Prevented Self-Crewed Unit Crew from Going on Maternity Leave Mid-Refit, Mid-Repair, or Mid-Mothballing

- Replaced `isActive` check with the new `isBusy` method in maternity leave eligibility logic.
- Added `isBusy` method in `Person` class to determine personnel activity based on status, unit assignments, and tasks.
  - Includes checks for self-crewed units, technicians, unit deployments, and various task states (mothballing, refitting, repairing).

Author: IllianiBird

MekHQ/src/mekhq/campaign/personnel/Person.java

@@ -4423,6 +4423,80 @@ public boolean isMothballing() {
         return isTech() && techUnits.stream().anyMatch(Unit::isMothballing);
     }
 
+    /**
+     * Determines whether this {@code Person} is considered "busy" based on their current status, unit assignment, and
+     * associated tasks.
+     *
+     * <p>This method checks:</p>
+     * <ol>
+     *     <li>If the personnel is active (i.e., has an active {@link PersonnelStatus}).</li>
+     *     <li>Special cases for units that are self-crewed, including activities such as
+     *         mothballing, refitting, or undergoing repairs, during which crew members are
+     *         considered busy.</li>
+     *     <li>If the personnel is a technician, by reviewing their current tech assignments,
+     *         such as units being mothballed, refitted, or repaired.</li>
+     *     <li>If the personnel has a unit assignment and whether that unit is currently deployed.</li>
+     * </li>
+     *
+     * @return {@code true} if the person is deemed busy due to one of the above conditions; {@code false} otherwise.
+     */
+    public boolean isBusy() {
+        // Personnel status
+        if (!status.isActive()) {
+            return false;
+        }
+
+        final boolean hasUnitAssignment = unit != null;
+        final Entity entity = hasUnitAssignment ? unit.getEntity() : null;
+        final boolean isSpecialCase = entity != null && unit.isSelfCrewed();
+
+        // Special case handlers (self crewed units have their tech teams formed as a composite of their crew, so all
+        // crew are considered to be busy during these states)
+        if (isSpecialCase) {
+            if (unit.isMothballing()) {
+                return true;
+            }
+
+            if (unit.isRefitting()) {
+                return true;
+            }
+
+            if (unit.isUnderRepair()) {
+                return true;
+            }
+        }
+
+        // Tech assignments
+        if (isTech()) {
+            for (Unit unit : techUnits) {
+                boolean isActiveTech = Objects.equals(unit.getRefit().getTech(), this);
+
+                if (unit.isMothballing() && isActiveTech) {
+                    return true;
+                }
+
+                if (unit.isRefitting() && isActiveTech) {
+                    return true;
+                }
+
+                if (unit.isUnderRepair()) {
+                    for (Part part : unit.getParts()) {
+                        if (Objects.equals(part.getTech(), this)) {
+                            return true;
+                        }
+                    }
+                }
+            }
+        }
+
+        // Unit assignments
+        if (hasUnitAssignment) {
+            return unit.isDeployed();
+        }
+
+        return false;
+    }
+
     public @Nullable Unit getUnit() {
         return unit;
     }

MekHQ/src/mekhq/campaign/personnel/procreation/AbstractProcreation.java

@@ -335,7 +335,7 @@ public void addPregnancy(final Campaign campaign, final LocalDate today, final P
      * @param isNoReport true if no message should be posted to the daily report
      */
     public void addPregnancy(final Campaign campaign, final LocalDate today, final Person mother, final int size,
-                             boolean isNoReport) {
+          boolean isNoReport) {
         if (size < 1) {
             return;
         }
@@ -506,7 +506,7 @@ public void birth(final Campaign campaign, final LocalDate today, final Person m
      * @param father   the father of the baby, null if unknown
      */
     private static void logAndUpdateFamily(Campaign campaign, LocalDate today, Person mother, Person baby,
-                                           Person father) {
+          Person father) {
         if (campaign.getCampaignOptions().isLogProcreation()) {
             MedicalLogger.deliveredBaby(mother, baby, today);
             if (father != null) {
@@ -537,7 +537,7 @@ private static void logAndUpdateFamily(Campaign campaign, LocalDate today, Perso
      * @return the babies
      */
     public List<Person> birthHistoric(final Campaign campaign, final LocalDate today, final Person mother,
-                                      @Nullable final Person father) {
+          @Nullable final Person father) {
         List<Person> babies = new ArrayList<>();
 
         // Determine the number of children
@@ -668,7 +668,7 @@ public void processNewWeek(final Campaign campaign, final LocalDate today, final
             }
 
             if (campaign.getCampaignOptions().isUseMaternityLeave()) {
-                if (person.getStatus().isActive() && (person.getDueDate().minusWeeks(20).isBefore(today))) {
+                if (!person.isBusy() && (person.getDueDate().minusWeeks(20).isBefore(today))) {
                     person.changeStatus(campaign, today, PersonnelStatus.ON_MATERNITY_LEAVE);
                 }
             }
@@ -690,7 +690,7 @@ public void processNewWeek(final Campaign campaign, final LocalDate today, final
      * @param isNoReport true, if the player shouldn't be informed, otherwise false
      */
     public void processRandomProcreationCheck(final Campaign campaign, final LocalDate today, final Person person,
-                                              boolean isNoReport) {
+          boolean isNoReport) {
         if (randomlyProcreates(today, person)) {
             addPregnancy(campaign, today, person, isNoReport);
         }