diff options
Diffstat (limited to 'src/Blocks')
| -rw-r--r-- | src/Blocks/BlockDoor.cpp | 2 | ||||
| -rw-r--r-- | src/Blocks/BlockDoor.h | 104 | ||||
| -rw-r--r-- | src/Blocks/BlockDropSpenser.h | 4 | ||||
| -rw-r--r-- | src/Blocks/BlockFurnace.h | 4 | ||||
| -rw-r--r-- | src/Blocks/BlockMobHead.h | 28 | ||||
| -rw-r--r-- | src/Blocks/BlockPiston.cpp | 177 | ||||
| -rw-r--r-- | src/Blocks/BlockPiston.h | 134 |
7 files changed, 411 insertions, 42 deletions
diff --git a/src/Blocks/BlockDoor.cpp b/src/Blocks/BlockDoor.cpp index 479c68153..fb2d6f2dc 100644 --- a/src/Blocks/BlockDoor.cpp +++ b/src/Blocks/BlockDoor.cpp @@ -62,7 +62,7 @@ void cBlockDoorHandler::OnCancelRightClick(cChunkInterface & a_ChunkInterface, c a_WorldInterface.SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, a_Player); NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ); - if (Meta & 8) + if (Meta & 0x8) { // Current block is top of the door a_WorldInterface.SendBlockTo(a_BlockX, a_BlockY - 1, a_BlockZ, a_Player); diff --git a/src/Blocks/BlockDoor.h b/src/Blocks/BlockDoor.h index 797fe484c..bc59051c3 100644 --- a/src/Blocks/BlockDoor.h +++ b/src/Blocks/BlockDoor.h @@ -20,12 +20,12 @@ public: virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override; virtual void OnCancelRightClick(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) override; virtual const char * GetStepSound(void) override; - + virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override; virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override; virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override; virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override; - + virtual bool GetPlacementBlockTypeMeta( cChunkInterface & a_ChunkInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, @@ -52,7 +52,7 @@ public: return true; } - + virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override { a_Pickups.push_back(cItem((m_BlockType == E_BLOCK_WOODEN_DOOR) ? E_ITEM_WOODEN_DOOR : E_ITEM_IRON_DOOR, 1, 0)); @@ -77,8 +77,8 @@ public: { return ((a_RelY > 0) && (a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ) != E_BLOCK_AIR)); } - - + + bool CanReplaceBlock(BLOCKTYPE a_BlockType) { switch (a_BlockType) @@ -99,7 +99,7 @@ public: } - /// Converts the player's yaw to placed door's blockmeta + /** Converts the player's yaw to placed door's blockmeta */ inline static NIBBLETYPE PlayerYawToMetaData(double a_Yaw) { ASSERT((a_Yaw >= -180) && (a_Yaw < 180)); @@ -111,67 +111,109 @@ public: } if ((a_Yaw >= 0) && (a_Yaw < 90)) { - return 0x0; + return 0x00; } else if ((a_Yaw >= 180) && (a_Yaw < 270)) { - return 0x2; + return 0x02; } else if ((a_Yaw >= 90) && (a_Yaw < 180)) { - return 0x1; + return 0x01; } else { - return 0x3; + return 0x03; } } - /// Returns true if the specified blocktype is any kind of door + /** Returns true if the specified blocktype is any kind of door */ inline static bool IsDoor(BLOCKTYPE a_Block) { return (a_Block == E_BLOCK_WOODEN_DOOR) || (a_Block == E_BLOCK_IRON_DOOR); } - /// Returns the metadata for the opposite door state (open vs closed) - static NIBBLETYPE ChangeStateMetaData(NIBBLETYPE a_MetaData) + static NIBBLETYPE IsOpen(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ) { - return a_MetaData ^ 4; + NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ); + return ((Meta & 0x04) != 0); } - /// Changes the door at the specified coords from open to close or vice versa - static void ChangeDoor(cChunkInterface & a_ChunkInterface, int a_X, int a_Y, int a_Z) + /** Returns the complete meta composed from the both parts of the door as (TopMeta << 4) | BottomMeta + The coords may point to either part of the door. + The returned value has bit 3 (0x08) set iff the coords point to the top part of the door. + Fails gracefully for (invalid) doors on the world's top and bottom. */ + static NIBBLETYPE GetCompleteDoorMeta(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ) { - NIBBLETYPE OldMetaData = a_ChunkInterface.GetBlockMeta(a_X, a_Y, a_Z); - - a_ChunkInterface.SetBlockMeta(a_X, a_Y, a_Z, ChangeStateMetaData(OldMetaData)); + NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ); - if (OldMetaData & 8) + if ((Meta & 0x08) != 0) { - // Current block is top of the door - BLOCKTYPE BottomBlock = a_ChunkInterface.GetBlock(a_X, a_Y - 1, a_Z); - NIBBLETYPE BottomMeta = a_ChunkInterface.GetBlockMeta(a_X, a_Y - 1, a_Z); - - if (IsDoor(BottomBlock) && !