/// <summary>
/// Checks if this Jet is within firing range of the Player,
/// if so then begin firing
/// </summary>
private void checkIfInFiringRange(Vector2 PlayerPosition, int PlayerWidth)
{
switch (_myBehaviourState)
{
//Only need to check when in Fire or Strafe states
case JetMinionBehaviourState.STRAFE:
if (Math.Abs((PlayerPosition.X + PlayerWidth * 0.5) - (Position.X + Bounds.Width * 0.5)) <= FireRange)
{
_myBehaviourState = JetMinionBehaviourState.FIRE;
onEntry();
}
break;
case JetMinionBehaviourState.FIRE:
if (Math.Abs(PlayerPosition.X - Position.X) > FireRange)
{
_myBehaviourState = JetMinionBehaviourState.STRAFE;
}
break;
}
}
/// <summary>
/// Checks if this Jets life time is up,
/// if so then start retreating
/// </summary>
private void checkIfLifeTimeOver()
{
switch (_myVisualState)
{
//Need to check this for both Healthy and Damaged states
case JetMinionVisualState.HEALTHY:
case JetMinionVisualState.DAMAGED:
if (_timerLife <= 0)
{
_myBehaviourState = JetMinionBehaviourState.RETREAT;
}
break;
}
}
/// <summary>
/// Checks if the Jet can sense the Player yet
/// </summary>
private void checkIfInAlertRange(Vector2 PlayerPosition)
{
switch (_myBehaviourState)
{
//Only need to do this in the ALERT state
case JetMinionBehaviourState.ALERT:
//Gets the vector from the Player to this jet and gets its length (squared for efficiency)
//and compares it with the alert range (squared)
if ((Position - PlayerPosition).LengthSquared() <= (AlertRange * AlertRange))
{
_myBehaviourState = JetMinionBehaviourState.SEEKSTRAFE;
}
break;
}
}
/// <summary>
/// Checks if this Jet is in strafing range of the Player,
/// if so then begin strafing
/// </summary>
private void checkIfInStrafingRange(Vector2 PlayerPosition)
{
switch (_myBehaviourState)
{
case JetMinionBehaviourState.SEEKSTRAFE:
//StrafeDistance is just a distance between the tip of the Jet
//and the Player position, so no fancy math here
float distanceAway = PlayerPosition.Y - (Position.Y + Bounds.Height);
if (distanceAway > StrafeDistance - 5 && distanceAway < StrafeDistance + 5)
{
_myBehaviourState = JetMinionBehaviourState.STRAFE;
}
break;
}
}
//All methods below this are private
#region Sensor Checks (and subsequent transitions)
/// <summary>
/// Checks if this Jet is On screen, if so then Alert it
/// </summary>
private void checkIfOnScreen()
{
switch (_myBehaviourState)
{
//Only need to do this if in the IDLE state
case JetMinionBehaviourState.IDLE:
//I realize I *might* be able to do this with the Intersects() method with
//the sprite bounds and Game screen, but I'm not sure if that will work
//and I know that if I do do that, I will just have to change it later -_-
//Check if sprite is past left and top sides
if ((Position.X + Bounds.Width) > 0 && (Position.Y + Bounds.Height) > 0)
{
//Check if the sprite has not passed the right or bottom sides
if (Position.X < GameScreen.Width && Position.Y < GameScreen.Height)
{
_myBehaviourState = JetMinionBehaviourState.ALERT;
}
}
break;
}
}
/// <summary>
/// Initializes the values of this Jet
/// </summary>
/// <param name="content"></param>
/// <param name="position"></param>
private void Initiailize(ContentManager content, Vector2 position)
{
//Setting Health
_health = FullHealth;
//Initializing States
_myVisualState = JetMinionVisualState.HEALTHY;
_myBehaviourState = JetMinionBehaviourState.IDLE;
_myGunState = GunState.REST;
_oldGunState = GunState.RIGHT;
//Setting the initial position of the ship
_position = position;
//Setting up the initial direction
