From 7957a7bd2e6188ce7fcb3172587970cb7aa4315d Mon Sep 17 00:00:00 2001
From: Andrea Catania <info@andreacatania.com>
Date: Wed, 29 Aug 2018 17:34:26 +0200
Subject: [PATCH] Fixed crash if convex has 0 vertices

(cherry picked from commit 9a67a07a2c339fa4e847b28160093f02ceb64eaf)
---
 modules/bullet/shape_bullet.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/bullet/shape_bullet.cpp b/modules/bullet/shape_bullet.cpp
index 08171a6902d..16c4ffc95d0 100644
--- a/modules/bullet/shape_bullet.cpp
+++ b/modules/bullet/shape_bullet.cpp
@@ -291,6 +291,9 @@ void ConvexPolygonShapeBullet::setup(const Vector<Vector3> &p_vertices) {
 }
 
 btCollisionShape *ConvexPolygonShapeBullet::create_bt_shape(const btVector3 &p_implicit_scale, real_t p_margin) {
+	if (!vertices.size())
+		// This is necessary since 0 vertices
+		return prepare(ShapeBullet::create_shape_empty());
 	btCollisionShape *cs(ShapeBullet::create_shape_convex(vertices));
 	cs->setLocalScaling(p_implicit_scale);
 	prepare(cs);