Implement OilOfSharpness

Assets/Battle/BuffManager.cs

@@ -0,0 +1,64 @@
+using System.Collections.Generic;
+using System.Linq;
+
+public class Buff {
+    private BuffType mType;
+    private int mAmount;
+    private BattleTime mEnd;
+
+    public Buff(BuffType type, int amount, BattleTime end) {
+        mType = type;
+        mAmount = amount;
+        mEnd = end;
+    }
+
+    public BuffType Type {get => mType;}
+    public int Amount {get => mAmount;}
+    public BattleTime End {get => mEnd;}
+}
+
+public class BuffManager {
+
+    private Dictionary<BattleParticipant, List<Buff>> mBuffs = new Dictionary<BattleParticipant, List<Buff>>();
+
+    public BuffManager(BattleClock clock) {
+        clock.OnTimeChanged += NotifyBattleTime;
+    }
+    
+    public void AddBuff(BuffParticipantEffect effect, BattleTime timeNow) {
+        List<Buff> current = GetAllBuffsFor(effect.Participant);
+        current.Add(new Buff(effect.Type, effect.Amount, CalculateEnd(timeNow, effect.Duration)));
+        mBuffs[effect.Participant] = current;
+    }
+
+    public int GetTotalBuffAmountOfType(BattleParticipant participant, BuffType type) {
+        int total = 0;
+        foreach (Buff buff in GetAllBuffsFor(participant)) {
+            if (buff.Type == type) {
+                total += buff.Amount;
+            }
+        }
+        return total;
+    }
+
+    public List<Buff> GetAllBuffsFor(BattleParticipant participant) {
+        if (mBuffs.ContainsKey(participant)) {
+            return mBuffs[participant];
+        } else {
+            return new List<Buff>();
+        }
+    }
+
+    private void NotifyBattleTime(BattleTime timeNow) {
+        foreach (List<Buff> buffs in mBuffs.Values) {
+            buffs.RemoveAll(buff => timeNow.Int >= buff.End.Int);
+        }
+    }
+
+    private static BattleTime CalculateEnd(BattleTime timeNow, BuffDuration duration) {
+        if (duration == BuffDuration.UntilEndOfNextHeroTurn) {
+            return new BattleTime(timeNow.RoundNumber + 1, RoundStep.EndOfHeroTurn);
+        }
+        throw new System.Exception();
+    }
+}