Initial commit

1 files changed, 676 insertions, 0 deletions

diff --git a/Minecraft.World/RailTile.cpp b/Minecraft.World/RailTile.cpp
new file mode 100644
index 00000000..4ece48ca
--- /dev/null
+++ b/Minecraft.World/RailTile.cpp
@@ -0,0 +1,676 @@
+#include "stdafx.h"
+#include "net.minecraft.world.phys.h"
+#include "net.minecraft.world.level.h"
+#include "net.minecraft.world.h"
+#include "RailTile.h"
+
+RailTile::Rail::Rail(Level *level, int x, int y, int z)
+{
+	this->level = level;
+	this->x = x;
+	this->y = y;
+	this->z = z;
+
+	int id = level->getTile(x, y, z);
+
+	// 4J Stu - We saw a random crash near the end of development on XboxOne orignal version where the id here isn't a tile any more
+	// Adding this check in to avoid that crash
+	m_bValidRail = isRail(id);
+	if(m_bValidRail)
+	{
+		int direction = level->getData(x, y, z);
+		if (((RailTile *) Tile::tiles[id])->usesDataBit)
+		{
+			usesDataBit = true;
+			direction = direction & ~RAIL_DATA_BIT;
+		}
+		else
+		{
+			usesDataBit = false;
+		}
+		updateConnections(direction);
+	}
+}
+
+RailTile::Rail::~Rail()
+{
+	for( int i = 0; i < connections.size(); i++ )
+	{
+		delete connections[i];
+	}
+}
+
+void RailTile::Rail::updateConnections(int direction)
+{
+	if(m_bValidRail)
+	{
+		for( int i = 0; i < connections.size(); i++ )
+		{
+			delete connections[i];
+		}
+		connections.clear();
+		MemSect(50);
+		if (direction == DIR_FLAT_Z)
+		{
+			connections.push_back(new TilePos(x, y, z - 1));
+			connections.push_back(new TilePos(x, y, z + 1));
+		} else if (direction == DIR_FLAT_X)
+		{
+			connections.push_back(new TilePos(x - 1, y, z));
+			connections.push_back(new TilePos(x + 1, y, z));
+		} else if (direction == 2)
+		{
+			connections.push_back(new TilePos(x - 1, y, z));
+			connections.push_back(new TilePos(x + 1, y + 1, z));
+		} else if (direction == 3)
+		{
+			connections.push_back(new TilePos(x - 1, y + 1, z));
+			connections.push_back(new TilePos(x + 1, y, z));
+		} else if (direction == 4)
+		{
+			connections.push_back(new TilePos(x, y + 1, z - 1));
+			connections.push_back(new TilePos(x, y, z + 1));
+		} else if (direction == 5)
+		{
+			connections.push_back(new TilePos(x, y, z - 1));
+			connections.push_back(new TilePos(x, y + 1, z + 1));
+		} else if (direction == 6)
+		{
+			connections.push_back(new TilePos(x + 1, y, z));
+			connections.push_back(new TilePos(x, y, z + 1));
+		} else if (direction == 7)
+		{
+			connections.push_back(new TilePos(x - 1, y, z));
+			connections.push_back(new TilePos(x, y, z + 1));
+		} else if (direction == 8)
+		{
+			connections.push_back(new TilePos(x - 1, y, z));
+			connections.push_back(new TilePos(x, y, z - 1));
+		} else if (direction == 9)
+		{
+			connections.push_back(new TilePos(x + 1, y, z));
+			connections.push_back(new TilePos(x, y, z - 1));
+		}
+		MemSect(0);
+	}
+}
+
+void RailTile::Rail::removeSoftConnections()
+{
+	if(m_bValidRail)
+	{
+		for (unsigned int i = 0; i < connections.size(); i++)
+		{
