From a918c61de80c223de1f05af6e7a535597ba5cb87 Mon Sep 17 00:00:00 2001
From: furo <urof@disroot.org>
Date: Fri, 29 Dec 2023 22:39:42 +0100
Subject: [PATCH] Fix players on 0.7 becoming invisible when `m_HookTick` is
 negative.

---
 src/game/server/entities/character.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/game/server/entities/character.cpp b/src/game/server/entities/character.cpp
index 1c0c5a1ae..ad405eb28 100644
--- a/src/game/server/entities/character.cpp
+++ b/src/game/server/entities/character.cpp
@@ -1099,6 +1099,10 @@ void CCharacter::SnapCharacter(int SnappingClient, int ID)
 			pCharacter->m_Angle -= (int)(2.0f * pi * 256.0f);
 		}
 
+		// m_HookTick can be negative when using the hook_duration tune, which 0.7 clients
+		// will consider invalid. https://github.com/ddnet/ddnet/issues/3915
+		pCharacter->m_HookTick = maximum(0, pCharacter->m_HookTick);
+
 		pCharacter->m_Tick = Tick;
 		pCharacter->m_Emote = Emote;
 		pCharacter->m_AttackTick = m_AttackTick;