public override bool IsActive(Microsoft.Xna.Framework.GameTime gameTime, Levels.Level level)
{
if (Entity.IsDead)
{
return(false);
}
if (Following != null)
{
if (MaxDistance != null)
{
var distance = new Vector2(Following.CenterPosition.X - Entity.CenterPosition.X, Following.CenterPosition.Y - Entity.CenterPosition.Y).Length();
if (distance > MaxDistance)
{
Following.GetBehavior <ChainBehavior <T> >().FollowedBy = null;
Following = null;
}
}
if (Following != null && (Following.IsDead || !level.ContainsEntity(Following)))
{
Following.GetBehavior <ChainBehavior <T> >().FollowedBy = null;
Following = null;
}
}
if (Following == null)
{
Following = (from ent in level.GetEntities <T>()
where ent != Entity && !ent.IsDead && level.ContainsEntity(ent)
let beh = ent.GetBehavior <ChainBehavior <T> >()
where beh != null && beh.FollowedBy == null && !beh.IsFollowingEntity(Entity)
let pos = new Vector2(Entity.CenterPosition.X - ent.CenterPosition.X,
Entity.CenterPosition.Y - ent.CenterPosition.Y)
let distance = pos.Length()
where MaxDistance == null || distance < MaxDistance
orderby distance
select ent).FirstOrDefault();
if (Following != null)
{
Following.GetBehavior <ChainBehavior <T> >().FollowedBy = Entity;
}
}
return(Following != null);
}
public override void Update(Microsoft.Xna.Framework.GameTime gameTime, Levels.Level level)
{
if (_attackedBy == null || !level.ContainsEntity(_attackedBy) || _attackedBy.IsDead || _attackTime + _hitAttackerTime < gameTime.TotalGameTime)
{
foreach (var beh in Entity.Behaviors.SelectMany(l => l.Value.OfType <AttackBehavior>()))
{
if (beh.OverrideTarget == _attackedBy)
{
beh.OverrideTarget = null;
}
}
_attackedBy = null;
}
}
public override void Update(GameTime gameTime, Levels.Level level)
{
if (CurrentDirection != Vector2.Zero)
{
Angle = (float)(Math.Atan2(-CurrentDirection.X, CurrentDirection.Y) + _spriteAngle);
}
_timeFromCreation += gameTime.ElapsedGameTime;
if (level.Map.Collides(CollisionRect, false, true) && CurrentDirection != Vector2.Zero)
{
if (level.Map.IsOutsideBorders(CollisionRect))
{
level.RemoveEntity(this);
}
else
{
Dettach(level, removeFromLevel: Parent == null || Parent.Category != "Player");
}
return;
}
if (HitEntity != null)
{
if (gameTime.TotalGameTime > _entHitTime + _maxHitTime || !level.ContainsEntity(HitEntity))
{
Dettach(level, HitEntity.Arrows == null || HitEntity.Health <= 0);
}
else
{
Position = HitEntity.CenterPosition - _hitLocation;
}
return;
}
if (Parent != null)
{
var timeFactor = gameTime.ElapsedGameTime.TotalMilliseconds / 1000;
Position += CurrentDirection * (float)timeFactor * Speed;
}
foreach (var ent in level.CollidesWith(CollisionRect).Distinct())
{
if (Parent == null)
{
if (ent.Arrows != null && ent.Arrows.Quantity < ent.Arrows.Maximum)
{
ent.Arrows.Quantity += PickupCount;
level.RemoveEntity(this);
}
return;
}
if (ent != this && ent != Parent && ent.Health != null)
{
_entHitTime = gameTime.TotalGameTime;
HitEntity = ent;
var direction = VectorHelper.AngleToV2(Angle, 5);
direction = new Vector2(-direction.Y, direction.X);
ent.Hit(this, gameTime, level, direction);
_hitLocation = ent.CenterPosition - Position - CurrentDirection;
return;
}
}
}