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-rw-r--r--Minecraft.World/PistonBaseTile.cpp628
1 files changed, 628 insertions, 0 deletions
diff --git a/Minecraft.World/PistonBaseTile.cpp b/Minecraft.World/PistonBaseTile.cpp
new file mode 100644
index 00000000..cbad5cec
--- /dev/null
+++ b/Minecraft.World/PistonBaseTile.cpp
@@ -0,0 +1,628 @@
+#include "stdafx.h"
+#include "PistonBaseTile.h"
+#include "PistonMovingPiece.h"
+#include "PistonPieceEntity.h"
+#include "PistonExtensionTile.h"
+#include "Facing.h"
+#include "net.minecraft.world.level.h"
+#include "..\Minecraft.Client\Minecraft.h"
+#include "..\Minecraft.Client\MultiPlayerLevel.h"
+#include "net.minecraft.world.h"
+#include "LevelChunk.h"
+#include "Dimension.h"
+
+const wstring PistonBaseTile::EDGE_TEX = L"piston_side";
+const wstring PistonBaseTile::PLATFORM_TEX = L"piston_top";
+const wstring PistonBaseTile::PLATFORM_STICKY_TEX = L"piston_top_sticky";
+const wstring PistonBaseTile::BACK_TEX = L"piston_bottom";
+const wstring PistonBaseTile::INSIDE_TEX = L"piston_inner_top";
+
+const float PistonBaseTile::PLATFORM_THICKNESS = 4.0f;
+
+DWORD PistonBaseTile::tlsIdx = TlsAlloc();
+
+// 4J - NOTE - this ignoreUpdate stuff has been removed from the java version, but I'm not currently sure how the java version does without it... there must be
+// some other mechanism that we don't have that stops the event from one piston being processed, from causing neighbours to have extra events created for them.
+// For us, that means that if we create a piston next to another one, then one of them gets two events to createPush, the second of which fails, leaving the
+// piston in a bad (simultaneously extended & not extended) state.
+// 4J - ignoreUpdate is a static in java, implementing as TLS here to make thread safe
+bool PistonBaseTile::ignoreUpdate()
+{
+ return (TlsGetValue(tlsIdx) != NULL);
+}
+
+void PistonBaseTile::ignoreUpdate(bool set)
+{
+ TlsSetValue(tlsIdx,(LPVOID)(set?1:0));
+}
+
+PistonBaseTile::PistonBaseTile(int id, bool isSticky) : Tile(id, Material::piston, isSolidRender() )
+{
+ // 4J - added initialiser
+ ignoreUpdate(false);
+
+ this->isSticky = isSticky;
+ setSoundType(SOUND_STONE);
+ setDestroyTime(0.5f);
+
+ iconInside = NULL;
+ iconBack = NULL;
+ iconPlatform = NULL;
+}
+
+Icon *PistonBaseTile::getPlatformTexture()
+{
+ return iconPlatform;
+}
+
+void PistonBaseTile::updateShape(float x0, float y0, float z0, float x1, float y1, float z1)
+{
+ setShape(x0, y0, z0, x1, y1, z1);
+}
+
+Icon *PistonBaseTile::getTexture(int face, int data)
+{
+ int facing = getFacing(data);
+
+ if (facing > 5)
+ {
+ return iconPlatform;
+ }
+
+ if (face == facing)
+ {
+ // sorry about this mess...
