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package gregtech.api.graphs;
import gregtech.api.graphs.consumers.ConsumerNode;
import gregtech.api.graphs.paths.NodePath;
import gregtech.api.metatileentity.*;
import net.minecraft.tileentity.TileEntity;
import java.util.ArrayList;
import java.util.HashSet;
import static gregtech.api.util.GT_Utility.getOppositeSide;
//generates the node map
abstract public 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) {
BaseMetaPipeEntity tPipe = (BaseMetaPipeEntity) aNode.mTileEntity;
tPipe.setNode(null);
tPipe.setNodePath(null);
if (aNode.mSelfPath != null) {
aNode.mSelfPath.clearPath();
aNode.mSelfPath = null;
}
}
for (int i = 0;i<6;i++) {
NodePath tPath = aNode.mNodePaths[i];
if (tPath != null) {
tPath.clearPath();
aNode.mNodePaths[i] = null;
}
Node tNextNode = aNode.mNeighbourNodes[i];
if (tNextNode == null) continue;
if (tNextNode.mNodeValue != aReturnNodeValue)
clearNodeMap(tNextNode,aNode.mNodeValue);
aNode.mNeighbourNodes[i] = null;
}
}
//gets the next node
protected void generateNextNode(BaseMetaPipeEntity aPipe, Node aPipeNode, byte aInvalidSide, int aNextNodeValue,
ArrayList<ConsumerNode> tConsumers, HashSet<Node> tNodeMap) {
MetaPipeEntity tMetaPipe = (MetaPipeEntity) aPipe.getMetaTileEntity();
for (byte i = 0;i<6;i++) {
if (i==aInvalidSide) {
continue;
}
TileEntity tNextTileEntity = aPipe.getTileEntityAtSide(i);
if (tNextTileEntity == null || (tMetaPipe != null && !tMetaPipe.isConnectedAtSide(i))) continue;
ArrayList<MetaPipeEntity> tNewPipes = new ArrayList<MetaPipeEntity>();
Pair nextTileEntity = getNextValidTileEntity(tNextTileEntity,tNewPipes,i,tNodeMap);
if (nextTileEntity != null) {
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[i] = tNextNode;
aPipeNode.mNodePaths[i] = aPipeNode.mReturnPath;
}
}
}
}
//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;
byte tSideOp = getOppositeSide(aSide);
byte tInvalidSide = aPreviousNode == null ? -1 : tSideOp;
Node tThisNode = null;
if (isPipe(aTileEntity)){
BaseMetaPipeEntity tPipe = (BaseMetaPipeEntity) aTileEntity;
MetaPipeEntity tMetaPipe = (MetaPipeEntity) tPipe.getMetaTileEntity();
int tConnections = getNumberOfConnections(tMetaPipe);
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]));
aPreviousNode.mReturnPath = tPipeNode.mNodePaths[tInvalidSide];
}
if (tConnections > 1)
generateNextNode(tPipe,tPipeNode,tInvalidSide,aNextNodeValue,aConsumers,aNodeMap);
} else if (addConsumer(aTileEntity,tSideOp,aNextNodeValue,aConsumers)) {
ConsumerNode tConsumeNode = aConsumers.get(aConsumers.size()-1);
tConsumeNode.mNeighbourNodes[tSideOp] = aPreviousNode;
tConsumeNode.mNodePaths[tSideOp] = getNewPath(aPipes.toArray(new MetaPipeEntity[0]));
aPreviousNode.mReturnPath = tConsumeNode.mNodePaths[tSideOp];
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)) {
BaseMetaPipeEntity tPipe = (BaseMetaPipeEntity) aTileEntity;
MetaPipeEntity tMetaPipe = (MetaPipeEntity) tPipe.getMetaTileEntity();
Node tNode = tPipe.getNode();
if (tNode != null) {
if (aNodeMap.contains(tNode))
return null;
}
int tConnections = getNumberOfConnections(tMetaPipe);
if (tConnections == 2) {
byte tSideOp = getOppositeSide(aSide);
for (byte i = 0;i<6;i++) {
if (i == tSideOp || !(tMetaPipe.isConnectedAtSide(i))) continue;
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;
}
private static class Pair {
public byte mSide;
public TileEntity mTileEntity;
public Pair(TileEntity aTileEntity, byte aSide) {
this.mTileEntity = aTileEntity;
this.mSide = aSide;
}
}
//if 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
abstract protected 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 death 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);
}
//get how many connections the pipe have
private static int getNumberOfConnections(MetaPipeEntity aPipe) {
int tCons = 0;
for (int i = 0; i < 6; i++) {
if (aPipe.isConnectedAtSide(i)) tCons++;
}
return tCons;
}
}
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