protected FDMovePath DecidePositionAndPath(FDPosition targetPos)
{
DistanceResolver disResolver = new DistanceResolver(this.GameAction.GetField());
disResolver.ResolveDistanceFrom(targetPos, this.Creature.Position);
FDPosition originalPos = this.Creature.Position;
float bestDistance = 999;
int bestDistanceInUnit = -1;
bool inAttackScope = false;
MoveRangeFinder finder = new MoveRangeFinder(this.GameAction, this.Creature);
FDMoveRange moveRange = finder.CalculateMoveRange();
FDSpan span = null;
FDPosition finalPos = originalPos;
if (this.GameAction.GetCreatureAt(targetPos) != null)
{
span = Creature.Data.GetAttackItem()?.AttackScope;
}
else
{
span = new FDSpan(0, 0);
}
foreach (FDPosition movePos in moveRange.Positions)
{
int distanceToTarget = GetDirectDistance(targetPos, movePos);
if (span.ContainsValue(distanceToTarget))
{
inAttackScope = true;
if (distanceToTarget > bestDistanceInUnit)
{
bestDistanceInUnit = distanceToTarget;
finalPos = movePos;
}
}
if (!inAttackScope)
{
float distance = disResolver.GetDistanceTo(movePos);
if (distance < bestDistance)
{
bestDistance = distance;
finalPos = movePos;
}
}
}
return(moveRange.GetPath(finalPos));
}
private void WalkOnPosition(FDPosition position, int leftMovePoint, FDMoveRange range)
{
int moveCost = GetMoveCost(position, creature);
if (moveCost == -1 || leftMovePoint < moveCost)
{
// Nothing to walk
return;
}
// If this is ZOC, stop the move
if (!position.AreSame(this.creature.Position) && HasAdjacentEnemy(position))
{
return;
}
int leftPoint = leftMovePoint - moveCost;
foreach (FDPosition direction in position.GetAdjacentPositions())
{
if (direction.X <= 0 || direction.X > gameField.Width ||
direction.Y <= 0 || direction.Y > gameField.Height)
{
continue;
}
if (range.Contains(direction))
{
continue;
}
// If already occupied by creature
FDCreature existing = gameAction.GetCreatureAt(direction);
if (existing != null && existing.IsOppositeFaction(creature))
{
continue;
}
if (GetMoveCost(direction, creature) == -1)
{
// Cannot land on target direction
continue;
}
range.AddPosition(direction, position);
positionQueue.Enqueue(new MoveRangeQueueObject(direction, leftPoint));
}
}
public FDMoveRange CalculateMoveRange()
{
FDPosition central = this.creature.Position;
FDMoveRange range = new FDMoveRange(central);
int movePoint = creature.Data.CalculatedMv;
positionQueue = new Queue <MoveRangeQueueObject>();
range.AddPosition(central, null);
positionQueue.Enqueue(new MoveRangeQueueObject(central, movePoint));
while (positionQueue.Count > 0)
{
MoveRangeQueueObject queueObject = positionQueue.Dequeue();
WalkOnPosition(queueObject.Position, queueObject.LeftMovePoint, range);
}
// Remove the friend creatures from range
List <FDCreature> creatureInRange = gameAction.GetCreatureInRange(range, creature.Faction);
if (creature.Faction == CreatureFaction.Friend)
{
creatureInRange.AddRange(gameAction.GetCreatureInRange(range, CreatureFaction.Npc));
}
else if (creature.Faction == CreatureFaction.Npc)
{
creatureInRange.AddRange(gameAction.GetCreatureInRange(range, CreatureFaction.Friend));
}
foreach (FDCreature c in creatureInRange)
{
if (c.CreatureId == creature.CreatureId)
{
continue;
}
range.AddSkipPosition(c.Position);
}
return(range);
}
public override void OnEnter()
{
base.OnEnter();
// Calculcate the moving scopes and save it in cache
if (moveRange == null)
{
MoveRangeFinder finder = new MoveRangeFinder(gameAction, this.creature);
moveRange = finder.CalculateMoveRange();
}
// If the creature has moved, reset the creature position
this.creature.ResetPosition();
CreatureRefreshPack reset = new CreatureRefreshPack(this.creature.Clone());
SendPack(reset);
ShowRangePack showRange = new ShowRangePack(moveRange);
SendPack(showRange);
}