+ // when the piston is extended, either normally
+ // or because a piston arm animation, the top
+ // texture is the furnace bottom
+ ThreadStorage *tls = (ThreadStorage *)TlsGetValue(Tile::tlsIdxShape);
+ if (isExtended(data) || tls->xx0 > 0 || tls->yy0 > 0 || tls->zz0 > 0 || tls->xx1 < 1 || tls->yy1 < 1 || tls->zz1 < 1)
+ {
+ return iconInside;
+ }
+ return iconPlatform;
+ }
+ if (face == Facing::OPPOSITE_FACING[facing])
+ {
+ return iconBack;
+ }
+
+ return icon;
+}
+
+Icon *PistonBaseTile::getTexture(const wstring &name)
+{
+ if (name.compare(EDGE_TEX) == 0) return Tile::pistonBase->icon;
+ if (name.compare(PLATFORM_TEX) == 0) return Tile::pistonBase->iconPlatform;
+ if (name.compare(PLATFORM_STICKY_TEX) == 0) return Tile::pistonStickyBase->iconPlatform;
+ if (name.compare(INSIDE_TEX) == 0) return Tile::pistonBase->iconInside;
+
+ return NULL;
+}
+
+//@Override
+void PistonBaseTile::registerIcons(IconRegister *iconRegister)
+{
+ icon = iconRegister->registerIcon(EDGE_TEX);
+ iconPlatform = iconRegister->registerIcon(isSticky ? PLATFORM_STICKY_TEX : PLATFORM_TEX);
+ iconInside = iconRegister->registerIcon(INSIDE_TEX);
+ iconBack = iconRegister->registerIcon(BACK_TEX);
+}
+
+int PistonBaseTile::getRenderShape()
+{
+ return SHAPE_PISTON_BASE;
+}
+
+bool PistonBaseTile::isSolidRender(bool isServerLevel)
+{
+ return false;
+}
+
+bool PistonBaseTile::use(Level *level, int x, int y, int z, shared_ptr<Player> player, int clickedFace, float clickX, float clickY, float clickZ, bool soundOnly/*=false*/) // 4J added soundOnly param
+{
+ return false;
+}
+
+void PistonBaseTile::setPlacedBy(Level *level, int x, int y, int z, shared_ptr<Mob> by)
+{
+ int targetData = getNewFacing(level, x, y, z, dynamic_pointer_cast<Player>(by) );
+ level->setData(x, y, z, targetData);
+ if (!level->isClientSide && !ignoreUpdate())
+ {
+ checkIfExtend(level, x, y, z);
+ }
+}
+
+void PistonBaseTile::neighborChanged(Level *level, int x, int y, int z, int type)
+{
+ if (!level->isClientSide && !ignoreUpdate())
+ {
+ checkIfExtend(level, x, y, z);
+ }
+}
+
+void PistonBaseTile::onPlace(Level *level, int x, int y, int z)
+{
+ if (!level->isClientSide && level->getTileEntity(x, y, z) == NULL && !ignoreUpdate())
+ {
+ checkIfExtend(level, x, y, z);
+ }
+}
+
+void PistonBaseTile::checkIfExtend(Level *level, int x, int y, int z)
+{
+ int data = level->getData(x, y, z);
+ int facing = getFacing(data);
+
+ if (facing == UNDEFINED_FACING)
+ {
+ return;
+ }
+ bool extend = getNeighborSignal(level, x, y, z, facing);
+
+ if (extend && !isExtended(data))
+ {
+ if (canPush(level, x, y, z, facing))
+ {
+ //level->setDataNoUpdate(x, y, z, facing | EXTENDED_BIT);
+ level->tileEvent(x, y, z, id, TRIGGER_EXTEND, facing);
+ }
+ }
+ else if (!extend && isExtended(data))
+ {
+ //level->setDataNoUpdate(x, y, z, facing);
+ level->tileEvent(x, y, z, id, TRIGGER_CONTRACT, facing);
+ }
+}
+
+/**
+ * This method checks neighbor signals for this block and the block above,
+ * and directly beneath. However, it avoids checking blocks that would be
+ * pushed by this block.
