public override void InitData()
{
type = ShapeType.arc;
arcRadius = ToolMethod.Config2Logic(arcRadiusCon);
arcCenter = ToolGameVector.ChangeGameVectorConToGameVector2(arcCenterCon) + basePosition;
}
public void InitSelf(ObjectType _objType, int _objID)
{
isInDestory = false;
objUid = new ObjectUid(_objType, _objID);
basePosition = ToolGameVector.ChangeGameVectorConToGameVector2(baseCenter);
baseRadius = ToolMethod.Config2Logic(baseRadiusCon);
InitData();
}
/// <summary>
/// 圆和多边形的碰撞
/// </summary>
/// <returns><c>true</c>, if circle and polygon was collided, <c>false</c> otherwise.</returns>
/// <param name="_c1">圆心.</param>
/// <param name="_radius1">圆半径.</param>
/// <param name="vectexs">多边形顶点.</param>
/// <param name="normalDir">多边形每条边的法向量.</param>
/// <param name="_amend">位置修正.</param>
public static bool CollideCircleAndPolygon(GameVector2 _c1, int _radius1, GameVec2Con[] vectexs, int[] normalDir, out GameVector2 _amend)
{
_amend = GameVector2.zero;
Vector3 _circleCenter = ToolGameVector.ChangeGameVectorToVector3(_c1);
for (int i = 0; i < vectexs.Length; i++)
{
Vector3 lineBegin = ToolGameVector.ChangeGameVectorConToVector3(vectexs [i]);
int endIndex = (i + 1) % vectexs.Length;
Vector3 lineEnd = ToolGameVector.ChangeGameVectorConToVector3(vectexs [endIndex]);
Vector3 _circleVec = _circleCenter - lineBegin;
Vector3 _line = lineEnd - lineBegin;
Vector3 _cross = Vector3.Cross(_circleVec, _line);
if (_cross.z < 0)
{
//在线段的左侧,即多边形的外侧
Vector3 vecProj = Vector3.Project(_circleVec, _line); //投影点
float disLine = _line.magnitude;
float proj_begin = vecProj.magnitude;
float proj_end = (vecProj - _line).magnitude;
float projlengh = proj_begin + proj_end;
if ((disLine + 1) >= projlengh)
{
//投影在线段上
int dis = (int)Mathf.Sqrt(_circleVec.sqrMagnitude - vecProj.sqrMagnitude);
int disRadius = _radius1 / 100;
if (dis < disRadius)
{
int amendDis = 1 + (int)(_radius1 / 100 - dis);
_amend = amendDis * BattleData.Instance.GetSpeed(normalDir [i]);
return(true);
}
else
{
return(false);
}
}
else
{
Vector3 newLineBegin;
Vector3 newLineEnd;
//投影不在当前线段上
bool isSameDir = Vector3.Dot(vecProj, _line) > 0f ? true : false; //为0的时候是垂直,不会出现该情况
int normalIndex;
int linePointIndex; //2条线段的交点
if (isSameDir)
{
//同向
newLineBegin = lineEnd;
int newEndIndex = (i + 2) % vectexs.Length;
newLineEnd = ToolGameVector.ChangeGameVectorConToVector3(vectexs [newEndIndex]);
normalIndex = endIndex;
linePointIndex = endIndex;
}
else
{
//反向
if (i == 0)
{
newLineBegin = ToolGameVector.ChangeGameVectorConToVector3(vectexs [vectexs.Length - 1]);
}
else
{
newLineBegin = ToolGameVector.ChangeGameVectorConToVector3(vectexs [i - 1]);
}
newLineEnd = lineBegin;
normalIndex = vectexs.Length - 1;
linePointIndex = i;
}
Vector3 newCircleVec = _circleCenter - newLineBegin;
Vector3 _newline = newLineEnd - newLineBegin;
Vector3 newVecProj = Vector3.Project(newCircleVec, _newline); //投影点
float newdisLine = _newline.magnitude;
float newproj_begin = newVecProj.magnitude;
float newproj_end = (newVecProj - _newline).magnitude;
float newprojlengh = newproj_begin + newproj_end;
if ((newdisLine + 1) >= newprojlengh)
{
//投影在线段上
int dis = (int)Mathf.Sqrt(newCircleVec.sqrMagnitude - newVecProj.sqrMagnitude);
int disRadius = _radius1 / 100;
if (dis < disRadius)
{
int amendDis = 1 + (int)(_radius1 / 100 - dis);
_amend = amendDis * BattleData.Instance.GetSpeed(normalDir [normalIndex]);
return(true);
}
else
{
return(false);
}
}
else
{
bool isNewSameDir = Vector3.Dot(newVecProj, _newline) > 0f ? true : false;
if (isNewSameDir != isSameDir)
{
//夹角处
GameVector2 _point = ToolGameVector.ChangeGameVectorConToGameVector2(vectexs [linePointIndex]);
GameVector2 _outAmend;
bool _result = ToolGameVector.CollidePointAndCircle(_c1, _point, _radius1, out _outAmend);
_amend = _outAmend;
return(_result);
}
}
}
}
}
return(false);
}
