internal LeafTaskBuilder(LeafTaskDescWrapper task)
: base(task)
{
}
private void OnCreateTaskCommand(CreateTaskCommand command)
{
var parent = Repository.States[command.Id];
var parentTaskId = 0u;
if (parent is BehaviorTreeState)
{
var tree = (BehaviorTreeState)parent;
if (tree.RootTaskId > 0)
{
parent.ApplyEvent(new TaskNotCreatedEvent(command.Id)
{
Reason = "Behavior tree already has root task"
});
return;
}
}
else if (parent is TaskState)
{
var task = (TaskState)parent;
if (task.Desc is LeafTaskDescWrapper)
{
parent.ApplyEvent(new TaskNotCreatedEvent(command.Id)
{
Reason = "Leaf task cannot have child task"
});
return;
}
else if (task.Desc is DecoratorTaskDescWrapper)
{
var desc = (DecoratorTaskDescWrapper)task.Desc;
if (desc.ChildTaskId != 0)
{
parent.ApplyEvent(new TaskNotCreatedEvent(command.Id)
{
Reason = "Decorator task can only has one child task"
});
return;
}
}
parentTaskId = task.Desc.Id;
}
else
{
throw new NotSupportedException(command.Id);
}
{
var tree = (BehaviorTreeState)Repository.States[BehaviorTreeState.GetId()];
TaskDescWrapper taskDescWrapper;
if (typeof(ILeafTaskDesc).IsAssignableFrom(command.TaskType))
{
taskDescWrapper = new LeafTaskDescWrapper();
}
else if (typeof(IDecoratorTaskDesc).IsAssignableFrom(command.TaskType))
{
taskDescWrapper = new DecoratorTaskDescWrapper();
}
else if (typeof(ICompositeTaskDesc).IsAssignableFrom(command.TaskType))
{
taskDescWrapper = new CompositeTaskDescWrapper();
}
else
{
throw new NotSupportedException(command.TaskType.ToString());
}
taskDescWrapper.Id = tree.NextTaskId;
taskDescWrapper.CustomDesc = (ITaskDesc)Activator.CreateInstance(command.TaskType);
var taskState = new TaskState(Domain, TaskState.GetId(tree.NextTaskId));
taskState.ParentTaskId = parentTaskId;
taskState.Desc = taskDescWrapper;
parent.ApplyEvent(new TaskCreatedEvent(command.Id)
{
NewTask = taskState
});
}
}