private void GetHitEntityAndPosition(LineD line, out IMyEntity entity, out MyHitInfo hitInfoRet, out object customdata)
{
entity = null;
hitInfoRet = new MyHitInfo();
customdata = null;
// 1. rough raycast
int raycastListIndex = 0;
do
{
if (entity == null)
{
if (raycastListIndex == 0) // cast only the first iteration
{
ProfilerShort.Begin("MyGamePruningStructure::CastProjectileRay");
MyPhysics.CastRay(line.From, line.To, m_raycastResult,
MyPhysics.CollisionLayers.DefaultCollisionLayer);
ProfilerShort.End();
}
if (raycastListIndex < m_raycastResult.Count)
{
MyPhysics.HitInfo hitInfo = m_raycastResult[raycastListIndex];
entity = hitInfo.HkHitInfo.GetHitEntity() as MyEntity;
hitInfoRet.Position = hitInfo.Position;
hitInfoRet.Normal = hitInfo.HkHitInfo.Normal;
hitInfoRet.ShapeKey = hitInfo.HkHitInfo.GetShapeKey(0);
}
}
// 2. prevent shooting through characters, retest trajectory between entity and player
if (!(entity is MyCharacter) || entity == null)
{
// first: raycast, get all entities in line, limit distance if possible
LineD lineLimited = new LineD(line.From, entity == null ? line.To : hitInfoRet.Position);
if (m_entityRaycastResult == null)
{
m_entityRaycastResult = new List <MyLineSegmentOverlapResult <MyEntity> >(16);
}
else
{
m_entityRaycastResult.Clear();
}
MyGamePruningStructure.GetAllEntitiesInRay(ref lineLimited, m_entityRaycastResult);
// second: precise tests, find best result
double bestDistanceSq = double.MaxValue;
IMyEntity entityBest = null;
for (int i = 0; i < m_entityRaycastResult.Count; i++)
{
if (m_entityRaycastResult[i].Element is MyCharacter)
{
MyCharacter hitCharacter = m_entityRaycastResult[i].Element as MyCharacter;
bool intersection = hitCharacter.GetIntersectionWithLine(ref line, ref m_charHitInfo);
if (intersection)
{
double distanceSq =
Vector3D.DistanceSquared(m_charHitInfo.Triangle.IntersectionPointInWorldSpace,
line.From);
if (distanceSq < bestDistanceSq && !IsIgnoredEntity(hitCharacter))
{
bestDistanceSq = distanceSq;
entityBest = hitCharacter;
hitInfoRet.Position = m_charHitInfo.Triangle.IntersectionPointInWorldSpace;
hitInfoRet.Normal = m_charHitInfo.Triangle.NormalInWorldSpace;
customdata = m_charHitInfo;
}
}
}
}
// finally: do we have best result? then return it
if (entityBest != null)
{
entity = entityBest;
return; // this was precise result, so return
}
}
// 3. nothing found in the precise test? then fallback to already found results
if (entity == null)
{
return; // no fallback results
}
if (entity is MyCharacter) // retest character found in fallback
{
MyCharacter hitCharacter = entity as MyCharacter;
bool intersection = hitCharacter.GetIntersectionWithLine(ref line, ref m_charHitInfo);
if (intersection)
{
hitInfoRet.Position = m_charHitInfo.Triangle.IntersectionPointInWorldSpace;
hitInfoRet.Normal = m_charHitInfo.Triangle.NormalInWorldSpace;
customdata = m_charHitInfo;
}
else
{
entity = null; // no hit.
