public static void RightClick(RemoteClient client, MinecraftServer server, IPacket _packet)
{
var packet = (RightClickPacket)_packet;
var slot = client.Entity.Inventory[client.Entity.SelectedSlot];
var position = new Coordinates3D(packet.X, packet.Y, packet.Z);
var cursorPosition = new Coordinates3D(packet.CursorX, packet.CursorY, packet.CursorZ);
BlockInfo?block = null;
if (position != -Coordinates3D.One)
{
if (position.DistanceTo((Coordinates3D)client.Entity.Position) > client.Reach)
{
return;
}
block = client.World.GetBlockInfo(position);
}
bool use = true;
if (block != null)
{
use = client.World.RightClickBlock(position, packet.Face, cursorPosition, slot.AsItem());
}
if (!slot.Empty)
{
var item = slot.AsItem();
if (use)
{
if (block != null)
{
client.World.UseItemOnBlock(position, packet.Face, cursorPosition, item.Value);
if (item.Value.ItemId < 0x100)
{
client.SendPacket(new SoundEffectPacket(Block.GetPlacementSoundEffect(item.Value.ItemId),
position.X, position.Y, position.Z, SoundEffectPacket.DefaultVolume, SoundEffectPacket.DefaultPitch));
}
if (client.GameMode != GameMode.Creative)
{
slot.Count--; // TODO: This is probably a bad place to put this code
if (slot.Count == 0)
{
client.Entity.Inventory[client.Entity.SelectedSlot] = ItemStack.EmptyStack;
}
else
{
client.Entity.Inventory[client.Entity.SelectedSlot] = slot;
}
}
}
else
{
client.World.UseItemOnBlock(position, packet.Face, cursorPosition, item.Value);
if (item.Value.ItemId < 0x100)
{
client.SendPacket(new SoundEffectPacket(Block.GetPlacementSoundEffect(item.Value.ItemId),
position.X, position.Y, position.Z, SoundEffectPacket.DefaultVolume, SoundEffectPacket.DefaultPitch));
}
}
}
}
}
public static void HandlePlayerBlockPlacementPacket(IPacket _packet, IRemoteClient _client,
IMultiPlayerServer server)
{
var packet = (PlayerBlockPlacementPacket)_packet;
var client = (RemoteClient)_client;
var slot = client.SelectedItem;
var position = new Coordinates3D(packet.X, packet.Y, packet.Z);
BlockDescriptor?block;
if (position != -Coordinates3D.One)
{
if (position.DistanceTo((Coordinates3D)client.Entity.Position) > 10 /* TODO: Reach */)
{
return;
}
block = client.World.GetBlockData(position);
}
else
{
return;
}
var provider = server.BlockRepository.GetBlockProvider(block.Value.Id);
if (provider == null)
{
server.SendMessage($"{ChatColor.Red}WARNING: block provider for Id {{0}} is null (player placing)", block.Value.Id);
server.SendMessage($"{ChatColor.Red}Error occured from client {{0}} at coordinates {{1}}", client.Username, block.Value.Coordinates);
server.SendMessage($"{ChatColor.Red}Packet logged at {{0}}, please report upstream", DateTime.UtcNow);
return;
}
if (!provider.BlockRightClicked(block.Value, packet.Face, client.World, client))
{
position += MathHelper.BlockFaceToCoordinates(packet.Face);
var oldId = client.World.GetBlockId(position);
var oldMeta = client.World.GetMetadata(position);
client.QueuePacket(new BlockChangePacket(position.X, (sbyte)position.Y, position.Z, (sbyte)oldId, (sbyte)oldMeta));
client.QueuePacket(new SetSlotPacket(0, client.SelectedSlot, client.SelectedItem.Id, client.SelectedItem.Count, client.SelectedItem.Metadata));
return;
}
if (!slot.Empty)
{
var itemProvider = server.ItemRepository.GetItemProvider(slot.Id);
if (itemProvider == null)
{
server.SendMessage(ChatColor.Red + "WARNING: item provider for Id {0} is null (player placing)",
block.Value.Id);
server.SendMessage(ChatColor.Red + "Error occured from client {0} at coordinates {1}",
client.Username, block.Value.Coordinates);
server.SendMessage(ChatColor.Red + "Packet logged at {0}, please report upstream",
DateTime.UtcNow);
}
itemProvider?.ItemUsedOnBlock(position, slot, packet.Face, client.World, client);
}
}
