From a2fe0ca1e0624c2b7b8b1b0a6f2bef42143c3557 Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwe@kingsome.cn>
Date: Fri, 14 May 2021 17:47:19 +0800
Subject: [PATCH] 1

---
 server/gameserver/car.cc     | 21 +++++++++++++++++++++
 server/gameserver/car.h      |  2 ++
 server/gameserver/metadata.h |  1 +
 3 files changed, 24 insertions(+)

diff --git a/server/gameserver/car.cc b/server/gameserver/car.cc
index a2017b2..924f2b8 100644
--- a/server/gameserver/car.cc
+++ b/server/gameserver/car.cc
@@ -235,6 +235,9 @@ void Car::DecHP(float dec_hp, int killer_id, const std::string& killer_name, int
     #ifdef DEBUG
     dec_hp *= 5;
     #endif
+    if (dec_hp < 0.001f) {
+        return;
+    }
     float old_health = GetHP();
     float new_health = std::max(0.0f, GetHP() - dec_hp);
     ability.hp = std::max(0.0f, new_health);
@@ -242,6 +245,24 @@ void Car::DecHP(float dec_hp, int killer_id, const std::string& killer_name, int
         BeKill(killer_id, killer_name, weapon_id);
     }
     room->frame_event.AddHpChg(GetWeakPtrRef());
+    float hp_rate = GetHP() / GetMaxHP();
+    int new_buff_idx = cur_buff_idx_;
+    while (new_buff_idx < meta->car_buff_list.size()) {
+        if (hp_rate > std::get<0>(meta->car_buff_list[new_buff_idx])) {
+            break;
+        }
+        ++new_buff_idx;
+    }
+    if (new_buff_idx != cur_buff_id_) {
+        if (cur_buff_id_ != 0) {
+            RemoveBuffById(cur_buff_id_);
+        }
+        cur_buff_idx_ = new_buff_idx;
+        cur_buff_id_ = std::get<1>(meta->car_buff_list[cur_buff_idx_]);
+        if (cur_buff_id_ != 0) {
+            MustBeAddBuff(this, cur_buff_id_);
+        }
+    }
 }
 
 void Car::BeKill(int killer_id, const std::string& killer_name, int weapon_id)
diff --git a/server/gameserver/car.h b/server/gameserver/car.h
index 4797048..510c427 100644
--- a/server/gameserver/car.h
+++ b/server/gameserver/car.h
@@ -44,4 +44,6 @@ class Car : public Creature
     bool later_removed_ = false;
     Human* driver_ = nullptr;
     std::set<Human*> passengers_;
+    int cur_buff_id_ = 0;
+    int cur_buff_idx_ = -1;
 };
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index 62bf206..5155f13 100755
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -72,6 +72,7 @@ namespace MetaData
 	float float_param2 = 0;
         std::vector<std::tuple<int, int, int>> power_charge;
         MetaData::Buff* buff_meta = nullptr;
+        std::vector<std::tuple<float, int>> car_buff_list;
 
         void Init();
         int GetWeaponIdx();