move some stuff around (without changes) in Simulation.cpp, add sim.u…

…pdateParticles function

src/gui/game/GameController.cpp

@@ -882,7 +882,7 @@ void GameController::Update()
 		gameView->SetSample(gameModel->GetSimulation()->GetSample(pos.X, pos.Y));
 
 	Simulation * sim = gameModel->GetSimulation();
-	sim->update_particles();
+	sim->Update();
 
 	//if either STKM or STK2 isn't out, reset it's selected element. Defaults to PT_DUST unless right selected is something else
 	//This won't run if the stickmen dies in a frame, since it respawns instantly

src/lua/LuaScriptInterface.cpp

@@ -592,6 +592,7 @@ void LuaScriptInterface::initSimulationAPI()
 		{"photons", simulation_photons},
 		{"neighbours", simulation_neighbours},
 		{"neighbors", simulation_neighbours},
+		{"updateParticles", simulation_update_particles},
 		{NULL, NULL}
 	};
 	luaL_register(l, "simulation", simulationAPIMethods);
@@ -1780,6 +1781,16 @@ int LuaScriptInterface::simulation_neighbours(lua_State * l)
 	return 1;
 }
 
+int LuaScriptInterface::simulation_update_particles(lua_State * l)
+{
+	int start = luaL_optint(l, 1, 0);
+	int end  = luaL_optint(l, 2, luacon_sim->parts_lastActiveIndex);
+	if (start < 0 || end >= NPART || start > end)
+		return luaL_error(l, "Invalid start / end positions: (%i, %i)", start, end);
+	luacon_sim->UpdateParticles(start, end);
+	return 0;
+}
+
 //// Begin Renderer API
 
 void LuaScriptInterface::initRendererAPI()

src/lua/LuaScriptInterface.h

@@ -99,6 +99,7 @@ class LuaScriptInterface: public CommandInterface
 	static int simulation_pmap(lua_State * l);
 	static int simulation_photons(lua_State * l);
 	static int simulation_neighbours(lua_State * l);
+	static int simulation_update_particles(lua_State * l);
 
 	//Renderer
 	void initRendererAPI();