Implement secondary skills in star tower too

src/main/java/emu/nebula/data/resources/SecondarySkillDef.java

@@ -4,10 +4,13 @@ import java.util.ArrayList;
 import java.util.List;
 
 import emu.nebula.data.BaseDef;
+import emu.nebula.data.GameData;
 import emu.nebula.data.ResourceType;
 import emu.nebula.game.inventory.ItemParamMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
+import it.unimi.dsi.fastutil.ints.IntSet;
 import lombok.Getter;
 
 @Getter
@@ -54,8 +57,62 @@ public class SecondarySkillDef extends BaseDef {
         // Clear to save memory
         this.NeedSubNoteSkills = null;
     }
+    
+    // Static sub note skill group group
 
     public static List<SecondarySkillDef> getGroup(int id) {
         return groups.get(id);
     }
+    
+    public static IntSet calculateSecondarySkills(int[] discIds, ItemParamMap subNotes) {
+        var secondarySkills = new IntOpenHashSet();
+        
+        // Get first 3 discs
+        for (int i = 0; i < 3; i++) {
+            // Disc id
+            int discId = discIds[i];
+            
+            // Get disc data
+            var data = GameData.getDiscDataTable().get(discId);
+            if (data == null) continue;
+            
+            // Add secondary skills
+            int s1= getSecondarySkill(subNotes, data.getSecondarySkillGroupId1());
+            if (s1 > 0) {
+                secondarySkills.add(s1);
+            }
+            
+            int s2 = getSecondarySkill(subNotes, data.getSecondarySkillGroupId2());
+            if (s2 > 0) {
+                secondarySkills.add(s2);
+            }
+        }
+        
+        return secondarySkills;
+    }
+    
+    private static int getSecondarySkill(ItemParamMap subNotes, int groupId) {
+        // Check group id
+        if (groupId <= 0) {
+            return 0;
+        }
+        
+        // Get group
+        var group = SecondarySkillDef.getGroup(groupId);
+        if (group == null) {
+            return 0;
+        }
+        
+        // Reverse iterator to try and match highest secondary skill first
+        for (int i = group.size() - 1; i >= 0; i--) {
+            var data = group.get(i);
+            
+            if (data.match(subNotes)) {
+                return data.getId();
+            }
+        }
+        
+        // Failure
+        return 0;
+    }
 }