diff --git a/source/main/CMakeLists.txt b/source/main/CMakeLists.txt
index b5da804879..25fac440eb 100644
--- a/source/main/CMakeLists.txt
+++ b/source/main/CMakeLists.txt
@@ -256,6 +256,7 @@ if (ROR_USE_ANGELSCRIPT)
     list(APPEND SOURCE_FILES
             scripting/GameScript.{h,cpp}
             scripting/LocalStorage.{h,cpp}
+            scripting/FrameStepAngelscript.cpp
             scripting/OgreAngelscript.cpp
             scripting/ImGuiAngelscript.cpp
             scripting/OgreScriptBuilder.{h,cpp}
diff --git a/source/main/gfx/GfxActor.cpp b/source/main/gfx/GfxActor.cpp
index 6ff5c596cb..5692d792fe 100644
--- a/source/main/gfx/GfxActor.cpp
+++ b/source/main/gfx/GfxActor.cpp
@@ -3388,6 +3388,7 @@ void RoR::GfxActor::RunScripts()
     for (ScriptUnit& unit: m_framestep_scripts)
     {
         unit.su_context->Prepare(unit.su_loop_fn);
+        unit.su_context->SetArgObject(0, this);
         unit.su_context->Execute();
     }
 }
diff --git a/source/main/scripting/FrameStepAngelscript.cpp b/source/main/scripting/FrameStepAngelscript.cpp
new file mode 100644
index 0000000000..bf32ccf0a7
--- /dev/null
+++ b/source/main/scripting/FrameStepAngelscript.cpp
@@ -0,0 +1,89 @@
+/*
+    This source file is part of Rigs of Rods
+    Copyright 2005-2012 Pierre-Michel Ricordel
+    Copyright 2007-2012 Thomas Fischer
+    Copyright 2013-2020 Petr Ohlidal
+
+    For more information, see http://www.rigsofrods.org/
+
+    Rigs of Rods is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License version 3, as
+    published by the Free Software Foundation.
+
+    Rigs of Rods is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Rigs of Rods. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ScriptEngine.h"
+
+#include "GfxActor.h"
+
+using namespace RoR;
+using namespace AngelScript;
+
+void RegisterFrameStepInterface(asIScriptEngine* engine)
+{
+    const char* obj = "ActorSimBuffer";
+    engine->RegisterObjectType(obj, 0, asOBJ_REF | asOBJ_NOCOUNT);
+
+    engine->RegisterObjectProperty(obj, "vector3        pos                    ", asOFFSET(GfxActor::SimBuffer, simbuf_pos                    )); //Ogre::Vector3               
+    engine->RegisterObjectProperty(obj, "vector3        node0_velo             ", asOFFSET(GfxActor::SimBuffer, simbuf_node0_velo             )); //Ogre::Vector3               
+    engine->RegisterObjectProperty(obj, "bool           live_local             ", asOFFSET(GfxActor::SimBuffer, simbuf_live_local             )); //bool                        
+    engine->RegisterObjectProperty(obj, "bool           physics_paused         ", asOFFSET(GfxActor::SimBuffer, simbuf_physics_paused         )); //bool                        
+    engine->RegisterObjectProperty(obj, "float          rotation               ", asOFFSET(GfxActor::SimBuffer, simbuf_rotation               )); //float                       
+    engine->RegisterObjectProperty(obj, "float          tyre_pressure          ", asOFFSET(GfxActor::SimBuffer, simbuf_tyre_pressure          )); //float                       
+   // engine->RegisterObjectProperty(obj, "AxisAlignedBox aabb                   ", asOFFSET(GfxActor::SimBuffer, simbuf_aabb                   )); //Ogre::AxisAlignedBox        
+    engine->RegisterObjectProperty(obj, "string         net_username           ", asOFFSET(GfxActor::SimBuffer, simbuf_net_username           )); //std::string                 
+    engine->RegisterObjectProperty(obj, "bool           is_remote              ", asOFFSET(GfxActor::SimBuffer, simbuf_is_remote              )); //bool                        
+    engine->RegisterObjectProperty(obj, "int            gear                   ", asOFFSET(GfxActor::SimBuffer, simbuf_gear                   )); //int                         
+    engine->RegisterObjectProperty(obj, "int            autoshift              ", asOFFSET(GfxActor::SimBuffer, simbuf_autoshift              )); //int                         
+    engine->RegisterObjectProperty(obj, "float          wheel_speed            ", asOFFSET(GfxActor::SimBuffer, simbuf_wheel_speed            )); //float                       
+    engine->RegisterObjectProperty(obj, "float          engine_rpm             ", asOFFSET(GfxActor::SimBuffer, simbuf_engine_rpm             )); //float                       
+    engine->RegisterObjectProperty(obj, "float          engine_crankfactor     ", asOFFSET(GfxActor::SimBuffer, simbuf_engine_crankfactor     )); //float                       
+    engine->RegisterObjectProperty(obj, "float          engine_turbo_psi       ", asOFFSET(GfxActor::SimBuffer, simbuf_engine_turbo_psi       )); //float                       
+    engine->RegisterObjectProperty(obj, "float          engine_accel           ", asOFFSET(GfxActor::SimBuffer, simbuf_engine_accel           )); //float                       
+    engine->RegisterObjectProperty(obj, "float          engine_torque          ", asOFFSET(GfxActor::SimBuffer, simbuf_engine_torque          )); //float                       
+    engine->RegisterObjectProperty(obj, "float          inputshaft_rpm         ", asOFFSET(GfxActor::SimBuffer, simbuf_inputshaft_rpm         )); //float                       
+    engine->RegisterObjectProperty(obj, "float          drive_ratio            ", asOFFSET(GfxActor::SimBuffer, simbuf_drive_ratio            )); //float                       
+    engine->RegisterObjectProperty(obj, "bool           beaconlight_active     ", asOFFSET(GfxActor::SimBuffer, simbuf_beaconlight_active     )); //bool                        
+    engine->RegisterObjectProperty(obj, "float          hydro_dir_state        ", asOFFSET(GfxActor::SimBuffer, simbuf_hydro_dir_state        )); //float                       
+    engine->RegisterObjectProperty(obj, "float          hydro_aileron_state    ", asOFFSET(GfxActor::SimBuffer, simbuf_hydro_aileron_state    )); //float                       