+			Rail *rail = getRail(connections[i]);
+			if (rail == NULL || !rail->connectsTo(this))
+			{
+				delete connections[i];
+				connections.erase(connections.begin()+i);
+				i--;
+			} else
+			{
+				delete connections[i];
+				MemSect(50);
+				connections[i] =new TilePos(rail->x, rail->y, rail->z);
+				MemSect(0);
+			}
+			delete rail;
+		}
+	}
+}
+
+bool RailTile::Rail::hasRail(int x, int y, int z)
+{
+	if(!m_bValidRail) return false;
+	if (isRail(level, x, y, z)) return true;
+	if (isRail(level, x, y + 1, z)) return true;
+	if (isRail(level, x, y - 1, z)) return true;
+	return false;
+}
+
+RailTile::Rail *RailTile::Rail::getRail(TilePos *p)
+{
+	if(!m_bValidRail) return NULL;
+	if (isRail(level, p->x, p->y, p->z)) return new Rail(level, p->x, p->y, p->z);
+	if (isRail(level, p->x, p->y + 1, p->z)) return new Rail(level, p->x, p->y + 1, p->z);
+	if (isRail(level, p->x, p->y - 1, p->z)) return new Rail(level, p->x, p->y - 1, p->z);
+	return NULL;
+}
+
+
+bool RailTile::Rail::connectsTo(Rail *rail)
+{
+	if(m_bValidRail)
+	{
+		AUTO_VAR(itEnd, connections.end());
+		for (AUTO_VAR(it, connections.begin()); it != itEnd; it++)
+		{
+			TilePos *p = *it; //connections[i];
+			if (p->x == rail->x && p->z == rail->z)
+			{
+				return true;
+			}
+		}
+	}
+	return false;
+}
+
+bool RailTile::Rail::hasConnection(int x, int y, int z)
+{
+	if(m_bValidRail)
+	{
+		AUTO_VAR(itEnd, connections.end());
+		for (AUTO_VAR(it, connections.begin()); it != itEnd; it++)
+		{
+			TilePos *p = *it; //connections[i];
+			if (p->x == x && p->z == z)
+			{
+				return true;
+			}
+		}
+	}
+	return false;
+}
+
+
+int RailTile::Rail::countPotentialConnections()
+{
+	int count = 0;
+
+	if(m_bValidRail)
+	{
+		if (hasRail(x, y, z - 1)) count++;
+		if (hasRail(x, y, z + 1)) count++;
+		if (hasRail(x - 1, y, z)) count++;
+		if (hasRail(x + 1, y, z)) count++;
+	}
+
+	return count;
+}
+
+bool RailTile::Rail::canConnectTo(Rail *rail)
+{
+	if(!m_bValidRail) return false;
+	if (connectsTo(rail)) return true;
+	if (connections.size() == 2)
+	{
+		return false;
+	}
+	if (connections.empty())
+	{
+		return true;
+	}
+
+	TilePos *c = connections[0];
+
+	return true;
+}
+
+void RailTile::Rail::connectTo(Rail *rail)
+{
+	if(m_bValidRail)
+	{
+		MemSect(50);
+		connections.push_back(new TilePos(rail->x, rail->y, rail->z));
+		MemSect(0);
+
+		bool n = hasConnection(x, y, z - 1);
+		bool s = hasConnection(x, y, z + 1);
+		bool w = hasConnection(x - 1, y, z);
+		bool e = hasConnection(x + 1, y, z);
+
+		int dir = -1;
+
+		if (n || s) dir = DIR_FLAT_Z;
+		if (w || e) dir = DIR_FLAT_X;
+
+		if (!usesDataBit)
+		{
+			if (s && e && !n && !w) dir = 6;
+			if (s && w && !n && !e) dir = 7;
+			if (n && w && !s && !e) dir = 8;
+			if (n && e && !s && !w) dir = 9;
+		}
+		if (dir == DIR_FLAT_Z)
+		{
+			if (isRail(level, x, y + 1, z - 1)) dir = 4;
+			if (isRail(level, x, y + 1, z + 1)) dir = 5;
+		}
+		if (dir == DIR_FLAT_X)
+		{
+			if (isRail(level, x + 1, y + 1, z)) dir = 2;
+			if (isRail(level, x - 1, y + 1, z)) dir = 3;