(BottomMeta & 8)) + // The coords are pointing at the top part of the door + if (a_BlockX > 0) { - a_ChunkInterface.SetBlockMeta(a_X, a_Y - 1, a_Z, ChangeStateMetaData(BottomMeta)); + NIBBLETYPE DownMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ); + return (DownMeta & 0x07) | 0x08 | (Meta << 4); } + // This is the top part of the door at the bottommost layer of the world, there's no bottom: + return 0x08 | (Meta << 4); } else { - // Current block is bottom of the door - BLOCKTYPE TopBlock = a_ChunkInterface.GetBlock(a_X, a_Y + 1, a_Z); - NIBBLETYPE TopMeta = a_ChunkInterface.GetBlockMeta(a_X, a_Y + 1, a_Z); + // The coords are pointing at the bottom part of the door + if (a_BlockY < cChunkDef::Height - 1) + { + NIBBLETYPE UpMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY + 1, a_BlockZ); + return Meta | (UpMeta << 4); + } + // This is the bottom part of the door at the topmost layer of the world, there's no top: + return Meta; + } + } - if (IsDoor(TopBlock) && (TopMeta & 8)) + + /** Sets the door to the specified state. If the door is already in that state, does nothing. */ + static void SetOpen(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ, bool a_Open) + { + BLOCKTYPE Block = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ); + if (!IsDoor(Block)) + { + return; + } + + NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ); + bool IsOpened = ((Meta & 0x04) != 0); + if (IsOpened == a_Open) + { + return; + } + + // Change the door + NIBBLETYPE NewMeta = (Meta & 0x07) ^ 0x04; // Flip the "IsOpen" bit (0x04) + if ((Meta & 0x08) == 0) + { + // The block is the bottom part of the door + a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, NewMeta); + } + else + { + // The block is the top part of the door, set the meta to the corresponding top part + if (a_BlockY > 0) { - a_ChunkInterface.SetBlockMeta(a_X, a_Y + 1, a_Z, ChangeStateMetaData(TopMeta)); + a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ, NewMeta); } } } + + + /** Changes the door at the specified coords from open to close or vice versa */ + static void ChangeDoor(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ) + { + SetOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, !IsOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ)); + } } ; diff --git a/src/Blocks/BlockDropSpenser.h b/src/Blocks/BlockDropSpenser.h index 88b61a418..e2b3039fd 100644 --- a/src/Blocks/BlockDropSpenser.h +++ b/src/Blocks/BlockDropSpenser.h @@ -5,7 +5,7 @@ #pragma once -#include "../Piston.h" +#include "../Blocks/BlockPiston.h" #include "MetaRotator.h" @@ -32,7 +32,7 @@ public: a_BlockType = m_BlockType; // FIXME: Do not use cPiston class for dispenser placement! - a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch()); + a_BlockMeta = cBlockPistonHandler::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch()); return true; } diff --git a/src/Blocks/BlockFurnace.h b/src/Blocks/BlockFurnace.h index a7a807957..74582c3b3 100644 --- a/src/Blocks/BlockFurnace.h +++ b/src/Blocks/BlockFurnace.h @@ -3,7 +3,7 @@ #include "BlockEntity.h" #include "../World.h" -#include "../Piston.h" +#include "../Blocks/BlockPiston.h" #include "MetaRotator.h" @@ -35,7 +35,7 @@ public: a_BlockType = m_BlockType; // FIXME: Do not use cPiston class for furnace placement! - a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), 0); + a_BlockMeta = cBlockPistonHandler::RotationPitchToMetaData(a_Player->GetYaw(), 0); return true; } diff --git a/src/Blocks/BlockMobHead.h b/src/Blocks/BlockMobHead.h index acd1c88fb..9855574ad 100644 --- a/src/Blocks/BlockMobHead.h +++ b/src/Blocks/BlockMobHead.h @@ -46,8 +46,30 @@ public: bool IsWither(void) const { return m_IsWither; } void Reset(void) { m_IsWither = false; } + } CallbackA, CallbackB; + class cPlayerCallback : public