public PathResult FindPath(IWorld world, BoundingBox subject, Coordinates3D start, Coordinates3D goal)
{
// Thanks to www.redblobgames.com/pathfinding/a-star/implementation.html
var parents = new Dictionary <Coordinates3D, Coordinates3D>();
var costs = new Dictionary <Coordinates3D, double>();
var openset = new PriorityQueue <Coordinates3D>();
var closedset = new HashSet <Coordinates3D>();
openset.Enqueue(start, 0);
parents[start] = start;
costs[start] = start.DistanceTo(goal);
while (openset.Count > 0)
{
var current = openset.Dequeue();
if (current == goal)
{
return(TracePath(start, goal, parents));
}
closedset.Add(current);
foreach (var next in GetNeighbors(world, subject, current))
{
if (closedset.Contains(next))
{
continue;
}
var cost = (int)(costs[current] + current.DistanceTo(next));
if (!costs.ContainsKey(next) || cost < costs[next])
{
costs[next] = cost;
var priority = cost + next.DistanceTo(goal);
openset.Enqueue(next, priority);
parents[next] = current;
}
}
}
return(null);
}
public PathResult FindPath(IWorld world, BoundingBox subject, Coordinates3D start, Coordinates3D goal)
{
// Thanks to www.redblobgames.com/pathfinding/a-star/implementation.html
var parents = new Dictionary<Coordinates3D, Coordinates3D>();
var costs = new Dictionary<Coordinates3D, double>();
var openset = new PriorityQueue<Coordinates3D>();
var closedset = new HashSet<Coordinates3D>();
openset.Enqueue(start, 0);
parents[start] = start;
costs[start] = start.DistanceTo(goal);
while (openset.Count > 0)
{
var current = openset.Dequeue();
if (current == goal)
return TracePath(start, goal, parents);
closedset.Add(current);
foreach (var next in GetNeighbors(world, subject, current))
{
if (closedset.Contains(next))
continue;
var cost = (int)(costs[current] + current.DistanceTo(next));
if (!costs.ContainsKey(next) || cost < costs[next])
{
costs[next] = cost;
var priority = cost + next.DistanceTo(goal);
openset.Enqueue(next, priority);
parents[next] = current;
}
}
}
return null;
}
public PathResult FindPath(IWorld world, BoundingBox subject, Coordinates3D start, Coordinates3D goal)
{
// Thanks to www.redblobgames.com/pathfinding/a-star/implementation.html
var parents = new Dictionary<Coordinates3D, Coordinates3D>();
var costs = new Dictionary<Coordinates3D, double>();
var openset = new PriorityQueue<Coordinates3D>();
var closedset = new HashSet<Coordinates3D>();
openset.Enqueue(start, 0);
parents[start] = start;
costs[start] = start.DistanceTo(goal);
while (openset.Count > 0)
{
var current = openset.Dequeue();
if (current == goal)
return TracePath(start, goal, parents);
closedset.Add(current);
// Test directly adjacent voxels
for (int i = 0; i < Neighbors.Length; i++)
{
var next = Neighbors[i] + current;
if (closedset.Contains(next))
continue;
if (!CanOccupyVoxel(world, subject, next))
continue;
var cost = (int)(costs[current] + current.DistanceTo(next));
if (!costs.ContainsKey(next) || cost < costs[next])
{
costs[next] = cost;
var priority = cost + next.DistanceTo(goal);
openset.Enqueue(next, priority);
parents[next] = current;
}
}
// Test diagonally
for (int i = 0; i < DiagonalNeighbors.Length; i++)
{
var pair = DiagonalNeighbors[i];
var next = pair[0] + pair[1] + current;
if (closedset.Contains(next))
continue;
if (!CanOccupyVoxel(world, subject, next))
continue;
if (!CanOccupyVoxel(world, subject, pair[0] + current))
continue;
if (!CanOccupyVoxel(world, subject, pair[1] + current))
continue;
var cost = (int)(costs[current] + current.DistanceTo(next));
if (!costs.ContainsKey(next) || cost < costs[next])
{
costs[next] = cost;
var priority = cost + next.DistanceTo(goal);
openset.Enqueue(next, priority);
parents[next] = current;
}
}
}
return null;
}
/// <summary>
/// Produces a list of outward flow targets that this block may flow towards.
