void GetTarget(IMyCharacter character, out IMyCubeGrid targetGrid, out IMySlimBlock targetBlock, out IMyPlayer targetPlayer, out Vector3D aimPoint)
{
targetGrid = null;
targetBlock = null;
targetPlayer = null;
bool aiming = Utils.IsAimingDownSights(character);
MatrixD head = character.GetHeadMatrix(false, true);
Vector3D rayDir = head.Forward;
Vector3D rayFrom = head.Translation;
if (aiming)
{
rayFrom += rayDir * PAINT_AIM_START_OFFSET;
}
Vector3D rayTo = head.Translation + rayDir * PAINT_DISTANCE;
aimPoint = rayTo;
targetGrid = MyAPIGateway.CubeBuilder.FindClosestGrid();
if (targetGrid == null || targetGrid.Physics == null || !targetGrid.Physics.Enabled)
{
targetGrid = null;
return;
}
// older selection behavior when aiming down sights
if (aiming)
{
Vector3I?blockPos = targetGrid.RayCastBlocks(rayFrom, rayTo);
if (blockPos.HasValue)
{
targetBlock = targetGrid.GetCubeBlock(blockPos.Value);
}
return;
}
// HACK copied and converted from MyDrillSensorRayCast.ReadEntitiesInRange() + MyCasterComponent.OnWorldPosChanged()
// last cloned in SE v201
#region Welder-like block selection
hits.Clear();
detections.Clear();
rayOverlapResults.Clear();
MyAPIGateway.Physics.CastRay(rayFrom, rayTo, hits, 24);
foreach (IHitInfo hit in hits)
{
IMyEntity parent = hit.HitEntity?.GetTopMostParent();
if (parent == null || parent.Physics == null || !parent.Physics.Enabled)
{
continue;
}
Vector3D hitPos = hit.Position;
IMyCubeGrid grid = parent as IMyCubeGrid;
if (grid != null)
{
// just how it's set in game code /shrug
hitPos += hit.Normal * -0.005f;
}
DetectionInfo detected;
if (detections.TryGetValue(parent.EntityId, out detected))
{
double dist1 = Vector3D.DistanceSquared(rayFrom, detected.DetectionPoint);
double dist2 = Vector3D.DistanceSquared(rayFrom, hitPos);
if (dist1 > dist2)
{
detections[parent.EntityId] = new DetectionInfo(parent, hitPos);
}
}
else
{
detections[parent.EntityId] = new DetectionInfo(parent, hitPos);
}
}
hits.Clear();
LineD line = new LineD(rayFrom, rayTo);
MyGamePruningStructure.GetAllEntitiesInRay(ref line, rayOverlapResults);
foreach (MyLineSegmentOverlapResult <MyEntity> result in rayOverlapResults)
{
if (result.Element == null)
{
continue;
}
IMyCubeBlock block = result.Element as IMyCubeBlock;
if (block == null)
{
continue;
}
MyCubeBlockDefinition def = (MyCubeBlockDefinition)block.SlimBlock.BlockDefinition;
if (def.HasPhysics)
{
continue; // this section is only for things that are not caught by the raycast
}
MyEntity parent = result.Element.GetTopMostParent();
if (parent.Physics == null || !parent.Physics.Enabled)
{
continue;
}
MatrixD invMatrix = block.PositionComp.WorldMatrixNormalizedInv;
Vector3 localFrom = Vector3D.Transform(rayFrom, ref invMatrix);
Vector3 localTo = Vector3D.Transform(rayTo, ref invMatrix);
float?intersectDistance = new Ray(localFrom, Vector3.Normalize(localTo - localFrom)).Intersects(block.PositionComp.LocalAABB) + 0.01f;
if (intersectDistance.HasValue && intersectDistance <= PAINT_DISTANCE)
{
Vector3D hitPos = rayFrom + rayDir * intersectDistance.Value;
DetectionInfo detected;
if (detections.TryGetValue(parent.EntityId, out detected))
{
double dist1 = Vector3D.DistanceSquared(rayFrom, detected.DetectionPoint);
double dist2 = Vector3D.DistanceSquared(rayFrom, hitPos);
if (dist1 > dist2)
{
detections[parent.EntityId] = new DetectionInfo(parent, hitPos);
}
}
else
{
detections[parent.EntityId] = new DetectionInfo(parent, hitPos);
}
}
}
rayOverlapResults.Clear();
if (detections.Count == 0)
{
return;
}
double closetDist = double.MaxValue;
DetectionInfo closestObj = new DetectionInfo(null, Vector3D.Zero);
foreach (DetectionInfo detected in detections.Values)
{
double dist = Vector3D.DistanceSquared(detected.DetectionPoint, rayFrom);
if (dist < closetDist)
{
closestObj = detected;
closetDist = dist;
}
}
detections.Clear();
targetGrid = closestObj.Entity as IMyCubeGrid;
if (targetGrid == null)
{
return;
}
Vector3D localPos = Vector3D.Transform(closestObj.DetectionPoint, targetGrid.WorldMatrixNormalizedInv);
Vector3I cube;
targetGrid.FixTargetCube(out cube, localPos / targetGrid.GridSize);
targetBlock = targetGrid.GetCubeBlock(cube);
#endregion Welder-like block selection
}
