Tracked Locations on Crafts

modules/Movecraft/src/main/java/net/countercraft/movecraft/async/rotation/RotationTask.java

@@ -21,6 +21,7 @@
 import net.countercraft.movecraft.Movecraft;
 import net.countercraft.movecraft.MovecraftLocation;
 import net.countercraft.movecraft.MovecraftRotation;
+import net.countercraft.movecraft.TrackedLocation;
 import net.countercraft.movecraft.async.AsyncTask;
 import net.countercraft.movecraft.config.Settings;
 import net.countercraft.movecraft.craft.Craft;
@@ -51,6 +52,7 @@
 import org.bukkit.inventory.InventoryView;
 
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.Set;
 
 import static net.countercraft.movecraft.util.MathUtils.withinWorldBorder;
@@ -167,6 +169,12 @@ protected void execute() {
             parentCraft.getFluidLocations().addAll(newFluidList);
         }
 
+        //Rotates the craft's tracked locations.
+        for (Set<TrackedLocation> locations : craft.getTrackedLocations().values()) {
+            for (TrackedLocation location : locations) {
+                location.rotate(rotation, originPoint);
+            }
+        }
 
         updates.add(new CraftRotateCommand(getCraft(),originPoint, rotation));
         //rotate entities in the craft

modules/Movecraft/src/main/java/net/countercraft/movecraft/async/translation/TranslationTask.java

@@ -3,6 +3,7 @@
 import net.countercraft.movecraft.Movecraft;
 import net.countercraft.movecraft.MovecraftChunk;
 import net.countercraft.movecraft.MovecraftLocation;
+import net.countercraft.movecraft.TrackedLocation;
 import net.countercraft.movecraft.async.AsyncTask;
 import net.countercraft.movecraft.config.Settings;
 import net.countercraft.movecraft.craft.ChunkManager;
@@ -58,8 +59,8 @@
 import java.util.Collection;
 import java.util.EnumSet;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.List;
-import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ThreadLocalRandom;

modules/Movecraft/src/main/java/net/countercraft/movecraft/craft/BaseCraft.java

@@ -4,6 +4,7 @@
 import net.countercraft.movecraft.Movecraft;
 import net.countercraft.movecraft.MovecraftLocation;
 import net.countercraft.movecraft.MovecraftRotation;
+import net.countercraft.movecraft.TrackedLocation;
 import net.countercraft.movecraft.async.rotation.RotationTask;
 import net.countercraft.movecraft.async.translation.TranslationTask;
 import net.countercraft.movecraft.config.Settings;
@@ -25,6 +26,7 @@
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
 import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
 import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.block.Sign;
@@ -78,6 +80,7 @@ public abstract class BaseCraft implements Craft {
     private String name = "";
     @NotNull
     private MovecraftLocation lastTranslation = new MovecraftLocation(0, 0, 0);
+    private Map<NamespacedKey, Set<TrackedLocation>> trackedLocations = new HashMap<>();
 
     public BaseCraft(@NotNull CraftType type, @NotNull World world) {
         this.type = type;
@@ -598,4 +601,7 @@ public void setTotalFuel(double fuel) {
     public double getTotalFuel() {
         return totalFuel;
     }
+
+    @Override
+    public Map<NamespacedKey, Set<TrackedLocation>> getTrackedLocations() {return trackedLocations;}
 }

modules/api/src/main/java/net/countercraft/movecraft/TrackedLocation.java

@@ -0,0 +1,69 @@
+package net.countercraft.movecraft;
+
+import net.countercraft.movecraft.craft.Craft;
+import net.countercraft.movecraft.util.MathUtils;
+import org.jetbrains.annotations.NotNull;
+
+public class TrackedLocation {
+    private MovecraftLocation offSet;
+    private final Craft craft;
+
+    /**
+     * Creates a new TrackedLocation instance which tracks a location about a craft's midpoint.
+     * @param craft The craft that's that tied to the location.
+     * @param location The absolute position to track. This location will be stored as a relative
+     *                 location to the craft's central hitbox.
+     */
+    public TrackedLocation(@NotNull Craft craft, @NotNull MovecraftLocation location) {
+        this.craft = craft;
+        MovecraftLocation midPoint = craft.getHitBox().getMidPoint();
+        offSet = new MovecraftLocation(
+                location.getX() - midPoint.getX(),
+                location.getY() - midPoint.getY(),
+                location.getZ() - midPoint.getZ()
+        );
+    }
+
+    /**
+     * Rotates the stored location about any point.
+     * @param rotation A clockwise or counter-clockwise direction to rotate.
+     * @param pivot An absolute position at which to rotate the trackedLocation.
+     */
+    public void rotate(MovecraftRotation rotation, MovecraftLocation pivot) {
+        //This is the position vector relative to the tracked location to the pivot.
+        MovecraftLocation offSetToPivot = new MovecraftLocation(
+                getAbsoluteLocation().getX() - pivot.getX(),
+                getAbsoluteLocation().getY() - pivot.getY(),
+                getAbsoluteLocation().getZ() - pivot.getZ()
+        );
+        //This is the position vector relative to the midpoint to the pivot.
+        MovecraftLocation midPoint = craft.getHitBox().getMidPoint();
+        MovecraftLocation midPointToPivot = new MovecraftLocation(
+                midPoint.getX() - pivot.getX(),
+                midPoint.getY() - pivot.getY(),
+                midPoint.getZ() - pivot.getZ()
+        );
+        //Rotates both vectors
+        MovecraftLocation rotatedOffSetToPivot = MathUtils.rotateVec(rotation, offSetToPivot);
+        MovecraftLocation rotatedMidPointToPivot = MathUtils.rotateVec(rotation, midPointToPivot);
+        //Subtracts rotatedOffSetToPivot - rotatedMidPointToPivot to get the new offset to the midpoint.
+        offSet = new MovecraftLocation(
+                rotatedOffSetToPivot.getX() - rotatedMidPointToPivot.getX(),
+                rotatedOffSetToPivot.getY() - rotatedMidPointToPivot.getY(),
+                rotatedOffSetToPivot.getZ() - rotatedMidPointToPivot.getZ()
+        );
+    }
+
+    /**
+     * Gets the stored location.
+     * @return Returns the location.
+     */
+    public MovecraftLocation getAbsoluteLocation() {
+        MovecraftLocation midPoint = craft.getHitBox().getMidPoint();
+        return new MovecraftLocation(
+                offSet.getX() + midPoint.getX(),
+                offSet.getY() + midPoint.getY(),
+                offSet.getZ() + midPoint.getZ()
+        );
+    }
+}

modules/api/src/main/java/net/countercraft/movecraft/craft/Craft.java

@@ -20,6 +20,7 @@
 import net.countercraft.movecraft.CruiseDirection;
 import net.countercraft.movecraft.MovecraftLocation;
 import net.countercraft.movecraft.MovecraftRotation;
+import net.countercraft.movecraft.TrackedLocation;
 import net.countercraft.movecraft.craft.type.CraftType;
 import net.countercraft.movecraft.processing.MovecraftWorld;
 import net.countercraft.movecraft.util.Counter;
@@ -28,12 +29,11 @@
 import net.kyori.adventure.audience.Audience;
 import org.bukkit.Location;
 import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
 import org.bukkit.World;
 import org.bukkit.block.Sign;
 import org.bukkit.block.data.BlockData;
-import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.Map;
 import java.util.Set;
@@ -263,4 +263,6 @@ default void setLastDZ(int dZ){}
     double getTotalFuel ();
 
     void setTotalFuel (double fuel);
+
+    Map<NamespacedKey, Set<TrackedLocation>> getTrackedLocations();
 }