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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace SuperPolarity
{
static class ActorManager
{
static SuperPolarity Game;
static int OutlierBounds;
static IList<Actor> Actors;
static ActorManager()
{
OutlierBounds = 100;
Actors = new List<Actor>();
}
static public void CheckIn(Actor actor)
{
Actors.Add(actor);
}
static public void CheckOut(Actor actor)
{
actor.CleanUp();
Actors.Remove(actor);
actor = null;
}
static public void Update(GameTime gameTime)
{
CheckActors();
CheckOutliers();
foreach (Actor actor in Actors)
{
actor.Update(gameTime);
}
}
static public void Draw(SpriteBatch spriteBatch)
{
foreach (Actor actor in Actors)
{
actor.Draw(spriteBatch);
}
}
static void CheckActors()
{
for (var i = Actors.Count - 1; i >= 0; i--)
{
if (i >= Actors.Count) {
i = Actors.Count - 1;
}
if (Actors.Count == 0)
{
return;
}
Actor actor = Actors[i];
for (var j = i - 1; j >= 0; j--)
{
Actor other = Actors[j];
CheckCollision(actor, other);
if (actor.GetType().IsSubclassOf(typeof(Ship)) && other.GetType().IsSubclassOf(typeof(Ship)))
{
CheckMagnetism((Ship)actor, (Ship)other);
}
}
}
}
static void CheckCollision(Actor actor, Actor other)
{
var collision = Rectangle.Intersect(actor.Box, other.Box);
var inverseCollision = Rectangle.Intersect(other.Box, actor.Box);
if (!collision.IsEmpty && !actor.Dying && !other.Dying)
{
actor.Collide(other, collision);
other.Collide(actor, inverseCollision);
}
}
static void CheckMagnetism(Ship actor, Ship other)
{
if (actor.CurrentPolarity != Ship.Polarity.Neutral && other.CurrentPolarity != Ship.Polarity.Neutral)
{
var dy = other.Position.Y - actor.Position.Y;
var dx = other.Position.X - actor.Position.X;
var linearDistance = Math.Sqrt(Math.Pow(dx, 2) + Math.Pow(dy, 2));
var angle = (float) Math.Atan2(dy, dx);
var otherAngle = (float)Math.Atan2(-dy, -dx);
if (linearDistance < actor.MagneticRadius || linearDistance < other.MagneticRadius)
{
actor.Magnetize(other, (float)linearDistance, angle);
other.Magnetize(actor, (float)linearDistance, otherAngle);
}
}
}
static void CheckOutliers()
{
for (var i = Actors.Count; i > 0; i--)
{
var actor = Actors[i-1];
if (actor.Position.X < -OutlierBounds || actor.Position.Y < -OutlierBounds ||
actor.Position.X > Game.GraphicsDevice.Viewport.Width + OutlierBounds ||
actor.Position.Y > Game.GraphicsDevice.Viewport.Height + OutlierBounds)
{
CheckOut(actor);
if (actor.Parent != null)
{
actor.Parent.Children.Remove(actor);
}
}
}
}
static public void Empty()
{
foreach (Actor actor in Actors) {
actor.CleanUp();
}
Actors.Clear();
}
internal static void SetGame(SuperPolarity game)
{
Game = game;
}
public static void Bomb()
{
for (var i = Actors.Count - 1; i >= 0; i--)
{
var actor = Actors[i];
if (actor.GetType() == typeof(StandardShip))
{
CheckOut(actor);
Renderer.CheckOut(actor);
}
}
}
public static int CountBaddies()
{
return Actors.Where(a => a.GetType() == typeof(StandardShip)).Count();
}
}
}
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