/// <summary>
/// Loops through each Poisoned Entity and applies poison damage. If the poison has expired, then
/// the Poison Component is removed from the Entity.
/// </summary>
public override void Process()
{
/// <summary>
/// The System where Attacks are registered.
/// </summary>
DamageSystem damageSystem = World.GetSystem <DamageSystem>();
if (ReadyToApplyPoison(_lastTick, _tickInterval))
{
_lastTick = World.GameTime;
CPoison poison;
for (int i = 0; i < Entities.Count; i++)
{
poison = World.GetComponent <CPoison>(Entities[i]);
if (!Utils.DurationReached(poison.TimeApplied, poison.Duration))
{
damageSystem.RegisterAttack(Entities[i], poison.Strength);
}
else
{
World.RemoveComponent <CPoison>(Entities[i]);
}
}
}
}
/// <summary>
/// Performs an Attack for the specified Entity. The Entity's
/// attack Type is evaluated and the appropriate attack is performed.
/// </summary>
/// <param name="entID">The Attacking Entity.</param>
/// <typeparam name="T">The Team the Entity belongs to.</typeparam>
protected void Attack <T>(ulong entID) where T : CTeam
{
CAI AI = World.GetComponent <CAI>(entID);
CDamage damage;
CPosition pos;
CPosition targetPos;
/// <summary>
/// The AI has just attacked, so its cooldown is started.
/// </summary>
AI.LastAttackTime = World.GameTime;
AI.AttackIsReady = false;
/// <summary>
/// If the Attack Type is Melee, register an attack with the Damage System.
/// If the Attack Type is Gun, create an Arrow Entity to travel towards the Target.
/// </summary>
switch (AI.AttackType)
{
case AttackType.Melee:
{
/// <summary>
/// The System where Attacks are registered.
/// </summary>
DamageSystem damageSystem = World.GetSystem <DamageSystem>();
damage = World.GetComponent <CDamage>(entID);
damageSystem.RegisterAttack(AI.TargetID, damage.Damage);
break;
}
case AttackType.Bow:
{
pos = World.GetComponent <CPosition>(entID);
CBow bow = World.GetComponent <CBow>(entID);
targetPos = World.GetComponent <CPosition>(AI.TargetID);
EntityFactory.CreateArrow <T>(pos.Centre.X, pos.Centre.Y, bow, targetPos);
break;
}
}
}
/// <summary>
/// Checks the collisions of each Entity which deals damage on impact. If it has collided with something containing a Health Component,
/// an Attack is registered with the Damage System.
/// </summary>
public override void Process()
{
/// <summary>
/// The System where Attacks are registered.
/// </summary>
DamageSystem damageSystem = World.GetSystem <DamageSystem>();
for (int i = Entities.Count - 1; i >= 0; i--)
{
CDamage damage;
CCollision collision;
CDamagesOnImpact dmgOnImp;
collision = World.GetComponent <CCollision>(Entities[i]);
/// <summary>
/// Apply damage to the first Entity the Entity has collided with that still exists in
/// the World and also has a Health Component. If none are found, the Arrow remains live.
/// </summary>
for (int j = 0; j < collision.Count; j++)
{
if (World.HasEntity(collision[j]))
{
if (World.EntityHasComponent(collision[j], typeof(CHealth)))
{
damage = World.GetComponent <CDamage>(Entities[i]);
damageSystem.RegisterAttack(collision[j], damage.Damage);
}
}
}
/// <summary>
/// If the Entity is set to die after impact, remove it from the World.
/// </summary>
dmgOnImp = World.GetComponent <CDamagesOnImpact>(Entities[i]);
if (dmgOnImp.DiesAfterImpact)
{
World.RemoveEntity(Entities[i]);
}
}
}
