refactor: Clean up code for weapon-linked components

The new implementation iterates over weapons lazily, and combines the
code for both bay and non-bay weapons.

Author: Saklad5

megamek/src/megamek/common/actions/WeaponAttackAction.java

@@ -456,48 +456,41 @@ private static ToHitData toHitCalc(Game game, int attackerId, Targetable target,
                 && (munition.contains(AmmoType.Munitions.M_FOLLOW_THE_LEADER)
                 && !ComputeECM.isAffectedByECM(ae, ae.getPosition(), target.getPosition()));
 
-        Mounted mLinker = weapon.getLinkedBy();
+        Mounted mLinker;
 
-        boolean bApollo = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
-                && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_APOLLO))
-                && (atype != null) && (atype.getAmmoType() == AmmoType.T_MRM);
+        boolean bApollo;
 
-        boolean bArtemisV = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
-                && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_ARTEMIS_V)
-                && !isECMAffected && !bMekTankStealthActive && (atype != null)
-                && (munition.contains(AmmoType.Munitions.M_ARTEMIS_V_CAPABLE)));
+        boolean bArtemisV;
 
-        if (ae.usesWeaponBays()) {
-            for (WeaponMounted bayW : weapon.getBayWeapons()) {
-                Mounted<?> bayWAmmo = bayW.getLinked();
+        (ae.usesWeaponBays() ? weapon.streamBayWeapons() : Stream.of(weapon)).forEach(bayW ->
+            Mounted bayWAmmo = bayW.getLinked();
 
-                if (bayWAmmo == null) {
-                    //At present, all weapons below using mLinker use ammo, so this won't be a problem
-                    continue;
-                }
-                AmmoType bAmmo = (AmmoType) bayWAmmo.getType();
+            if (bayWAmmo == null) {
+                //At present, all weapons below using mLinker use ammo, so this won't be a problem
+                return;
+            }
+            AmmoType bAmmo = (AmmoType) bayWAmmo.getType();
 
-                //If we're using optional rules and firing Arrow Homing missiles from a bay...
-                isHoming = bAmmo != null && bAmmo.getMunitionType().contains(AmmoType.Munitions.M_HOMING);
+            //If we're using optional rules and firing Arrow Homing missiles from a bay...
+            isHoming = bAmmo != null && bAmmo.getMunitionType().contains(AmmoType.Munitions.M_HOMING);
 
-                //If the artillery bay is firing cruise missiles, they have some special rules
-                //It is possible to combine cruise missiles and other artillery in a bay, so
-                //set this to true if any of the weapons are cruise missile launchers.
-                if (bayW.getType().hasFlag(WeaponType.F_CRUISE_MISSILE)) {
-                    isCruiseMissile = true;
-                }
+            //If the artillery bay is firing cruise missiles, they have some special rules
+            //It is possible to combine cruise missiles and other artillery in a bay, so
+            //set this to true if any of the weapons are cruise missile launchers.
+            if (bayW.getType().hasFlag(WeaponType.F_CRUISE_MISSILE)) {
+                isCruiseMissile = true;
+            }
 
-                mLinker = bayW.getLinkedBy();
-                bApollo = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
-                        && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_APOLLO))
-                        && (bAmmo != null) && (bAmmo.getAmmoType() == AmmoType.T_MRM);
+            mLinker = bayW.getLinkedBy();
+            bApollo = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
+                    && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_APOLLO))
+                    && (bAmmo != null) && (bAmmo.getAmmoType() == AmmoType.T_MRM);
 
-                bArtemisV = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
-                        && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_ARTEMIS_V)
-                        && !isECMAffected && !bMekTankStealthActive && (atype != null)
-                        && (bAmmo != null) && (bAmmo.getMunitionType().contains(AmmoType.Munitions.M_ARTEMIS_V_CAPABLE)));
-            }
-        }
+            bArtemisV = ((mLinker != null) && (mLinker.getType() instanceof MiscType) && !mLinker.isDestroyed()
+                    && !mLinker.isMissing() && !mLinker.isBreached() && mLinker.getType().hasFlag(MiscType.F_ARTEMIS_V)
+                    && !isECMAffected && !bMekTankStealthActive && (atype != null)
+                    && (bAmmo != null) && (bAmmo.getMunitionType().contains(AmmoType.Munitions.M_ARTEMIS_V_CAPABLE)));
+        );
 
         boolean inSameBuilding = Compute.isInSameBuilding(game, ae, te);