public void getClosestEnemy(List<Enemy> enemies)
{
if (enemies != null)
{
if (enemies.Count > 0)
{
_targetEnemy = null;
float minDis = _range;
int minIndex = 0;
for (int i = 0; i < enemies.Count; i++)
{
float dis = Vector2.Distance(new Vector2((float)_sprite.Left, (float)_sprite.Top),
new Vector2((float)enemies[i].Sprite.Left, (float)enemies[i].Sprite.Top));
if (dis < minDis && !enemies[i].Kind.Equals("ball"))
{
minDis = dis;
minIndex = i;
}
}
_targetEnemy = enemies[minIndex];
}
}
}
public override void Update(GameTime gameTime)
{
base.Update(gameTime);
timer += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (_targetEnemy != null)
{
FaceTarget();
if (!isInRange(new Vector2((float)(TargetEnemy.Sprite.Left + Global.CELL_WIDTH/2), (float)(TargetEnemy.Sprite.Top + Global.CELL_HEIGHT/2))) || _targetEnemy.isDead)
{
_targetEnemy = null;
timer = 0;
}
}
if (first == 0 && _targetEnemy != null)
{
Arrow arrow = ArrowManager.CreateArrow(0);
arrow.Position = new Vector2((float)this.sprite.Left + sprite.Texture.Width / 2, (float)this.sprite.Top + sprite.Texture.Height / 2);
arrow.Rotation = _rotation;
arrow.Sprite.Rotation = _rotation;
arrow.IsFired = true;
if (Global.SOUNDEFFECT_ENABLE)
SoundManager.so_arrowSound.Play();
arrows.Add(arrow);
first++;
}
if (timer >= (_arrowTime/ Global.GAME_SPEED) && _targetEnemy !=null)
{
Arrow arrow = ArrowManager.CreateArrow(0);
arrow.Position = new Vector2((float)this.sprite.Left + sprite.Texture.Width / 2, (float)this.sprite.Top + sprite.Texture.Height / 2);
arrow.Rotation = _rotation;
arrow.Sprite.Rotation = _rotation;
arrow.IsFired = true;
if (Global.SOUNDEFFECT_ENABLE)
SoundManager.so_arrowSound.Play();
arrows.Add(arrow);
timer = 0;
}
for (int i=0; i<arrows.Count; i++)
{
Arrow arrow = arrows[i];
if (arrow.IsFired == false)
arrow.Rotation = _rotation;
arrow.Update(gameTime);
if (_targetEnemy != null && Vector2.Distance(new Vector2(arrow.Sprite.Left + arrow.Sprite.Texture.Width / 2, arrow.Sprite.Top + arrow.Sprite.Texture.Height / 2), new Vector2(_targetEnemy.Sprite.Left + Global.CELL_WIDTH / 2, _targetEnemy.Sprite.Top + Global.CELL_HEIGHT / 2)) < 25)
{
_targetEnemy.CurrentHealth -= arrow.Damage;
arrow.disappearArrow();
}
if (!isInRange(new Vector2((float)(arrow.Sprite.Left + arrow.Sprite.Texture.Width/2), (float)(arrow.Sprite.Top + arrow.Sprite.Texture.Height/2))))
{
arrow.disappearArrow();
}
if (arrow.isNotInRange())
{
arrows.Remove(arrow);
i--;
}
}
}
