From cf98e049b01604f527e23fb8ddfbe12b31237c39 Mon Sep 17 00:00:00 2001
From: hiker <henrichsjoerg@gmail.com>
Date: Tue, 29 Aug 2017 08:23:06 +1000
Subject: [PATCH] Fixed sliding (i.e. not being able to drive up steep uphill
sections). Fixes #2906.
---
src/karts/kart.cpp | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/karts/kart.cpp b/src/karts/kart.cpp
index 3d9e8c684..6379915c9 100644
--- a/src/karts/kart.cpp
+++ b/src/karts/kart.cpp
@@ -2509,13 +2509,18 @@ void Kart::updateSliding()
// Now test for each wheel if it should be sliding
// -----------------------------------------------
bool enable_sliding = false;
+
+ // We need the 'up' vector, which can be affected by material
+ // with gravity. So use the body's gravity to determine up:
+ Vec3 up = -m_body->getGravity();
+ up.normalize();
for (int i = 0; i < m_vehicle->getNumWheels(); i++)
{
const btWheelInfo &wheel = m_vehicle->getWheelInfo(i);
if (!wheel.m_raycastInfo.m_isInContact) continue;
const btVector3 &norm = m_vehicle->getWheelInfo(i).m_raycastInfo.m_contactNormalWS;
- float distanceFromUp = norm.dot(getNormal());
+ float distanceFromUp = norm.dot(up);
float friction;
if (distanceFromUp < 0.85f)
{