private IEnumerable <IGameAction> GetPossiblePushActions()
{
for (var index = 0; index < MyUnits.Count; index++)
{
var unit = MyUnits[index];
if (unit.X < 0)
{
continue;
}
foreach (var targetDir in Directions.All8)
{
var target = unit + targetDir;
if (HisUnits.Any(u => u.X >= 0 && u.Equals(target)))
{
foreach (var pushDir in targetDir.PushDirections())
{
if (CanMove(target, target + pushDir))
{
var action = new PushAndBuildAction(index, targetDir, pushDir);
EnsureMoveValid(action);
yield return(action);
}
}
}
}
}
}
protected bool Equals(PushAndBuildAction other)
{
return(PushDirection == other.PushDirection && TargetDirection == other.TargetDirection && UnitIndex == other.UnitIndex);
}
