/// <summary>
/// Updates the Arrow ship
/// </summary>
/// <param name="elapsedTime">The in-game time between the previous and current frame</param>
public override void Update(float elapsedTime)
{
gunTimer += elapsedTime;
// Sense the Player's position
PlayerShip Player = ScrollingShooterGame.Game.Player;
Vector2 PlayerPosition = new Vector2(Player.Bounds.Center.X, Player.Bounds.Center.Y);
// Get a vector from our position to the Player's position
Vector2 toPlayer = PlayerPosition - this.position;
if (toPlayer.LengthSquared() < 20000)
{
// We sense the Player's ship!
// Get a normalized steering vector
toPlayer.Normalize();
// Steer towards them!
this.position += toPlayer * elapsedTime * 120;
// Change the steering state to reflect our direction
if (toPlayer.X < -0.5f)
{
steeringState = ArrowSteeringState.Left;
//Fire!
if (gunTimer > .7f)
{
ScrollingShooterGame.GameObjectManager.CreateProjectile(ProjectileType.ArrowProjectile, position);
gunTimer = 0f;
}
}
else if (toPlayer.X > 0.5f)
{
steeringState = ArrowSteeringState.Right;
//Fire!
if (gunTimer > .7f)
{
ScrollingShooterGame.GameObjectManager.CreateProjectile(ProjectileType.ArrowProjectile, position);
gunTimer = 0f;
}
}
else
{
steeringState = ArrowSteeringState.Straight;
}
}
}
/// <summary>
/// Creates a new instance of a Dart enemy ship
/// </summary>
/// <param name="content">A ContentManager to load resources with</param>
/// <param name="position">The position of the Dart ship in the game world</param>
public Arrow(uint id, ContentManager content, Vector2 position)
: base(id)
{
this.position = position;
spritesheet = content.Load<Texture2D>("Spritesheets/newsh$.shp.000000");
spriteBounds[(int)ArrowSteeringState.Left].X = 5;
spriteBounds[(int)ArrowSteeringState.Left].Y = 197;
spriteBounds[(int)ArrowSteeringState.Left].Width = 20;
spriteBounds[(int)ArrowSteeringState.Left].Height = 28;
spriteBounds[(int)ArrowSteeringState.Straight].X = 52;
spriteBounds[(int)ArrowSteeringState.Straight].Y = 197;
spriteBounds[(int)ArrowSteeringState.Straight].Width = 20;
spriteBounds[(int)ArrowSteeringState.Straight].Height = 28;
spriteBounds[(int)ArrowSteeringState.Right].X = 101;
spriteBounds[(int)ArrowSteeringState.Right].Y = 197;
spriteBounds[(int)ArrowSteeringState.Right].Width = 20;
spriteBounds[(int)ArrowSteeringState.Right].Height = 28;
steeringState = ArrowSteeringState.Straight;
}
/// <summary>
/// Creates a new instance of a Dart enemy ship
/// </summary>
/// <param name="content">A ContentManager to load resources with</param>
/// <param name="position">The position of the Dart ship in the game world</param>
public Arrow(uint id, ContentManager content, Vector2 position)
: base(id)
{
this.position = position;
spritesheet = content.Load <Texture2D>("Spritesheets/newsh$.shp.000000");
spriteBounds[(int)ArrowSteeringState.Left].X = 5;
spriteBounds[(int)ArrowSteeringState.Left].Y = 197;
spriteBounds[(int)ArrowSteeringState.Left].Width = 20;
spriteBounds[(int)ArrowSteeringState.Left].Height = 28;
spriteBounds[(int)ArrowSteeringState.Straight].X = 52;
spriteBounds[(int)ArrowSteeringState.Straight].Y = 197;
spriteBounds[(int)ArrowSteeringState.Straight].Width = 20;
spriteBounds[(int)ArrowSteeringState.Straight].Height = 28;
spriteBounds[(int)ArrowSteeringState.Right].X = 101;
spriteBounds[(int)ArrowSteeringState.Right].Y = 197;
spriteBounds[(int)ArrowSteeringState.Right].Width = 20;
spriteBounds[(int)ArrowSteeringState.Right].Height = 28;
steeringState = ArrowSteeringState.Straight;
}
/// <summary>
/// Updates the Arrow ship
/// </summary>
/// <param name="elapsedTime">The in-game time between the previous and current frame</param>
public override void Update(float elapsedTime)
{
gunTimer += elapsedTime;
// Sense the player's position
PlayerShip player = ScrollingShooterGame.Game.Player;
Vector2 playerPosition = new Vector2(player.Bounds.Center.X, player.Bounds.Center.Y);
// Get a vector from our position to the player's position
Vector2 toPlayer = playerPosition - this.position;
if (toPlayer.LengthSquared() < 20000)
{
// We sense the player's ship!
// Get a normalized steering vector
toPlayer.Normalize();
// Steer towards them!
this.position += toPlayer * elapsedTime * 120;
// Change the steering state to reflect our direction
if (toPlayer.X < -0.5f)
{
steeringState = ArrowSteeringState.Left;
//Fire!
if (gunTimer > .7f)
{
ScrollingShooterGame.GameObjectManager.CreateProjectile(ProjectileType.ArrowProjectile, position);
gunTimer = 0f;
}
}
else if (toPlayer.X > 0.5f)
{
steeringState = ArrowSteeringState.Right;
//Fire!
if (gunTimer > .7f)
{
ScrollingShooterGame.GameObjectManager.CreateProjectile(ProjectileType.ArrowProjectile, position);
gunTimer = 0f;
}
}
else
steeringState = ArrowSteeringState.Straight;
}
}