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authorAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
committerAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
commit675b4aa878f16291ce33fced48a2bc7425f635ae (patch)
tree409914df27a98f65adf866da669429c4de141b6f /src/Simulator/SandSimulator.cpp
parentLineBlockTracer: Using the coord-based block faces. (diff)
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Diffstat (limited to 'src/Simulator/SandSimulator.cpp')
-rw-r--r--src/Simulator/SandSimulator.cpp309
1 files changed, 309 insertions, 0 deletions
diff --git a/src/Simulator/SandSimulator.cpp b/src/Simulator/SandSimulator.cpp
new file mode 100644
index 000000000..87fb83357
--- /dev/null
+++ b/src/Simulator/SandSimulator.cpp
@@ -0,0 +1,309 @@
+
+#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "SandSimulator.h"
+#include "../World.h"
+#include "../BlockID.h"
+#include "../Defines.h"
+#include "../Entities/FallingBlock.h"
+#include "../Chunk.h"
+
+
+
+
+
+cSandSimulator::cSandSimulator(cWorld & a_World, cIniFile & a_IniFile) :
+ cSimulator(a_World),
+ m_TotalBlocks(0)
+{
+ m_IsInstantFall = a_IniFile.GetValueSetB("Physics", "SandInstantFall", false);
+}
+
+
+
+
+
+void cSandSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, cChunk * a_Chunk)
+{
+ cSandSimulatorChunkData & ChunkData = a_Chunk->GetSandSimulatorData();
+ if (ChunkData.empty())
+ {
+ return;
+ }
+
+ int BaseX = a_Chunk->GetPosX() * cChunkDef::Width;
+ int BaseZ = a_Chunk->GetPosZ() * cChunkDef::Width;
+ for (cSandSimulatorChunkData::const_iterator itr = ChunkData.begin(), end = ChunkData.end(); itr != end; ++itr)
+ {
+ BLOCKTYPE BlockType = a_Chunk->GetBlock(itr->x, itr->y, itr->z);
+ if (!IsAllowedBlock(BlockType) || (itr->y <= 0))
+ {
+ continue;
+ }
+
+ BLOCKTYPE BlockBelow = (itr->y > 0) ? a_Chunk->GetBlock(itr->x, itr->y - 1, itr->z) : E_BLOCK_AIR;
+ if (CanStartFallingThrough(BlockBelow))
+ {
+ if (m_IsInstantFall)
+ {
+ DoInstantFall(a_Chunk, itr->x, itr->y, itr->z);
+ continue;
+ }
+ Vector3i Pos;
+ Pos.x = itr->x + BaseX;
+ Pos.y = itr->y;
+ Pos.z = itr->z + BaseZ;
+ /*
+ LOGD(
+ "Creating a falling block at {%d, %d, %d} of type %s, block below: %s",
+ Pos.x, Pos.y, Pos.z, ItemTypeToString(BlockType).c_str(), ItemTypeToString(BlockBelow).c_str()
+ );
+ */
+ cFallingBlock * FallingBlock = new cFallingBlock(Pos, BlockType, a_Chunk->GetMeta(itr->x, itr->y, itr->z));
+ FallingBlock->Initialize(&m_World);
+ a_Chunk->SetBlock(itr->x, itr->y, itr->z, E_BLOCK_AIR, 0);
+ }
+ }
+ m_TotalBlocks -= ChunkData.size();
+ ChunkData.clear();
+}
+
+
+
+
+
+bool cSandSimulator::IsAllowedBlock(BLOCKTYPE a_BlockType)
+{
+ switch (a_BlockType)
+ {
+ case E_BLOCK_SAND:
+ case E_BLOCK_GRAVEL:
+ case E_BLOCK_ANVIL:
+ case E_BLOCK_DRAGON_EGG:
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+
+
+
+
+void cSandSimulator::AddBlock(int a_BlockX, int a_BlockY, int a_BlockZ, cChunk * a_Chunk)
+{
+ if ((a_Chunk == NULL) || !a_Chunk->IsValid())
+ {
+ return;
+ }
+ int RelX = a_BlockX - a_Chunk->GetPosX() * cChunkDef::Width;
+ int RelZ = a_BlockZ - a_Chunk->GetPosZ() * cChunkDef::Width;
+ if (!IsAllowedBlock(a_Chunk->GetBlock(RelX, a_BlockY, RelZ)))
+ {
+ return;
+ }
+
+ // Check for duplicates:
+ cSandSimulatorChunkData & ChunkData = a_Chunk->GetSandSimulatorData();
+ for (cSandSimulatorChunkData::iterator itr = ChunkData.begin(); itr != ChunkData.end(); ++itr)
+ {
+ if ((itr->x == RelX) && (itr->y == a_BlockY) && (itr->z == RelZ))
+ {
+ return;
+ }
+ }
+
+ m_TotalBlocks += 1;
+ ChunkData.push_back(cCoordWithInt(RelX, a_BlockY, RelZ));
+}
+
+
+
+
+
+bool cSandSimulator::CanStartFallingThrough(BLOCKTYPE a_BlockType)
+{
+ // Please keep the list alpha-sorted
+ switch (a_BlockType)
+ {
+ case E_BLOCK_AIR:
+ case E_BLOCK_FIRE:
+ case E_BLOCK_LAVA:
+ case E_BLOCK_SNOW:
+ case E_BLOCK_STATIONARY_LAVA:
+ case E_BLOCK_STATIONARY_WATER:
+ case E_BLOCK_WATER:
