/// <summary>
/// Checks if target is out of range, handles reload timer, rotates tower towards target and calls Fire function
/// </summary>
/// <param name="gameTime"></param>
/// <param name="level"></param>
public virtual void Update(GameTime gameTime, Level level)
{
if (target != null)
{
if (Vector2.Distance(position, target.projTargetPosition) > range)
{
target = null;
}
}
if (!readyToFire)
{
timer += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (timer >= reloadTime)
{
readyToFire = true;
}
}
if (target != null)
{
direction = target.projTargetPosition - position;
direction.Normalize();
rotationAngle = (float)Math.Atan2(direction.Y, direction.X);
if (readyToFire && target.CurrentHealth > 0)
{
Fire(level);
}
if (target.CurrentHealth <= 0)
{
target = null;
}
}
}
/// <summary>
/// Projectile is created after a Tower shot
/// </summary>
/// <param name="texture"></param>
/// <param name="explosionTexture"></param>
/// <param name="speed"></param>
/// <param name="damage"></param>
/// <param name="hasSplash"></param>
/// <param name="position"></param>
/// <param name="target"></param>
/// <param name="canSlow"></param>
/// <param name="level"></param>
public Projectile(Texture2D texture, Texture2D explosionTexture, float speed, float damage, bool hasSplash, Vector2 position, Enemys target, bool canSlow, Level level)
{
this.texture = texture;
this.explosionTexture = explosionTexture;
this.speed = speed;
this.damage = damage;
this.hasSplash = hasSplash;
this.position = position;
this.target = target;
this.canSlow = canSlow;
this.level = level;
hit = false;
speedModifier = 0.5f;
speedModifierDuration = 1.9f;
rotationCenter = new Vector2(texture.Width / 2, texture.Height / 2);
}
/// <summary>
/// Spawns enemys until the desired number of enemys is spawned
/// </summary>
/// <param name="texture"></param>
private void SpawnEnemy(Texture2D texture)
{
Enemys enemy = new Enemys(player, texture, spawnPosition, enemyLife, enemyBounty, enemySpeed, graphicsDevice);
enemy.SetWaypoints(level.Waypoints);
level.AddEnemy(enemy);
countEnemys++;
timerEnemys = 0;
if (countEnemys >= nrToSpawn)
{
countEnemys = 0;
spawnNewEnemys = false;
timerWaves = 0;
stopTimer = false;
}
}
/// <summary>
/// Checks if an Enemy is insider an Explosion
/// </summary>
/// <param name="enemy"></param>
public void CheckIfInsideExplosion(Enemys enemy)
{
if (hasSplash)
{
if (enemy.Position.X < pos.X + texture.Width &&
enemy.Position.X > pos.X - texture.Height &&
enemy.Position.Y < pos.Y + texture.Height &&
enemy.Position.Y > pos.Y - texture.Height)
{
enemy.CurrentHealth -= damage;
if (canSlow)
{
enemy.SpeedModifier = speedModifier;
enemy.ModifierDuration = speedModifierDuration;
}
}
}
}
/// <summary>
/// Add enemy to the list enemyList.
/// </summary>
/// <param name="enemys"></param>
public void AddEnemy(Enemys enemys)
{
enemyList.Add(enemys);
}