cPlayerListCallback + { + Vector3f m_Pos; + + virtual bool Item(cPlayer * a_Player) + { + // TODO 2014-05-21 xdot: Vanilla minecraft uses an AABB check instead of a radius one + double Dist = (a_Player->GetPosition() - m_Pos).Length(); + if (Dist < 50.0) + { + // If player is close, award achievement + a_Player->AwardAchievement(achSpawnWither); + } + return false; + } + + public: + cPlayerCallback(const Vector3f & a_Pos) : m_Pos(a_Pos) {} + + } PlayerCallback(Vector3f((float)a_BlockX, (float)a_BlockY, (float)a_BlockZ)); + a_World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ, CallbackA); if (!CallbackA.IsWither()) @@ -86,6 +108,9 @@ public: // Spawn the wither: a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither); + // Award Achievement + a_World->ForEachPlayer(PlayerCallback); + return true; } @@ -113,6 +138,9 @@ public: // Spawn the wither: a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither); + // Award Achievement + a_World->ForEachPlayer(PlayerCallback); + return true; } diff --git a/src/Blocks/BlockPiston.cpp b/src/Blocks/BlockPiston.cpp index 542eb33b5..faf639312 100644 --- a/src/Blocks/BlockPiston.cpp +++ b/src/Blocks/BlockPiston.cpp @@ -4,14 +4,14 @@ #include "../Item.h" #include "../World.h" #include "../Entities/Player.h" -#include "../Piston.h" +#include "BlockInServerPluginInterface.h" #define AddPistonDir(x, y, z, dir, amount) \ - switch (dir) \ + switch (dir & 0x07) \ { \ case 0: (y) -= (amount); break; \ case 1: (y) += (amount); break; \ @@ -19,8 +19,16 @@ case 3: (z) += (amount); break; \ case 4: (x) -= (amount); break; \ case 5: (x) += (amount); break; \ + default: \ + { \ + LOGWARNING("%s: invalid direction %d, ignoring", __FUNCTION__, dir & 0x07); \ + break; \ + } \ } +#define PISTON_TICK_DELAY 1 +#define PISTON_MAX_PUSH_DISTANCE 12 + @@ -40,7 +48,7 @@ void cBlockPistonHandler::OnDestroyed(cChunkInterface & a_ChunkInterface, cWorld int newX = a_BlockX; int newY = a_BlockY; int newZ = a_BlockZ; - AddPistonDir(newX, newY, newZ, OldMeta & ~(8), 1); + AddPistonDir(newX, newY, newZ, OldMeta, 1); if (a_ChunkInterface.GetBlock(newX, newY, newZ) == E_BLOCK_PISTON_EXTENSION) { @@ -60,7 +68,7 @@ bool cBlockPistonHandler::GetPlacementBlockTypeMeta( ) { a_BlockType = m_BlockType; - a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch()); + a_BlockMeta = RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch()); return true; } @@ -68,6 +76,165 @@ bool cBlockPistonHandler::GetPlacementBlockTypeMeta( +int cBlockPistonHandler::FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE pistonmeta, cWorld * a_World) +{ + // Examine each of the 12 blocks ahead of the piston: + for (int ret = 0; ret < PISTON_MAX_PUSH_DISTANCE; ret++) + { + BLOCKTYPE currBlock; + NIBBLETYPE currMeta; + AddPistonDir(a_PistonX, a_PistonY, a_PistonZ, pistonmeta, 1); + a_World->GetBlockTypeMeta(a_PistonX, a_PistonY, a_PistonZ, currBlock, currMeta); + if (CanBreakPush(currBlock)) + { + // This block breaks when pushed, extend up to here + return ret; + } + if (!CanPush(currBlock, currMeta)) + { + // This block cannot be pushed at all, the piston can't extend + return -1; + } + } + // There is no space for the blocks to move, piston can't extend + return -1; +} + + + + + +void cBlockPistonHandler::ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World) +{ + BLOCKTYPE pistonBlock; + NIBBLETYPE pistonMeta; + a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta); + + if (IsExtended(pistonMeta)) + { + // Already extended, bail out + return; + } + + int dist = FirstPassthroughBlock(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, a_World); + if (dist < 0) + { + // FirstPassthroughBlock says piston can't push anything, bail out + return; + } + + a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 0, pistonMeta, pistonBlock); + a_World->BroadcastSoundEffect("tile.piston.out", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, 0.7f); + + // Drop the breakable block in the line, if appropriate: + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, dist + 1); // "a_Block" now at the breakable / empty block + BLOCKTYPE