74 lines
2.6 KiB
C#
74 lines
2.6 KiB
C#
using System.Collections.Generic;
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using Content.Server.NodeContainer;
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using Content.Server.NodeContainer.Nodes;
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using Robust.Shared.GameObjects;
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using Robust.Shared.Map;
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using Robust.Shared.Maths;
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using Robust.Shared.Serialization.Manager.Attributes;
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namespace Content.Server.Power.Nodes
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{
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[DataDefinition]
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public sealed class CableNode : Node
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{
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public override IEnumerable<Node> GetReachableNodes(TransformComponent xform,
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EntityQuery<NodeContainerComponent> nodeQuery,
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EntityQuery<TransformComponent> xformQuery,
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IMapGrid? grid,
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IEntityManager entMan)
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{
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if (!xform.Anchored || grid == null)
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yield break;
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var gridIndex = grid.TileIndicesFor(xform.Coordinates);
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// While we go over adjacent nodes, we build a list of blocked directions due to
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// incoming or outgoing wire terminals.
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var terminalDirs = 0;
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List<(Direction, Node)> nodeDirs = new();
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foreach (var (dir, node) in NodeHelpers.GetCardinalNeighborNodes(nodeQuery, grid, gridIndex))
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{
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if (node is CableNode && node != this)
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{
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nodeDirs.Add((dir, node));
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}
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if (node is CableDeviceNode && dir == Direction.Invalid)
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{
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// device on same tile
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nodeDirs.Add((Direction.Invalid, node));
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}
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if (node is CableTerminalNode)
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{
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if (dir == Direction.Invalid)
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{
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// On own tile, block direction it faces
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terminalDirs |= 1 << (int) xformQuery.GetComponent(node.Owner).LocalRotation.GetCardinalDir();
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}
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else
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{
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var terminalDir = xformQuery.GetComponent(node.Owner).LocalRotation.GetCardinalDir();
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if (terminalDir.GetOpposite() == dir)
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{
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// Target tile has a terminal towards us, block the direction.
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terminalDirs |= 1 << (int) dir;
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break;
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}
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}
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}
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}
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foreach (var (dir, node) in nodeDirs)
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{
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// If there is a wire terminal connecting across this direction, skip the node.
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if (dir != Direction.Invalid && (terminalDirs & (1 << (int) dir)) != 0)
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continue;
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yield return node;
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}
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}
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}
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}
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