From 8498b3fd6d01c72aca6415fdf4c8d00fcfe2adb6 Mon Sep 17 00:00:00 2001
From: Emma Broman <emma95.broman@hotmail.com>
Date: Wed, 18 Nov 2020 13:49:38 +0100
Subject: [PATCH] Add Lua function to ask module if a camera path is running

---
 modules/autonavigation/autonavigationmodule.cpp     |  7 +++++++
 modules/autonavigation/autonavigationmodule_lua.inl | 11 +++++++++++
 2 files changed, 18 insertions(+)

diff --git a/modules/autonavigation/autonavigationmodule.cpp b/modules/autonavigation/autonavigationmodule.cpp
index 41325ea703..e1c648c632 100644
--- a/modules/autonavigation/autonavigationmodule.cpp
+++ b/modules/autonavigation/autonavigationmodule.cpp
@@ -73,6 +73,13 @@ scripting::LuaLibrary AutoNavigationModule::luaLibrary() const {
         absPath("${MODULE_AUTONAVIGATION}/scripts/rendering.lua")
     };
     res.functions = {
+        {
+            "isFlying",
+            &autonavigation::luascriptfunctions::isFlying,
+            {},
+            "",
+            "Returns true if a camera path is currently running, and false otherwise."
+        },
         {
             "continuePath",
             &autonavigation::luascriptfunctions::continuePath,
diff --git a/modules/autonavigation/autonavigationmodule_lua.inl b/modules/autonavigation/autonavigationmodule_lua.inl
index 4c723d6a8f..21594b7cde 100644
--- a/modules/autonavigation/autonavigationmodule_lua.inl
+++ b/modules/autonavigation/autonavigationmodule_lua.inl
@@ -43,6 +43,17 @@ namespace openspace::autonavigation::luascriptfunctions {
 
 const double Epsilon = 1e-12;
 
+int isFlying(lua_State* L) {
+    ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::isFlying");
+
+    AutoNavigationModule* module = global::moduleEngine->module<AutoNavigationModule>();
+    bool hasFinished = module->AutoNavigationHandler().hasFinished();
+
+    ghoul::lua::push(L, !hasFinished);
+    ghoul_assert(lua_gettop(L) == 1, "Incorrect number of items left on stack");
+    return 0;
+}
+
 int continuePath(lua_State* L) {
     ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::continuePath");