Block skill refines that break a trained power's skill requirement

The old check looked up power requirements by power id instead of rune id,
so it never ran. Refining a skill below a trained power's requirement let
calculatePowers delete the power and its trains.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/net/client/handlers/RefineMsgHandler.java

@@ -88,6 +88,9 @@ public class RefineMsgHandler extends AbstractClientMsgHandler {
     public static boolean refineSkill(ClientConnection origin, PlayerCharacter pc, int token, RefineMsg msg) {
         CharacterSkill skill = null;
         ConcurrentHashMap<String, CharacterSkill> skills = pc.getSkills();
+        int refinedAmount;
+        int requiredAmount;
+
         for (CharacterSkill sk : skills.values()) {
             if (sk == null)
                 continue;
@@ -106,17 +109,16 @@ public class RefineMsgHandler extends AbstractClientMsgHandler {
 
         //TODO verify if any skills have this as prereq
 
-        //TODO verify if any powers have this as a prereq
-        //get all players powers
+        // Dropping below a trained power's skill requirement would make calculatePowers delete the power and its trains
+        refinedAmount = Math.round(skill.getBaseAmountBeforeMods() + skill.calculateAmountAfterTrains(skill.getNumTrains() - 1));
+
         for (CharacterPower power : pc.getPowers().values()) {
-            ArrayList<PowerReq> reqs = PowerReq.getPowerReqsForRune(power.getPowerID());
-            for (PowerReq req : reqs) {
-                ConcurrentHashMap<String, CharacterSkill> playerSkills = pc.getSkills();
-                CharacterSkill playerSkill = playerSkills.get(token);
-                int currentSkillLevel = playerSkill.getTotalSkillPercet();
-                if (token == req.getToken() && req.getLevel() == currentSkillLevel) {
-                    return false;
-                }
+            if (power.getTrains() < 1)
+                continue;
+            requiredAmount = getRequiredSkillAmount(pc, power.getPower().getToken(), token);
+            if (refinedAmount < requiredAmount) {
+                ErrorPopupMsg.sendErrorMsg(pc, "You must refine " + power.getPower().getName() + " to 0 before refining any more from this skill.");
+                return false;
             }
         }
 
@@ -124,6 +126,36 @@ public class RefineMsgHandler extends AbstractClientMsgHandler {
         return skill.refine(pc);
     }
 
+    private static int getRequiredSkillAmount(PlayerCharacter pc, int powerToken, int skillToken) {
+        int requiredAmount = 0;
+
+        if (pc.race != null)
+            requiredAmount = Math.max(requiredAmount, getRequiredSkillAmount(pc.race.getPowersGranted(), powerToken, skillToken));
+        if (pc.baseClass != null)
+            requiredAmount = Math.max(requiredAmount, getRequiredSkillAmount(pc.baseClass.getPowersGranted(), powerToken, skillToken));
+        if (pc.promotionClass != null)
+            requiredAmount = Math.max(requiredAmount, getRequiredSkillAmount(pc.promotionClass.getPowersGranted(), powerToken, skillToken));
+        if (pc.getRunes() != null)
+            for (CharacterRune rune : pc.getRunes())
+                requiredAmount = Math.max(requiredAmount, getRequiredSkillAmount(rune.getPowersGranted(), powerToken, skillToken));
+
+        return requiredAmount;
+    }
+
+    private static int getRequiredSkillAmount(ArrayList<PowerReq> powersGranted, int powerToken, int skillToken) {
+        Byte requiredAmount;
+
+        for (PowerReq powerReq : powersGranted) {
+            if (powerReq.getToken() != powerToken)
+                continue;
+            requiredAmount = powerReq.getSkillReqs().get(skillToken);
+            if (requiredAmount != null)
+                return requiredAmount;
+        }
+
+        return 0;
+    }
+
     public static boolean refinePower(ClientConnection origin, PlayerCharacter pc, int token, RefineMsg msg) {
         CharacterPower power = null;
         ConcurrentHashMap<Integer, CharacterPower> powers = pc.getPowers();

src/engine/objects/CharacterSkill.java

@@ -1136,9 +1136,12 @@ public class CharacterSkill extends AbstractGameObject {
             Logger.error("SkillsBase not found for skill " + this.getObjectUUID());
             this.modifiedAmount = this.baseAmount;
         }
+        return calculateAmountAfterTrains(this.numTrains.get());
+    }
+
+    public float calculateAmountAfterTrains(int trains) {
         int amount;
 
-        int trains = this.numTrains.get();
         if (trains < 10)
             amount = (trains * 2);
         else if (trains < 90)