+ *
+ * @param level
+ * @param x
+ * @param y
+ * @param z
+ * @return
+ */
+bool PistonBaseTile::getNeighborSignal(Level *level, int x, int y, int z, int facing)
+{
+ // check adjacent neighbors, but not in push direction
+ if (facing != Facing::DOWN && level->getSignal(x, y - 1, z, Facing::DOWN)) return true;
+ if (facing != Facing::UP && level->getSignal(x, y + 1, z, Facing::UP)) return true;
+ if (facing != Facing::NORTH && level->getSignal(x, y, z - 1, Facing::NORTH)) return true;
+ if (facing != Facing::SOUTH && level->getSignal(x, y, z + 1, Facing::SOUTH)) return true;
+ if (facing != Facing::EAST && level->getSignal(x + 1, y, z, Facing::EAST)) return true;
+ if (facing != Facing::WEST && level->getSignal(x - 1, y, z, Facing::WEST)) return true;
+
+ // check signals above
+ if (level->getSignal(x, y, z, 0)) return true;
+ if (level->getSignal(x, y + 2, z, 1)) return true;
+ if (level->getSignal(x, y + 1, z - 1, 2)) return true;
+ if (level->getSignal(x, y + 1, z + 1, 3)) return true;
+ if (level->getSignal(x - 1, y + 1, z, 4)) return true;
+ if (level->getSignal(x + 1, y + 1, z, 5)) return true;
+
+ return false;
+}
+
+void PistonBaseTile::triggerEvent(Level *level, int x, int y, int z, int param1, int facing)
+{
+ ignoreUpdate(true);
+
+ if (param1 == TRIGGER_EXTEND)
+ {
+ level->setDataNoUpdate(x, y, z, facing | EXTENDED_BIT);
+ }
+ else
+ {
+ level->setDataNoUpdate(x, y, z, facing);
+ }
+
+ if (param1 == TRIGGER_EXTEND)
+ {
+ PIXBeginNamedEvent(0,"Create push\n");
+ if (createPush(level, x, y, z, facing))
+ {
+ // 4J - it is (currently) critical that this setData sends data to the client, so have added a bool to the method so that it sends data even if the data was already set to the same value
+ // as before, which was actually its behaviour until a change in 1.0.1 meant that setData only conditionally sent updates to listeners. If the data update Isn't sent, then what
+ // can happen is:
+ // (1) the host sends the tile event to the client
+ // (2) the client gets the tile event, and sets the tile/data value locally.
+ // (3) just before setting the tile/data locally, the client will put the old value in the vector of things to be restored should an update not be received back from the host
+ // (4) we don't get any update of the tile from the host, and so the old value gets restored on the client
+ // (5) the piston base ends up being restored to its retracted state whilst the piston arm is extended
+ // We really need to spend some time investigating a better way for pistons to work as it all seems a bit scary how the host/client interact, but forcing this to send should at least
+ // restore the behaviour of the pistons to something closer to what they were before the 1.0.1 update. By sending this data update, then (4) in the list above doesn't happen
+ // because the client does actually receive an update for this tile from the host after the event has been processed on the cient.
+ level->setData(x, y, z, facing | EXTENDED_BIT, true);
+ level->playSound(x + 0.5, y + 0.5, z + 0.5, eSoundType_TILE_PISTON_OUT, 0.5f, level->random->nextFloat() * 0.25f + 0.6f);
+ }
+ else
+ {
+ level->setDataNoUpdate(x, y, z, facing);
+ }
+ PIXEndNamedEvent();
+ }
+ else if (param1 == TRIGGER_CONTRACT)
+ {
+ PIXBeginNamedEvent(0,"Contract phase A\n");
+ shared_ptr<TileEntity> prevTileEntity = level->getTileEntity(x + Facing::STEP_X[facing], y + Facing::STEP_Y[facing], z + Facing::STEP_Z[facing]);