+		}
+
+		if (dir < 0) dir = DIR_FLAT_Z;
+
+		int data = dir;
+		if (usesDataBit)
+		{
+			data = (level->getData(x, y, z) & RAIL_DATA_BIT) | dir;
+		}
+
+		level->setData(x, y, z, data);
+	}
+}
+
+bool RailTile::Rail::hasNeighborRail(int x, int y, int z)
+{
+	if(!m_bValidRail) return false;
+	TilePos tp(x,y,z);
+	Rail *neighbor = getRail( &tp );
+	if (neighbor == NULL) return false;
+	neighbor->removeSoftConnections();
+	bool retval = neighbor->canConnectTo(this);
+	delete neighbor;
+	return retval;
+}
+
+void RailTile::Rail::place(bool hasSignal, bool first)
+{
+	if(m_bValidRail)
+	{
+		bool n = hasNeighborRail(x, y, z - 1);
+		bool s = hasNeighborRail(x, y, z + 1);
+		bool w = hasNeighborRail(x - 1, y, z);
+		bool e = hasNeighborRail(x + 1, y, z);
+
+		int dir = -1;
+
+		if ((n || s) && !w && !e) dir = DIR_FLAT_Z;
+		if ((w || e) && !n && !s) dir = DIR_FLAT_X;
+
+		if (!usesDataBit)
+		{
+			if (s && e && !n && !w) dir = 6;
+			if (s && w && !n && !e) dir = 7;
+			if (n && w && !s && !e) dir = 8;
+			if (n && e && !s && !w) dir = 9;
+		}
+		if (dir == -1)
+		{
+			if (n || s) dir = DIR_FLAT_Z;
+			if (w || e) dir = DIR_FLAT_X;
+
+			if (!usesDataBit)
+			{
+				if (hasSignal)
+				{
+					if (s && e) dir = 6;
+					if (w && s) dir = 7;
+					if (e && n) dir = 9;
+					if (n && w) dir = 8;
+				} else {
+					if (n && w) dir = 8;
+					if (e && n) dir = 9;
+					if (w && s) dir = 7;
+					if (s && e) dir = 6;
+				}
+			}
+		}
+
+		if (dir == DIR_FLAT_Z)
+		{
+			if (isRail(level, x, y + 1, z - 1)) dir = 4;
+			if (isRail(level, x, y + 1, z + 1)) dir = 5;
+		}
+		if (dir == DIR_FLAT_X)
+		{
+			if (isRail(level, x + 1, y + 1, z)) dir = 2;
+			if (isRail(level, x - 1, y + 1, z)) dir = 3;
+		}
+
+		if (dir < 0) dir = DIR_FLAT_Z;
+
+		updateConnections(dir);
+
+		int data = dir;
+		if (usesDataBit)
+		{
+			data = (level->getData(x, y, z) & RAIL_DATA_BIT) | dir;
+		}
+
+		if (first || level->getData(x, y, z) != data)
+		{
+			level->setData(x, y, z, data);
+
+			AUTO_VAR(itEnd, connections.end());
+			for (AUTO_VAR(it, connections.begin()); it != itEnd; it++)
+			{
+				Rail *neighbor = getRail(*it);
+				if (neighbor == NULL) continue;
+				neighbor->removeSoftConnections();
+
+				if (neighbor->canConnectTo(this))
+				{
+					neighbor->connectTo(this);
+				}
+				delete neighbor;
+			}
+		}
+	}
+}
+
+bool RailTile::isRail(Level *level, int x, int y, int z)
+{
+	int tile = level->getTile(x, y, z);
+	return tile == Tile::rail_Id || tile == Tile::goldenRail_Id || tile == Tile::detectorRail_Id;
+
+}
+
+bool RailTile::isRail(int id)
+{
+	return id == Tile::rail_Id || id == Tile::goldenRail_Id || id == Tile::detectorRail_Id;
+}
+
+RailTile::RailTile(int id, bool usesDataBit) : Tile(id, Material::decoration, isSolidRender())
+{
+	this->usesDataBit = usesDataBit;
+	this->setShape(0, 0, 0, 1, 2 / 16.0f, 1);
+
+	iconTurn = NULL;
+}
+
+bool RailTile::isUsesDataBit()
+{
+	return usesDataBit;
+}
+
+AABB *RailTile::getAABB(Level *level, int x, int y, int z)
