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package gregtech.api.graphs;
import static gregtech.api.enums.GT_Values.ALL_VALID_SIDES;
import static gregtech.api.util.GT_Utility.getOppositeSide;
import java.util.ArrayList;
import java.util.HashSet;
import net.minecraft.tileentity.TileEntity;
import gregtech.api.graphs.consumers.ConsumerNode;
import gregtech.api.graphs.paths.NodePath;
import gregtech.api.metatileentity.BaseMetaPipeEntity;
import gregtech.api.metatileentity.MetaPipeEntity;
// generates the node map
public abstract class GenerateNodeMap {
// clearing the node map to make sure it is gone on reset
public static void clearNodeMap(Node aNode, int aReturnNodeValue) {
if (aNode.mTileEntity instanceof BaseMetaPipeEntity tPipe) {
tPipe.setNode(null);
tPipe.setNodePath(null);
if (aNode.mSelfPath != null) {
aNode.mSelfPath.clearPath();
aNode.mSelfPath = null;
}
}
for (byte side : ALL_VALID_SIDES) {
final NodePath tPath = aNode.mNodePaths[side];
if (tPath != null) {
tPath.clearPath();
aNode.mNodePaths[side] = null;
}
final Node tNextNode = aNode.mNeighbourNodes[side];
if (tNextNode == null) continue;
if (tNextNode.mNodeValue != aReturnNodeValue) clearNodeMap(tNextNode, aNode.mNodeValue);
aNode.mNeighbourNodes[side] = null;
}
}
// get how many connections the pipe have
private static int getNumberOfConnections(MetaPipeEntity aPipe) {
int tCons = 0;
for (byte side : ALL_VALID_SIDES) {
if (aPipe.isConnectedAtSide(side)) tCons++;
}
return tCons;
}
// gets the next node
protected void generateNextNode(BaseMetaPipeEntity aPipe, Node aPipeNode, byte aInvalidSide, int aNextNodeValue,
ArrayList<ConsumerNode> tConsumers, HashSet<Node> tNodeMap) {
final MetaPipeEntity tMetaPipe = (MetaPipeEntity) aPipe.getMetaTileEntity();
for (byte side : ALL_VALID_SIDES) {
if (side == aInvalidSide) {
continue;
}
final TileEntity tNextTileEntity = aPipe.getTileEntityAtSide(side);
if (tNextTileEntity == null || (tMetaPipe != null && !tMetaPipe.isConnectedAtSide(side))) continue;
final ArrayList<MetaPipeEntity> tNewPipes = new ArrayList<>();
final Pair nextTileEntity = getNextValidTileEntity(tNextTileEntity, tNewPipes, side, tNodeMap);
if (nextTileEntity != null) {
final Node tNextNode = generateNode(
nextTileEntity.mTileEntity,
aPipeNode,
aNextNodeValue + 1,
tNewPipes,
nextTileEntity.mSide,
tConsumers,
tNodeMap);
if (tNextNode != null) {
aNextNodeValue = tNextNode.mHighestNodeValue;
aPipeNode.mHighestNodeValue = tNextNode.mHighestNodeValue;
aPipeNode.mNeighbourNodes[side] = tNextNode;
aPipeNode.mNodePaths[side] = aPipeNode.returnValues.mReturnPath;
aPipeNode.locks[side] = aPipeNode.returnValues.returnLock;
aPipeNode.mNodePaths[side].reloadLocks();
}
}
}
aPipe.reloadLocks();
}
// on a valid tile entity create a new node
protected Node generateNode(TileEntity aTileEntity, Node aPreviousNode, int aNextNodeValue,
ArrayList<MetaPipeEntity> aPipes, int aSide, ArrayList<ConsumerNode> aConsumers, HashSet<Node> aNodeMap) {
if (aTileEntity.isInvalid()) return null;
final byte tSideOp = getOppositeSide(aSide);
final byte tInvalidSide = aPreviousNode == null ? -1 : tSideOp;
Node tThisNode = null;
if (isPipe(aTileEntity)) {
final BaseMetaPipeEntity tPipe = (BaseMetaPipeEntity) aTileEntity;
final MetaPipeEntity tMetaPipe = (MetaPipeEntity) tPipe.getMetaTileEntity();
final int tConnections = getNumberOfConnections(tMetaPipe);
final Node tPipeNode;
if (tConnections == 1) {
tPipeNode = getEmptyNode(aNextNodeValue, tSideOp, aTileEntity, aConsumers);
if (tPipeNode == null) return null;
