Initial commit

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;
+
+}