added max slope variable to Project on Terrain modifier for Proton Sc…

…atter

project/addons/terrain_3d/extras/project_on_terrain3d.gd

@@ -21,6 +21,7 @@
 #
 #@export var terrain_node : NodePath
 #@export var align_with_collision_normal := false
+#@export var max_slope := 90.0
 #
 #var _terrain: Terrain3D
 #
@@ -69,17 +70,29 @@
 	## Get global transform
 	#var gt: Transform3D = domain.get_global_transform()
 	#var gt_inverse := gt.affine_inverse()
+	#var new_transforms_array : Array[Transform3D] = []
 	#for i in transforms.list.size():
-		#var location: Vector3 = (gt * transforms.list[i]).origin
+		#var t: Transform3D = transforms.list[i]
+		#
+		#var location: Vector3 = (gt * t).origin
 		#var height: float = _terrain.data.get_height(location)
 		#var normal: Vector3 = _terrain.data.get_normal(location)
 		#
 		#if align_with_collision_normal and not is_nan(normal.x):
-			#transforms.list[i].basis.y = normal
-			#transforms.list[i].basis.x = -transforms.list[i].basis.z.cross(normal)
-			#transforms.list[i].basis = transforms.list[i].basis.orthonormalized()
-#
-		#transforms.list[i].origin.y = gt.origin.y if is_nan(height) else height - gt.origin.y
+			#t.basis.y = normal
+			#t.basis.x = -t.basis.z.cross(normal)
+			#t.basis = t.basis.orthonormalized()
+#
+		#var remapped_max_slope = remap(max_slope, 0.0, 90.0, 0.0, 1.0)
+		#if abs(Vector3.UP.dot(normal)) >= (1.0 - remapped_max_slope):
+			#t.origin.y = gt.origin.y if is_nan(height) else height - gt.origin.y
+			#new_transforms_array.push_back(t)
+		#else:
+			#pass
+			#
+	#
+	#transforms.list.clear()
+	#transforms.list.append_array(new_transforms_array)
 #
 	#if transforms.is_empty():
 		#warning += """Every point has been removed. Possible reasons include: \n