_isMovingLeft = true;
//Setting up the timers
_timerLife = TotalLifeTime;
_timerFire = HealthyFireRate;
_timerExplosion = TotalExplosionTime;
//Setting up the Explosion Animator
_explosionAnimator = new ExplodeAnim(ExplosionType.SINGLE, 0.2f, new Rectangle((int)position.X, (int)position.Y, _spriteBounds[1].Width, _spriteBounds[1].Height));
_spriteSheet = content.Load<Texture2D>("Spritesheets/newshi.shp.000000");
_explosionSpriteSheet = content.Load<Texture2D>("Spritesheets/newsh6.shp.000000");
#region Initializing _spriteBounds
_spriteBounds[(int)JetMinionVisualState.HEALTHY].X = 98;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Y = 143;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Width = 93;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Height = 80;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].X = 2;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Y = 143;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Width = 93;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Height = 53;
//This makes returning bounds easier, no check required
_spriteBounds[(int)JetMinionVisualState.EXPLODING] = Rectangle.Empty;
_spriteBounds[(int)JetMinionVisualState.DEAD] = Rectangle.Empty;
#endregion
#region Initializing _spriteGun
_spriteGun[(int)GunState.LEFT].X = 62;
_spriteGun[(int)GunState.LEFT].Y = 196;
_spriteGun[(int)GunState.LEFT].Width = 21;
_spriteGun[(int)GunState.LEFT].Height = 21;
_spriteGun[(int)GunState.REST].X = 38;
_spriteGun[(int)GunState.REST].Y = 196;
_spriteGun[(int)GunState.REST].Width = 21;
_spriteGun[(int)GunState.REST].Height = 20;
_spriteGun[(int)GunState.RIGHT].X = 14;
_spriteGun[(int)GunState.RIGHT].Y = 196;
_spriteGun[(int)GunState.RIGHT].Width = 21;
_spriteGun[(int)GunState.RIGHT].Height = 21;
#endregion
}
/// <summary>
/// Checks if this Jet is On screen, if so then Alert it
/// </summary>
private void checkIfOnScreen()
{
switch (_myBehaviourState)
{
//Only need to do this if in the IDLE state
case JetMinionBehaviourState.IDLE:
//I realize I *might* be able to do this with the Intersects() method with
//the sprite bounds and Game screen, but I'm not sure if that will work
//and I know that if I do do that, I will just have to change it later -_-
//Check if sprite is past left and top sides
if ((Position.X + Bounds.Width) > 0 && (Position.Y + Bounds.Height) > 0)
{
//Check if the sprite has not passed the right or bottom sides
if (Position.X < GameScreen.Width && Position.Y < GameScreen.Height)
{
_myBehaviourState = JetMinionBehaviourState.ALERT;
}
}
break;
}
}
/// <summary>
/// Checks if this Jets life time is up,
/// if so then start retreating
/// </summary>
private void checkIfLifeTimeOver()
{
switch (_myVisualState)
{
//Need to check this for both Healthy and Damaged states
case JetMinionVisualState.HEALTHY:
case JetMinionVisualState.DAMAGED:
if (_timerLife <= 0)
{
_myBehaviourState = JetMinionBehaviourState.RETREAT;
}
break;
}
}
/// <summary>
/// Checks if this Jet is in strafing range of the player,
/// if so then begin strafing
/// </summary>
private void checkIfInStrafingRange(Vector2 playerPosition)
{
switch (_myBehaviourState)
{
case JetMinionBehaviourState.SEEKSTRAFE:
//StrafeDistance is just a distance between the tip of the Jet
//and the player position, so no fancy math here
float distanceAway = playerPosition.Y - (Position.Y + Bounds.Height);
if (distanceAway > StrafeDistance - 5 && distanceAway < StrafeDistance + 5)
{
_myBehaviourState = JetMinionBehaviourState.STRAFE;
