/// <summary>
/// Registers a collision between two passed in Entities by adding a
/// reference to the other Entity in its Collision Component. If the Entity
/// does not have a Collision Component, one is added.
/// </summary>
/// <param name="entOne">The first Entity in the collision.</param>
/// <param name="entTwo">The second Entity in the collision..</param>
private void RegisterCollision(ulong entOne, ulong entTwo)
{
CCollision entOneCollision;
CCollision entTwoCollision;
//Handle collision for the first Entity
if (!World.EntityHasComponent(entOne, typeof(CCollision)))
{
World.AddComponent(entOne, new CCollision(entTwo));
}
else
{
entOneCollision = World.GetComponent <CCollision>(entOne);
entOneCollision.AddCollision(entTwo);
}
//Handle collision for the second Entity
if (!World.EntityHasComponent(entTwo, typeof(CCollision)))
{
World.AddComponent(entTwo, new CCollision(entOne));
}
else
{
entTwoCollision = World.GetComponent <CCollision>(entTwo);
entTwoCollision.AddCollision(entOne);
}
}
public override void Process()
{
CCollision collision;
CFrozen freezeZoneFrozen;
CFrozen collidedFrozen;
List <int> deadFreezeEffects = new List <int>();
/// <summary>
/// This loop represents each Freeze Zone.
/// Backwards loop to allow Entities to be removed while looping.
/// </summary>
for (int i = Entities.Count - 1; i >= 0; i--)
{
freezeZoneFrozen = World.GetComponent <CFrozen>(Entities[i]);
collision = World.GetComponent <CCollision>(Entities[i]);
/// <summary>
/// This loop represents each Entity colliding with the Freeze Zone.
/// </summary>
for (int j = 0; j < collision.Count; j++)
{
//If not already Frozen, add a Frozen Component.
if (!World.EntityHasComponent(collision[j], typeof(CFrozen)))
{
//Don't freeze projectiles
if (!World.EntityHasComponent(collision[j], typeof(CProjectile)))
{
World.AddComponent(collision[j], new CFrozen(freezeZoneFrozen.Duration, World.GameTime));
}
if (!World.EntityHasComponent(collision[j], typeof(CGotStatusEffect)))
{
World.AddComponent(collision[j], new CGotStatusEffect(typeof(CFrozen)));
}
else
{
CGotStatusEffect statusEffects = World.GetComponent <CGotStatusEffect>(collision[j]);
statusEffects.AddEffect(typeof(CFrozen));
}
}
else //If already Frozen, refresh the duration.
{
collidedFrozen = World.GetComponent <CFrozen>(collision[i]);
collidedFrozen.TimeApplied = World.GameTime;
}
}
/// <summary>
/// Freeze Zone only lasts for one frame to apply Frozen Components.
/// Each Freeze Zone is removed from the World once its collisions are processed.
/// </summary>
World.RemoveEntity(Entities[i]);
}
}
/// <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]);
}
}
}
/// <summary>
/// Checks each Entity colliding with each Poison Zone. If the Entity does not have
/// a Poison Component, then a Poison Component and a GotStatusEffect Component are added.
/// Otherwise, the Entity's Poison Component duration is refreshed.
/// </summary>
public override void Process()
{
CPoison poisonEffect;
CPoison targetPoisonEffect;
CCollision collision;
/// <summary>
/// This loop represents each Poison Zone.
/// </summary>
for (int i = 0; i < Entities.Count; i++)
{
poisonEffect = World.GetComponent <CPoison>(Entities[i]);
collision = World.GetComponent <CCollision>(Entities[i]);
/// <summary>
/// This loop represents each Entity colliding with the Poison Zone.
/// </summary>
for (int j = 0; j < collision.Count; j++)
{
if (!World.EntityHasComponent(collision[j], typeof(CPoison)))
{
World.AddComponent(collision[j], new CPoison(poisonEffect.Strength, poisonEffect.Duration, World.GameTime));
if (!World.EntityHasComponent(collision[j], typeof(CGotStatusEffect)))
{
World.AddComponent(collision[j], new CGotStatusEffect(typeof(CPoison)));
}
else
{
CGotStatusEffect statusEffects = World.GetComponent <CGotStatusEffect>(collision[j]);
statusEffects.AddEffect(typeof(CPoison));
}
}
else //If entity already has a Poison Component, refresh its duration.
{
targetPoisonEffect = World.GetComponent <CPoison>(collision[j]);
targetPoisonEffect.TimeApplied = World.GameTime;
}
}
}
}
/// <summary>
/// Determines whether or not the passed in Entity meets the requirements of the System.
/// This checks against both the Include and Exclude Type Lists.
/// </summary>
/// <returns><c>true</c> if the Entity passes the filter, <c>false</c> otherwise.</returns>
/// <param name="entID">The Entity to check.</param>
public bool EntityPassesFilter(ulong entID)
{
//Check Entity has all components the System will operate on.
foreach (Type t in Include)
{
if (!World.EntityHasComponent(entID, t))
{
return(false);
}
}
//Check Entity does NOT have any components the System will NOT operate on.
foreach (Type t in Exclude)
{
if (World.EntityHasComponent(entID, t))
{
return(false);
}
}
//The Entity meets the requirements and will be added to the System.
return(true);
}
/// <summary>
/// Updates and Draws each Animation in each Entity's StatusAnimation Component.
/// If an Entity no longer has the required Component for the StatusAnimation, it
/// is removed from the StatusAnimations Component.
/// </summary>
public override void Process()
{
CStatusAnimations statusAnims;
CStatusAnimation anim;
CPosition pos;
/// <summary>
/// This loop represents each Entity with a Status Animations Component.
/// </summary>
for (int i = 0; i < Entities.Count; i++)
{
statusAnims = World.GetComponent <CStatusAnimations>(Entities[i]);
pos = World.GetComponent <CPosition>(Entities[i]);
/// <summary>
/// This loop represents each Status Animation inside the Status Animations Component.
/// Backwards loop to allow Status Animations to be removed while looping.
/// </summary>
for (int j = statusAnims.Anims.Count - 1; j >= 0; j--)
{
anim = statusAnims[j];
if (World.EntityHasComponent(Entities[i], anim.LinkedComponent))
{
float x = pos.X + anim.XOffset;
float y = pos.Y + anim.YOffset;
SwinGame.DrawAnimation(anim.Anim, anim.Img, x, y);
SwinGame.UpdateAnimation(anim.Anim);
}
else
{
statusAnims.Anims.RemoveAt(j);
}
}
}
}