working copy and paste functionalities

src/main/java/me/youhavetrouble/blockedit/BEPlayer.java

@@ -39,7 +39,8 @@ public class BEPlayer {
     public void setClipboardFromSelection() {
         if (selection == null) throw new IllegalStateException("Selection is null");
         // add every block between selection points to clipboard
-        clipboard.setBaseLocation(getPlayer().getLocation());
+        clipboard.clear();
+        clipboard.setBaseLocation(getPlayer().getLocation().toBlockLocation());
         for (int x = (int) selection.getMinX(); x <= selection.getMaxX(); x++) {
             for (int y = (int) selection.getMinY(); y <= selection.getMaxY(); y++) {
                 for (int z = (int) selection.getMinZ(); z <= selection.getMaxZ(); z++) {

src/main/java/me/youhavetrouble/blockedit/BlockEdit.java

@@ -28,6 +28,8 @@ public final class BlockEdit extends JavaPlugin {
         registerCommand(new DeselCommand());
         registerCommand(new Pos1Command());
         registerCommand(new Pos2Command());
+        registerCommand(new CopyCommand());
+        registerCommand(new PasteCommand());
 
     }
 

src/main/java/me/youhavetrouble/blockedit/commands/PasteCommand.java

@@ -0,0 +1,46 @@
+package me.youhavetrouble.blockedit.commands;
+
+import me.youhavetrouble.blockedit.BEPlayer;
+import me.youhavetrouble.blockedit.api.BlockEditAPI;
+import me.youhavetrouble.blockedit.operations.PasteOperation;
+import me.youhavetrouble.blockedit.util.Selection;
+import net.kyori.adventure.text.Component;
+import org.bukkit.block.BlockState;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.util.Vector;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashMap;
+
+public class PasteCommand extends Command {
+
+    public PasteCommand() {
+        super("paste");
+        setPermission("blockedit.command.paste");
+    }
+
+    @Override
+    public boolean execute(@NotNull CommandSender sender, @NotNull String s, @NotNull String[] args) {
+
+        if (!(sender instanceof Player player)) {
+            sender.sendMessage(Component.text("You need to be a player to do this"));
+            return true;
+        }
+        BEPlayer bePlayer = BEPlayer.getByPlayer(player);
+        Vector playerLocationVector = player.getLocation().toBlockLocation().toVector();
+
+        HashMap<Vector, BlockState> absoluteBlocks = new HashMap<>(bePlayer.getClipboard().getBlocks().size());
+
+        bePlayer.getClipboard().getBlocks().forEach((vector, blockState) -> {
+            Vector absolutePosition = vector.clone().add(playerLocationVector);
+            absoluteBlocks.put(absolutePosition, blockState);
+        });
+
+        Selection selection = Selection.fromClipboard(absoluteBlocks.keySet(), player.getWorld());
+        BlockEditAPI.runOperation(selection, 1, new PasteOperation(absoluteBlocks));
+
+        return false;
+    }
+}

src/main/java/me/youhavetrouble/blockedit/operations/PasteOperation.java

@@ -0,0 +1,17 @@
+package me.youhavetrouble.blockedit.operations;
+
+import me.youhavetrouble.blockedit.api.BlockEditOperation;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockState;
+import org.bukkit.util.Vector;
+
+import java.util.Map;
+
+public record PasteOperation(Map<Vector, BlockState> blockStateMap) implements BlockEditOperation {
+
+    @Override
+    public void transformBlock(Block block) {
+        if (!blockStateMap.containsKey(block.getLocation().toVector())) return;
+        block.setBlockData(blockStateMap.get(block.getLocation().toVector()).getBlockData());
+    }
+}

src/main/java/me/youhavetrouble/blockedit/util/Clipboard.java

@@ -30,7 +30,7 @@ public class Clipboard {
     }
 
     public void setBaseLocation(Location baseLocation) {
-        this.baseLocation = baseLocation;
+        this.baseLocation = baseLocation.toBlockLocation();
         this.baseLocationVector = baseLocation.toVector();
     }
 
@@ -54,7 +54,7 @@ public class Clipboard {
      * Rotates clipboard by specified degrees around the base location.
      * @param angle angle in degrees
      */
-    public void rotate(int angle) {
+    public void rotate(double angle) {
         for (Map.Entry<Vector, BlockState> entry : this.blocks.entrySet()) {
             Vector relativeLocation = entry.getKey();
             relativeLocation.rotateAroundAxis(baseLocationVector, angle);

src/main/java/me/youhavetrouble/blockedit/util/Selection.java

@@ -4,7 +4,9 @@ import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.util.BoundingBox;
+import org.bukkit.util.Vector;
 
+import java.util.Set;
 import java.util.UUID;
 
 public class Selection extends BoundingBox {
@@ -43,4 +45,23 @@ public class Selection extends BoundingBox {
     public void setWorldUuid(UUID worldUuid) {
         this.worldUuid = worldUuid;
     }
+
+    public static Selection fromClipboard(Set<Vector> locations, World world) {
+        Vector closestVector = new Vector(Double.MAX_VALUE,Double.MAX_VALUE,Double.MAX_VALUE);
+        Vector farthestVector = new Vector(Double.MIN_VALUE,Double.MIN_VALUE,Double.MIN_VALUE);
+
+        for (Vector vector : locations) {
+            if (vector.getX() + vector.getY() + vector.getZ() < closestVector.getX() + closestVector.getY() + closestVector.getZ()) {
+                closestVector = vector;
+            }
+            if (vector.getX() + vector.getY() + vector.getZ() > farthestVector.getX() + farthestVector.getY() + farthestVector.getZ()) {
+                farthestVector = vector;
+            }
+        }
+
+        Location minLocation = closestVector.toLocation(world);
+        Location maxLocation = farthestVector.toLocation(world);
+
+        return new Selection(minLocation, maxLocation, world.getUID());
+    }
 }