From 764bb94570fddfa5b6876339d31163d4ef21bc98 Mon Sep 17 00:00:00 2001
From: YUCLing <luotianyi@luotianyi.me>
Date: Tue, 12 Jul 2022 18:33:47 +0800
Subject: [PATCH] fix: stackoverflow when hot-reloading

---
 gamemodes/zombiesurvival/gamemode/obj_entity_extend_sv.lua | 2 +-
 gamemodes/zombiesurvival/gamemode/obj_player_extend.lua    | 2 +-
 gamemodes/zombiesurvival/gamemode/obj_player_extend_cl.lua | 2 +-
 gamemodes/zombiesurvival/gamemode/obj_player_extend_sv.lua | 6 +++---
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/gamemodes/zombiesurvival/gamemode/obj_entity_extend_sv.lua b/gamemodes/zombiesurvival/gamemode/obj_entity_extend_sv.lua
index 501436e..d502d8d 100644
--- a/gamemodes/zombiesurvival/gamemode/obj_entity_extend_sv.lua
+++ b/gamemodes/zombiesurvival/gamemode/obj_entity_extend_sv.lua
@@ -361,7 +361,7 @@ function meta:ResetLastBarricadeAttacker(attacker, dmginfo)
 	end
 end
 
-meta.OldSetPhysicsAttacker = meta.SetPhysicsAttacker
+meta.OldSetPhysicsAttacker = meta.OldSetPhysicsAttacker or meta.SetPhysicsAttacker
 function meta:SetPhysicsAttacker(ent)
 	if string.sub(self:GetClass(), 1, 12) == "func_physbox" and ent:IsValid() then
 		self.PBAttacker = ent
diff --git a/gamemodes/zombiesurvival/gamemode/obj_player_extend.lua b/gamemodes/zombiesurvival/gamemode/obj_player_extend.lua
index eec6fe9..dfbbd4e 100644
--- a/gamemodes/zombiesurvival/gamemode/obj_player_extend.lua
+++ b/gamemodes/zombiesurvival/gamemode/obj_player_extend.lua
@@ -665,7 +665,7 @@ function meta:ShouldNotCollide(ent)
 	return false
 end
 
-meta.OldSetHealth = FindMetaTable("Entity").SetHealth
+meta.OldSetHealth = meta.OldSetHealth or FindMetaTable("Entity").SetHealth
 function meta:SetHealth(health)
 	self:OldSetHealth(health)
 	if P_Team(self) == TEAM_HUMAN and 1 <= health then
diff --git a/gamemodes/zombiesurvival/gamemode/obj_player_extend_cl.lua b/gamemodes/zombiesurvival/gamemode/obj_player_extend_cl.lua
index ce4f644..b32fb0e 100644
--- a/gamemodes/zombiesurvival/gamemode/obj_player_extend_cl.lua
+++ b/gamemodes/zombiesurvival/gamemode/obj_player_extend_cl.lua
@@ -75,7 +75,7 @@ function meta:SetMaxHealth(num)
 	self:SetDTInt(0, math.ceil(num))
 end
 
-meta.OldGetMaxHealth = FindMetaTable("Entity").GetMaxHealth
+meta.OldGetMaxHealth = meta.OldGetMaxHealth or FindMetaTable("Entity").GetMaxHealth
 function meta:GetMaxHealth()
 	return self:GetDTInt(0)
 end
diff --git a/gamemodes/zombiesurvival/gamemode/obj_player_extend_sv.lua b/gamemodes/zombiesurvival/gamemode/obj_player_extend_sv.lua
index 533a1c0..fd75f30 100644
--- a/gamemodes/zombiesurvival/gamemode/obj_player_extend_sv.lua
+++ b/gamemodes/zombiesurvival/gamemode/obj_player_extend_sv.lua
@@ -808,7 +808,7 @@ local function SetModel(pl, mdl)
 	end
 end
 
-meta.OldCreateRagdoll = meta.CreateRagdoll
+meta.OldCreateRagdoll = meta.OldCreateRagdoll or meta.CreateRagdoll
 function meta:CreateRagdoll()
 	local status = self.status_overridemodel
 	if status and status:IsValid() then
@@ -974,7 +974,7 @@ function meta:Resupply(owner, obj)
 end
 
 -- Lets other players know about our maximum health.
-meta.OldSetMaxHealth = FindMetaTable("Entity").SetMaxHealth
+meta.OldSetMaxHealth = meta.OldSetMaxHealth or FindMetaTable("Entity").SetMaxHealth
 function meta:SetMaxHealth(num)
 	num = math.ceil(num)
 	self:SetDTInt(0, num)
@@ -1462,7 +1462,7 @@ function meta:SetLastAttacker(ent)
 	end
 end
 
-meta.OldUnSpectate = meta.UnSpectate
+meta.OldUnSpectate = meta.OldUnSpectate or meta.UnSpectate
 function meta:UnSpectate()
 	if self:GetObserverMode() ~= OBS_MODE_NONE then
 		self:OldUnSpectate(obsm)