/// </summary>
protected LiquidFlow[] DetermineOutwardFlow(IWorld world, Coordinates3D coords)
{
// The maximum distance we will search for lower ground to flow towards
const int dropCheckDistance = 5;
var outwardFlow = new List<LiquidFlow>(5);
var currentLevel = world.GetMetadata(coords);
var blockBelow = world.BlockRepository.GetBlockProvider(world.GetBlockID(coords + Coordinates3D.Down));
if (blockBelow.Hardness == 0 && blockBelow.ID != FlowingID && blockBelow.ID != StillID)
{
outwardFlow.Add(new LiquidFlow(coords + Coordinates3D.Down, 1));
if (currentLevel != 0)
return outwardFlow.ToArray();
}
if (currentLevel < MaximumFluidDepletion)
{
// This code is responsible for seeking out candidates for flowing towards.
// Fluid in Minecraft will flow in the direction of the nearest drop-off where
// there is at least one block removed on the Y axis.
// It will flow towards several equally strong candidates at once.
var candidateFlowPoints = new List<Coordinates3D>(4);
var furthestPossibleCandidate = new Coordinates3D(x: dropCheckDistance + 1, z: dropCheckDistance + 1) + Coordinates3D.Down;
var nearestCandidate = furthestPossibleCandidate;
for (int x = -dropCheckDistance; x < dropCheckDistance; x++)
{
for (int z = -dropCheckDistance; z < dropCheckDistance; z++)
{
if (Math.Abs(z) + Math.Abs(x) > dropCheckDistance)
continue;
var check = new Coordinates3D(x: x, z: z) + Coordinates3D.Down;
var c = world.BlockRepository.GetBlockProvider(world.GetBlockID(check + coords));
if (c.Hardness == 0)
{
if (!LineOfSight(world, check + coords, coords))
continue;
if (coords.DistanceTo(check + coords) == coords.DistanceTo(nearestCandidate + coords))
candidateFlowPoints.Add(check);
if (coords.DistanceTo(check + coords) < coords.DistanceTo(nearestCandidate + coords))
{
candidateFlowPoints.Clear();
nearestCandidate = check;
}
}
}
}
if (nearestCandidate == furthestPossibleCandidate)
{
candidateFlowPoints.Add(new Coordinates3D(x: -dropCheckDistance - 1, z: dropCheckDistance + 1) + Coordinates3D.Down);
candidateFlowPoints.Add(new Coordinates3D(x: dropCheckDistance + 1, z: -dropCheckDistance - 1) + Coordinates3D.Down);
candidateFlowPoints.Add(new Coordinates3D(x: -dropCheckDistance - 1, z: -dropCheckDistance - 1) + Coordinates3D.Down);
}
candidateFlowPoints.Add(nearestCandidate);
// For each candidate, determine if we are actually capable of flowing towards it.
