Implement GolemFist

Assets/Battle/BattleController.cs

@@ -333,4 +333,5 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
 
     // MonsterViewpoint
     public BattleHero[] Heroes {get => this.heroes;}
+    public BattleMonster[] Monsters {get => this.monsters;}
 }

Assets/Battle/BattleParticipant.cs

@@ -31,6 +31,10 @@ public class BattleParticipant
         return this.maxHP;
     }
 
+    public bool IsAlive() {
+        return this.hp > 0;
+    }
+
     public int DealDamage(int damage) {
         int blockedDamage = Math.Min(damage, this.block);
         if (blockedDamage > 0) {
@@ -43,6 +47,10 @@ public class BattleParticipant
     }
 
     public int Heal(int amount) {
+        if (!IsAlive()) {
+            return 0;
+        }
+
         amount = Math.Min(this.maxHP - this.hp, amount);
         this.hp += amount;
         return amount;

Assets/Battle/CardsMonsters/GolemFistMCard.cs

@@ -0,0 +1,18 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GolemFistMCard : MonsterCard
+{
+    public GolemFistMCard(BattleParticipant owner)
+        : base(owner, MCardId.GolemFist, "Golem Fist", 2, CardType.Attack,
+            "Deals 3 damage to target. Target: nearest hero.") {
+    }
+
+    public override IEnumerator Use(IBattleEffectApplier effectApplier, MonsterViewpoint monsterViewpoint) {
+        BattleParticipant target = AIUtils.GetNearestHero(monsterViewpoint, this.owner);
+        DealDamageEffect damageEffect = new DealDamageEffect(target, 3);
+        effectApplier.Apply(damageEffect);
+        yield break;
+    }
+}

Assets/Battle/CardsMonsters/GolemFistMCard.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f42a2de2b37632b489b9f6aebbf55b54
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Battle/CardsMonsters/VampireFangsMCard.cs

@@ -5,12 +5,12 @@ using UnityEngine;
 public class VampireFangsMCard : MonsterCard
 {
     public VampireFangsMCard(BattleParticipant owner)
-        : base(owner, MCardId.VampireFangs, "VampireFangs", 2, CardType.Attack,
+        : base(owner, MCardId.VampireFangs, "Vampire Fangs", 2, CardType.Attack,
             "Steals 2 HP from target. Target: highest HP hero.") {
     }
 
     public override IEnumerator Use(IBattleEffectApplier effectApplier, MonsterViewpoint monsterViewpoint) {
-        BattleParticipant target = DetermineTarget(monsterViewpoint);
+        BattleParticipant target = AIUtils.GetHeroWithHighestHP(monsterViewpoint);
         DealDamageEffect damageEffect = new DealDamageEffect(target, 2);
         effectApplier.Apply(damageEffect);
         if (damageEffect.AmountDealt > 0) {
@@ -19,21 +19,4 @@ public class VampireFangsMCard : MonsterCard
         }
         yield break;
     }
-
-    private BattleParticipant DetermineTarget(MonsterViewpoint monsterViewpoint) {
-        return GetHeroWithHighestHP(monsterViewpoint);
-    }
-    
-    private BattleHero GetHeroWithHighestHP(MonsterViewpoint monsterViewpoint) {
-        int highestHPHeroIndex = -1;
-        int highestHP = -1;
-        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
-            int heroHP = monsterViewpoint.Heroes[i].GetHP();
-            if (heroHP > highestHP) {
-                highestHPHeroIndex = i;
-                highestHP = heroHP;
-            }
-        }
-        return monsterViewpoint.Heroes[highestHPHeroIndex];
-    }
 }

Assets/Battle/MonsterAI.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: ea3ae8263c16c404e8dc33782de382a9
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Battle/MonsterAI/AIUtils.cs

@@ -0,0 +1,43 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class AIUtils {
+    public static BattleHero GetNearestHero(MonsterViewpoint monsterViewpoint,
+            BattleParticipant owner) {
+        int ownerPosition = GetMonsterPosition(monsterViewpoint, owner);
+
+        int nearestHeroIndex = -1;
+        int nearestDistance = int.MaxValue;
+        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
+            if (!monsterViewpoint.Heroes[i].IsAlive()) continue;
+            int distance = System.Math.Abs(i - ownerPosition);
+            if (distance < nearestDistance) {
+                nearestHeroIndex = i;
+                nearestDistance = distance;
+            }
+        }
+        return monsterViewpoint.Heroes[nearestHeroIndex];
+    }
+
+    public static int GetMonsterPosition(MonsterViewpoint monsterViewpoint, BattleParticipant monster) {
+        for (int i = 0; i < monsterViewpoint.Monsters.Length; i++) {
+            if (monsterViewpoint.Monsters[i] == monster) return i;
+        }
+        return -1;
+    }
+
+    public static BattleHero GetHeroWithHighestHP(MonsterViewpoint monsterViewpoint) {
+        int highestHPHeroIndex = -1;
+        int highestHP = -1;
+        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
+            if (!monsterViewpoint.Heroes[i].IsAlive()) continue;
+            int heroHP = monsterViewpoint.Heroes[i].GetHP();
+            if (heroHP > highestHP) {
+                highestHPHeroIndex = i;
+                highestHP = heroHP;
+            }
+        }
+        return monsterViewpoint.Heroes[highestHPHeroIndex];
+    }
+}

Assets/Battle/MonsterAI/AIUtils.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 69cce7f2fac935f429b1a72da0b465bd
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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Assets/Battle/MonsterAI/MonsterViewpoint.cs

@@ -4,4 +4,5 @@ using UnityEngine;
 
 public interface MonsterViewpoint {
     BattleHero[] Heroes {get;}
+    BattleMonster[] Monsters {get;}
 }

Assets/Battle/MonsterCardDatabase.cs

@@ -4,6 +4,7 @@ using UnityEngine;
 
 public enum MCardId {
     VampireFangs,
+    GolemFist,
 }
 
 public class MonsterCardDatabase : CardDatabase<MonsterCard>
@@ -14,6 +15,8 @@ public class MonsterCardDatabase : CardDatabase<MonsterCard>
         {
             case MCardId.VampireFangs:
                 return new VampireFangsMCard(owner);
+            case MCardId.GolemFist:
+                return new GolemFistMCard(owner);
             default:
                 throw new System.ArgumentException("MCardId unknown", "id");
         }