Regular API function

Description	Retrieves current simulation state. See also the simulation state diagram.
C synopsis	simInt simGetSimulationState()
C parameters	None
C return value	The current state of the simulation (sim_simulation_stopped, sim_simulation_paused, etc. (see the simulation state values)), or -1 in case of an error
Lua synopsis	number simulationState=sim.getSimulationState()
Lua parameters	Same as C-function
Lua return values	Same as C-function