+    engine->RegisterObjectProperty(obj, "float          hydro_elevator_state   ", asOFFSET(GfxActor::SimBuffer, simbuf_hydro_elevator_state   )); //float                       
+    engine->RegisterObjectProperty(obj, "float          hydro_aero_rudder_state", asOFFSET(GfxActor::SimBuffer, simbuf_hydro_aero_rudder_state)); //float                       
+    engine->RegisterObjectProperty(obj, "int            cur_cinecam            ", asOFFSET(GfxActor::SimBuffer, simbuf_cur_cinecam            )); //int                         
+    //engine->RegisterObjectProperty(obj, "std::vector<S  screwprops             ", asOFFSET(GfxActor::SimBuffer, simbuf_screwprops             )); //std::vector<ScrewPropSB>    
+    //engine->RegisterObjectProperty(obj, "std::vector<C  commandkey             ", asOFFSET(GfxActor::SimBuffer, simbuf_commandkey             )); //std::vector<CommandKeySB>   
+    //engine->RegisterObjectProperty(obj, "std::vector<A  aeroengines            ", asOFFSET(GfxActor::SimBuffer, simbuf_aeroengines            )); //std::vector<AeroEngineSB>   
+    //engine->RegisterObjectProperty(obj, "std::vector<A  airbrakes              ", asOFFSET(GfxActor::SimBuffer, simbuf_airbrakes              )); //std::vector<AirbrakeSB>     
+  //  engine->RegisterObjectProperty(obj, "DiffType       diff_type              ", asOFFSET(GfxActor::SimBuffer, simbuf_diff_type              )); //DiffType                    
+    engine->RegisterObjectProperty(obj, "bool           parking_brake          ", asOFFSET(GfxActor::SimBuffer, simbuf_parking_brake          )); //bool                        
+    engine->RegisterObjectProperty(obj, "float          brake                  ", asOFFSET(GfxActor::SimBuffer, simbuf_brake                  )); //float                       
+    engine->RegisterObjectProperty(obj, "float          clutch                 ", asOFFSET(GfxActor::SimBuffer, simbuf_clutch                 )); //float                       
+    engine->RegisterObjectProperty(obj, "int            aero_flap_state        ", asOFFSET(GfxActor::SimBuffer, simbuf_aero_flap_state        )); //int                         
+    engine->RegisterObjectProperty(obj, "int            airbrake_state         ", asOFFSET(GfxActor::SimBuffer, simbuf_airbrake_state         )); //int                         
+    engine->RegisterObjectProperty(obj, "float          wing4_aoa              ", asOFFSET(GfxActor::SimBuffer, simbuf_wing4_aoa              )); //float                       
+    engine->RegisterObjectProperty(obj, "bool           headlight_on           ", asOFFSET(GfxActor::SimBuffer, simbuf_headlight_on           )); //bool                        
+    engine->RegisterObjectProperty(obj, "vector3        direction              ", asOFFSET(GfxActor::SimBuffer, simbuf_direction              )); //Ogre::Vector3               
+    engine->RegisterObjectProperty(obj, "float          top_speed              ", asOFFSET(GfxActor::SimBuffer, simbuf_top_speed              )); //float                       
+      // Autopilot
+    engine->RegisterObjectProperty(obj, "int            ap_heading_mode        ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_heading_mode        )); //int                         
+    engine->RegisterObjectProperty(obj, "int            ap_heading_value       ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_heading_value       )); //int                         
+    engine->RegisterObjectProperty(obj, "int            ap_alt_mode            ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_alt_mode            )); //int                         
+    engine->RegisterObjectProperty(obj, "int            ap_alt_value           ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_alt_value           )); //int                         
+    engine->RegisterObjectProperty(obj, "bool           ap_ias_mode            ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_ias_mode            )); //bool                        
+    engine->RegisterObjectProperty(obj, "int            ap_ias_value           ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_ias_value           )); //int                         
+    engine->RegisterObjectProperty(obj, "bool           ap_gpws_mode           ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_gpws_mode           )); //bool                        
+    engine->RegisterObjectProperty(obj, "bool           ap_ils_available       ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_ils_available       )); //bool                        
+    engine->RegisterObjectProperty(obj, "float          ap_ils_vdev            ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_ils_vdev            )); //float                       
+    engine->RegisterObjectProperty(obj, "float          ap_ils_hdev            ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_ils_hdev            )); //float                       
+    engine->RegisterObjectProperty(obj, "int            ap_vs_value            ", asOFFSET(GfxActor::SimBuffer, simbuf_ap_vs_value            )); //int  
+
+    obj = "GfxActor";
+    engine->RegisterObjectType(obj, 0, asOBJ_REF | asOBJ_NOCOUNT);
+    engine->RegisterObjectMethod(obj, "ActorSimBuffer& GetSimDataBuffer()", asMETHODPR(GfxActor, GetSimDataBuffer, (void), GfxActor::SimBuffer&), asCALL_THISCALL);
+}
diff --git a/source/main/scripting/ScriptEngine.cpp b/source/main/scripting/ScriptEngine.cpp
index 060e55135d..9c22948d2b 100644
--- a/source/main/scripting/ScriptEngine.cpp
+++ b/source/main/scripting/ScriptEngine.cpp
@@ -393,6 +393,7 @@ void ScriptEngine::init()
     m_engine_frame->RegisterGlobalFunction("void log(const string &in)", AngelScript::asFUNCTION(logString), AngelScript::asCALL_CDECL);
     RegisterOgreObjects(m_engine_frame);
     RegisterImGuiBindings(m_engine_frame);
+    RegisterFrameStepInterface(m_engine_frame);
     SLOG("Type registrations done. If you see no error above everything should be working");
 }
 