}
break;
}
}
/// <summary>
/// Checks if this Jet is within firing range of the player,
/// if so then begin firing
/// </summary>
private void checkIfInFiringRange(Vector2 playerPosition, int playerWidth)
{
switch (_myBehaviourState)
{
//Only need to check when in Fire or Strafe states
case JetMinionBehaviourState.STRAFE:
if (Math.Abs((playerPosition.X + playerWidth * 0.5) - (Position.X + Bounds.Width * 0.5)) <= FireRange)
{
_myBehaviourState = JetMinionBehaviourState.FIRE;
onEntry();
}
break;
case JetMinionBehaviourState.FIRE:
if (Math.Abs(playerPosition.X - Position.X) > FireRange)
{
_myBehaviourState = JetMinionBehaviourState.STRAFE;
}
break;
}
}
/// <summary>
/// Checks if the Jet can sense the player yet
/// </summary>
private void checkIfInAlertRange(Vector2 playerPosition)
{
switch (_myBehaviourState)
{
//Only need to do this in the ALERT state
case JetMinionBehaviourState.ALERT:
//Gets the vector from the player to this jet and gets its length (squared for efficiency)
//and compares it with the alert range (squared)
if ((Position - playerPosition).LengthSquared() <= (AlertRange * AlertRange))
{
_myBehaviourState = JetMinionBehaviourState.SEEKSTRAFE;
}
break;
}
}
/// <summary>
/// Initializes the values of this Jet
/// </summary>
/// <param name="content"></param>
/// <param name="position"></param>
private void Initiailize(ContentManager content, Vector2 position)
{
//Setting Health
_health = FullHealth;
//Initializing States
_myVisualState = JetMinionVisualState.HEALTHY;
_myBehaviourState = JetMinionBehaviourState.IDLE;
_myGunState = GunState.REST;
_oldGunState = GunState.RIGHT;
//Setting the initial position of the ship
_position = position;
//Setting up the initial direction
_isMovingLeft = true;
//Setting up the timers
_timerLife = TotalLifeTime;
_timerFire = HealthyFireRate;
_timerExplosion = TotalExplosionTime;
//Setting up the Explosion Animator
_explosionAnimator = new ExplodeAnim(ExplosionType.SINGLE, 0.2f, new Rectangle((int)position.X, (int)position.Y, _spriteBounds[1].Width, _spriteBounds[1].Height));
_spriteSheet = content.Load <Texture2D>("Spritesheets/newshi.shp.000000");
_explosionSpriteSheet = content.Load <Texture2D>("Spritesheets/newsh6.shp.000000");
#region Initializing _spriteBounds
_spriteBounds[(int)JetMinionVisualState.HEALTHY].X = 98;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Y = 143;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Width = 93;
_spriteBounds[(int)JetMinionVisualState.HEALTHY].Height = 80;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].X = 2;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Y = 143;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Width = 93;
_spriteBounds[(int)JetMinionVisualState.DAMAGED].Height = 53;
//This makes returning bounds easier, no check required
_spriteBounds[(int)JetMinionVisualState.EXPLODING] = Rectangle.Empty;
_spriteBounds[(int)JetMinionVisualState.DEAD] = Rectangle.Empty;
#endregion
#region Initializing _spriteGun
_spriteGun[(int)GunState.LEFT].X = 62;
_spriteGun[(int)GunState.LEFT].Y = 196;
_spriteGun[(int)GunState.LEFT].Width = 21;
_spriteGun[(int)GunState.LEFT].Height = 21;
_spriteGun[(int)GunState.REST].X = 38;
_spriteGun[(int)GunState.REST].Y = 196;
_spriteGun[(int)GunState.REST].Width = 21;
_spriteGun[(int)GunState.REST].Height = 20;
_spriteGun[(int)GunState.RIGHT].X = 14;
_spriteGun[(int)GunState.RIGHT].Y = 196;
_spriteGun[(int)GunState.RIGHT].Width = 21;
_spriteGun[(int)GunState.RIGHT].Height = 21;
#endregion
}
