302 lines
8.1 KiB
C++
302 lines
8.1 KiB
C++
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#include "Globals.h"
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#include "BlockPiston.h"
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#include "../Item.h"
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#include "../World.h"
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#include "../Entities/Player.h"
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#include "BlockInServerPluginInterface.h"
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#include "ChunkInterface.h"
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#include <vector>
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#include <array>
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#define AddPistonDir(x, y, z, dir, amount) \
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switch (dir & 0x07) \
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{ \
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case 0: (y) -= (amount); break; \
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case 1: (y) += (amount); break; \
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case 2: (z) -= (amount); break; \
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case 3: (z) += (amount); break; \
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case 4: (x) -= (amount); break; \
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case 5: (x) += (amount); break; \
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default: \
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{ \
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LOGWARNING("%s: invalid direction %d, ignoring", __FUNCTION__, dir & 0x07); \
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break; \
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} \
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}
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#define PISTON_MAX_PUSH_DISTANCE 12
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cBlockPistonHandler::cBlockPistonHandler(BLOCKTYPE a_BlockType)
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: cBlockHandler(a_BlockType)
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{
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}
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void cBlockPistonHandler::OnDestroyed(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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NIBBLETYPE OldMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
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int newX = a_BlockX;
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int newY = a_BlockY;
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int newZ = a_BlockZ;
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AddPistonDir(newX, newY, newZ, OldMeta, 1);
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if (a_ChunkInterface.GetBlock(newX, newY, newZ) == E_BLOCK_PISTON_EXTENSION)
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{
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a_ChunkInterface.SetBlock(newX, newY, newZ, E_BLOCK_AIR, 0);
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}
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}
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void cBlockPistonHandler::ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta)
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{
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// Returning Piston Item without Direction-Metavalue
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a_Pickups.push_back(cItem(m_BlockType, 1));
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}
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bool cBlockPistonHandler::GetPlacementBlockTypeMeta(
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cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
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int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
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int a_CursorX, int a_CursorY, int a_CursorZ,
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BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
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)
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{
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a_BlockType = m_BlockType;
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a_BlockMeta = RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch());
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return true;
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}
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bool cBlockPistonHandler::CanPushBlock(
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int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World, bool a_RequirePushable,
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std::unordered_set<Vector3i, VectorHasher<int>> & a_BlocksPushed, NIBBLETYPE a_PistonMeta
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)
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{
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const static std::array<Vector3i, 6> pushingDirs = {{ Vector3i(-1, 0, 0), Vector3i(1, 0, 0), Vector3i(0, -1, 0), Vector3i(0, 1, 0),
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Vector3i(0, 0, -1), Vector3i(0, 0, 1) }};
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BLOCKTYPE currBlock;
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NIBBLETYPE currMeta;
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a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, currBlock, currMeta);
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if (currBlock == E_BLOCK_AIR)
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{
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// Air can be pushed
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return true;
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}
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if (!CanPush(currBlock, currMeta))
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{
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return !a_RequirePushable;
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}
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if (a_BlocksPushed.size() >= PISTON_MAX_PUSH_DISTANCE)
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{
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return false;
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}
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if (!a_BlocksPushed.emplace(a_BlockX, a_BlockY, a_BlockZ).second || cBlockInfo::IsPistonBreakable(currBlock))
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{
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return true; // Element exist already
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}
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if(currBlock == E_BLOCK_SLIME_BLOCK)
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{
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// Try to push the other directions
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for(const Vector3i & testDir : pushingDirs)
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{
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if(!CanPushBlock(a_BlockX + testDir.x, a_BlockY + testDir.y, a_BlockZ + testDir.z, a_World, false, a_BlocksPushed, a_PistonMeta))
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{
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return false;
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}
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}
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}
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AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, a_PistonMeta, 1);
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return CanPushBlock(a_BlockX, a_BlockY, a_BlockZ, a_World, true, a_BlocksPushed, a_PistonMeta);
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}
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void cBlockPistonHandler::ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World)
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{
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BLOCKTYPE pistonBlock;
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NIBBLETYPE pistonMeta;
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a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta);
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if (IsExtended(pistonMeta))
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{
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// Already extended, bail out
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return;
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}
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int moveX = a_BlockX;
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int moveY = a_BlockY;
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int moveZ = a_BlockZ;
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AddPistonDir(moveX, moveY, moveZ, pistonMeta, 1);
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std::unordered_set<Vector3i, VectorHasher<int>> blocksPushed;
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if (!CanPushBlock(moveX, moveY, moveZ, a_World, true, blocksPushed, pistonMeta))
