From f912bc172ddf9ef64cba3b25c8d8f9cb75991dd8 Mon Sep 17 00:00:00 2001
From: AzaezelX <quillus@hotmail.com>
Date: Sat, 20 Jun 2026 20:37:05 -0500
Subject: [PATCH] avoid divide by zero when counteracting bouyancy bounce for
 players reported by sir_skurpsalot:
 https://discord.com/channels/358091480004558848/783127087820439582/1518054290524995644

---
 Engine/source/T3D/player.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Engine/source/T3D/player.cpp b/Engine/source/T3D/player.cpp
index ace5a4406..03d651177 100644
--- a/Engine/source/T3D/player.cpp
+++ b/Engine/source/T3D/player.cpp
@@ -2864,7 +2864,10 @@ void Player::updateMove(const Move* move)
    speed_bias = speed_bias + (speed_bias_goal - speed_bias)*0.1f;
    moveSpeed *= speed_bias;
    // Acceleration due to gravity
-   VectorF acc(0.0f, 0.0f, mNetGravity/(1.0 - mBuoyancy) * TickSec);
+   F32 invBuoyancy = (1.0 - mBuoyancy);
+   if (mFabs(invBuoyancy) < POINT_EPSILON)
+      invBuoyancy = POINT_EPSILON;
+   VectorF acc(0.0f, 0.0f, mNetGravity / invBuoyancy * TickSec);
    if (getParent() !=NULL)
       acc = VectorF::Zero;