From c38d9180df3763dbb6b13af45fcc07b8bddc5819 Mon Sep 17 00:00:00 2001
From: Rémi Verschelde <rverschelde@gmail.com>
Date: Thu, 16 May 2019 10:18:48 +0200
Subject: Revert "Revert "Implemented terrain raycast acceleration""

---
 modules/bullet/shape_bullet.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'modules')

diff --git a/modules/bullet/shape_bullet.cpp b/modules/bullet/shape_bullet.cpp
index b590d63167..f15bcec914 100644
--- a/modules/bullet/shape_bullet.cpp
+++ b/modules/bullet/shape_bullet.cpp
@@ -148,7 +148,13 @@ btHeightfieldTerrainShape *ShapeBullet::create_shape_height_field(PoolVector<rea
 	const bool flipQuadEdges = false;
 	const void *heightsPtr = p_heights.read().ptr();
 
-	return bulletnew(btHeightfieldTerrainShape(p_width, p_depth, heightsPtr, ignoredHeightScale, p_min_height, p_max_height, YAxis, PHY_FLOAT, flipQuadEdges));
+	btHeightfieldTerrainShape *heightfield = bulletnew(btHeightfieldTerrainShape(p_width, p_depth, heightsPtr, ignoredHeightScale, p_min_height, p_max_height, YAxis, PHY_FLOAT, flipQuadEdges));
+
+	// The shape can be created without params when you do PhysicsServer.shape_create(PhysicsServer.SHAPE_HEIGHTMAP)
+	if (heightsPtr)
+		heightfield->buildAccelerator(16);
+
+	return heightfield;
 }
 
 btRayShape *ShapeBullet::create_shape_ray(real_t p_length, bool p_slips_on_slope) {
-- 
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