ, m_StationaryFluidBlock, MyMeta);
}
bool cFluidSimulator::IsSolidBlock(BLOCKTYPE a_BlockType)
{
return !IsPassableForFluid(a_BlockType);
}
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
a_NearChunk = a_NearChunk->GetRelNeighborChunkAdjustCoords(a_RelX, a_RelZ);
if ((a_NearChunk == NULL) || (!a_NearChunk->IsValid()))
{
// Chunk not available
return;
}
const int BlockX = a_NearChunk->GetPosX() * cChunkDef::Width + a_RelX;
const int BlockZ = a_NearChunk->GetPosZ() * cChunkDef::Width + a_RelZ;
BLOCKTYPE BlockType;
NIBBLETYPE BlockMeta;
a_NearChunk->GetBlockTypeMeta(a_RelX, a_RelY, a_RelZ, BlockType, BlockMeta);
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->SetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0);
a_NearChunk->BroadcastSoundEffect("random.fizz", BlockX * 8, a_RelY * 8, BlockZ * 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->SetBlock(a_RelX, a_RelY, a_RelZ, NewBlock, 0);
a_NearChunk->BroadcastSoundEffect("random.fizz", BlockX * 8, a_RelY * 8, BlockZ * 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())
{
cChunkInterface ChunkInterface(m_World.GetChunkMap());
cBlockInServerPluginInterface PluginInterface(m_World);
Handler->DropBlock(
ChunkInterface,
m_World,
PluginInterface,
NULL,
BlockX,
a_RelY,
BlockZ
);
}
} // if (CanWashAway)
// Spread:
FLOG(" Spreading to {%d, %d, %d} with meta %d", BlockX, a_RelY, BlockZ, a_NewMeta);
a_NearChunk->SetBlock(a_RelX, a_RelY, a_RelZ, m_FluidBlock, a_NewMeta);
m_World.GetSimulatorManager()->WakeUp(BlockX, a_RelY, BlockZ, a_NearChunk);
HardenBlock(a_NearChunk, a_RelX, a_RelY, a_RelZ, m_FluidBlock, a_NewMeta);
}