public SingleTagRenderer(BitTag tag)
{
Tag = tag;
BlendState = BlendState.AlphaBlend;
SamplerState = SamplerState.LinearClamp;
Camera = new Camera();
}
/// <summary>
/// Quick access to entire tag lists of Entities. Result will never be null
/// </summary>
/// <param name="tag">The tag list to fetch</param>
/// <returns></returns>
public List <Entity> this[BitTag tag]
{
get
{
return(TagLists[tag.ID]);
}
}
public bool CollideDo(BitTag tag, Action <Entity> action, Vector2 at)
{
#if DEBUG
if (Scene == null)
{
throw new Exception("Can't collide check an Entity against a tag list when it is not a member of a Scene");
}
#endif
bool hit = false;
var was = Position;
Position = at;
foreach (var other in Scene[tag])
{
if (CollideCheck(other))
{
action(other);
hit = true;
}
}
Position = was;
return(hit);
}
public List <Entity> CollideAll(BitTag tag)
{
#if DEBUG
if (Scene == null)
{
throw new Exception("Can't collide check an Entity against a tag list when it is not a member of a Scene");
}
#endif
return(Collide.All(this, Scene[tag]));
}
public Entity CollideFirst(BitTag tag, Vector2 at)
{
#if DEBUG
if (Scene == null)
{
throw new Exception("Can't collide check an Entity against a tag list when it is not a member of a Scene");
}
#endif
return(Collide.First(this, Scene[tag], at));
}
public Entity CollideFirstOutside(BitTag tag, Vector2 at)
{
#if DEBUG
if (Scene == null)
{
throw new Exception("Can't collide check an Entity against a tag list when it is not a member of a Scene");
}
#endif
foreach (var entity in Scene[tag])
{
if (!Collide.Check(this, entity) && Collide.Check(this, entity, at))
{
return(entity);
}
}
return(null);
}
public Entity Closest(BitTag tag)
{
var list = Scene[tag];
Entity closest = null;
float dist;
if (list.Count >= 1)
{
closest = list[0];
dist = Vector2.DistanceSquared(Position, closest.Position);
for (int i = 1; i < list.Count; i++)
{
float current = Vector2.DistanceSquared(Position, list[i].Position);
if (current < dist)
{
closest = list[i];
dist = current;
}
}
}
return(closest);
}