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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
namespace SuperPolarity
{
public class Actor
{
protected SuperPolarity game;
public List<Actor> Children;
// In-Game Properties
public bool Active;
public Rectangle Box;
public Vector4 BoxDimensions;
protected Texture2D BoxTexture;
protected Color Color;
// Physical Properties
public Vector2 Position;
public bool Collides;
protected Vector2 Velocity;
protected Vector2 Acceleration;
public float Angle;
// Constraints / Behavior
public float MaxVelocity;
protected float AccelerationRate;
public bool Dying;
public Actor Parent;
public virtual int Width
{
get { return 0; }
}
public virtual int Height
{
get { return 0; }
}
public Actor(SuperPolarity newGame)
{
game = newGame;
BoxDimensions.X = 20;
BoxDimensions.Y = 20;
BoxDimensions.W = 15;
BoxDimensions.Z = 15;
}
public virtual void Initialize(Vector2 position)
{
Position = position;
Active = true;
Collides = false;
Children = new List<Actor>();
Velocity = new Vector2(0, 0);
Acceleration = new Vector2(0, 0);
MaxVelocity = 5;
AccelerationRate = 10;
Dying = false;
InitBox();
BoxTexture = new Texture2D(game.GraphicsDevice, 1, 1);
BoxTexture.SetData(new Color[] { Color.White });
Color = Color.White;
}
protected void InitBox()
{
Box = new Rectangle((int)(Position.X - BoxDimensions.X), (int)(Position.Y - BoxDimensions.X), (int)(BoxDimensions.X + BoxDimensions.X + BoxDimensions.W), (int)(BoxDimensions.Y + BoxDimensions.Y + BoxDimensions.Z));
}
public void AutoDeccelerate(GameTime gameTime)
{
if (Acceleration.X == 0 && Velocity.X > 0)
{
if (AccelerationRate * gameTime.ElapsedGameTime.TotalSeconds > Velocity.X)
{
Velocity.X = 0;
Acceleration.X = 0;
}
else
{
Acceleration.X = -AccelerationRate;
}
}
if (Acceleration.X == 0 && Velocity.X < 0)
{
if (-AccelerationRate * gameTime.ElapsedGameTime.TotalSeconds < Velocity.X)
{
Velocity.X = 0;
Acceleration.X = 0;
}
else
{
Acceleration.X = AccelerationRate;
}
}
if (Acceleration.Y == 0 && Velocity.Y > 0)
{
if (AccelerationRate * gameTime.ElapsedGameTime.TotalSeconds > Velocity.Y)
{
Velocity.Y = 0;
Acceleration.Y = 0;
}
else
{
Acceleration.Y = -AccelerationRate;
}
}
if (Acceleration.Y == 0 && Velocity.Y < 0)
{
if (-AccelerationRate * gameTime.ElapsedGameTime.TotalSeconds < Velocity.Y)
{
Velocity.Y = 0;
Acceleration.Y = 0;
}
else
{
Acceleration.Y = AccelerationRate;
}
}
}
public virtual void Update(GameTime gameTime)
{
Move(gameTime);
ChangeAngle();
CheckOutliers();
UpdateBox ();
}
protected virtual void UpdateBox()
{
Box.X = (int)(Position.X - BoxDimensions.X);
Box.Y = (int)(Position.Y - BoxDimensions.Y);
}
public virtual void Move(GameTime gameTime)
{
AutoDeccelerate(gameTime);
Velocity.X = Velocity.X + Acceleration.X * (float)gameTime.ElapsedGameTime.TotalSeconds;
Velocity.Y = Velocity.Y + Acceleration.Y * (float)gameTime.ElapsedGameTime.TotalSeconds;
if (Velocity.X > MaxVelocity)
{
Velocity.X = MaxVelocity;
}
if (Velocity.X < -MaxVelocity)
{
Velocity.X = -MaxVelocity;
}
if (Velocity.Y > MaxVelocity)
{
Velocity.Y = MaxVelocity;
}
if (Velocity.Y < -MaxVelocity)
{
Velocity.Y = -MaxVelocity;
}
Position.X = Position.X + Velocity.X;
Position.Y = Position.Y + Velocity.Y;
}
public void ChangeAngle()
{
if (Math.Abs(Velocity.Y) <= 0.1 && Math.Abs(Velocity.X) <= 0.1)
{
return;
}
Angle = (float)Math.Atan2(Velocity.Y, Velocity.X);
}
public virtual void Draw(SpriteBatch spriteBatch)
{
Actor child = null;
// TODO: Check what's up with the null children.
if (Children == null)
{
return;
}
for (var i = Children.Count - 1; i >= 0; i--)
{
child = Children[i];
child.Draw(spriteBatch);
}
//spriteBatch.Draw(BoxTexture, Box, new Color(255, 0, 255, 25));
}
void CheckOutliers()
{
for (var i = Children.Count; i > 0; i--)
{
var actor = Children[i - 1];
if (actor.Position.X < -SuperPolarity.OutlierBounds || actor.Position.Y < -SuperPolarity.OutlierBounds ||
actor.Position.X > game.GraphicsDevice.Viewport.Width + SuperPolarity.OutlierBounds ||
actor.Position.Y > game.GraphicsDevice.Viewport.Height + SuperPolarity.OutlierBounds)
{
Children.Remove(actor);
}
}
}
public virtual void Collide(Actor other, Rectangle collision)
{
}
protected virtual void Die()
{
Dying = true;
}
public virtual void CleanUp()
{
BoxTexture = null;
Children = null;
}
}
}
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