+ if (prevTileEntity != NULL && dynamic_pointer_cast<PistonPieceEntity>(prevTileEntity) != NULL)
+ {
+ dynamic_pointer_cast<PistonPieceEntity>(prevTileEntity)->finalTick();
+ }
+
+ stopSharingIfServer(level, x, y, z); // 4J added
+ level->setTileAndDataNoUpdate(x, y, z, Tile::pistonMovingPiece_Id, facing);
+ level->setTileEntity(x, y, z, PistonMovingPiece::newMovingPieceEntity(id, facing, facing, false, true));
+
+ PIXEndNamedEvent();
+
+ // sticky movement
+ if (isSticky)
+ {
+ PIXBeginNamedEvent(0,"Contract sticky phase A\n");
+ int twoX = x + Facing::STEP_X[facing] * 2;
+ int twoY = y + Facing::STEP_Y[facing] * 2;
+ int twoZ = z + Facing::STEP_Z[facing] * 2;
+ int block = level->getTile(twoX, twoY, twoZ);
+ int blockData = level->getData(twoX, twoY, twoZ);
+ bool pistonPiece = false;
+
+ PIXEndNamedEvent();
+
+ if (block == Tile::pistonMovingPiece_Id)
+ {
+ PIXBeginNamedEvent(0,"Contract sticky phase B\n");
+ // the block two steps away is a moving piston block piece,
+ // so replace it with the real data, since it's probably
+ // this piston which is changing too fast
+ shared_ptr<TileEntity> tileEntity = level->getTileEntity(twoX, twoY, twoZ);
+ if (tileEntity != NULL && dynamic_pointer_cast<PistonPieceEntity>(tileEntity) != NULL )
+ {
+ shared_ptr<PistonPieceEntity> ppe = dynamic_pointer_cast<PistonPieceEntity>(tileEntity);
+
+ if (ppe->getFacing() == facing && ppe->isExtending())
+ {
+ // force the tile to air before pushing
+ ppe->finalTick();
+ block = ppe->getId();
+ blockData = ppe->getData();
+ pistonPiece = true;
+ }
+ }
+ PIXEndNamedEvent();
+ }
+
+ PIXBeginNamedEvent(0,"Contract sticky phase C\n");
+ if (!pistonPiece && block > 0 && (isPushable(block, level, twoX, twoY, twoZ, false))
+ && (Tile::tiles[block]->getPistonPushReaction() == Material::PUSH_NORMAL || block == Tile::pistonBase_Id || block == Tile::pistonStickyBase_Id))
+ {
+ stopSharingIfServer(level, twoX, twoY, twoZ); // 4J added
+
+ x += Facing::STEP_X[facing];
+ y += Facing::STEP_Y[facing];
+ z += Facing::STEP_Z[facing];
+
+ level->setTileAndDataNoUpdate(x, y, z, Tile::pistonMovingPiece_Id, blockData);
+ level->setTileEntity(x, y, z, PistonMovingPiece::newMovingPieceEntity(block, blockData, facing, false, false));
+
+ ignoreUpdate(false);
+ level->setTile(twoX, twoY, twoZ, 0);
+ ignoreUpdate(true);
+ }
+ else if (!pistonPiece)
+ {
+ stopSharingIfServer(level, x + Facing::STEP_X[facing], y + Facing::STEP_Y[facing], z + Facing::STEP_Z[facing]); // 4J added
+ ignoreUpdate(false);
+ level->setTile(x + Facing::STEP_X[facing], y + Facing::STEP_Y[facing], z + Facing::STEP_Z[facing], 0);
+ ignoreUpdate(true);
+ }
+ PIXEndNamedEvent();
+ }
+ else
+ {
+ stopSharingIfServer(level, x + Facing::STEP_X[facing], y + Facing::STEP_Y[facing], z + Facing::STEP_Z[facing]); // 4J added
+ ignoreUpdate(false);
+ level->setTile(x + Facing::STEP_X[facing], y + Facing::STEP_Y[facing], z + Facing::STEP_Z[facing], 0);
+ ignoreUpdate(true);
+ }
+
+ level->playSound(x + 0.5, y + 0.5, z + 0.5, eSoundType_TILE_PISTON_IN, 0.5f, level->random->nextFloat() * 0.15f + 0.6f);
+ }
+
+ ignoreUpdate(false);
+}
+
+void PistonBaseTile::updateShape(LevelSource *level, int x, int y, int z, int forceData, shared_ptr<TileEntity> forceEntity) // 4J added forceData, forceEntity param
+{
+ int data = (forceData == -1 ) ? level->getData(x, y, z) : forceData;
+
+ if (isExtended(data))
+ {
