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CrowdControl/Assets/Feel/MMTools/Tools/MMAI/AIState.cs

131 lines
3.0 KiB
C#

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
namespace MoreMountains.Tools
{
[System.Serializable]
public class AIActionsList : MMReorderableArray<AIAction>
{
}
[System.Serializable]
public class AITransitionsList : MMReorderableArray<AITransition>
{
}
/// <summary>
/// A State is a combination of one or more actions, and one or more transitions. An example of a state could be "_patrolling until an enemy gets in range_".
/// </summary>
[System.Serializable]
public class AIState
{
/// the name of the state (will be used as a reference in Transitions
public string StateName;
[MMReorderableAttribute(null, "Action", null)]
public AIActionsList Actions;
[MMReorderableAttribute(null, "Transition", null)]
public AITransitionsList Transitions;/*
/// a list of actions to perform in this state
public List<AIAction> Actions;
/// a list of transitions to evaluate to exit this state
public List<AITransition> Transitions;*/
protected AIBrain _brain;
/// <summary>
/// Sets this state's brain to the one specified in parameters
/// </summary>
/// <param name="brain"></param>
public virtual void SetBrain(AIBrain brain)
{
_brain = brain;
}
/// <summary>
/// On enter state we pass that info to our actions and decisions
/// </summary>
public virtual void EnterState()
{
foreach (AIAction action in Actions)
{
action.OnEnterState();
}
foreach (AITransition transition in Transitions)
{
if (transition.Decision != null)
{
transition.Decision.OnEnterState();
}
}
}
/// <summary>
/// On exit state we pass that info to our actions and decisions
/// </summary>
public virtual void ExitState()
{
foreach (AIAction action in Actions)
{
action.OnExitState();
}
foreach (AITransition transition in Transitions)
{
if (transition.Decision != null)
{
transition.Decision.OnExitState();
}
}
}
/// <summary>
/// Performs this state's actions
/// </summary>
public virtual void PerformActions()
{
if (Actions.Count == 0) { return; }
for (int i=0; i<Actions.Count; i++)
{
if (Actions[i] != null)
{
Actions[i].PerformAction();
}
else
{
Debug.LogError("An action in " + _brain.gameObject.name + " on state " + StateName + " is null.");
}
}
}
/// <summary>
/// Tests this state's transitions
/// </summary>
public virtual void EvaluateTransitions()
{
if (Transitions.Count == 0) { return; }
for (int i = 0; i < Transitions.Count; i++)
{
if (Transitions[i].Decision != null)
{
if (Transitions[i].Decision.Decide())
{
if (!string.IsNullOrEmpty(Transitions[i].TrueState))
{
_brain.TransitionToState(Transitions[i].TrueState);
break;
}
}
else
{
if (!string.IsNullOrEmpty(Transitions[i].FalseState))
{
_brain.TransitionToState(Transitions[i].FalseState);
break;
}
}
}
}
}
}
}