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+
+
+
+
+bool cSandSimulator::CanContinueFallThrough(BLOCKTYPE a_BlockType)
+{
+ // Please keep the list alpha-sorted
+ switch (a_BlockType)
+ {
+ case E_BLOCK_AIR:
+ case E_BLOCK_BROWN_MUSHROOM:
+ case E_BLOCK_COBWEB:
+ case E_BLOCK_CROPS:
+ case E_BLOCK_DEAD_BUSH:
+ case E_BLOCK_DETECTOR_RAIL:
+ case E_BLOCK_FIRE:
+ case E_BLOCK_FLOWER_POT:
+ case E_BLOCK_LAVA:
+ case E_BLOCK_LEVER:
+ case E_BLOCK_MINECART_TRACKS:
+ case E_BLOCK_MELON_STEM:
+ case E_BLOCK_POWERED_RAIL:
+ case E_BLOCK_PUMPKIN_STEM:
+ case E_BLOCK_REDSTONE_REPEATER_OFF:
+ case E_BLOCK_REDSTONE_REPEATER_ON:
+ case E_BLOCK_REDSTONE_TORCH_OFF:
+ case E_BLOCK_REDSTONE_TORCH_ON:
+ case E_BLOCK_REDSTONE_WIRE:
+ case E_BLOCK_RED_MUSHROOM:
+ case E_BLOCK_RED_ROSE:
+ case E_BLOCK_SIGN_POST:
+ case E_BLOCK_SNOW:
+ case E_BLOCK_STATIONARY_LAVA:
+ case E_BLOCK_STATIONARY_WATER:
+ case E_BLOCK_STONE_BUTTON:
+ case E_BLOCK_STONE_PRESSURE_PLATE:
+ case E_BLOCK_TALL_GRASS:
+ case E_BLOCK_TORCH:
+ case E_BLOCK_TRAPDOOR:
+ case E_BLOCK_TRIPWIRE:
+ case E_BLOCK_TRIPWIRE_HOOK:
+ case E_BLOCK_WALLSIGN:
+ case E_BLOCK_WATER:
+ case E_BLOCK_WOODEN_BUTTON:
+ case E_BLOCK_WOODEN_PRESSURE_PLATE:
+ case E_BLOCK_YELLOW_FLOWER:
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+
+
+
+
+bool cSandSimulator::IsReplacedOnRematerialization(BLOCKTYPE a_BlockType)
+{
+ // Please keep the list alpha-sorted
+ switch (a_BlockType)
+ {
+ case E_BLOCK_AIR:
+ case E_BLOCK_DEAD_BUSH:
+ case E_BLOCK_FIRE:
+ case E_BLOCK_LAVA:
+ case E_BLOCK_SNOW:
+ case E_BLOCK_STATIONARY_LAVA:
+ case E_BLOCK_STATIONARY_WATER:
+ case E_BLOCK_TALL_GRASS:
+ case E_BLOCK_WATER:
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+
+
+
+
+bool cSandSimulator::DoesBreakFallingThrough(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+ switch (a_BlockType)
+ {
+ case E_BLOCK_STONE_SLAB:
+ case E_BLOCK_WOODEN_SLAB:
+ {
+ return ((a_BlockMeta & 0x08) == 0); // Only a bottom-slab breaks the block
+ }
+ }
+ return false;
+}
+
+
+
+
+
+void cSandSimulator::FinishFalling(
+ cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ,
+ BLOCKTYPE a_FallingBlockType, NIBBLETYPE a_FallingBlockMeta
+)
+{
+ ASSERT(a_BlockY < cChunkDef::Height);
+
+ BLOCKTYPE CurrentBlockType = a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ);
+ if ((a_FallingBlockType == E_BLOCK_ANVIL) || IsReplacedOnRematerialization(CurrentBlockType))
+ {
+ // Rematerialize the material here:
+ a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, a_FallingBlockType, a_FallingBlockMeta);
+ return;
+ }
+
+ // Create a pickup instead:
+ cItems Pickups;
+ Pickups.Add((ENUM_ITEM_ID)a_FallingBlockType, 1, a_FallingBlockMeta);
+ a_World->SpawnItemPickups(Pickups, (double)a_BlockX + 0.5, (double)a_BlockY + 0.5, (double)a_BlockZ + 0.5);
+}
+
+
+
+
+
+void cSandSimulator::DoInstantFall(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ)
+{
+ // Remove the original block:
+ BLOCKTYPE FallingBlockType;
+ NIBBLETYPE FallingBlockMeta;
+ a_Chunk->GetBlockTypeMeta(a_RelX, a_RelY, a_RelZ, FallingBlockType, FallingBlockMeta);
+ a_Chunk->SetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_AIR, 0);
+
+ // Search for a place to put it:
+ for (int y = a_RelY - 1; y >= 0; y--)
+ {
+ BLOCKTYPE BlockType;
+ NIBBLETYPE BlockMeta;
+ a_Chunk->GetBlockTypeMeta(a_RelX, y, a_RelZ, BlockType, BlockMeta);
+ int BlockY;
+ if (DoesBreakFallingThrough(BlockType, BlockMeta))
+ {
+ BlockY = y;
+ }
+ else if (!CanContinueFallThrough(BlockType))
+ {
+ BlockY = y + 1;
+ }
+ else
+ {
+ // Can fall further down
+ continue;
+ }
+
+ // Finish the fall at the found bottom:
+ int BlockX = a_RelX + a_Chunk->GetPosX() * cChunkDef::Width;
+ int BlockZ = a_RelZ + a_Chunk->GetPosZ() * cChunkDef::Width;
+ FinishFalling(&m_World, BlockX, BlockY, BlockZ, FallingBlockType, FallingBlockMeta);
+ return;
+ }
+
+ // The block just "fell off the world" without leaving a trace
+}
+
+
+
+