public void SignIn(Entity entity)
{
if (entity != null)
{
entity.OnActivStateChanged += Entity_OnActivStateChanged;
if (entity.IsActiv)
{
entities.Add(entity);
}
if (entity is CollidAble)
{
if (entity.IsActiv)
{
CollidAble collidableEnt = entity as CollidAble;
collidAbleEntities.Add(collidableEnt);
CollisionDetection.ActivCollisionDetection.SignIn(collidableEnt);
}
}
if (entity is DrawAble)
{
DrawAble drawAble = entity as DrawAble;
drawAble.OnVisabillityChanged += DrawAble_OnVisabillityChanged;
if (drawAble.IsVisable)
{
drawAbleEntities.Add(drawAble);
}
}
}
}
public CollisionGrid[] UpdateGrids(CollidAble collidable)
{
List <CollisionGrid> newGrids = CheckGridIntersections(collidable);
List <int> alreadyExists = new List <int>();
//Remove
for (int i = 0; i < collidable.Grids.Length; i++)
{
if (!newGrids.Contains(collidable.Grids[i]))
{
collidable.Grids[i].CollisionObjects.Remove(collidable);
}
else
{
alreadyExists.Add(i);
}
}
//Add
for (int i = 0; i < newGrids.Count; i++)
{
if (!alreadyExists.Contains(i))
{
newGrids[i].CollisionObjects.Add(collidable);
}
}
return(newGrids.ToArray());
}
public void SignOut(CollidAble collidable)
{
if (collidable != null)
{
collisionObjects.Remove(collidable);
if (collidable.Grids != null)
{
for (int i = 0; i < collidable.Grids.Length; i++)
{
collidable.Grids[i].CollisionObjects.Remove(collidable);
}
}
}
}
private List <CollisionGrid> CheckGridIntersections(CollidAble collidable)
{
List <CollisionGrid> collisions = new List <CollisionGrid>();
for (int i = 0; i < grids.Length; i++)
{
if (collidable.CollisionBox.Intersects(grids[i].CollisionBox))
{
collisions.Add(grids[i]);
}
}
return(collisions);
}
public void SignOut(Entity entity)
{
if (entity != null)
{
entities.Remove(entity);
if (entity is DrawAble)
{
drawAbleEntities.Remove(entity as DrawAble);
}
if (entity is CollidAble)
{
CollidAble col = entity as CollidAble;
collidAbleEntities.Remove(col);
CollisionDetection.ActivCollisionDetection.SignOut(col);
}
}
}
public List <CollidAble> CheckCollision(CollidAble collidable)
{
CollisionGrid[] grids = collidable.Grids;
List <CollidAble> collisions = new List <CollidAble>();
for (int i = 0; i < grids.Length; i++)
{
for (int j = 0; j < grids[i].CollisionObjects.Count; j++)
{
if (collidable != grids[i].CollisionObjects[j])
{
if (collidable.CollisionBox.Intersects(grids[i].CollisionObjects[j].CollisionBox))
{
collisions.Add(grids[i].CollisionObjects[j]);
}
}
}
}
return(collisions);
}
public CollisionGrid[] SignIn(CollidAble collidable)
{
if (collidable != null)
{
if (!collisionObjects.Contains(collidable))
{
collisionObjects.Add(collidable);
}
List <CollisionGrid> grids = CheckGridIntersections(collidable);
for (int i = 0; i < grids.Count; i++)
{
grids[i].CollisionObjects.Add(collidable);
}
collidable.Grids = grids.ToArray();
return(grids.ToArray());
}
return(null);
}
private void Entity_OnActivStateChanged(object sender, System.EventArgs e)
{
Entity ent = sender as Entity;
if (ent != null)
{
if (ent.IsActiv)
{
if (!entities.Contains(ent))
{
entities.Add(ent);
}
if (ent is CollidAble)
{
CollidAble collidableEnt = ent as CollidAble;
if (!collidAbleEntities.Contains(collidableEnt))
{
collidAbleEntities.Add(collidableEnt);
CollisionDetection.ActivCollisionDetection.SignIn(collidableEnt);
}
}
}
else
{
entities.Remove(ent);
if (ent is CollidAble)
{
CollidAble collidableEnt = ent as CollidAble;
collidAbleEntities.Remove(collidableEnt);
CollisionDetection.ActivCollisionDetection.SignOut(collidableEnt);
}
}
}
}
public void DoCollisionCheck(bool triggered = false, CollidAble collidable = null)
{
if (IsActiv)
{
List <CollidAble> collisions;
List <int> alreadyExists = new List <int>();
if (!triggered)
{
grids = CollisionDetection.ActivCollisionDetection.UpdateGrids(this);
collisions = CollisionDetection.ActivCollisionDetection.CheckCollision(this);
}
else
{
collisions = new List <CollidAble>();
collisions.Add(collidable);
}
if (OnCollisionExit != null || OnTriggerExit != null)
{
for (int i = 0; i < previouseCollisions.Length; i++)
{
if (!collisions.Contains(previouseCollisions[i]))
{
if (blocking && previouseCollisions[i].blocking)
{
OnCollisionExit?.Invoke(previouseCollisions[i], new CollisionArgs(previouseCollisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
else
{
OnTriggerExit?.Invoke(previouseCollisions[i], new CollisionArgs(previouseCollisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
}
else
{
alreadyExists.Add(i);
}
}
}
for (int i = 0; i < collisions.Count; i++)
{
if (!alreadyExists.Contains(i))
{
if (blocking && collisions[i].blocking)
{
OnCollisionEnter?.Invoke(collisions[i], new CollisionArgs(collisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
else
{
OnTriggerEnter?.Invoke(collisions[i], new CollisionArgs(collisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
}
else
{
if (blocking && collisions[i].blocking)
{
OnCollision?.Invoke(collisions[i], new CollisionArgs(collisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
else
{
OnTrigger?.Invoke(collisions[i], new CollisionArgs(collisions[i]));
if (!triggered)
{
collisions[i].DoCollisionCheck(true, this);
}
}
}
}
}
}
public CollisionArgs(CollidAble collisionObject)
{
CollisionObject = collisionObject;
}