From 1cc6e36f6039ba7532dfa6e7debe0d040e3ea090 Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwei@kingsome.cn>
Date: Fri, 24 May 2024 11:15:43 +0800
Subject: [PATCH] 1

---
 server/gameserver/buff/callfunc.cc | 61 +++++++++++++++++++++++++++++-
 server/gameserver/trigger.cc       |  4 +-
 2 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/server/gameserver/buff/callfunc.cc b/server/gameserver/buff/callfunc.cc
index b40b09a6..9ebf6c41 100644
--- a/server/gameserver/buff/callfunc.cc
+++ b/server/gameserver/buff/callfunc.cc
@@ -279,6 +279,12 @@ void CallFuncBuff::Activate()
             AddArmorShield();
         }
         break;
+    case BuffCallFunc_e::kBulletDmgCalcProc:
+        {
+            hold_param2_ = meta->GetBuffParam2(this);
+            BulletDmgCalcProc();
+        }
+        break;
     default:
         {
         }
@@ -1924,5 +1930,58 @@ void CallFuncBuff::AddArmorShield()
 
 void CallFuncBuff::BulletDmgCalcProc()
 {
-
+    int target_type = (int)hold_param2_;
+    if (target_type == 0 || target_type == 1) {
+        if (!owner->dead && !owner->downed) {
+            int attr_id = meta->GetBuffParam3(this);
+            float attr_val = meta->GetBuffParam4(this);
+            float cond = meta->GetBuffParam5(this);
+            AttrHandle attr_handle;
+            auto clear_func =
+                [this, target_type, &attr_handle] (Creature* c)
+                {
+                    if (target_type == 0) {
+                        owner->GetAbility()->RemoveAttr(attr_handle);
+                    } else if (target_type == 1) {
+                        c->GetAbility()->RemoveAttr(attr_handle);
+                    }
+                };
+            auto start_handle = owner->GetTrigger()->AddListener
+                (
+                 kBulletDmgStartEvent,
+                 [this, &attr_handle, target_type, attr_id, attr_val, cond, clear_func]
+                 (const a8::Args& args) mutable
+                 {
+                     Creature* target = args.Get<Creature*>(0);
+                     clear_func(target);
+                     if (IsValidHumanAttr(attr_id) ||
+                         IsValidHumanVirtualAttr(attr_id)) {
+                         if (target->GetMaxHP() > 0.0f) {
+                             bool match = target->GetHP() / target->GetMaxHP() < cond;
+                             if (match) {
+                                 if (target_type == 0) {
+                                     attr_handle = owner->GetAbility()->AddAttr(attr_id, attr_val);
+                                 } else if (target_type == 1) {
+                                     attr_handle = target->GetAbility()->AddAttr(attr_id, attr_val);
+                                 }
+                             }
+                         }
+                     }
+                 });
+            auto end_handle = owner->GetTrigger()->AddListener
+                (
+                 kBulletDmgEndEvent,
+                 [this, clear_func] (const a8::Args& args) mutable
+                 {
+                     Creature* target = args.Get<Creature*>(0);
+                     clear_func(target);
+                 });
+         deactivate_cb_ =
+             [this, start_handle, end_handle, clear_func] () mutable
+             {
+                 owner->GetTrigger()->RemoveEventHandler(start_handle);
+                 owner->GetTrigger()->RemoveEventHandler(end_handle);
+             };
+        }
+    }
 }
diff --git a/server/gameserver/trigger.cc b/server/gameserver/trigger.cc
index 3fa7833d..7f0b5e8c 100644
--- a/server/gameserver/trigger.cc
+++ b/server/gameserver/trigger.cc
@@ -726,10 +726,10 @@ void Trigger::BeAttack(int attacker_id)
 
 void Trigger::BulletDmgStart(Creature* target)
 {
-
+    DispatchEvent(kBulletDmgStartEvent, {target});
 }
 
 void Trigger::BulletDmgEnd(Creature* target)
 {
-
+    DispatchEvent(kBulletDmgEndEvent, {target});
 }