// We are able to flow through blocks with a hardness of zero, but no others. We are
// not able to flow through established fluid blocks.
for (int i = 0; i < candidateFlowPoints.Count; i++)
{
var location = candidateFlowPoints[i];
location.Clamp(1);
var xCoordinateCheck = new Coordinates3D(x: location.X) + coords;
var zCoordinateCheck = new Coordinates3D(z: location.Z) + coords;
var xID = world.BlockRepository.GetBlockProvider(world.GetBlockID(xCoordinateCheck));
var zID = world.BlockRepository.GetBlockProvider(world.GetBlockID(zCoordinateCheck));
if (xID.Hardness == 0 && xID.ID != FlowingID && xID.ID != StillID)
{
if (outwardFlow.All(f => f.TargetBlock != xCoordinateCheck))
outwardFlow.Add(new LiquidFlow(xCoordinateCheck, (byte)(currentLevel + 1)));
}
if (zID.Hardness == 0 && zID.ID != FlowingID && zID.ID != StillID)
{
if (outwardFlow.All(f => f.TargetBlock != zCoordinateCheck))
outwardFlow.Add(new LiquidFlow(zCoordinateCheck, (byte)(currentLevel + 1)));
}
}
// Occasionally, there are scenarios where the nearest candidate hole is not acceptable, but
// there is space immediately next to the block. We should fill that space.
if (outwardFlow.Count == 0 && blockBelow.ID != FlowingID && blockBelow.ID != StillID)
{
for (int i = 0; i < Neighbors.Length; i++)
{
var b = world.BlockRepository.GetBlockProvider(world.GetBlockID(coords + Neighbors[i]));
if (b.Hardness == 0 && b.ID != StillID && b.ID != FlowingID)
outwardFlow.Add(new LiquidFlow(Neighbors[i] + coords, (byte)(currentLevel + 1)));
}
}
}
return outwardFlow.ToArray();
}
/// <summary>
/// Produces a list of outward flow targets that this block may flow towards.
/// </summary>
protected LiquidFlow[] DetermineOutwardFlow(IWorld world, Coordinates3D coords)
{
// The maximum distance we will search for lower ground to flow towards
const int dropCheckDistance = 5;
var outwardFlow = new List <LiquidFlow>(5);
var currentLevel = world.GetMetadata(coords);
var blockBelow = world.BlockRepository.GetBlockProvider(world.GetBlockID(coords + Coordinates3D.Down));
if (blockBelow.Hardness == 0 && blockBelow.ID != FlowingID && blockBelow.ID != StillID)
{
outwardFlow.Add(new LiquidFlow(coords + Coordinates3D.Down, 1));
if (currentLevel != 0)
{
return(outwardFlow.ToArray());
}
}
if (currentLevel < MaximumFluidDepletion)
{
// This code is responsible for seeking out candidates for flowing towards.
// Fluid in Minecraft will flow in the direction of the nearest drop-off where
// there is at least one block removed on the Y axis.
// It will flow towards several equally strong candidates at once.
var candidateFlowPoints = new List <Coordinates3D>(4);
var furthestPossibleCandidate = new Coordinates3D(x: dropCheckDistance + 1, z: dropCheckDistance + 1) + Coordinates3D.Down;
var nearestCandidate = furthestPossibleCandidate;
for (int x = -dropCheckDistance; x < dropCheckDistance; x++)
{
for (int z = -dropCheckDistance; z < dropCheckDistance; z++)
{
if (Math.Abs(z) + Math.Abs(x) > dropCheckDistance)
{
continue;
}
var check = new Coordinates3D(x: x, z: z) + Coordinates3D.Down;
var c = world.BlockRepository.GetBlockProvider(world.GetBlockID(check + coords));
if (c.Hardness == 0)
{
if (!LineOfSight(world, check + coords, coords))
{
continue;
}
if (coords.DistanceTo(check + coords) == coords.DistanceTo(nearestCandidate + coords))
{
candidateFlowPoints.Add(check);
}
if (coords.DistanceTo(check + coords) < coords.DistanceTo(nearestCandidate + coords))
{
candidateFlowPoints.Clear();
nearestCandidate = check;
}
}
}
}
if (nearestCandidate == furthestPossibleCandidate)
{
candidateFlowPoints.Add(new Coordinates3D(x: -dropCheckDistance - 1, z: dropCheckDistance + 1) + Coordinates3D.Down);
candidateFlowPoints.Add(new Coordinates3D(x: dropCheckDistance + 1, z: -dropCheckDistance - 1) + Coordinates3D.Down);
candidateFlowPoints.Add(new Coordinates3D(x: -dropCheckDistance - 1, z: -dropCheckDistance - 1) + Coordinates3D.Down);
}
candidateFlowPoints.Add(nearestCandidate);
// For each candidate, determine if we are actually capable of flowing towards it.
