private void EnsureInitialised()
{
if (state != DrillTowerState.None)
{
return;
}
// Initial state after eg. game load.
// Infer current operation.
if (pistonGroup.IsExtending)
{
// Probably already drilling. Do start-up checks again.
state = DrillTowerState.Starting;
}
else if (pistonGroup.IsRetracting || pistonGroup.ExtensionPercentage > 0)
{
// Probably retrieving. Do retrieval checks again.
state = DrillTowerState.Retrieving;
}
else
{
// Fallback. Do retrieval checks again, although we're probably already clamped.
state = DrillTowerState.Retrieving;
}
}
public void EmergencyStop()
{
pistonGroup.Stop();
StopRotor();
drillHead.Stop();
TryLockClamps();
state = DrillTowerState.EmergencyStopped;
}
private static string DescribeState(DrillTowerState state)
{
switch (state)
{
case DrillTowerState.None: return("Initialising");
case DrillTowerState.Stopped: return("Idle");
case DrillTowerState.Starting: return("Starting");
case DrillTowerState.Drilling: return("Drilling");
case DrillTowerState.Retrieving: return("Retrieving");
case DrillTowerState.Stopping: return("Stopping");
case DrillTowerState.EmergencyStopped: return("EMERGENCY STOP");
}
return("");
}
/// <summary>
/// Returns true if an operation is in progress and should regularly be updated.
/// </summary>
/// <returns></returns>
public bool Run()
{
EnsureInitialised();
if (!IsDrillViable())
{
EmergencyStop();
return(false);
}
pistonGroup.UpdateState();
drillHead.UpdateState();
clampGroup.UpdateState();
lights.UpdateState();
switch (state)
{
case DrillTowerState.Starting:
if (!clampGroup.IsViable)
{
EmergencyStop();
return(false);
}
// If possible, lock the drill head while we spin up.
pistonGroup.Stop();
TryLockClamps();
if (IsRotorRunning() && drillHead.IsDrilling)
{
// Drill is operating. Prepare to extend.
state = DrillTowerState.Drilling;
}
StartRotor();
drillHead.Start();
return(true);
case DrillTowerState.Drilling:
if (!IsRotorRunning() || !drillHead.IsDrilling)
{
// Should not be in this state.
EmergencyStop();
return(false);
}
if (!TryUnlockClamps())
{
// Unable to release the clamps.
EmergencyStop();
return(false);
}
pistonGroup.Extend();
return(true);
case DrillTowerState.Retrieving:
if (TryLockClamps())
{
pistonGroup.Stop();
state = DrillTowerState.Stopping;
return(true);
}
pistonGroup.Retract();
return(true);
case DrillTowerState.Stopping:
pistonGroup.Stop();
if (!TryLockClamps())
{
return(true);
}
StopRotor();
drillHead.Stop();
if (!IsRotorRunning())
{
state = DrillTowerState.Stopped;
return(true);
}
return(true);
case DrillTowerState.Stopped:
pistonGroup.Stop();
StopRotor();
drillHead.Stop();
return(false);
case DrillTowerState.EmergencyStopped:
default:
EmergencyStop();
return(false);
}
}
public void StopDrilling()
{
state = DrillTowerState.Retrieving;
}
public void StartDrilling()
{
state = DrillTowerState.Starting;
}