currBlock; + NIBBLETYPE currMeta; + a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, currBlock, currMeta); + if (currBlock != E_BLOCK_AIR) + { + cBlockHandler * Handler = BlockHandler(currBlock); + if (Handler->DoesDropOnUnsuitable()) + { + cChunkInterface ChunkInterface(a_World->GetChunkMap()); + cBlockInServerPluginInterface PluginInterface(*a_World); + Handler->DropBlock(ChunkInterface, *a_World, PluginInterface, NULL, a_BlockX, a_BlockY, a_BlockZ); + } + } + + // Push blocks, from the furthest to the nearest: + int oldx = a_BlockX, oldy = a_BlockY, oldz = a_BlockZ; + NIBBLETYPE currBlockMeta; + std::vector<Vector3i> ScheduledBlocks; + ScheduledBlocks.reserve(PISTON_MAX_PUSH_DISTANCE); + + for (int i = dist + 1; i > 1; i--) + { + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1); + a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, currBlock, currBlockMeta); + a_World->SetBlock(oldx, oldy, oldz, currBlock, currBlockMeta, false); + ScheduledBlocks.push_back(Vector3i(oldx, oldy, oldz)); + oldx = a_BlockX; + oldy = a_BlockY; + oldz = a_BlockZ; + } + + int extx = a_BlockX; + int exty = a_BlockY; + int extz = a_BlockZ; + ScheduledBlocks.push_back(Vector3i(extx, exty, extz)); + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1); + // "a_Block" now at piston body, "ext" at future extension + + a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta | 0x8); + a_World->SetBlock(extx, exty, extz, E_BLOCK_PISTON_EXTENSION, pistonMeta | (IsSticky(pistonBlock) ? 8 : 0), false); + a_World->ScheduleTask(PISTON_TICK_DELAY, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks)); +} + + + + + +void cBlockPistonHandler::RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World) +{ + BLOCKTYPE pistonBlock; + NIBBLETYPE pistonMeta; + a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta); + + if (!IsExtended(pistonMeta)) + { + // Already retracted, bail out + return; + } + + // Check the extension: + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1); + if (a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_PISTON_EXTENSION) + { + LOGD("%s: Piston without an extension - still extending, or just in an invalid state?", __FUNCTION__); + return; + } + + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1); + a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta & ~(8)); + a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 1, pistonMeta & ~(8), pistonBlock); + a_World->BroadcastSoundEffect("tile.piston.in", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, 0.7f); + AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1); + + // Retract the extension, pull block if appropriate + if (IsSticky(pistonBlock)) + { + int tempx = a_BlockX, tempy = a_BlockY, tempz = a_BlockZ; + AddPistonDir(tempx, tempy, tempz, pistonMeta, 1); + BLOCKTYPE tempBlock; + NIBBLETYPE tempMeta; + a_World->GetBlockTypeMeta(tempx, tempy, tempz, tempBlock, tempMeta); + if (CanPull(tempBlock, tempMeta)) + { + // Pull the block + a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, tempBlock, tempMeta, false); + a_World->SetBlock(tempx, tempy, tempz, E_BLOCK_AIR, 0, false); + + std::vector<Vector3i> ScheduledBlocks; + ScheduledBlocks.push_back(Vector3i(a_BlockX, a_BlockY, a_BlockZ)); + ScheduledBlocks.push_back(Vector3i(tempx, tempy, tempz)); + a_World->ScheduleTask(PISTON_TICK_DELAY + 1, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks)); + return; + } + } + + // Retract without pulling + a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0, false); + + std::vector<Vector3i> ScheduledBlocks; + ScheduledBlocks.push_back(Vector3i(a_BlockX, a_BlockY, a_BlockZ)); + a_World->ScheduleTask(PISTON_TICK_DELAY + 1, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks)); +} + + + + + /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // cBlockPistonHeadHandler: @@ -87,7 +254,7 @@ void cBlockPistonHeadHandler::OnDestroyedByPlayer(cChunkInterface & a_ChunkInter int newX = a_BlockX; int newY = a_BlockY; int newZ = a_BlockZ; - AddPistonDir(newX, newY, newZ, OldMeta & ~(8), -1); + AddPistonDir(newX, newY, newZ, OldMeta, -1); BLOCKTYPE Block = a_ChunkInterface.GetBlock(newX, newY, newZ); if ((Block == E_BLOCK_STICKY_PISTON) || (Block == E_BLOCK_PISTON)) diff --git a/src/Blocks/BlockPiston.h b/src/Blocks/BlockPiston.h index 7632b5e5a..e6fa48e54 100644 --- a/src/Blocks/BlockPiston.h +++ b/src/Blocks/BlockPiston.h @@ -21,6 +21,138 @@ public: int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta ) override; + + static NIBBLETYPE RotationPitchToMetaData(double a_Rotation, double a_Pitch) + { + if (a_Pitch >= 50) + { + return 0x1; + } + else if (a_Pitch <= -50) + { + return 0x0; + } + else + { + a_Rotation += 90 + 45; // So its not aligned with axis + + if (a_Rotation > 360) + { + a_Rotation -= 360; + } + if ((a_Rotation >= 0) && (a_Rotation < 90)) + { + return 0x4; + } + else if ((a_Rotation >= 180) && (a_Rotation < 270)) + { + return 0x5; + } + else if ((a_Rotation >= 90) && (a_Rotation < 180)) + { + return 0x2; + } + else + { + return 0x3; + } + } + } + + static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData) + { + switch (a_MetaData) + { + case 0x0: return BLOCK_FACE_YM; + case 0x1: return BLOCK_FACE_YP; + case 0x2: return BLOCK_FACE_ZM; + case 0x3: return BLOCK_FACE_ZP; + case 0x4: return BLOCK_FACE_XM; + case 0x5: return BLOCK_FACE_XP; + default: + { + ASSERT(!"Invalid Metadata"); + return BLOCK_FACE_NONE; + } + } + } + + static void ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World); + static void RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World); + +private: + + /// Returns true if the piston (specified by blocktype) is a sticky piston + static inline bool IsSticky(BLOCKTYPE a_BlockType) { return (a_BlockType == E_BLOCK_STICKY_PISTON); } + + /// Returns true if the piston (with the specified meta) is extended + static inline bool IsExtended(NIBBLETYPE a_PistonMeta) { return ((a_PistonMeta & 0x8) != 0x0); } + + /// Returns true if the specified block can be pushed by a piston (and left intact) + static inline bool CanPush(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) + { + switch (a_BlockType) + { + case E_BLOCK_ANVIL: + case E_BLOCK_BED: + case E_BLOCK_BEDROCK: + case E_BLOCK_BREWING_STAND: + case E_BLOCK_CHEST: + case E_BLOCK_COMMAND_BLOCK: + case E_BLOCK_DISPENSER: + case E_BLOCK_DROPPER: + case E_BLOCK_ENCHANTMENT_TABLE: + case E_BLOCK_END_PORTAL: + case E_BLOCK_END_PORTAL_FRAME: + case E_BLOCK_FURNACE: + case E_BLOCK_LIT_FURNACE: + case E_BLOCK_HOPPER: + case E_BLOCK_JUKEBOX: + case E_BLOCK_MOB_SPAWNER: + case E_BLOCK_NETHER_PORTAL: + case E_BLOCK_NOTE_BLOCK: + case E_BLOCK_OBSIDIAN: + case E_BLOCK_PISTON_EXTENSION: + { + return false; + } + case E_BLOCK_STICKY_PISTON: + case E_BLOCK_PISTON: + { + // A piston can only be pushed if retracted: + return !IsExtended(a_BlockMeta); + } + } + return true; + } + + /// Returns true if the specified block can be pushed by a piston and broken / replaced + static inline bool CanBreakPush(BLOCKTYPE a_BlockType) { return cBlockInfo::IsPistonBreakable(a_BlockType); } + + /// Returns true if the specified block can be pulled by a sticky piston + static inline bool CanPull(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) + { + switch (a_BlockType) + { + case E_BLOCK_LAVA: + case E_BLOCK_STATIONARY_LAVA: + case E_BLOCK_STATIONARY_WATER: + case E_BLOCK_WATER: + { + return false; + } + } + + if (CanBreakPush(a_BlockType)) + { + return false; // CanBreakPush returns true, but we need false to prevent pulling + } + + return CanPush(a_BlockType, a_BlockMeta); + } + + /// Returns how many blocks the piston has to push (where the first free space is); < 0 when unpushable + static int FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE a_PistonMeta, cWorld * a_World); } ; @@ -40,7 +172,7 @@ public: virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override { // No pickups - // Also with 1.7, the item forms of these tecnical blocks have been removed, so giving someone this will crash their client... + // Also with 1.7, the item forms of these technical blocks have been removed, so giving someone this will crash their client... } } ; 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