// We are able to flow through blocks with a hardness of zero, but no others. We are
// not able to flow through established fluid blocks.
for (int i = 0; i < candidateFlowPoints.Count; i++)
{
var location = candidateFlowPoints[i];
location.Clamp(1);
var xCoordinateCheck = new Coordinates3D(x: location.X) + coords;
var zCoordinateCheck = new Coordinates3D(z: location.Z) + coords;
var xID = world.BlockRepository.GetBlockProvider(world.GetBlockID(xCoordinateCheck));
var zID = world.BlockRepository.GetBlockProvider(world.GetBlockID(zCoordinateCheck));
if (xID.Hardness == 0 && xID.ID != FlowingID && xID.ID != StillID)
{
if (outwardFlow.All(f => f.TargetBlock != xCoordinateCheck))
{
outwardFlow.Add(new LiquidFlow(xCoordinateCheck, (byte)(currentLevel + 1)));
}
}
if (zID.Hardness == 0 && zID.ID != FlowingID && zID.ID != StillID)
{
if (outwardFlow.All(f => f.TargetBlock != zCoordinateCheck))
{
outwardFlow.Add(new LiquidFlow(zCoordinateCheck, (byte)(currentLevel + 1)));
}
}
}
// Occasionally, there are scenarios where the nearest candidate hole is not acceptable, but
// there is space immediately next to the block. We should fill that space.
if (outwardFlow.Count == 0 && blockBelow.ID != FlowingID && blockBelow.ID != StillID)
{
for (int i = 0; i < Neighbors.Length; i++)
{
var b = world.BlockRepository.GetBlockProvider(world.GetBlockID(coords + Neighbors[i]));
if (b.Hardness == 0 && b.ID != StillID && b.ID != FlowingID)
{
outwardFlow.Add(new LiquidFlow(Neighbors[i] + coords, (byte)(currentLevel + 1)));
}
}
}
}
return(outwardFlow.ToArray());
}
public static void RightClick(RemoteClient client, MinecraftServer server, IPacket _packet)
{
var packet = (RightClickPacket)_packet;
var slot = client.Entity.Inventory[client.Entity.SelectedSlot];
var position = new Coordinates3D(packet.X, packet.Y, packet.Z);
var cursorPosition = new Coordinates3D(packet.CursorX, packet.CursorY, packet.CursorZ);
BlockDescriptor? block = null;
if (position != -Coordinates3D.One)
{
if (position.DistanceTo(client.Entity.Position) > client.Reach)
return;
block = client.World.GetBlock(position);
}
bool use = true;
if (block != null)
use = Block.OnBlockRightClicked(block.Value, client.World, position, AdjustByDirection(packet.Direction), cursorPosition);
if (!slot.Empty)
{
var item = new ItemDescriptor(slot.Id, slot.Metadata);
if (use)
{
if (block != null)
{
Item.OnItemUsedOnBlock(item, client.World, position, AdjustByDirection(packet.Direction), cursorPosition);
if (client.GameMode != GameMode.Creative)
{
slot.Count--; // TODO: This is probably a bad place to put this code
if (slot.Count == 0)
client.Entity.Inventory[client.Entity.SelectedSlot] = ItemStack.EmptyStack;
else
client.Entity.Inventory[client.Entity.SelectedSlot] = slot;
}
}
else
Item.OnItemUsed(item);
}
}
}
public static void HandlePlayerBlockPlacementPacket(IPacket _packet, IRemoteClient _client, IMultiplayerServer server)
{
var packet = (PlayerBlockPlacementPacket)_packet;
var client = (RemoteClient)_client;
var slot = client.SelectedItem;
var position = new Coordinates3D(packet.X, packet.Y, packet.Z);
BlockDescriptor? block = null;
if (position != -Coordinates3D.One)
{
if (position.DistanceTo((Coordinates3D)client.Entity.Position) > 10 /* TODO: Reach */)
return;
block = client.World.GetBlockData(position);
}
else
{
// TODO: Handle situations like firing arrows and such? Is that how it works?