} else {
tPipeNode = getPipeNode(aNextNodeValue, tSideOp, aTileEntity, aConsumers);
}
tPipe.setNode(tPipeNode);
aNodeMap.add(tPipeNode);
tPipeNode.mSelfPath = getNewPath(new MetaPipeEntity[] { tMetaPipe });
tThisNode = tPipeNode;
if (tInvalidSide > -1) {
tPipeNode.mNeighbourNodes[tInvalidSide] = aPreviousNode;
tPipeNode.mNodePaths[tInvalidSide] = getNewPath(aPipes.toArray(new MetaPipeEntity[0]));
final Lock lock = new Lock();
tPipeNode.mNodePaths[tSideOp].lock = lock;
tPipeNode.locks[tInvalidSide] = lock;
aPreviousNode.returnValues.mReturnPath = tPipeNode.mNodePaths[tInvalidSide];
aPreviousNode.returnValues.returnLock = lock;
}
if (tConnections > 1)
generateNextNode(tPipe, tPipeNode, tInvalidSide, aNextNodeValue, aConsumers, aNodeMap);
} else if (addConsumer(aTileEntity, tSideOp, aNextNodeValue, aConsumers)) {
final ConsumerNode tConsumeNode = aConsumers.get(aConsumers.size() - 1);
tConsumeNode.mNeighbourNodes[tSideOp] = aPreviousNode;
tConsumeNode.mNodePaths[tSideOp] = getNewPath(aPipes.toArray(new MetaPipeEntity[0]));
final Lock lock = new Lock();
tConsumeNode.mNodePaths[tSideOp].lock = lock;
aPreviousNode.returnValues.mReturnPath = tConsumeNode.mNodePaths[tSideOp];
aPreviousNode.returnValues.returnLock = lock;
tThisNode = tConsumeNode;
}
return tThisNode;
}
// go over the pipes until we see a valid tile entity that needs a node
protected Pair getNextValidTileEntity(TileEntity aTileEntity, ArrayList<MetaPipeEntity> aPipes, byte aSide,
HashSet<Node> aNodeMap) {
if (isPipe(aTileEntity)) {
final BaseMetaPipeEntity tPipe = (BaseMetaPipeEntity) aTileEntity;
final MetaPipeEntity tMetaPipe = (MetaPipeEntity) tPipe.getMetaTileEntity();
final Node tNode = tPipe.getNode();
if (tNode != null) {
if (aNodeMap.contains(tNode)) return null;
}
final int tConnections = getNumberOfConnections(tMetaPipe);
if (tConnections == 2) {
final byte tSideOp = getOppositeSide(aSide);
for (byte i : ALL_VALID_SIDES) {
if (i == tSideOp || !(tMetaPipe.isConnectedAtSide(i))) continue;
final TileEntity tNewTileEntity = tPipe.getTileEntityAtSide(i);
if (tNewTileEntity == null) continue;
if (isPipe(tNewTileEntity)) {
aPipes.add(tMetaPipe);
return getNextValidTileEntity(tNewTileEntity, aPipes, i, aNodeMap);
} else {
return new Pair(aTileEntity, i);
}
}
} else {
return new Pair(aTileEntity, aSide);
}
} else {
return new Pair(aTileEntity, aSide);
}
return null;
}
// check if the tile entity is the correct pipe
protected boolean isPipe(TileEntity aTileEntity) {
return aTileEntity instanceof BaseMetaPipeEntity;
}
// checks if the tile entity is a consumer and add to the list
protected abstract boolean addConsumer(TileEntity aTileEntity, byte aSide, int aNodeValue,
ArrayList<ConsumerNode> aConsumers);
// get correct pathClass that you need for your node network
protected abstract NodePath getNewPath(MetaPipeEntity[] aPipes);
// used for if you need to use dead ends for something can be null
protected Node getEmptyNode(int aNodeValue, byte aSide, TileEntity aTileEntity,
ArrayList<ConsumerNode> aConsumers) {
return null;
}
// get correct node type you need for your network
protected Node getPipeNode(int aNodeValue, byte aSide, TileEntity aTileEntity, ArrayList<ConsumerNode> aConsumers) {
return new Node(aNodeValue, aTileEntity, aConsumers);
}
private static class Pair {
public byte mSide;
public TileEntity mTileEntity;
public Pair(TileEntity aTileEntity, byte aSide) {
this.mTileEntity = aTileEntity;
this.mSide = aSide;
}
}
}
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