+ const float thickness = PLATFORM_THICKNESS / 16.0f;
+ switch (getFacing(data))
+ {
+ case Facing::DOWN:
+ setShape(0, thickness, 0, 1, 1, 1);
+ break;
+ case Facing::UP:
+ setShape(0, 0, 0, 1, 1 - thickness, 1);
+ break;
+ case Facing::NORTH:
+ setShape(0, 0, thickness, 1, 1, 1);
+ break;
+ case Facing::SOUTH:
+ setShape(0, 0, 0, 1, 1, 1 - thickness);
+ break;
+ case Facing::WEST:
+ setShape(thickness, 0, 0, 1, 1, 1);
+ break;
+ case Facing::EAST:
+ setShape(0, 0, 0, 1 - thickness, 1, 1);
+ break;
+ }
+ }
+ else
+ {
+ setShape(0, 0, 0, 1, 1, 1);
+ }
+}
+
+void PistonBaseTile::updateDefaultShape()
+{
+ setShape(0, 0, 0, 1, 1, 1);
+}
+
+void PistonBaseTile::addAABBs(Level *level, int x, int y, int z, AABB *box, AABBList *boxes, shared_ptr<Entity> source)
+{
+ setShape(0, 0, 0, 1, 1, 1);
+ Tile::addAABBs(level, x, y, z, box, boxes, source);
+}
+
+AABB *PistonBaseTile::getAABB(Level *level, int x, int y, int z)
+{
+ updateShape(level, x, y, z);
+ return Tile::getAABB(level, x, y, z);
+}
+
+bool PistonBaseTile::isCubeShaped()
+{
+ return false;
+}
+
+int PistonBaseTile::getFacing(int data)
+{
+ return data & 0x7;
+}
+
+bool PistonBaseTile::isExtended(int data)
+{
+ return (data & EXTENDED_BIT) != 0;
+}
+
+int PistonBaseTile::getNewFacing(Level *level, int x, int y, int z, shared_ptr<Player> player)
+{
+ if (Mth::abs((float) player->x - x) < 2 && Mth::abs((float) player->z - z) < 2)
+ {
+ // If the player is above the block, the slot is on the top
+ double py = player->y + 1.82 - player->heightOffset;
+ if (py - y > 2)
+ {
+ return Facing::UP;
+ }
+ // If the player is below the block, the slot is on the bottom
+ if (y - py > 0)
+ {
+ return Facing::DOWN;
+ }
+ }
+ // The slot is on the side
+ int i = Mth::floor(player->yRot * 4.0f / 360.0f + 0.5) & 0x3;
+ if (i == 0) return Facing::NORTH;
+ if (i == 1) return Facing::EAST;
+ if (i == 2) return Facing::SOUTH;
+ if (i == 3) return Facing::WEST;
+ return 0;
+}
+
+bool PistonBaseTile::isPushable(int block, Level *level, int cx, int cy, int cz, bool allowDestroyable)
+{
+ // special case for obsidian
+ if (block == Tile::obsidian_Id)
+ {
+ return false;
+ }
+
+ if (block == Tile::pistonBase_Id || block == Tile::pistonStickyBase_Id)
+ {
+ // special case for piston bases
+ if (isExtended(level->getData(cx, cy, cz)))
+ {
+ return false;
+ }
+ }
+ else
+ {
+ if (Tile::tiles[block]->getDestroySpeed(level, cx, cy, cz) == Tile::INDESTRUCTIBLE_DESTROY_TIME)
+ {
+ return false;
+ }
+
+ if (Tile::tiles[block]->getPistonPushReaction() == Material::PUSH_BLOCK)
+ {
+ return false;
+ }
+
+ if (!allowDestroyable && Tile::tiles[block]->getPistonPushReaction() == Material::PUSH_DESTROY)
+ {
+ return false;
+ }
+ }
+
+ if( Tile::tiles[block]->isEntityTile() ) // 4J - java uses instanceof EntityTile here
+ {
+ // may not push tile entities
+ return false;
+ }
+
+ return true;
+}
+
+bool PistonBaseTile::canPush(Level *level, int sx, int sy, int sz, int facing)
+{
+ int cx = sx + Facing::STEP_X[facing];
+ int cy = sy + Facing::STEP_Y[facing];
+ int cz = sz + Facing::STEP_Z[facing];
+
+ for (int i = 0; i < MAX_PUSH_DEPTH + 1; i++)
+ {
+
+ if (cy <= 0 || cy >= (Level::maxBuildHeight - 1))
+ {
+ // out of bounds
+ return false;
+ }
+
+ // 4J - added to also check for out of bounds in x/z for our finite world
+ int minXZ = - (level->dimension->getXZSize() * 16 ) / 2;
+ int maxXZ = (level->dimension->getXZSize() * 16 ) / 2 - 1;