return;
}
bool use = true;
if (block != null)
{
var provider = server.BlockRepository.GetBlockProvider(block.Value.ID);
if (provider == null)
{
server.SendMessage(ChatColor.Red + "WARNING: block provider for ID {0} is null (player placing)", block.Value.ID);
server.SendMessage(ChatColor.Red + "Error occured from client {0} at coordinates {1}", client.Username, block.Value.Coordinates);
server.SendMessage(ChatColor.Red + "Packet logged at {0}, please report upstream", DateTime.Now);
return;
}
if (!provider.BlockRightClicked(block.Value, packet.Face, client.World, client))
{
position += MathHelper.BlockFaceToCoordinates(packet.Face);
var oldID = client.World.GetBlockID(position);
var oldMeta = client.World.GetMetadata(position);
client.QueuePacket(new BlockChangePacket(position.X, (sbyte)position.Y, position.Z, (sbyte)oldID, (sbyte)oldMeta));
client.QueuePacket(new SetSlotPacket(0, client.SelectedSlot, client.SelectedItem.ID, client.SelectedItem.Count, client.SelectedItem.Metadata));
return;
}
}
if (!slot.Empty)
{
if (use)
{
var itemProvider = server.ItemRepository.GetItemProvider(slot.ID);
if (itemProvider == null)
{
server.SendMessage(ChatColor.Red + "WARNING: item provider for ID {0} is null (player placing)", block.Value.ID);
server.SendMessage(ChatColor.Red + "Error occured from client {0} at coordinates {1}", client.Username, block.Value.Coordinates);
server.SendMessage(ChatColor.Red + "Packet logged at {0}, please report upstream", DateTime.Now);
}
if (block != null)
{
if (itemProvider != null)
itemProvider.ItemUsedOnBlock(position, slot, packet.Face, client.World, client);
}
else
{
// TODO: Use item
}
}
}
}
public static void RightClick(RemoteClient client, MinecraftServer server, IPacket _packet)
{
var packet = (RightClickPacket)_packet;
var slot = client.Entity.Inventory[client.Entity.SelectedSlot];
var position = new Coordinates3D(packet.X, packet.Y, packet.Z);
var cursorPosition = new Coordinates3D(packet.CursorX, packet.CursorY, packet.CursorZ);
BlockInfo? block = null;
if (position != -Coordinates3D.One)
{
if (position.DistanceTo((Coordinates3D)client.Entity.Position) > client.Reach)
return;
block = client.World.GetBlockInfo(position);
}
bool use = true;
if (block != null)
use = client.World.RightClickBlock(position, packet.Face, cursorPosition, slot.AsItem());
if (!slot.Empty)
{
var item = slot.AsItem();
if (use)
{
if (block != null)
{
client.World.UseItemOnBlock(position, packet.Face, cursorPosition, item.Value);
if (item.Value.ItemId < 0x100)
{
client.SendPacket(new SoundEffectPacket(Block.GetPlacementSoundEffect(item.Value.ItemId),
position.X, position.Y, position.Z, SoundEffectPacket.DefaultVolume, SoundEffectPacket.DefaultPitch));
}
if (client.GameMode != GameMode.Creative)
{
slot.Count--; // TODO: This is probably a bad place to put this code
if (slot.Count == 0)
client.Entity.Inventory[client.Entity.SelectedSlot] = ItemStack.EmptyStack;
else
client.Entity.Inventory[client.Entity.SelectedSlot] = slot;
}
}
else
{
client.World.UseItemOnBlock(position, packet.Face, cursorPosition, item.Value);
if (item.Value.ItemId < 0x100)
{
client.SendPacket(new SoundEffectPacket(Block.GetPlacementSoundEffect(item.Value.ItemId),
position.X, position.Y, position.Z, SoundEffectPacket.DefaultVolume, SoundEffectPacket.DefaultPitch));
}
}
}
}
}
