// input event requires application of rules to determine next state
void SetNextState(InputEvent input, int?intparam)
{
if (_modelstate == ModelState.Level && !IsValidInGame(input))
{
return;
}
// model state determines what to do with input
switch (_modelstate)
{
case ModelState.Againing:
case ModelState.Level:
ApplyRules(input, intparam);
if (_states.Last().IsAgaining)
{
_modelstate = ModelState.Againing;
if (GameDef.GetSetting(OptionSetting.pause_on_again, false))
{
break;
}
while (_states.Last().IsAgaining)
{
if (Logger.Level >= 3)
{
ShowLevel("againing");
}
ApplyRules(InputEvent.Tick, null);
}
}
CheckNextState();
break;
// message level display ended, now find what's next
case ModelState.Message:
CheckNextState();
break;
case ModelState.EndLevel:
LoadLevel(_levelindex + 1); // sets state directly
break;
case ModelState.Failed:
break;
default:
throw Error.Assert("bad model state {0}", _modelstate);
}
}
void CheckNextState()
{
if (CurrentLevelKind == LevelKind.Message)
{
LoadLevel(_levelindex + 1);
}
else if (!_states.Last().IsFinished)
{
_modelstate = ModelState.Level;
}
else if (GameDef.GetSetting(OptionSetting.pause_at_end_level, false))
{
_modelstate = ModelState.EndLevel;
}
else
{
LoadLevel(_levelindex + 1);
}
}
// apply the result to decide what to do with the new state
// sounds and messages not preserved
void ApplyResult(GameState newstate)
{
var currentstate = _states.Last();
// use the result to decide what to do with the new state
switch (newstate.Result)
{
case StateResult.Cancel:
VerboseLog("Cancel, keep current state");
CheckTrigger(SoundTrigger.Cancel);
if (currentstate.IsAgaining)
{
_states.Remove(currentstate);
}
break; // as if nothing happened
case StateResult.Restart:
VerboseLog("Restart from checkpoint");
CheckTrigger(SoundTrigger.Restart);
Restart(newstate);
break;
case StateResult.Undo:
if (_states.Count > 1)
{
VerboseLog("Undo, discard current state");
CheckTrigger(SoundTrigger.Undo);
_states.Remove(currentstate);
}
else
{
VerboseLog("Undo ignored");
}
break;
case StateResult.Reset:
VerboseLog("Reset, reload level");
LoadLevel(_levelindex);
break;
case StateResult.Againing:
if (currentstate.IsAgaining)
{
_states.Remove(currentstate);
}
newstate.AgainCount = currentstate.AgainCount + 1;
if (newstate.AgainCount >= 100)
{
throw Error.Fatal("too many agains");
}
VerboseLog("Run rules again on current state");
CheckTrigger(SoundTrigger.Again);
Logger.WriteLine(2, "Again count {0}", newstate.AgainCount);
_states.Add(newstate);
break;
case StateResult.Finished:
case StateResult.Success:
if (currentstate.IsAgaining || _initialinput)
{
_states.Remove(currentstate);
}
// treat this combo as a cancel
if (_playermovement &&
GameDef.GetSetting(OptionSetting.require_player_movement, false) &&
newstate.PlayerIndexes.SequenceEqual(currentstate.PlayerIndexes))
{
VerboseLog("Player did not move, discard current state");
CheckTrigger(SoundTrigger.Cancel);
}
else
{
VerboseLog("Move complete");
_states.Add(newstate);
if (newstate.Result == StateResult.Finished)
{
VerboseLog("Level complete");
CheckTrigger(SoundTrigger.Win);
}
}
break;
default:
throw Error.Assert("bad result {0}", newstate.Result);
}
}
// get a puzzle object id given name
public int GetObjectId(string name)
{
return(Enumerable.Range(1, GameDef.ObjectCount)
.FirstOrDefault(x => GameDef.GetObject(x).Name
.Equals(name, StringComparison.InvariantCultureIgnoreCase))); // 0 if not found
}
// get a puzzle object, which may have been updated
public PuzzleObject GetObject(int objid)
{
var obj = _states.Last().PuzzleObjects.SafeLookup(objid);
return(obj ?? GameDef.GetObject(objid));
}