+{
+	return NULL;
+}
+
+bool RailTile::blocksLight()
+{
+	return false;
+}
+
+bool RailTile::isSolidRender(bool isServerLevel)
+{
+	return false;
+}
+
+HitResult *RailTile::clip(Level *level, int xt, int yt, int zt, Vec3 *a, Vec3 *b)
+{
+	updateShape(level, xt, yt, zt);
+	return Tile::clip(level, xt, yt, zt, a, b);
+}
+
+void RailTile::updateShape(LevelSource *level, int x, int y, int z, int forceData, shared_ptr<TileEntity> forceEntity) // 4J added forceData, forceEntity param
+{
+	int data = level->getData(x, y, z);
+	if (data >= 2 && data <= 5)
+	{
+		setShape(0, 0, 0, 1, 2 / 16.0f + 0.5f, 1);
+	} else
+	{
+		setShape(0, 0, 0, 1, 2 / 16.0f, 1);
+	}
+}
+
+Icon *RailTile::getTexture(int face, int data)
+{
+	if (usesDataBit)
+	{
+		if (id == Tile::goldenRail_Id)
+		{
+			if ((data & RAIL_DATA_BIT) == 0)
+			{
+				return icon;
+			}
+			else
+			{
+				return iconTurn; // Actually the powered rail on version
+			}
+		}
+	} else if (data >= 6) return iconTurn;
+	return icon;
+}
+
+bool RailTile::isCubeShaped()
+{
+	return false;
+}
+
+int RailTile::getRenderShape()
+{
+	return Tile::SHAPE_RAIL;
+}
+
+int RailTile::getResourceCount(Random random)
+{
+	return 1;
+}
+
+bool RailTile::mayPlace(Level *level, int x, int y, int z)
+{
+	if (level->isTopSolidBlocking(x, y - 1, z))
+	{
+		return true;
+	}
+	return false;
+}
+
+void RailTile::onPlace(Level *level, int x, int y, int z)
+{
+	if (!level->isClientSide)
+	{
+		updateDir(level, x, y, z, true);
+
+		if (id == Tile::goldenRail_Id)
+		{
+			neighborChanged(level, x, y, z, id);
+		}
+	}
+}
+
+void RailTile::neighborChanged(Level *level, int x, int y, int z, int type)
+{
+	if (level->isClientSide) return;
+
+	int data = level->getData(x, y, z);
+	int dir = data;
+	if (usesDataBit) {
+		dir = dir & RAIL_DIRECTION_MASK;
+	}
+	bool remove = false;
+
+	if (!level->isTopSolidBlocking(x, y - 1, z)) remove = true;
+	if (dir == 2 && !level->isTopSolidBlocking(x + 1, y, z)) remove = true;
+	if (dir == 3 && !level->isTopSolidBlocking(x - 1, y, z)) remove = true;
+	if (dir == 4 && !level->isTopSolidBlocking(x, y, z - 1)) remove = true;
+	if (dir == 5 && !level->isTopSolidBlocking(x, y, z + 1)) remove = true;
+
+	if (remove)
+	{
+		this->spawnResources(level, x, y, z, level->getData(x, y, z), 0);
+		level->setTile(x, y, z, 0);
+	}
+	else
+	{
+		if (id == Tile::goldenRail_Id)
+		{
+			bool signal = level->hasNeighborSignal(x, y, z);
+			signal = signal || findGoldenRailSignal(level, x, y, z, data, true, 0) || findGoldenRailSignal(level, x, y, z, data, false, 0);
+
+			bool changed = false;
+			if (signal && (data & RAIL_DATA_BIT) == 0)
+			{
+				level->setData(x, y, z, dir | RAIL_DATA_BIT);
+				changed = true;
+			} else if (!signal && (data & RAIL_DATA_BIT) != 0)
+			{
+				level->setData(x, y, z, dir);
+				changed = true;
+			}
+
+			// usually the level only updates neighbors that are in the same
+			// y plane as the current tile, but sloped rails may need to
+			// update tiles above or below it as well
