public override IEnumerable <RunStatus> Execute(object context)
{
BTAIContext ctx = context as BTAIContext;
var tc = ctx.Entity.GetComponent <ThingComp>();
var tcc = ctx.Entity.GetComponent <ThingControlComp>();
// only attack if not blocked there.
List <Entity> col = tc.DetectCollisions(ctx.Entity, tc.FacingDirection);
foreach (Entity e in col)
{
var tc2 = e.GetComponent <ThingComp>();
if (tc2.Faction != tc.Faction && tc2.Faction != Faction.NEUTRAL)
{
IsAttacking = true;
tcc.TargetMove = tc.FacingDirection;
tcc.DeltaTimeBetweenMoves = this.DeltaTimeBetweenMoves;
// TODO color set! and health decrease values parameterize.
Level.Current.Subtitles.Show(3, AttackStrings[RandomMath.RandomIntBetween(0, AttackStrings.Length - 1)], 3.5f, tc.Color);
ctx.Entity.GetComponent <HealthComp>().DecreaseHealth(RandomMath.RandomBetween(1f, 3f));
yield return(RunStatus.Success);
yield break;
}
}
yield return(RunStatus.Failure);
}
public override IEnumerable <RunStatus> Execute(object context)
{
BTAIContext ctx = context as BTAIContext;
// enable, or keep alive, the random wander comp.
var rwc = ctx.Entity.GetComponent <RandomWanderComp>();
ctx.BTComp.EnableComp(rwc);
// take the computed move and apply to the move of this Thing
var tcc = ctx.Entity.GetComponent <ThingControlComp>();
tcc.TargetMove = rwc.TargetMove;
tcc.DeltaTimeBetweenMoves = this.DeltaTimeBetweenMoves;
yield return(RunStatus.Success);
}
public override IEnumerable <RunStatus> Execute(object context)
{
BTAIContext ctx = context as BTAIContext;
// time keeping
timeSinceLastChange += ctx.Dt;
// direction changing
if (timeSinceLastChange >= dirChangeTime)
{
timeSinceLastChange = 0f;
// TODO: define a double functino also
dirChangeTime = (double)RandomMath.RandomBetween((float)MinDirectionChangeTime, (float)MaxDirectionChangeTime);
// TODO: length-preservation in VelocityComp
Vector3 v = ctx.Entity.GetComponent <VelocityComp>().Velocity;
CurrentDirection = RandomMath.RandomDirection() * v.Length();
OnExecute(ctx);
}
yield return(RunStatus.Success);
}
/// <summary>
/// the external execution of the behavior, can be overridden. Default implementation sets the
/// new CurrentDirection into VelocityComp of the Entity
/// </summary>
/// <param name="context">BT Entity/processing information</param>
protected virtual void OnExecute(BTAIContext context)
{
context.Entity.GetComponent <VelocityComp>().Velocity = new Vector3(CurrentDirection.X, CurrentDirection.Y, 0f);
}