// 球体范围碰撞实现
public bool TraceSphere(ref D3DXVECTOR3 center, float radius)
{
Vector3 _center;
_center.x = center.x;
_center.y = center.y;
_center.z = center.z;
return(game_obj.TraceSphere(_center, radius));
}
// 碰撞测试是否有阻挡实现
public bool TraceHitted(ref D3DXVECTOR3 src, ref D3DXVECTOR3 dst)
{
Vector3 _src;
_src.x = src.x;
_src.y = src.y;
_src.z = src.z;
Vector3 _dst;
_dst.x = dst.x;
_dst.y = dst.y;
_dst.z = dst.z;
return(game_obj.TraceHitted(_src, _dst));
}
// 碰撞测试详细信息实现
public bool TraceDetail(ref D3DXVECTOR3 src, ref D3DXVECTOR3 dst, ref DxTraceInfo result)
{
Vector3 _src;
_src.x = src.x;
_src.y = src.y;
_src.z = src.z;
Vector3 _dst;
_dst.x = dst.x;
_dst.y = dst.y;
_dst.z = dst.z;
float dis = Vector3.Distance(_src, _dst);
if (dis <= 0)
{
return(false);
}
RaycastHit[] hits = new RaycastHit[result.nHitMax];
if (!game_obj.TraceDetail(_src, _dst, ref hits, ref result.nHitCount))
{
return(false);
}
Vector3 origin = _dst - _src;
//RaycastHit 转换成 DxTraceInfo
result.fDistance = 1e8f;
for (int i = 0; i < result.nHitCount; ++i)
{
RaycastHit hit = hits[i];
result.Hits[i].fDistance = hit.distance / dis;
if (result.fDistance > result.Hits[i].fDistance)
{
result.fDistance = result.Hits[i].fDistance;
}
if ((hit.collider && hit.collider.gameObject) && (Terrain.activeTerrain.gameObject == hit.collider.gameObject))
{
result.Hits[i].TraceID = new PERSISTID(0);
}
else
{
result.Hits[i].TraceID = new PERSISTID(1);
}
result.Hits[i].nMaterialIndex = 0;
result.Hits[i].strTexName = "";
if (hit.normal.y != 0.0f)
{
Vector3 p = hit.point + hit.normal;
float y = (Vector3.Dot(hit.normal, hit.point) - hit.normal.x * p.x - hit.normal.z * p.z) / hit.normal.y;
Vector3 p1 = new Vector3(p.x, y, p.z);
Vector3 n = Vector3.Cross(hit.normal, p1);
Vector3 p2 = n + hit.point;
result.Hits[i].Vertex[0] = hit.point;
result.Hits[i].Vertex[1] = p1;
result.Hits[i].Vertex[2] = p2;
result.Hits[i].fTraceU = 0.0f;
result.Hits[i].fTraceV = 0.0f;
continue;
}
if (hit.normal.x != 0.0f)
{
Vector3 p = hit.point + hit.normal;
float x = (Vector3.Dot(hit.normal, hit.point) - hit.normal.y * p.y - hit.normal.z * p.z) / hit.normal.x;
Vector3 p1 = new Vector3(x, p.y, p.z);
Vector3 n = Vector3.Cross(hit.normal, p1);
Vector3 p2 = n + hit.point;
result.Hits[i].Vertex[0] = hit.point;
result.Hits[i].Vertex[1] = p1;
result.Hits[i].Vertex[2] = p2;
result.Hits[i].fTraceU = 0.0f;
result.Hits[i].fTraceV = 0.0f;
continue;
}
if (hit.normal.z != 0.0f)
{
Vector3 p = hit.point + hit.normal;
float z = (Vector3.Dot(hit.normal, hit.point) - hit.normal.x * p.x - hit.normal.y * p.y) / hit.normal.z;
Vector3 p1 = new Vector3(p.x, p.y, z);
Vector3 n = Vector3.Cross(hit.normal, p1);
Vector3 p2 = n + hit.point;
result.Hits[i].Vertex[0] = hit.point;
result.Hits[i].Vertex[1] = p1;
result.Hits[i].Vertex[2] = p2;
result.Hits[i].fTraceU = 0.0f;
result.Hits[i].fTraceV = 0.0f;
continue;
}
}
return(true);
}