}
}
else
{
MyCubeGrid grid = entity as MyCubeGrid;
if (grid != null)
{
bool success = grid.GetIntersectionWithLine(ref line, ref m_cubeGridHitInfo);
if (success)
{
hitInfoRet.Position = m_cubeGridHitInfo.Triangle.IntersectionPointInWorldSpace;
hitInfoRet.Normal = m_cubeGridHitInfo.Triangle.NormalInWorldSpace;
if (Vector3.Dot(hitInfoRet.Normal, line.Direction) > 0)
{
hitInfoRet.Normal = -hitInfoRet.Normal;
}
customdata = m_cubeGridHitInfo;
}
MyHitInfo info = new MyHitInfo();
info.Position = hitInfoRet.Position;
info.Normal = hitInfoRet.Normal;
}
MyVoxelBase voxel = entity as MyVoxelBase;
if (voxel != null)
{ //get accurate hit because of particles and decals
MyIntersectionResultLineTriangleEx?res;
if (voxel.GetIntersectionWithLine(ref line, out res, IntersectionFlags.DIRECT_TRIANGLES))
{
hitInfoRet.Position = res.Value.IntersectionPointInWorldSpace;
hitInfoRet.Normal = res.Value.NormalInWorldSpace;
hitInfoRet.ShapeKey = 0;
}
}
}
} while (entity == null && ++raycastListIndex < m_entityRaycastResult.Count);
}
private void GetHitEntityAndPosition(LineD line, out IMyEntity entity, out Vector3D hitPosition, out Vector3 hitNormal, out bool hitHead)
{
entity = null;
hitPosition = hitNormal = Vector3.Zero;
hitHead = false;
// 1. rough raycast
if (entity == null)
{
ProfilerShort.Begin("MyGamePruningStructure::CastProjectileRay");
MyPhysics.HitInfo?hitInfo = MyPhysics.CastRay(line.From, line.To, MyPhysics.CollisionLayers.DefaultCollisionLayer);
ProfilerShort.End();
if (hitInfo.HasValue)
{
entity = hitInfo.Value.HkHitInfo.GetHitEntity() as MyEntity;
hitPosition = hitInfo.Value.Position;
hitNormal = hitInfo.Value.HkHitInfo.Normal;
}
}
// 2. prevent shooting through characters, retest trajectory between entity and player
if (!(entity is MyCharacter) || entity == null)
{
// first: raycast, get all entities in line, limit distance if possible
LineD lineLimited = new LineD(line.From, entity == null ? line.To : hitPosition);
if (m_entityRaycastResult == null)
{
m_entityRaycastResult = new List <MyLineSegmentOverlapResult <MyEntity> >(16);
}
else
{
m_entityRaycastResult.Clear();
}
MyGamePruningStructure.GetAllEntitiesInRay(ref lineLimited, m_entityRaycastResult);
// second: precise tests, find best result
double bestDistanceSq = double.MaxValue;
IMyEntity entityBest = null;
for (int i = 0; i < m_entityRaycastResult.Count; i++)
{
if (m_entityRaycastResult[i].Element is MyCharacter)
{
MyCharacter hitCharacter = m_entityRaycastResult[i].Element as MyCharacter;
VRage.Game.Models.MyIntersectionResultLineTriangleEx?t;
hitCharacter.GetIntersectionWithLine(ref line, out t, out hitHead);
if (t != null)
{
double distanceSq = Vector3D.DistanceSquared(t.Value.IntersectionPointInWorldSpace, line.From);
if (distanceSq < bestDistanceSq)
{
bestDistanceSq = distanceSq;
entityBest = hitCharacter;
hitPosition = t.Value.IntersectionPointInWorldSpace;
hitNormal = t.Value.NormalInWorldSpace;
}
}
}
}
// finally: do we have best result? then return it
if (entityBest != null)
{
entity = entityBest;
return; // this was precise result, so return
}
}
// 3. nothing found in the precise test? then fallback to already found results
if (entity == null)
{
return; // no fallback results
}
if (entity is MyCharacter) // retest character found in fallback
{
MyCharacter hitCharacter = entity as MyCharacter;
VRage.Game.Models.MyIntersectionResultLineTriangleEx?t;
hitCharacter.GetIntersectionWithLine(ref line, out t, out hitHead);
if (t == null)
{
entity = null; // no hit.
}
else
{
hitPosition = t.Value.IntersectionPointInWorldSpace;
hitNormal = t.Value.NormalInWorldSpace;
hitHead = hitHead && m_projectileAmmoDefinition.HeadShot; // allow head shots only for ammo supporting it in definition
}
}
else
{
MyCubeGrid grid = entity as MyCubeGrid;
if (grid != null)
{
MyIntersectionResultLineTriangleEx?result;
bool success = grid.GetIntersectionWithLine(ref line, out result);
if (success)
{
hitPosition = result.Value.IntersectionPointInWorldSpace;
hitNormal = result.Value.NormalInWorldSpace;
}
MyHitInfo info = new MyHitInfo();
info.Position = hitPosition;
info.Normal = hitNormal;
}
}
}
