void Update()
{
if (plan.Count == 0 && nextAction == null) // Player doesn't have a plan so it must replan
{
MakePlan();
// Displaying the new plan if there is a new plan (when all goals are achieved the plan will be empty)
if (plan.Count != 0) planDisplay.GetComponent<Plan>().DisplayPlan(new List<AbstractAction>(plan));
}
else if (nextAction == null) // Previous action is done, so player moves on to next action
{
nextAction = plan.Dequeue();
}
else // Player is working on finishing the action stored in nextAction
{
if (!nextAction.IsInRange(this.transform)) // Player must be in range of trader/caravan to do action
{
player.MoveTowards(nextAction.GetActionObject());
}
else if (timeStamp == -1) // Player has to stay by trader/caravan 0.5s to do action, so we must track time
{
timeStamp = Time.time;
}
else if (Time.time - timeStamp >= 0.5) // Player has stayed by trader/caravan 0.5s, so action can be executed
{
if (!nextAction.PreConditionsSatisfied(player.GetInventory())) // Something has changed since plan was made, action can't be done
{
planDisplay.GetComponent<Plan>().DisplayMessage("Plan failed, replanning");
plan = new Queue<AbstractAction>(); // We empty plan so planner can replan with new world state
nextAction = null;
}
else // Action can be executed
{
(int[],int[]) updatedState = nextAction.DoAction(player.GetInventory());
player.ChangeInventory(updatedState.Item1); // Updating inventory
caravan.UpdateSpices(updatedState.Item2); // Updating caravan
nextAction = null; // Action has been executed, so nextAction is cleared
timeStamp = -1; // Time counter is reset
}
}
}
}