feat: Add farmUsingSelection setting and implementation

Author: jayc331

src/api/java/baritone/api/Settings.java

@@ -993,6 +993,11 @@ public final class Settings {
      */
     public final Setting<Boolean> replantNetherWart = new Setting<>(false);
 
+    /**
+     * When enabled, farming will be restricted to the current selection.
+     */
+    public final Setting<Boolean> farmUsingSelection = new Setting<>(false);
+
     /**
      * Farming will scan for at most this many blocks.
      */

src/main/java/baritone/process/FarmProcess.java

@@ -26,6 +26,7 @@
 import baritone.api.process.IFarmProcess;
 import baritone.api.process.PathingCommand;
 import baritone.api.process.PathingCommandType;
+import baritone.api.selection.ISelection;
 import baritone.api.utils.BetterBlockPos;
 import baritone.api.utils.RayTraceUtils;
 import baritone.api.utils.Rotation;
@@ -220,6 +221,12 @@ public PathingCommand onTick(boolean calcFailed, boolean isSafeToCancel) {
         if (locations == null) {
             return new PathingCommand(null, PathingCommandType.REQUEST_PAUSE);
         }
+        if (Baritone.settings().farmUsingSelection.value) {
+            ISelection selection = baritone.getSelectionManager().getLastSelection();
+            if (selection != null) {
+                locations.removeIf(pos -> !selection.aabb().contains(pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5));
+            }
+        }
         List<BlockPos> toBreak = new ArrayList<>();
         List<BlockPos> openFarmland = new ArrayList<>();
         List<BlockPos> bonemealable = new ArrayList<>();