public void Process(GameTime gameTime)
{
//Always updates the closest enemy, used for setting target
closestObject = MathFunctions.ReturnClosestObject(ship, ship.SightRange,
Game.stateManager.shooterState.gameObjects, "enemy");
if (target == null)
{
behaviour.SetTarget(closestObject);
}
else
{
targetYDistance = ship.BoundingY - (target.BoundingY + target.BoundingHeight);
targetXDistance = ship.PositionX - (target.BoundingX + target.BoundingWidth);
if (targetXDistance < 0)
{
targetXDistance *= -1;
}
//Removes target when dead or too far from AI-controlled ship
if (target.IsOutside || target.IsKilled || targetYDistance < -100 || targetXDistance > 400)
{
if (Behaviour.IgnoreList.Contains(target))
{
Behaviour.GarbageIgnoreList.Add(target);
Behaviour.UpdateIgnoreList();
}
target = null;
}
}
//Calls the behaviour and asks which action to take
behaviour.Action();
}
public void Avoid()
{
foreach (GameObjectVertical obj in Game.stateManager.shooterState.gameObjects)
{
if (obj.ObjectClass == "enemy" || obj.ObjectClass == "enemyBullet")
{
if (CollisionDetection.IsPointInsideCircle(obj.Position, ship.Position, AvoidRadius))
{
AvoidList.Add(obj);
}
}
}
if (AvoidList.Count > 0)
{
objToAvoid = MathFunctions.ReturnClosestObject(ship, AvoidRadius, AvoidList);
}
if (objToAvoid == target)
{
Behaviour.GarbageIgnoreList.Add(target);
Behaviour.UpdateIgnoreList();
target = null;
}
if (AvoidList.Count > 0 && objToAvoid != null)
{
//enemy is to the right on AI-ship's center
if (objToAvoid.BoundingX + objToAvoid.BoundingWidth >= ship.PositionX &&
objToAvoid.BoundingX - 20 < ship.PositionX + ship.CenterPointX)
{
if (ship.BoundingX > (Game1.ScreenSize.X - Game.stateManager.shooterState.CurrentLevel.LevelWidth) / 2 + 20)
{
ship.Move(new Vector2(-1, ship.DirectionY));
}
}
else if (objToAvoid.BoundingX < ship.PositionX &&
objToAvoid.BoundingX + objToAvoid.BoundingWidth + 20 > ship.BoundingX)
{
if (ship.BoundingX + ship.BoundingWidth < Game.stateManager.shooterState.CurrentLevel.LevelWidth - 20)
{
ship.Move(new Vector2(1, ship.DirectionY));
}
}
else
{
ship.Stop("x");
}
}
for (int i = 0; i < AvoidList.Count; i++)
{
if (AvoidList[i].IsKilled || AvoidList[i].IsOutside ||
!CollisionDetection.IsPointInsideCircle(AvoidList[i].Position, ship.Position, AvoidRadius))
{
GarbageAvoidList.Add(AvoidList[i]);
if (objToAvoid == AvoidList[i])
{
objToAvoid = null;
}
}
}
foreach (GameObjectVertical obj in GarbageAvoidList)
{
AvoidList.Remove(obj);
}
GarbageAvoidList.Clear();
}
