public void Execute(ArchetypeChunk chunk, int chunkIndex, int firstEntityIndex)
{
//Writeable.
NativeArray <PathFinding> pathfindingArray = chunk.GetNativeArray(pathFindingComponentHandle);
BufferAccessor <PathNode> pathNodeBufferAccessor = chunk.GetBufferAccessor(pathNodeBufferHandle);
//Read Only.
NativeArray <CurrentTarget> currentTargetArray = chunk.GetNativeArray(currentTargetComponentHandle);
NativeArray <Translation> translationArray = chunk.GetNativeArray(translationComponentHandle);
NativeArray <Entity> entities = chunk.GetNativeArray(entityType);
//Create a copy of the grid for this thread and chunk.
NativeArray2D <MapNode> gridCopy = new NativeArray2D <MapNode>(gridRef.Length0, gridRef.Length1, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
UnsafeUtility.MemCpy(gridCopy.GetUnsafePtr(), gridRef.GetUnsafePtrReadOnly(), gridRef.Length * sizeof(MapNode));
for (int indexInChunk = 0; indexInChunk < chunk.Count; ++indexInChunk)
{
//Writable.
PathFinding pathfinding = pathfindingArray[indexInChunk];
DynamicBuffer <PathNode> path = pathNodeBufferAccessor[indexInChunk];
//Read Only.
Entity entity = entities[indexInChunk];
CurrentTarget currentTarget = currentTargetArray[indexInChunk];
Translation translation = translationArray[indexInChunk];
bool hasPath = chunk.Has(hasPathComponentHandle);
if (!pathfinding.requestedPath)
{
//We only want to remove our has path component if we didn't request a new one, to avoid re-adding later in the job if we find a new path.
if (pathfinding.completedPath)
{
pathfinding.completedPath = false;
ecb.RemoveComponent <HasPathTag>(chunkIndex, entity);
pathfindingArray[indexInChunk] = pathfinding;
}
continue;
}
path.Clear();
pathfinding.currentIndexOnPath = 0;
pathfinding.completedPath = false;
pathfinding.requestedPath = false;
//Calculate the closest nodes to us and our target position.
//Don't search for path if we're already at our target node.
pathfinding.currentNode = FindNearestNode(translation.Value, gridCopy);
pathfinding.targetNode = FindNearestNode(currentTarget.targetData.targetPos, gridCopy);
if (pathfinding.targetNode.Equals(pathfinding.currentNode))
{
pathfindingArray[indexInChunk] = pathfinding;
continue;
}
CalculateGridH(gridCopy, ref pathfinding);
bool pathfound = SearchForPath(pathfinding.currentNode, pathfinding.targetNode, gridCopy);
if (pathfound)
{
ConstructPath(gridCopy, ref pathfinding, ref path);
if (!hasPath)
{
ecb.AddComponent <HasPathTag>(chunkIndex, entity);
}
}
else if (hasPath)
{
ecb.RemoveComponent <HasPathTag>(chunkIndex, entity);
}
pathfindingArray[indexInChunk] = pathfinding;
}
gridCopy.Dispose();
}