+ if( ( cx <= minXZ ) || ( cx >= maxXZ ) || ( cz <= minXZ ) || ( cz >= maxXZ ) )
+ {
+ return false;
+ }
+ int block = level->getTile(cx, cy, cz);
+ if (block == 0)
+ {
+ break;
+ }
+
+ if (!isPushable(block, level, cx, cy, cz, true))
+ {
+ return false;
+ }
+
+ if (Tile::tiles[block]->getPistonPushReaction() == Material::PUSH_DESTROY)
+ {
+ break;
+ }
+
+ if (i == MAX_PUSH_DEPTH)
+ {
+ // we've reached the maximum push depth
+ // without finding air or a breakable block
+ return false;
+ }
+
+ cx += Facing::STEP_X[facing];
+ cy += Facing::STEP_Y[facing];
+ cz += Facing::STEP_Z[facing];
+ }
+
+ return true;
+
+}
+
+void PistonBaseTile::stopSharingIfServer(Level *level, int x, int y, int z)
+{
+ if( !level->isClientSide )
+ {
+ MultiPlayerLevel *clientLevel = Minecraft::GetInstance()->getLevel(level->dimension->id);
+ if( clientLevel )
+ {
+ LevelChunk *lc = clientLevel->getChunkAt( x, z );
+ lc->stopSharingTilesAndData();
+ }
+ }
+}
+
+bool PistonBaseTile::createPush(Level *level, int sx, int sy, int sz, int facing)
+{
+ int cx = sx + Facing::STEP_X[facing];
+ int cy = sy + Facing::STEP_Y[facing];
+ int cz = sz + Facing::STEP_Z[facing];
+
+ for (int i = 0; i < MAX_PUSH_DEPTH + 1; i++)
+ {
+ if (cy <= 0 || cy >= (Level::maxBuildHeight - 1))
+ {
+ // out of bounds
+ return false;
+ }
+
+ // 4J - added to also check for out of bounds in x/z for our finite world
+ int minXZ = - (level->dimension->getXZSize() * 16 ) / 2;
+ int maxXZ = (level->dimension->getXZSize() * 16 ) / 2 - 1;
+ if( ( cx <= minXZ ) || ( cx >= maxXZ ) || ( cz <= minXZ ) || ( cz >= maxXZ ) )
+ {
+ return false;
+ }
+
+ int block = level->getTile(cx, cy, cz);
+ if (block == 0)
+ {
+ break;
+ }
+
+ if (!isPushable(block, level, cx, cy, cz, true))
+ {
+ return false;
+ }
+
+ if (Tile::tiles[block]->getPistonPushReaction() == Material::PUSH_DESTROY)
+ {
+ // this block is destroyed when pushed
+ Tile::tiles[block]->spawnResources(level, cx, cy, cz, level->getData(cx, cy, cz), 0);
+ // setting the tile to air is actually superflous, but
+ // helps vs multiplayer problems
+ stopSharingIfServer(level, cx, cy, cz); // 4J added
+ level->setTile(cx, cy, cz, 0);
+ break;
+ }
+
+ if (i == MAX_PUSH_DEPTH)
+ {
+ // we've reached the maximum push depth
+ // without finding air or a breakable block
+ return false;
+ }
+
+ cx += Facing::STEP_X[facing];
+ cy += Facing::STEP_Y[facing];
+ cz += Facing::STEP_Z[facing];
+ }
+
+ while (cx != sx || cy != sy || cz != sz)
+ {
+
+ int nx = cx - Facing::STEP_X[facing];
+ int ny = cy - Facing::STEP_Y[facing];
+ int nz = cz - Facing::STEP_Z[facing];
+
+ int block = level->getTile(nx, ny, nz);
+ int data = level->getData(nx, ny, nz);
+
+ stopSharingIfServer(level, cx, cy, cz); // 4J added
+
+ if (block == id && nx == sx && ny == sy && nz == sz)
+ {
+ level->setTileAndDataNoUpdate(cx, cy, cz, Tile::pistonMovingPiece_Id, facing | (isSticky ? PistonExtensionTile::STICKY_BIT : 0), false);
+ level->setTileEntity(cx, cy, cz, PistonMovingPiece::newMovingPieceEntity(Tile::pistonExtensionPiece_Id, facing | (isSticky ? PistonExtensionTile::STICKY_BIT : 0), facing, true, false));
+ }
+ else
+ {
+ level->setTileAndDataNoUpdate(cx, cy, cz, Tile::pistonMovingPiece_Id, data, false);
+ level->setTileEntity(cx, cy, cz, PistonMovingPiece::newMovingPieceEntity(block, data, facing, true, false));
+ }
+
+ cx = nx;
+ cy = ny;
+ cz = nz;
+ }
+
+ return true;
+
+}
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