67 lines
2.0 KiB
C#
67 lines
2.0 KiB
C#
using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Content.Server.NPC.Pathfinding;
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namespace Content.Server.NPC.HTN.PrimitiveTasks.Operators;
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/// <summary>
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/// Chooses a nearby coordinate and puts it into the resulting key.
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/// </summary>
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public sealed class PickAccessibleOperator : HTNOperator
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{
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[Dependency] private readonly IEntityManager _entManager = default!;
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private PathfindingSystem _pathfinding = default!;
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[DataField("rangeKey", required: true)]
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public string RangeKey = string.Empty;
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[DataField("targetKey", required: true)]
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public string TargetKey = string.Empty;
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/// <summary>
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/// Where the pathfinding result will be stored (if applicable). This gets removed after execution.
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/// </summary>
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[DataField("pathfindKey")]
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public string PathfindKey = NPCBlackboard.PathfindKey;
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public override void Initialize(IEntitySystemManager sysManager)
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{
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base.Initialize(sysManager);
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_pathfinding = sysManager.GetEntitySystem<PathfindingSystem>();
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}
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/// <inheritdoc/>
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public override async Task<(bool Valid, Dictionary<string, object>? Effects)> Plan(NPCBlackboard blackboard,
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CancellationToken cancelToken)
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{
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// Very inefficient (should weight each region by its node count) but better than the old system
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var owner = blackboard.GetValue<EntityUid>(NPCBlackboard.Owner);
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blackboard.TryGetValue<float>(RangeKey, out var maxRange, _entManager);
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if (maxRange == 0f)
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maxRange = 7f;
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var path = await _pathfinding.GetRandomPath(
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owner,
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1.4f,
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maxRange,
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cancelToken,
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flags: _pathfinding.GetFlags(blackboard));
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if (path.Result != PathResult.Path)
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{
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return (false, null);
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}
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var target = path.Path.Last().Coordinates;
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return (true, new Dictionary<string, object>()
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{
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{ TargetKey, target },
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{ PathfindKey, path}
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});
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}
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}
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