/// <summary>
/// Gets the best block to target from a grid.
/// </summary>
/// <param name="grid">The grid to search</param>
/// <param name="tType">Checked for destroy</param>
/// <param name="target">The best block fromt the grid</param>
/// <param name="distanceValue">The value assigned based on distance and position in blocksToTarget.</param>
/// <remarks>
/// <para>Decoy blocks will be given a distanceValue of the distance squared to weapon.</para>
/// <para>Blocks from blocksToTarget will be given a distanceValue of the distance squared * (index + 1)^3.</para>
/// <para>Other blocks will be given a distanceValue of the distance squared * (1e12).</para>
/// </remarks>
public bool GetTargetBlock(IMyCubeGrid grid, TargetType tType, out IMyCubeBlock target, out double distanceValue, bool doRangeTest = true)
{
Vector3D myPosition = ProjectilePosition();
CubeGridCache cache = CubeGridCache.GetFor(grid);
target = null;
distanceValue = double.MaxValue;
if (cache == null)
{
return(false);
}
if (cache.TerminalBlocks == 0)
{
Log.TraceLog("no terminal blocks on grid: " + grid.DisplayName);
return(false);
}
// get decoy block
{
foreach (IMyCubeBlock block in cache.BlocksOfType(typeof(MyObjectBuilder_Decoy)))
{
if (!TargetableBlock(block, true))
{
continue;
}
double distanceSq = Vector3D.DistanceSquared(myPosition, block.GetPosition());
if (doRangeTest && distanceSq > Options.TargetingRangeSquared)
{
continue;
}
if (distanceSq < distanceValue && CanConsiderHostile(block))
{
target = block;
distanceValue = distanceSq;
}
}
if (target != null)
{
Log.TraceLog("for type = " + tType + " and grid = " + grid.DisplayName + ", found a decoy block: " + target.DisplayNameText + ", distanceValue: " + distanceValue);
return(true);
}
}
// get block from blocksToTarget
if (!Options.blocksToTarget.IsNullOrEmpty())
{
int index = 0;
IMyCubeBlock in_target = target;
double in_distValue = distanceValue;
foreach (MyDefinitionId[] ids in Options.listOfBlocks.IdGroups())
{
index++;
foreach (MyDefinitionId id in ids)
{
//Log.TraceLog("searching for blocks of type: " + id + ", count: " + cache.BlocksOfType(id).Count());
foreach (IMyCubeBlock block in cache.BlocksOfType(id))
{
if (!TargetableBlock(block, true))
{
continue;
}
double distSq = Vector3D.DistanceSquared(myPosition, block.GetPosition());
if (doRangeTest && distSq > Options.TargetingRangeSquared)
{
Log.TraceLog("out of range: " + block.nameWithId());
continue;
}
distSq *= index * index * index;
if (distSq < in_distValue && CanConsiderHostile(block))
{
in_target = block;
in_distValue = distSq;
}
}
}
}
target = in_target;
distanceValue = in_distValue;
if (target != null) // found a block from blocksToTarget
{
Log.TraceLog("for type = " + tType + " and grid = " + grid.DisplayName + ", target = " + target.DisplayNameText +
", distance = " + Vector3D.Distance(myPosition, target.GetPosition()) + ", distanceValue = " + distanceValue);
return(true);
}
}
// get any IMyTerminalBlock
bool destroy = (tType & TargetType.Moving) != 0 || (tType & TargetType.Destroy) != 0;
if (destroy || Options.blocksToTarget.IsNullOrEmpty())
{
double closest = double.MaxValue;
foreach (MyCubeBlock block in cache.AllCubeBlocks())
{
if (block is IMyTerminalBlock && TargetableBlock(block, !destroy))
{
double distanceSq = Vector3D.DistanceSquared(myPosition, block.PositionComp.GetPosition());
if (doRangeTest && distanceSq > Options.TargetingRangeSquared)
{
continue;
}
distanceSq *= 1e12;
if (distanceSq < closest && CanConsiderHostile(block))
{
target = block;
distanceValue = distanceSq;
}
}
}
if (target != null)
{
Log.TraceLog("for type = " + tType + " and grid = " + grid.DisplayName + ", found a block: " + target.DisplayNameText + ", distanceValue = " + distanceValue);
return(true);
}
}
return(false);
}