/// <summary>
/// Finds a path from the start point to the end point and loads it into the corridor.
/// </summary>
/// <remarks>
/// <para>
/// <b>Warning</b>: The corridor must be available before calling this method.
/// </para>
/// <para>
/// The input points are all expected to be valid. (E.g. polyRef != 0)
/// </para>
/// </remarks>
/// <param name="start">
/// A valid navigation mesh point representing the start of the path.
/// </param>
/// <param name="end">
/// A valid navigation mesh point representing the end of the path.
/// </param>
/// <returns>The length of the path, or -1 on failure.</returns>
public int PlanCorridor(NavmeshPoint start, NavmeshPoint end)
{
// Note: Don't try to re-use the current corridor. Unlike
// paths, the corridor is more likely to become malformed
// over time.
int pathCount;
if (start.polyRef == 0 || end.polyRef == 0 || corridor == null)
{
return(-1);
}
if (start.polyRef == end.polyRef)
{
corridor.Reset(start);
corridor.MoveTarget(end.point);
data.navStatus = NavStatus.Sucess;
return(1);
}
else
{
data.navStatus = navGroup.query.FindPath(start
, end
, navGroup.filter
, agentGroup.pathBuffer
, out pathCount);
}
corridor.Reset(start);
if (pathCount > 0)
{
corridor.SetCorridor(end.point
, agentGroup.pathBuffer
, pathCount);
}
return(pathCount);
}
//寻找路线：查找从起点到终点的路径，并将其加载到道路中
public int PlanCorridor(NavmeshPoint start, NavmeshPoint end)
{
//原作标识：不要尝试重用corridor，这个东西有更多的可能性变得很畸形
int pathCount;
//如果点不可用就会直接失败
if (start.polyRef == 0 || end.polyRef == 0 || corridor == null)
{
return(-1);
}
//如果相同点直接结束，navStatus更新
if (start.polyRef == end.polyRef)
{
corridor.Reset(start);
corridor.MoveTarget(end.point);
navStatus = NavStatus.Sucess;
return(1);
}
else
{
//调用NavmeshQuery的方法进行寻路，然后内部走NavmeshQueryEx类调用dll
//最后初步猜测调用Detour的DetourNavMeshQuery（有待考证）
navStatus = navGroup.query.FindPath(start, end, navGroup.filter, agentGroup.pathBuffer, out pathCount);
}
corridor.Reset(start);
if (pathCount > 0)
{
corridor.SetCorridor(end.point, agentGroup.pathBuffer, pathCount);
}
return(pathCount);
}
private void HandlePathBufferResize()
{
mCorridor = new PathCorridor(
mPath.MaxElementCount, mCornerPolys.MaxElementCount, mGroup.query, mGroup.filter);
mCorridorData = new PathCorridorData(mPath.MaxElementCount);
if (mPathEnd.polyRef != 0)
{
FindPath();
}
else if (mPathStart.polyRef != 0)
{
mCorridor.Reset(mPathStart);
}
}
private void HandleHit(RaycastHit hit)
{
if (Input.GetKeyDown(StdButtons.SelectA))
{
if (mPathStart.polyRef == 0 || mPathEnd.polyRef == 0)
{
NavmeshPoint point = GetNavmeshPoint(hit.point);
if (point.polyRef == 0)
{
return;
}
if (mPathStart.polyRef == 0)
{
mPathStart = point;
mCorridor.Reset(mPathStart);
return;
}
else
{
mPathEnd = point;
FindPath();
return;
}
}
else if (mPathCount > 0)
{
mCorridor.MovePosition(hit.point);
return;
}
}
else if (mPathCount > 0)
{
if (Input.GetKeyDown(StdButtons.SelectB))
{
mCorridor.MoveTarget(hit.point);
return;
}
else if (Input.GetKeyDown(StdButtons.SetA))
{
NavmeshPoint point = GetNavmeshPoint(hit.point);
if (point.polyRef != 0)
{
mPathEnd = point;
FindPath();
}
return;
}
else if (Input.GetKeyDown(StdButtons.SetB))
{
NavmeshPoint point = GetNavmeshPoint(hit.point);
if (point.polyRef != 0)
{
mPathStart = point;
FindPath();
}
return;
}
else if (Input.GetKeyDown(StdButtons.SetC))
{
NavmeshPoint point = GetNavmeshPoint(hit.point);
if (point.polyRef != 0)
{
mCorridor.OptimizePathVisibility(point.point, optimizationRange, true);
mOptimizeStart = mCorridor.Position.point;
mOptimizeEnd = point.point;
mOptimizeTimer = TimerLength;
}
}
}
}