public ChickenElement GetElement()
{
// ReSharper disable once ConvertIfStatementToNullCoalescingExpression
if (_cachedElement == null)
{
_cachedElement = new ChickenElement(this.NextPosition, this.NextBeakAngle);
}
return(_cachedElement);
}
private void ResetCachedElement()
{
_cachedElement = null;
}
private bool ProcessChickenUnitMoves(IList <ChickenUnit> aliveChickens)
{
//// TODO: [vmcl] Use bisection to get conflicting units closer to each other
//// TODO: [vmcl] Optimize number of collision checks!
//// TODO: [vmcl] Divide move: eg. unit couldn't move but could turn beak or vice versa
_moveInfoStates.Clear();
for (var unitIndex = 0; unitIndex < aliveChickens.Count; unitIndex++)
{
if (IsStopping())
{
return(false);
}
var unit = aliveChickens[unitIndex];
_moveInfoStates[unit] = MoveInfoStates.Handled;
var moveInfo = _moveInfos.GetValueOrDefault(unit);
if (moveInfo == null)
{
continue;
}
DebugHelper.WriteLine(
"{0} is processing move {{{1}}} of chicken {{{2}}}.",
GetType().Name,
moveInfo,
unit);
var movementAndNewPosition = GameHelper.GetMovementAndNewPosition(
unit.Position,
unit.BeakAngle,
moveInfo.MoveDirection,
GameConstants.ChickenUnit.DefaultRectilinearSpeed);
var beakMovementAndNewAngle = GameHelper.GetBeakMovementAndNewAngle(unit.BeakAngle, moveInfo.BeakTurn);
var newPositionElement = new ChickenElement(
movementAndNewPosition.Position,
beakMovementAndNewAngle.Position);
if (HasOutOfBoardCollision(newPositionElement))
{
_moveInfoStates[unit] = MoveInfoStates.RejectedBoardCollision;
DebugHelper.WriteLine(
"Blocked collision of chicken {{{0}}} with game board border.",
unit);
continue;
}
ChickenUnit conflictingChicken = null;
// ReSharper disable once LoopCanBeConvertedToQuery
// ReSharper disable once ForCanBeConvertedToForeach
for (var conflictingIndex = 0; conflictingIndex < aliveChickens.Count; conflictingIndex++)
{
var aliveChicken = aliveChickens[conflictingIndex];
if (aliveChicken == unit)
{
continue;
}
if (CollisionDetector.CheckCollision(newPositionElement, aliveChicken.GetElement()))
{
conflictingChicken = aliveChicken;
break;
}
}
if (conflictingChicken != null)
{
_moveInfoStates[unit] = MoveInfoStates.RejectedOtherUnitCollision;
DebugHelper.WriteLine(
"Blocked collision of chicken {{{0}}} with {{{1}}}.",
unit,
conflictingChicken);
continue;
}
unit.SetMovement(movementAndNewPosition.Movement, beakMovementAndNewAngle.Movement);
DebugHelper.WriteLine("Chicken {{{0}}} has moved.", unit);
}
return(true);
}
