104 lines
3.4 KiB
C#
104 lines
3.4 KiB
C#
using System;
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namespace TEngine
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{
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/// <summary>
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/// 有限状态机状态基类。
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/// </summary>
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/// <typeparam name="T">有限状态机持有者类型。</typeparam>
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public abstract class FsmState<T> where T : class
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{
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/// <summary>
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/// 初始化有限状态机状态基类的新实例。
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/// </summary>
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public FsmState()
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{
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}
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/// <summary>
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/// 有限状态机状态初始化时调用。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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protected internal virtual void OnInit(IFsm<T> fsm)
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{
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}
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/// <summary>
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/// 有限状态机状态进入时调用。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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protected internal virtual void OnEnter(IFsm<T> fsm)
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{
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}
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/// <summary>
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/// 有限状态机状态轮询时调用。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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/// <param name="elapseSeconds">逻辑流逝时间，以秒为单位。</param>
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/// <param name="realElapseSeconds">真实流逝时间，以秒为单位。</param>
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protected internal virtual void OnUpdate(IFsm<T> fsm, float elapseSeconds, float realElapseSeconds)
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{
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}
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/// <summary>
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/// 有限状态机状态离开时调用。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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/// <param name="isShutdown">是否是关闭有限状态机时触发。</param>
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protected internal virtual void OnLeave(IFsm<T> fsm, bool isShutdown)
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{
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}
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/// <summary>
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/// 有限状态机状态销毁时调用。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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protected internal virtual void OnDestroy(IFsm<T> fsm)
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{
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}
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/// <summary>
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/// 切换当前有限状态机状态。
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/// </summary>
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/// <typeparam name="TState">要切换到的有限状态机状态类型。</typeparam>
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/// <param name="fsm">有限状态机引用。</param>
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protected void ChangeState<TState>(IFsm<T> fsm) where TState : FsmState<T>
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{
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Fsm<T> fsmImplement = (Fsm<T>)fsm;
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if (fsmImplement == null)
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{
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throw new GameFrameworkException("FSM is invalid.");
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}
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fsmImplement.ChangeState<TState>();
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}
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/// <summary>
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/// 切换当前有限状态机状态。
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/// </summary>
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/// <param name="fsm">有限状态机引用。</param>
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/// <param name="stateType">要切换到的有限状态机状态类型。</param>
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protected void ChangeState(IFsm<T> fsm, Type stateType)
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{
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Fsm<T> fsmImplement = (Fsm<T>)fsm;
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if (fsmImplement == null)
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{
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throw new GameFrameworkException("FSM is invalid.");
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}
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if (stateType == null)
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{
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throw new GameFrameworkException("State type is invalid.");
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}
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if (!typeof(FsmState<T>).IsAssignableFrom(stateType))
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{
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throw new GameFrameworkException(Utility.Text.Format("State type '{0}' is invalid.", stateType.FullName));
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}
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fsmImplement.ChangeState(stateType);
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}
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}
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}
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