/// <summary>
/// Creates a new instance of the BladeSpinner Class
/// </summary>
/// <param name="id">the ID for the base enemy class</param>
/// <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 BladeSpinner(uint id, ContentManager content, Vector2 position)
: base(id)
{
spritesheet = content.Load <Texture2D>("Spritesheets/newsh#.shp.000000");
//Moves frame initialization to a separate function to make the constructor cleaner
initializeFrames();
this.position = position;
//initial directiion and state settings
horDir = flightDirection.positive;
vertDir = flightDirection.positive;
patrolVector = new Vector2(50, 1);
state = spinnerState.flying;
frame = animationFrame.flying1;
frameTimer = 0;
}
/// <summary>
/// Creates a new instance of the BladeSpinner Class
/// </summary>
/// <param name="id">the ID for the base enemy class</param>
/// <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 BladeSpinner(uint id, ContentManager content, Vector2 position)
: base(id)
{
spritesheet = content.Load<Texture2D>("Spritesheets/newsh#.shp.000000");
//Moves frame initialization to a separate function to make the constructor cleaner
initializeFrames();
this.position = position;
//initial directiion and state settings
horDir = flightDirection.positive;
vertDir = flightDirection.positive;
patrolVector = new Vector2(50, 1);
state = spinnerState.flying;
frame = animationFrame.flying1;
frameTimer = 0;
}
/// <summary>
/// Updates the blade spinner
/// </summary>
/// <param name="elapsedTime">The in-game time between the previous and current frame</param>
public override void Update(float elapsedTime)
{
//If the spinner is dead do nothing
if (state == spinnerState.dead)
{
return;
}
//"Sense" the player ship
PlayerShip player = ScrollingShooterGame.Game.Player;
//-40 is so the Spinner actually covers the ship instead of menacing its back right corner
Vector2 playerPosition = new Vector2(player.Bounds.Center.X - 40, player.Bounds.Center.Y - 40);
// Get a vector from our position to the player's position
Vector2 toPlayer = playerPosition - this.position;
//Conditionals to keep the spinner on screen by adjusting the patrol vector
//A switch statement may be more efficient
if (horDir == flightDirection.positive && this.position.X > 725)
{
horDir = flightDirection.negative;
}
else if (horDir == flightDirection.negative && this.position.X < 25)
{
horDir = flightDirection.positive;
}
if (vertDir == flightDirection.negative && this.position.Y < 25)
{
vertDir = flightDirection.positive;
}
else if (vertDir == flightDirection.positive && this.position.Y > 400)
{
vertDir = flightDirection.negative;
}
patrolVector.X = ((int)horDir * 50);
patrolVector.Y = ((int)vertDir) * 5;
//End of conditionals to stay on screen
//Determine if the player is "seen"
if (toPlayer.LengthSquared() < 30000 && state != spinnerState.dying)
{
//if seen attack player
state = spinnerState.attacking;
}
else if (state != spinnerState.dying)
{
state = spinnerState.flying;
}
switch (state)
{
case spinnerState.flying:
//normalize the patrol vector
patrolVector.Normalize();
//move
this.position += patrolVector * elapsedTime * 250;
break;
case spinnerState.attacking:
// Get a normalized steering vector
toPlayer.Normalize();
// Steer towards them
this.position += toPlayer * elapsedTime * 125;
break;
case spinnerState.dying:
//No movement while dying
break;
}
//Collision detection?
/*
* if(state==spinnerState.attacking)
* {
* if(hitPlayer)
* damage player
*
* if(hitProjectile)
* {
* take a little damage
* if(hp==0)
* state==spinnerState.dying;
* }
* }
* else if(state==spinnerState.flying)
*{
* if(hitPorjectile)
* {
* take more damage
* if(hp==0)
* state==spinnerState.dying;
* }
* if(hitPlayer)
* {
* //Should never happen
* damage player a little
* state = spinnerState.dying;
* }
*}
* else if(state==spinnerState.dying)
*{
* if(hit Object)
* {
* do "med" damage
* }
*}
*/
}
/// <summary>
/// Updates the blade spinner
/// </summary>
/// <param name="elapsedTime">The in-game time between the previous and current frame</param>
public override void Update(float elapsedTime)
{
//If the spinner is dead do nothing
if (state == spinnerState.dead)
return;
//"Sense" the Player ship
PlayerShip Player = ScrollingShooterGame.Game.Player;
//-40 is so the Spinner actually covers the ship instead of menacing its back right corner
Vector2 PlayerPosition = new Vector2(Player.Bounds.Center.X-40, Player.Bounds.Center.Y-40);
// Get a vector from our position to the Player's position
Vector2 toPlayer = PlayerPosition - this.position;
//Conditionals to keep the spinner on screen by adjusting the patrol vector
//A switch statement may be more efficient
if (horDir == flightDirection.positive && this.position.X > 725)
{
horDir = flightDirection.negative;
}
else if (horDir == flightDirection.negative && this.position.X < 25)
{
horDir = flightDirection.positive;
}
if (vertDir == flightDirection.negative && this.position.Y < 25)
{
vertDir = flightDirection.positive;
}
else if (vertDir == flightDirection.positive && this.position.Y > 400)
{
vertDir = flightDirection.negative;
}
patrolVector.X = ((int)horDir * 50);
patrolVector.Y = ((int)vertDir) * 5;
//End of conditionals to stay on screen
//Determine if the Player is "seen"
if (toPlayer.LengthSquared() < 30000 && state != spinnerState.dying)
{
//if seen attack Player
state = spinnerState.attacking;
}
else if (state != spinnerState.dying)
{
state = spinnerState.flying;
}
switch (state)
{
case spinnerState.flying:
//normalize the patrol vector
patrolVector.Normalize();
//move
this.position += patrolVector * elapsedTime * 250;
break;
case spinnerState.attacking:
// Get a normalized steering vector
toPlayer.Normalize();
// Steer towards them
this.position += toPlayer * elapsedTime * 125;
break;
case spinnerState.dying:
//No movement while dying
break;
}
//Collision detection?
/*
* if(state==spinnerState.attacking)
* {
* if(hitPlayer)
* damage Player
*
* if(hitProjectile)
* {
* take a little damage
* if(hp==0)
* state==spinnerState.dying;
* }
* }
* else if(state==spinnerState.flying)
*{
* if(hitPorjectile)
* {
* take more damage
* if(hp==0)
* state==spinnerState.dying;
* }
* if(hitPlayer)
* {
* //Should never happen
* damage Player a little
* state = spinnerState.dying;
* }
*}
*else if(state==spinnerState.dying)
*{
* if(hit Object)
* {
* do "med" damage
* }
*}
*/
}
