save structure placed at block

core/src/main/java/com/volmit/iris/engine/IrisEngine.java

@@ -47,6 +47,7 @@ import com.volmit.iris.util.mantle.MantleFlag;
 import com.volmit.iris.util.math.M;
 import com.volmit.iris.util.math.RNG;
 import com.volmit.iris.util.matter.MatterStructurePOI;
+import com.volmit.iris.util.matter.slices.container.JigsawStructureContainer;
 import com.volmit.iris.util.scheduling.ChronoLatch;
 import com.volmit.iris.util.scheduling.J;
 import com.volmit.iris.util.scheduling.PrecisionStopwatch;
@@ -223,6 +224,12 @@ public class IrisEngine implements Engine {
         return getMantle().getJigsawComponent().guess(x, z);
     }
 
+    @Override
+    public IrisJigsawStructure getStructureAt(int x, int y, int z) {
+        var container = getMantle().getMantle().get(x, y, z, JigsawStructureContainer.class);
+        return container == null ? null : container.load(getData());
+    }
+
     private void warmupChunk(int x, int z) {
         for (int i = 0; i < 16; i++) {
             for (int j = 0; j < 16; j++) {

core/src/main/java/com/volmit/iris/engine/framework/Engine.java

@@ -231,6 +231,9 @@ public interface Engine extends DataProvider, Fallible, LootProvider, BlockUpdat
     @ChunkCoordinates
     IrisJigsawStructure getStructureAt(int x, int z);
 
+    @BlockCoordinates
+    IrisJigsawStructure getStructureAt(int x, int y, int z);
+
     @BlockCoordinates
     default IrisBiome getCaveBiome(int x, int z) {
         return getComplex().getCaveBiomeStream().get(x, z);

core/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java

@@ -29,6 +29,7 @@ import com.volmit.iris.util.mantle.Mantle;
 import com.volmit.iris.util.math.Position2;
 import com.volmit.iris.util.math.RNG;
 import com.volmit.iris.util.matter.slices.container.JigsawPieceContainer;
+import com.volmit.iris.util.matter.slices.container.JigsawStructureContainer;
 import com.volmit.iris.util.matter.slices.container.JigsawStructuresContainer;
 import com.volmit.iris.util.scheduling.J;
 import lombok.Data;
@@ -149,11 +150,13 @@ public class PlannedStructure {
         }
 
         int id = rng.i(0, Integer.MAX_VALUE);
-        JigsawPieceContainer container = JigsawPieceContainer.toContainer(i.getPiece());
+        JigsawPieceContainer piece = JigsawPieceContainer.toContainer(i.getPiece());
+        JigsawStructureContainer structure = JigsawStructureContainer.toContainer(getStructure());
         i.setRealPositions(xx, height, zz, placer);
         return v.place(xx, height, zz, placer, options, rng, (b, data) -> {
             e.set(b.getX(), b.getY(), b.getZ(), v.getLoadKey() + "@" + id);
-            e.set(b.getX(), b.getY(), b.getZ(), container);
+            e.set(b.getX(), b.getY(), b.getZ(), structure);
+            e.set(b.getX(), b.getY(), b.getZ(), piece);
         }, null, getData().getEngine() != null ? getData() : eng.getData()) != -1;
     }
 

core/src/main/java/com/volmit/iris/util/matter/slices/JigsawStructureMatter.java

@@ -0,0 +1,35 @@
+package com.volmit.iris.util.matter.slices;
+
+import com.volmit.iris.util.data.palette.Palette;
+import com.volmit.iris.util.matter.Sliced;
+import com.volmit.iris.util.matter.slices.container.JigsawPieceContainer;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+@Sliced
+public class JigsawStructureMatter extends RawMatter<JigsawPieceContainer> {
+    public JigsawStructureMatter() {
+        this(1,1,1);
+    }
+
+    public JigsawStructureMatter(int width, int height, int depth) {
+        super(width, height, depth, JigsawPieceContainer.class);
+    }
+
+    @Override
+    public Palette<JigsawPieceContainer> getGlobalPalette() {
+        return null;
+    }
+
+    @Override
+    public void writeNode(JigsawPieceContainer b, DataOutputStream dos) throws IOException {
+        dos.writeUTF(b.getLoadKey());
+    }
+
+    @Override
+    public JigsawPieceContainer readNode(DataInputStream din) throws IOException {
+        return new JigsawPieceContainer(din.readUTF());
+    }
+}

core/src/main/java/com/volmit/iris/util/matter/slices/container/JigsawStructureContainer.java

@@ -0,0 +1,13 @@
+package com.volmit.iris.util.matter.slices.container;
+
+import com.volmit.iris.engine.object.IrisJigsawStructure;
+
+public class JigsawStructureContainer extends RegistrantContainer<IrisJigsawStructure> {
+    public JigsawStructureContainer(String loadKey) {
+        super(IrisJigsawStructure.class, loadKey);
+    }
+
+    public static JigsawStructureContainer toContainer(IrisJigsawStructure structure) {
+        return new JigsawStructureContainer(structure.getLoadKey());
+    }
+}