Simulation.cpp

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#include "Simulation.hpp"
#include "../Defs.hpp"
 
namespace comp
{
 
Simulation::Simulation( iv::Instance * inst, SimulationState * sim, iv::TimeId time_id ) :
    iv::FixedUpdateClient( inst, time_id ),
    cm( inst, this, "Simulation" ),
    sim( sim ),
    on_restart( inst, [ this ]()
    {
        this->cm.log( SRC_INFO, Defs::Log::Simulation, "Game state change: ", this->sim->state.Get(), " -> ", SimulationState::Running, "." );
        this->sim->state.Modify( &this->cm, SimulationState::Running );
        
        this->needs_reset = true;
        this->fixed_update_resume();
    }),
    on_end( inst, [ this ]()
    {
        if( this->sim->state.Get() != SimulationState::Empty )
        {
            this->cm.log( SRC_INFO, Defs::Log::Simulation, "Game state change: ", this->sim->state.Get(), " -> ", SimulationState::Ended, "." );
            this->sim->state.Modify( &this->cm, SimulationState::Ended );
            
            this->needs_reset = true;
            this->fixed_update_pause();
        }
    }),
    on_pause( inst, [ this ]( bool real )
    {
        if( this->on_pause.Get() )
        { // pause
            if( this->sim->state.Get() == SimulationState::Running )
            {
                this->cm.log( SRC_INFO, Defs::Log::Simulation, "Game state change: ", this->sim->state.Get(), " -> ", SimulationState::Paused, "." );
                this->sim->state.Modify( &this->cm, SimulationState::Paused );
                
                this->fixed_update_pause();
            }
        }
        else
        { // unpause
            if( this->sim->state.Get() == SimulationState::Paused )
            {
                this->cm.log( SRC_INFO, Defs::Log::Simulation, "Game state change: ", this->sim->state.Get(), " -> ", SimulationState::Running, "." );
                this->sim->state.Modify( &this->cm, SimulationState::Running );
                
                this->fixed_update_resume();
            }
        }
    }),
    needs_reset( true )
{
    this->cm.inherits( this->iv::FixedUpdateClient::cm );
    this->cm.owns( this->on_restart.cm, this->on_end.cm, this->on_pause.cm );
    
    this->fixed_update_pause();
    
    this->on_restart.Assign_Attribute_R( &sim->restart );
    this->on_end.Assign_Attribute_R( &sim->end );
    this->on_pause.Assign_Attribute_R( &sim->pause );
}
 
void Simulation::fixed_update( iv::TimeId time, int time_step, int steps )
{
    if( this->needs_reset )
    {
        this->needs_reset = false;
        this->sim->time_ms.Modify( &this->cm, 0 );
        this->simulation_reset();
    }
    
    for( size_t i = 0; i < steps; i++ )
    {
        //
        this->simulation_step( time_step );
        
        //
        this->sim->time_ms.Modify( &this->cm, this->sim->time_ms.Get() + time_step );
    }
}
 
}