private bool createEffect()
{
LightEffectParam newParam = new LightEffectParam();
EffectParam.ColoneTo(ref newParam);
float maxDistance = EffectParam.fDistance;
float effectRad = EffectParam.fAttackRange;
Vector3 newSourcePos = newParam.srcObject.transform.position;
if (sourceTransform != null)
{
newSourcePos = sourceTransform.position;
}
Vector3 areaTargetPos = EffectParam.targetPos;
Vector3 newTargetPos = areaTargetPos;
//构造一个范围内的随机目标位置
if (areaConfig.projectOnGround == true)
{ //构造一个投影到地面的圆形
int angle = Random.Range(0, 360);
float _rad = angle * Mathf.PI / 180.0f;
Vector3 offset = new Vector3(Mathf.Sin(_rad), 0, Mathf.Cos(_rad));
float dis = Random.Range(0.0f, effectRad);
offset *= dis;
newTargetPos += offset;
RaycastHit _ClosestHitInfo_Down;
RaycastHit _ClosestHitInfo_Up;
float rayDistance = maxDistance;
Ray PointToGroundRayDown = new Ray(newTargetPos, new Vector3(0, -1, 0));
Ray PointToGroundRayUp = new Ray(newTargetPos, new Vector3(0, 1, 0));
bool DownHit = Physics.Raycast(PointToGroundRayDown, out _ClosestHitInfo_Down, rayDistance, -1);
bool UpHit = Physics.Raycast(PointToGroundRayUp, out _ClosestHitInfo_Up, rayDistance, -1);
Vector3 recordPos = newTargetPos;
float hitDistance = maxDistance;
if (DownHit)
{
hitDistance = (_ClosestHitInfo_Down.point - recordPos).magnitude;
newTargetPos = _ClosestHitInfo_Down.point;
}
if (UpHit)
{
if ((_ClosestHitInfo_Up.point - recordPos).magnitude < hitDistance)
{
hitDistance = (_ClosestHitInfo_Up.point - recordPos).magnitude;
newTargetPos = _ClosestHitInfo_Up.point;
}
}
newParam.targetPos = newTargetPos;
}
else if (effectRad > 0.01f)
{ //构造一个圆锥
Vector3 normal = EffectParam.targetPos - newSourcePos;
Vector3 tangent = new Vector3(0, 0, 1);
Vector3.OrthoNormalize(ref normal, ref tangent);
int angle = Random.Range(0, 360);
Quaternion rotation = Quaternion.AngleAxis((float)angle, normal);
tangent = rotation * tangent;
float dis = Random.Range(0.0f, effectRad);
tangent *= dis;
newTargetPos += tangent;
if (areaConfig.extentToMaxDistance)
{//将目标点拉远，延长用更容易造成与地面的碰撞
Vector3 dir = newTargetPos - newSourcePos;
dir.Normalize();
newTargetPos = newSourcePos + dir * maxDistance;
}
newParam.targetPos = newTargetPos;
}
else
{
if (areaConfig.extentToMaxDistance)
{//将目标点拉远，延长用更容易造成与地面的碰撞
Vector3 dir = newTargetPos - newSourcePos;
dir.Normalize();
newTargetPos = newSourcePos + dir * maxDistance;
}
newParam.targetObject = EffectParam.targetObject;
newParam.targetPos = EffectParam.targetPos;
}
if (areaConfig.customOffset.sqrMagnitude > 0.001f)
{
//有此设置时，变更起始点，变为相对于newParam.targetPos，偏移customOffet
Vector3 offsetNormal = EffectParam.targetPos - newSourcePos;
offsetNormal.y = 0;
offsetNormal.Normalize();
Vector3 offsetTangent = new Vector3(0, 1, 0);
Vector3 offsetBinormal = Vector3.Cross(offsetTangent, offsetNormal);
//Vector3.OrthoNormalize(ref offsetNormal, ref offsetTangent,ref offsetBinormal);
Vector3 offSet = newParam.targetPos;
offSet += offsetNormal * areaConfig.customOffset.z;
offSet += offsetTangent * areaConfig.customOffset.y;
offSet += offsetBinormal * areaConfig.customOffset.x;
newParam.sourcePos = offSet;
newParam.nEffectFlag |= (int)LightEffectParam.EFFECT_FLAG.CustomSourcePos;
}
LightingEffectManager leManager = EffectParam.srcObject.GetComponent <LightingEffectManager>();
if (leManager != null)
{
////测试用代码，用来标记检测发射区域是否正确
//GameObject checkPoint = GameObject.CreatePrimitive(PrimitiveType.Sphere);
//checkPoint.transform.localScale = new Vector3(0.2f, 0.2f, 0.2f);
//checkPoint.transform.SetPosition( newParam.targetPos;
//checkPoint.collider.enabled = false;
//checkPoint.name = "Point" + mEffectLeftCount.ToString();
leManager.AddLighting(areaConfig.subEffectID, newParam);
}
return(true);
}
