关于路径跟随设置点形成路径控制物体运动

用过Torque3D的人都知道，在这个引擎中可以在编辑模式下设定路径然后AI就会按照这个路径运动，现在unity3D也可以啦分享给大家希望能有点帮助~总共3个文件

把第一个个文件放在新建的gameobject上例如cube，然后creat empty创建空object作为splineparent，再创建4个或者多个sphere1，2，3，4作为它的子物体，然后将splineparent拖到这个代码var SplineParent : GameObject中，最后会看到cube按照sphere1到4的顺序运动~

JavaScript - SplineController.js

enum eOrientationMode { NODE = 0, TANGENT }

var SplineParent : GameObject;

var Duration : float = 10.0;

var OrientationMode : eOrientationMode = eOrientationMode.NODE;

var WrapMode : eWrapMode = eWrapMode.ONCE;

var AutoStart : boolean = true;

var AutoClose : boolean = true;

var HideOnExecute : boolean = true;

private var mSplineInterp : SplineInterpolator = null;

private var mTransforms : Array = null;

@script AddComponentMenu("Splines/Spline Controller")

function OnDrawGizmos()

{

var trans : Array = GetTransforms();

if(trans.length < 2)

return;

var interp = new SplineInterpolator();

SetupSplineInterpolator(interp, trans);

interp.StartInterpolation(null, false, WrapMode);

var prevPos : Vector3 = trans[0].position;

for(c=1; c <= 100; c++)

{

var currTime:float = c * Duration / 100.0;

var currPos = interp.GetHermiteAtTime(currTime);

var mag:float = (currPos-prevPos).magnitude * 2.0;

Gizmos.color = Color(mag, 0.0, 0.0, 1.0);

Gizmos.DrawLine(prevPos, currPos);

prevPos = currPos;

}

}

function Start()

{

mSplineInterp = gameObject.AddComponent(SplineInterpolator);

mTransforms = GetTransforms();

if(HideOnExecute)

DisableTransforms();

if(AutoStart)

FollowSpline();

}

function SetupSplineInterpolator(interp:SplineInterpolator, trans:Array) : void {

interp.Reset();

if(AutoClose)

var step : float = Duration / trans.length;

else

step = Duration / (trans.length-1);

for(var c:int = 0; c < trans.length; c++)

{

if(OrientationMode == OrientationMode.NODE)

{

interp.AddPoint(trans[c].position, trans[c].rotation, step*c, Vector2(0.0, 1.0));

}

else if(OrientationMode == OrientationMode.TANGENT)

{

if(c != trans.length-1)

var rot : Quaternion = Quaternion.LookRotation(trans[c+1].position - trans[c].position, trans[c].up);

else if(AutoClose)

rot = Quaternion.LookRotation(trans[0].position -

trans[c].position, trans[c].up);

else

rot = trans[c].rotation;

interp.AddPoint(trans[c].position, rot, step*c, Vector2(0.0, 1.0));

}

}

if(AutoClose)

interp.SetAutoCloseMode(step*c);

}

// We need this to sort GameObjects by name

class NameComparer extends IComparer

{

function Compare(trA : Object, trB : Object) : int {

return pareTo();

}

}