From 83da95b6e4d6261ce81fd35fd6fe45ce5cba06eb Mon Sep 17 00:00:00 2001
From: Marcel Admiraal <madmiraal@users.noreply.github.com>
Date: Tue, 6 Apr 2021 19:43:51 +0100
Subject: [PATCH] Check for empty ConcavePolygonShape2D before checking for
 intersection

---
 servers/physics_2d/shape_2d_sw.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/servers/physics_2d/shape_2d_sw.cpp b/servers/physics_2d/shape_2d_sw.cpp
index e4f754561ef..cf5bff00601 100644
--- a/servers/physics_2d/shape_2d_sw.cpp
+++ b/servers/physics_2d/shape_2d_sw.cpp
@@ -743,6 +743,9 @@ bool ConcavePolygonShape2DSW::contains_point(const Vector2 &p_point) const {
 
 bool ConcavePolygonShape2DSW::intersect_segment(const Vector2 &p_begin, const Vector2 &p_end, Vector2 &r_point, Vector2 &r_normal) const {
 
+	if (segments.size() == 0 || points.size() == 0)
+		return false;
+
 	uint32_t *stack = (uint32_t *)alloca(sizeof(int) * bvh_depth);
 
 	enum {