/// <summary>
/// 寻路到某个点然后做某事，如果当前距离小于目标距离则直接进入状态，否则就寻路到适合的地点再进行寻路
/// </summary>
/// <param name="self"></param>
/// <param name="target">目标地点</param>
/// <param name="targetRange">目标距离</param>
/// <param name="targetState">目标状态</param>
public static void NavigateTodoSomething(this UnitPathComponent self, Vector3 target, float targetRange, AFsmStateBase targetState)
{
if (Vector3.Distance((self.Entity as Unit).Position, target) >= targetRange)
{
if (!self.Entity.GetComponent <StackFsmComponent>().ChangeState <NavigateState>(StateTypes.Run, "Navigate", 1))
{
ReferencePool.Release(targetState);
return;
}
self.MoveTodoSomething(target, self.Entity.GetComponent <StackFsmComponent>().GetCurrentFsmState(), targetState, targetRange)
.Coroutine();
}
else
{
self.Entity.GetComponent <StackFsmComponent>().ChangeState(targetState);
}
}
/// <summary>
/// 移动到目标点，随后进入指定状态（如果有的话）
/// </summary>
/// <param name="self"></param>
/// <param name="target"></param>
/// <param name="bindState"></param>
/// <param name="nextState"></param>
/// <param name="targetRange">目标范围，当自身与目标位置小于等于此范围时，则停止寻路，进入NextState</param>
/// <returns></returns>
private static async ETVoid MoveTodoSomething(this UnitPathComponent self, Vector3 target, AFsmStateBase bindState,
AFsmStateBase nextState = null, float targetRange = 0)
{
self.BindState = bindState;
self.NextState = nextState;
self.Target = target;
self.TargetRange = targetRange;
Unit unit = self.GetParent <Unit>();
RecastPathComponent recastPathComponent = Game.Scene.GetComponent <RecastPathComponent>();
RecastPath recastPath = ReferencePool.Acquire <RecastPath>();
recastPath.StartPos = unit.Position;
recastPath.EndPos = new Vector3(target.x, target.y, target.z);
self.RecastPath = recastPath;
//TODO 因为目前阶段只有一张地图，所以默认mapId为10001
recastPathComponent.SearchPath(10001, self.RecastPath);
//Log.Debug($"find result: {self.ABPath.Result.ListToString()}");
self.CancellationTokenSource?.Cancel();
self.CancellationTokenSource = new CancellationTokenSource();
await self.MoveAsync(self.RecastPath.Results);
self.CancellationTokenSource.Dispose();
self.CancellationTokenSource = null;
if (nextState != null)
{
self.Entity.GetComponent <StackFsmComponent>().ChangeState(nextState);
}
self.Entity.GetComponent <StackFsmComponent>().RemoveState(bindState.StateName);
}