/// <summary>
/// Decorates the base idle movement behaviour with other movement behaviours
/// appropriate to the character and situation.
/// </summary>
public void GenerateMovementBehaviours()
{
movementBehaviour = new IdleMovementBehaviour();
GenerateFleeBehaviours();
GenerateSeekBehaviour();
movementBehaviour = new AvoidMovementBehaviour(movementBehaviour, gameObject, null, GameManager.GameSettings.Constants.Range.AvoidRadius);
}
/// <summary>
/// Generates movement behaviours to avoid all other characters. Avoid in this sense
/// means they will not move on top of them.
/// </summary>
protected void GenerateFleeBehaviours()
{
var charactersToAvoid = GameManager.AllCharactersExcept(character);
foreach (var character in charactersToAvoid)
{
movementBehaviour = new FleeMovementBehaviour(
movementBehaviour, gameObject, character.gameObject, GameManager.GameSettings.Constants.Range.FleeRadius);
}
}
/// <summary>
/// Base constructor for movement decorators.
/// </summary>
/// <param name="movementBehaviour">The movement behaviour to decorate.</param>
/// <param name="agent">The GameObject that desires this movement behaviour.</param>
/// <param name="target">The target of this movement behaviour.</param>
public AbstractMovementDecorator(AbstractMovementBehaviour movementBehaviour,
GameObject agent, GameObject target, float radius)
{
this.movementBehaviour = movementBehaviour;
this.agent = agent;
this.controller = agent.GetComponent <MovementController>();
this.maxSpeed = controller.MaxSpeed;
this.maxAccel = GameManager.GameSettings.Constants.Character.Acceleration;
this.target = target;
this.radius = radius;
}
// Update is called once per frame
void FixedUpdate()
{
if (movementBehaviour == null)
{
movementBehaviour = new IdleMovementBehaviour();
movementBehaviour = new SeekMovementBehaviour(movementBehaviour, gameObject, seekTarget, seekRadius);
movementBehaviour = new FleeMovementBehaviour(movementBehaviour, gameObject, avoidTarget, avoidRadius);
movementBehaviour = new FleeMovementBehaviour(movementBehaviour, gameObject, avoidTarget2, avoidRadius);
movementBehaviour = new FleeMovementBehaviour(movementBehaviour, gameObject, avoidTarget3, avoidRadius);
}
var newPosition = movementBehaviour.Steering().normalized *controller.MaxSpeed;
transform.Translate(newPosition);
}
/// <summary>
/// Generates movement behaviour to seek the current target.
/// </summary>
protected virtual void GenerateSeekBehaviour()
{
try
{
if (character.CombatController.TargetController != null)
{
var squareDistance = transform.position.SqrDistance(character.CombatController.TargetController.transform.position);
if (squareDistance > SeekTargetDistanceSquared)
{
var targetLocation = character.CombatController.TargetController.transform.position;
var location = targetLocation + ((transform.position - targetLocation).normalized * SeekTargetDistance);
movementBehaviour = new WalkMovementBehaviour(
movementBehaviour, gameObject, location, SeekTargetDistance);
}
}
else if (character.CombatController.TargetController == null)
{
// Have allies walk back to hero when they don't have a target.
if (character.CharacterType == CharacterType.Ally) //TODO: Make this more generic.
{
var squareDistance = transform.position.SqrDistance(GameManager.Hero.Location);
if (squareDistance > SeekTargetDistanceSquared)
{
var location = GameManager.Hero.Location +
((transform.position - GameManager.Hero.Location).normalized * SeekTargetDistance);
movementBehaviour = new WalkMovementBehaviour(
movementBehaviour, gameObject, location, SeekTargetDistance);
}
}
}
}
catch (NullReferenceException)
{
character = GetComponent <GameCharacterController>();
}
}
/// <summary>
/// Constructor for AvoidMovementBehaviour instances.
/// </summary>
/// <param name="movementBehaviour">The movement behaviour to decorate.</param>
/// <param name="agent">The GameObject that desires this movement behaviour.</param>
/// <param name="target">The target of this movement behaviour.</param>
/// <param name="radius">The radius at which this behaviour is completed.</param>
public AvoidMovementBehaviour(AbstractMovementBehaviour movementBehaviour, GameObject agent, GameObject target, float radius)
: base(movementBehaviour, agent, target, radius)
{
}
/// <summary>
/// Constructor for WanderMovementBehaviour instances.
/// </summary>
/// <param name="movementBehaviour">The movement behaviour to decorate.</param>
/// <param name="agent">The GameObject that desires this movement behaviour.</param>
/// <param name="location">The original location from which the agent will wander.</param>
/// <param name="radius">The radius at which this behaviour will wander.</param>
public WanderMovementBehaviour(AbstractMovementBehaviour movementBehaviour, GameObject agent, Vector2 location, float radius)
: base(movementBehaviour, agent, null, radius)
{
}