+			if (changed) {
+				level->updateNeighborsAt(x, y - 1, z, id);
+				if (dir == 2 || dir == 3 || dir == 4 || dir == 5)
+				{
+					level->updateNeighborsAt(x, y + 1, z, id);
+				}
+			}
+		}
+		else if (type > 0 && Tile::tiles[type]->isSignalSource() && !usesDataBit)
+		{
+			Rail *rail = new Rail(level, x, y, z);
+			if (rail->countPotentialConnections() == 3)
+			{
+				updateDir(level, x, y, z, false);
+			}
+			delete rail;
+		}
+	}
+
+}
+
+void RailTile::updateDir(Level *level, int x, int y, int z, bool first)
+{
+	if (level->isClientSide) return;
+	Rail *rail = new Rail(level, x, y, z);
+	rail->place(level->hasNeighborSignal(x, y, z), first);
+	delete rail;
+}
+
+bool RailTile::findGoldenRailSignal(Level *level, int x, int y, int z, int data, bool forward, int searchDepth)
+{
+	if (searchDepth >= 8)
+	{
+		return false;
+	}
+
+	int dir = data & RAIL_DIRECTION_MASK;
+
+	bool checkBelow = true;
+	switch (dir)
+	{
+	case DIR_FLAT_Z:
+		if (forward)
+		{
+			z++;
+		} else {
+			z--;
+		}
+		break;
+	case DIR_FLAT_X:
+		if (forward)
+		{
+			x--;
+		} else {
+			x++;
+		}
+		break;
+	case 2:
+		if (forward)
+		{
+			x--;
+		} else
+		{
+			x++;
+			y++;
+			checkBelow = false;
+		}
+		dir = DIR_FLAT_X;
+		break;
+	case 3:
+		if (forward)
+		{
+			x--;
+			y++;
+			checkBelow = false;
+		} else {
+			x++;
+		}
+		dir = DIR_FLAT_X;
+		break;
+	case 4:
+		if (forward)
+		{
+			z++;
+		} else {
+			z--;
+			y++;
+			checkBelow = false;
+		}
+		dir = DIR_FLAT_Z;
+		break;
+	case 5:
+		if (forward)
+		{
+			z++;
+			y++;
+			checkBelow = false;
+		} else
+		{
+			z--;
+		}
+		dir = DIR_FLAT_Z;
+		break;
+	}
+
+	if (isGoldenRailWithPower(level, x, y, z, forward, searchDepth, dir))
+	{
+		return true;
+	}
+	if (checkBelow && isGoldenRailWithPower(level, x, y - 1, z, forward, searchDepth, dir))
+	{
+		return true;
+	}
+	return false;
+
+}
+
+bool RailTile::isGoldenRailWithPower(Level *level, int x, int y, int z, bool forward, int searchDepth, int dir)
+{
+	int tile = level->getTile(x, y, z);
+	if (tile == Tile::goldenRail_Id)
+	{
+		int tileData = level->getData(x, y, z);
+		int myDir = tileData & RAIL_DIRECTION_MASK;
+
+		if (dir == DIR_FLAT_X && (myDir == DIR_FLAT_Z || myDir == 4 || myDir == 5))
+		{
+			return false;
+		}
+		if (dir == DIR_FLAT_Z && (myDir == DIR_FLAT_X || myDir == 2 || myDir == 3))
+		{
+			return false;
+		}
+
+		if ((tileData & RAIL_DATA_BIT) != 0)
+		{
+			if (level->hasNeighborSignal(x, y, z))
+			{
+				return true;
+			}
+			else
+			{
+				return findGoldenRailSignal(level, x, y, z, tileData, forward, searchDepth + 1);
+			}
+		}
+	}
+	return false;
+}
+
+int RailTile::getPistonPushReaction()
+{
+	return Material::PUSH_NORMAL;
+}
+
+void RailTile::registerIcons(IconRegister *iconRegister)
+{
+	Tile::registerIcons(iconRegister);
+	if(id == Tile::goldenRail_Id)
+	{
+		iconTurn = iconRegister->registerIcon(L"goldenRail_powered");
+	}
+	else
+	{
+		iconTurn = iconRegister->registerIcon(L"rail_turn");
+	}
+}
\ No newline at end of file