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{
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// Can't push anything, bail out
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return;
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}
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Vector3i pistonMoveVec;
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AddPistonDir(pistonMoveVec.x, pistonMoveVec.y, pistonMoveVec.z, pistonMeta, 1);
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std::vector<Vector3i> sortedBlocks(blocksPushed.begin(), blocksPushed.end());
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std::sort(sortedBlocks.begin(), sortedBlocks.end(), [pistonMoveVec](const Vector3i & a, const Vector3i & b)
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{
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return a.Dot(pistonMoveVec) > b.Dot(pistonMoveVec);
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});
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a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 0, pistonMeta, pistonBlock);
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a_World->BroadcastSoundEffect("tile.piston.out", static_cast<double>(a_BlockX), static_cast<double>(a_BlockY), static_cast<double>(a_BlockZ), 0.5f, 0.7f);
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BLOCKTYPE moveBlock;
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NIBBLETYPE moveMeta;
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for (const Vector3i & moveBlockVec : sortedBlocks)
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{
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moveX = moveBlockVec.x;
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moveY = moveBlockVec.y;
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moveZ = moveBlockVec.z;
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a_World->GetBlockTypeMeta(moveX, moveY, moveZ, moveBlock, moveMeta);
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a_World->SetBlock(moveX, moveY, moveZ, E_BLOCK_AIR, 0);
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AddPistonDir(moveX, moveY, moveZ, pistonMeta, 1);
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if (cBlockInfo::IsPistonBreakable(moveBlock))
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{
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cBlockHandler * Handler = BlockHandler(moveBlock);
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if (Handler->DoesDropOnUnsuitable())
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{
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cChunkInterface ChunkInterface(a_World->GetChunkMap());
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cBlockInServerPluginInterface PluginInterface(*a_World);
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Handler->DropBlock(ChunkInterface, *a_World, PluginInterface, nullptr, moveX, moveY, moveZ);
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}
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} else
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{
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a_World->SetBlock(moveX, moveY, moveZ, moveBlock, moveMeta);
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}
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}
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a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta | 0x8);
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AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1);
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a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_PISTON_EXTENSION, pistonMeta | (IsSticky(pistonBlock) ? 8 : 0));
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}
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void cBlockPistonHandler::RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World)
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{
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BLOCKTYPE pistonBlock;
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NIBBLETYPE pistonMeta;
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a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta);
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if (!IsExtended(pistonMeta))
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{
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// Already retracted, bail out
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return;
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}
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// Check the extension:
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AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1);
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if (a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_PISTON_EXTENSION)
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{
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LOGD("%s: Piston without an extension - still extending, or just in an invalid state?", __FUNCTION__);
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return;
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}
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AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1);
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a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta & ~(8));
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a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 1, pistonMeta & ~(8), pistonBlock);
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a_World->BroadcastSoundEffect("tile.piston.in", static_cast<double>(a_BlockX), static_cast<double>(a_BlockY), static_cast<double>(a_BlockZ), 0.5f, 0.7f);
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AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1);
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// Retract the extension, pull block if appropriate
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if (IsSticky(pistonBlock))
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{
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int tempx = a_BlockX, tempy = a_BlockY, tempz = a_BlockZ;
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AddPistonDir(tempx, tempy, tempz, pistonMeta, 1);
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BLOCKTYPE tempBlock;
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NIBBLETYPE tempMeta;
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a_World->GetBlockTypeMeta(tempx, tempy, tempz, tempBlock, tempMeta);
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if (CanPull(tempBlock, tempMeta))
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{
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// Pull the block
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a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, tempBlock, tempMeta);
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a_World->SetBlock(tempx, tempy, tempz, E_BLOCK_AIR, 0);
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return;
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}
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}
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// Retract without pulling
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a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// cBlockPistonHeadHandler:
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cBlockPistonHeadHandler::cBlockPistonHeadHandler(void) :
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super(E_BLOCK_PISTON_EXTENSION)
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{
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}
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void cBlockPistonHeadHandler::OnDestroyedByPlayer(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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NIBBLETYPE OldMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
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int newX = a_BlockX;
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int newY = a_BlockY;
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int newZ = a_BlockZ;
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AddPistonDir(newX, newY, newZ, OldMeta, -1);
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BLOCKTYPE Block = a_ChunkInterface.GetBlock(newX, newY, newZ);
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if ((Block == E_BLOCK_STICKY_PISTON) || (Block == E_BLOCK_PISTON))
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{
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a_ChunkInterface.DigBlock(a_WorldInterface, newX, newY, newZ);
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if (a_Player->IsGameModeCreative())
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{
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return; // No pickups if creative
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}
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cItems Pickups;
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Pickups.push_back(cItem(Block, 1));
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a_WorldInterface.SpawnItemPickups(Pickups, a_BlockX + 0.5, a_BlockY + 0.5, a_BlockZ + 0.5);
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}
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}
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