private void GoToState(string stateName, StateChartState from)
{
StateChartState target;
if (stateMap.TryGetValue(stateName, out target))
{
StateChartState ptr = target;
List <StateChartState> stack = new List <StateChartState>();
if (from == target)
{
return;
}
// entering a descendent of currently active state
if (from.isParentOf(target))
{
while (ptr != from)
{
stack.Add(ptr);
ptr = ptr.parent;
}
ptr = stack[0];
stack.RemoveAt(0);
from.ExitChildren();
ptr.Enter(stack);
}
else
{
// root state is always active, no need for a null check
while (!ptr.isActive)
{
stack.Add(ptr);
ptr = ptr.parent;
}
ptr.ExitChildren();
stack.Reverse();
ptr = stack[0];
stack.RemoveAt(0);
ptr.Enter(stack);
}
return;
}
Debug.Log("Unable to go to state: " + stateName);
}
public StateChart(Action <StateChartBuilder> definition)
{
stateMap = new Dictionary <string, StateChartState>();
stateStack = new Stack <StateChartState>();
rootState = new StateChartState("Root", null);
activeEventQueue = new Queue <StateChartEvent>();
inactiveEventQueue = new Queue <StateChartEvent>();
stateMap.Add(rootState.id, rootState);
stateStack.Push(rootState);
definition(new StateChartBuilder(this));
isDefined = true;
stateStack.Pop();
rootState.Enter(null);
stateStack = null;
}
public void Enter(List <StateChartState> enterPath)
{
if (isActive)
{
return;
}
isActive = true;
if (parent != null)
{
parent.activeSubstate = this;
}
if (!isInitialized)
{
isInitialized = true;
if (initFn != null)
{
initFn();
initFn = null;
}
}
if (enterFn != null)
{
enterFn();
}
if (enterPath != null && enterPath.Count > 0)
{
activeSubstate = enterPath[enterPath.Count - 1];
enterPath.RemoveAt(enterPath.Count - 1);
activeSubstate.Enter(enterPath);
}
else if (subStates.Count > 0)
{
activeSubstate = subStates[0];
activeSubstate.Enter(enterPath);
}
else
{
activeSubstate = null;
}
}