/// <summary>
/// Apply damage to the Health.
/// </summary>
/// <param name="dmg">The damage to apply.</param>
/// <returns>The actual damage amount dealt.</returns>
public virtual float Damage(Damage dmg)
{
if (enabled && dmg.amount > 0 && hitInvulnTimer.Use())
{
DamageModifier?.Invoke(ref dmg);
float prevHealth = health;
health -= dmg.amount;
health = Mathf.Max(health, 0);
dmg.amount = prevHealth - health;
healthRegenTimer.Set();
SendMessage("OnDamage", dmg, SendMessageOptions.DontRequireReceiver);
Damaged?.Invoke(dmg);
if (damageSound)
{
damageSound.Play();
}
if (health == 0 && !dead)
{
dead = true;
SendMessage("OnZeroHealth", SendMessageOptions.DontRequireReceiver);
ZeroHealth?.Invoke();
}
}
else
{
dmg.amount = 0;
}
return(dmg.amount);
}
private void HandleHealthChange(bool fireZeroHealthEvent = true)
{
healthChanged?.Invoke(_currentHealth, _maxHealth);
if (fireZeroHealthEvent && _currentHealth <= 0 && !_zeroHealthEventFired)
{
zeroHealth?.Invoke();
_zeroHealthEventFired = true;
}
}
public void ChangeHealth(IDamageDealer changer, double damage)
{
if (!IsVulnerable)
{
return;
}
if (owner is EnemySystem enemy)
{
enemy.LastDamageDealer = changer;
if (enemy.Data.Get(Enums.Enemy.Health).AppliedValue > 0)
{
enemy.Data.Get(Enums.Enemy.Health).AppliedValue -= damage;
}
else
{
enemy.Data.Get(Enums.Enemy.Health).Value -= damage;
}
var remainingHealth =
enemy.Data.Get(Enums.Enemy.Health).AppliedValue > 0 ?
enemy.Data.Get(Enums.Enemy.Health).AppliedValue :
enemy.Data.Get(Enums.Enemy.Health).Value;
if (remainingHealth <= 0)
{
GiveResources();
IsVulnerable = false;
ZeroHealth?.Invoke(owner);
}
}
#region Helper functions
void GiveResources()
{
if (enemy.LastDamageDealer is SpiritSystem spirit)
{
spirit.AddExp((int)enemy.Data.Get(Numeral.Exp).Sum);
}
}
#endregion
}