@@ -755,8 +756,8 @@ bool ScriptEngine::loadActorScript(Actor* actor, RigDef::Script& def)
     if (module->Build() != asSUCCESS)
         return false;
 
-    asIScriptFunction* setup_fn = module->GetFunctionByDecl("int setup(string arg)");
-    asIScriptFunction* loop_fn = module->GetFunctionByDecl("int loop()");
+    asIScriptFunction* setup_fn = module->GetFunctionByDecl("int setup(string)");
+    asIScriptFunction* loop_fn = module->GetFunctionByDecl("int loop(GfxActor@)");
 
     if (!setup_fn || !loop_fn)
         return false;
diff --git a/source/main/scripting/ScriptEngine.h b/source/main/scripting/ScriptEngine.h
index 549c6970e2..939e2ab85c 100644
--- a/source/main/scripting/ScriptEngine.h
+++ b/source/main/scripting/ScriptEngine.h
@@ -198,8 +198,13 @@ class ScriptEngine : public RoRSingletonNoCreation<ScriptEngine>, public Ogre::L
 //    - Ogre::Degree
 //    - Ogre::Quaternion
 //    - Ogre::ColourValue
+// Defined in file 'OgreAngelscript.cpp'
 void RegisterOgreObjects(AngelScript::asIScriptEngine* engine);
 
+// Defined in file 'ImGuiAngelscript.cpp'
 void RegisterImGuiBindings(AngelScript::asIScriptEngine* engine);
 
+// Defined in file 'FrameStepAngelscript.cpp'
+void RegisterFrameStepInterface(AngelScript::asIScriptEngine* engine);
+
 #endif // USE_ANGELSCRIPT