feat(Core/Conf): Miss Chance Multiplier (#10873)

src/server/game/Entities/Unit/Unit.cpp

@@ -3009,11 +3009,18 @@ SpellMissInfo Unit::MagicSpellHitResult(Unit* victim, SpellInfo const* spellInfo
         thisLevel = std::max<int32>(thisLevel, spellInfo->SpellLevel);
     int32 levelDiff = int32(victim->getLevelForTarget(this)) - thisLevel;
 
-    int32 MISS_CHANCE_MULTIPLIER = sWorld->getRate(
+    int32 MISS_CHANCE_MULTIPLIER;
+    if (sWorld->getBoolConfig(CONFIG_MISS_CHANCE_MULTIPLIER_ONLY_FOR_PLAYERS) && GetTypeId() != TYPEID_PLAYER) // keep it as it was originally (7 and 11)
+    {
+        MISS_CHANCE_MULTIPLIER = victim->GetTypeId() == TYPEID_PLAYER ? 7 : 11;
+    }
+    else
+    {
+        MISS_CHANCE_MULTIPLIER = sWorld->getRate(
             victim->GetTypeId() == TYPEID_PLAYER
             ? RATE_MISS_CHANCE_MULTIPLIER_TARGET_PLAYER
-            : RATE_MISS_CHANCE_MULTIPLIER_TARGET_CREATURE
+            : RATE_MISS_CHANCE_MULTIPLIER_TARGET_CREATURE);
-    );
+    }
 
     // Base hit chance from attacker and victim levels
     int32 modHitChance = levelDiff < 3

src/server/game/World/IWorld.h

@@ -173,6 +173,7 @@ enum WorldBoolConfigs
     CONFIG_REALM_LOGIN_ENABLED,
     CONFIG_PLAYER_SETTINGS_ENABLED,
     CONFIG_ALLOW_JOIN_BG_AND_LFG,
+    CONFIG_MISS_CHANCE_MULTIPLIER_ONLY_FOR_PLAYERS,
     BOOL_CONFIG_VALUE_COUNT
 };
 

src/server/game/World/World.cpp

@@ -574,6 +574,7 @@ void World::LoadConfigSettings(bool reload)
 
     rate_values[RATE_MISS_CHANCE_MULTIPLIER_TARGET_CREATURE]       = sConfigMgr->GetOption<float>("Rate.MissChanceMultiplier.TargetCreature", 11.0f);
     rate_values[RATE_MISS_CHANCE_MULTIPLIER_TARGET_PLAYER]         = sConfigMgr->GetOption<float>("Rate.MissChanceMultiplier.TargetPlayer", 7.0f);
+    m_bool_configs[CONFIG_MISS_CHANCE_MULTIPLIER_ONLY_FOR_PLAYERS] = sConfigMgr->GetOption<bool>("Rate.MissChanceMultiplier.OnlyAffectsPlayer", false);
 
     rate_values[RATE_TALENT]                               = sConfigMgr->GetOption<float>("Rate.Talent", 1.0f);
     if (rate_values[RATE_TALENT] < 0.0f)

src/server/worldserver/worldserver.conf.dist

@@ -2550,6 +2550,7 @@ Die.Command.Mode = 1
 
 #    Rate.MissChanceMultiplier.Creature
 #    Rate.MissChanceMultiplier.Player
+#    Rate.MissChanceMultiplier.OnlyAffectsPlayer
 #
 #        Description: When the target is 3 or more level higher than the player,
 #                     the chance to hit is determined by the formula: 94 - (levelDiff - 2) * Rate.MissChanceMultiplier
@@ -2557,15 +2558,19 @@ Die.Command.Mode = 1
 #
 #                     Note: this does not affect when the player is less than 3 levels different than the target,
 #                     where this (linear) formula is used instead to calculate the hit chance: 96 - levelDiff.
+#                     You can set Rate.MissChanceMultiplier.OnlyAffectsPlayer to 1 if you only want to affect the MissChance
+#                     for player casters only. This way you won't be affecting creature missing chance.
 #
 #                     Example: if you want the chance to keep growing linearly, use 1.
 #
 #        Default:     Rate.MissChanceMultiplier.TargetCreature = 11
 #                     Rate.MissChanceMultiplier.TargetPlayer = 7
+#                     Rate.MissChanceMultiplier.OnlyAffectsPlayer = 0
 #
 
 Rate.MissChanceMultiplier.TargetCreature = 11
 Rate.MissChanceMultiplier.TargetPlayer = 7
+Rate.MissChanceMultiplier.OnlyAffectsPlayer = 0
 
 #
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