public override void Update(GameTime gameTime)
{
//Sets the starting times.
double curTime = gameTime.TotalGameTime.TotalSeconds;
if (lastSingleShot < 0)
{
lastSingleShot = gameTime.TotalGameTime.TotalSeconds + 5.0f;
lastDoubleShot = gameTime.TotalGameTime.TotalSeconds + 7.0f;
lastTripleShot = gameTime.TotalGameTime.TotalSeconds + 10.0f;
lastPowerUp = gameTime.TotalGameTime.TotalSeconds + 12.0f;
}
//Aims at the player. Always.
Vector2 playPos = GameRoom.gameRoom.player.GetCenterPosition();
rotation = (float)(Math.Atan2(playPos.Y - position.Y, playPos.X - position.X));
canonMuzzle = new Vector2(position.X + (float)Math.Cos(rotation) * 128.0f, position.Y + (float)Math.Sin(rotation) * 128.0f);
//Every triple shot, fire off 3 kinds of enemies.
if (lastTripleShot < curTime)
{
GameRoom.gameRoom.AddActor(new TurnShot(canonMuzzle, (float)(rotation - Math.PI / 8), 64.0f * 8));
GameRoom.gameRoom.AddActor(new AcceleratedShot(canonMuzzle, rotation, 128.0f * 2));
GameRoom.gameRoom.AddActor(new MineShot(canonMuzzle, rotation, 64.0f * 9));
GameRoom.gameRoom.AddActor(new TurnShot(canonMuzzle, (float)(rotation + Math.PI / 8), 64.0f * 8));
lastTripleShot = gameTime.TotalGameTime.TotalSeconds + 5;
canonSprite.SetAnimation("idle");
Sound.GetSound(1001).CreateInstance().Play();
//Every double, fire off 2
}
else if (lastDoubleShot < curTime)
{
GameRoom.gameRoom.AddActor(new AcceleratedShot(canonMuzzle, (float)(rotation - Math.PI / 3), 64.0f * 2));
GameRoom.gameRoom.AddActor(new AcceleratedShot(canonMuzzle, (float)(rotation + Math.PI / 3), 64.0f * 2));
GameRoom.gameRoom.AddActor(new MineShot(canonMuzzle, rotation, 64.0f * 7));
lastDoubleShot = gameTime.TotalGameTime.TotalSeconds + 2;
canonSprite.SetAnimation("idle");
Sound.GetSound(1001).CreateInstance().Play();
//Every single, fire off one.
}
else if (lastSingleShot < curTime)
{
GameRoom.gameRoom.AddActor(new StraightShot(canonMuzzle, rotation, 64.0f * 7));
lastSingleShot = gameTime.TotalGameTime.TotalSeconds + 0.5f;
canonSprite.SetAnimation("idle");
Sound.GetSound(1001).CreateInstance().Play();
}
//Powerups are a coinflip for now
if (lastPowerUp < curTime)
{
double chance = rand.NextDouble();
if (chance < 0.5)
{
GameRoom.gameRoom.AddActor(new HealthPowerUpActor(canonMuzzle, rotation, 64.0f * 4));
}
else
{
GameRoom.gameRoom.AddActor(new InvulnPowerUpActor(canonMuzzle, rotation, 64.0f * 4));
}
lastPowerUp = curTime + 6.0f;
canonSprite.SetAnimation("idle");
Sound.GetSound(1002).CreateInstance().Play();
}
float closestShotTime = (float)Math.Min(lastTripleShot, Math.Min(lastSingleShot, lastDoubleShot));
//Plays an animation
if (Math.Min(lastTripleShot, Math.Min(lastSingleShot, lastDoubleShot)) - 1.0f / 3.0f < curTime)
{
canonSprite.SetAnimation("firing");
}
}
//Collision detection!
public override void LateUpdate(GameTime gameTime)
{
Vector2 playPos = GetCenterPosition();
foreach (var actor in GameRoom.gameRoom.actors)
{
Type t = actor.GetType();
//Spend as little time as humanly possible comparing the player to every actor type that exists in the room.
if (t.IsSubclassOf(typeof(EnemyActor)))
{
EnemyActor enem = (EnemyActor)actor;
Vector2 enemPos = enem.GetCenterPosition();
float xDist = playPos.X - enemPos.X;
float yDist = playPos.Y - enemPos.Y;
//Collisions treat both objects as circle. Not the most accurate hit detection but computationally cheap and easier to write.
if (Math.Sqrt((xDist * xDist + yDist * yDist)) < 32)
{
Damage(enem.damage);
if (invuln)
{
enem.OnKilled();
Sound.GetSound(1004).CreateInstance().Play();
}
else
{
enem.OnImpact();
Sound.GetSound(1003).CreateInstance().Play();
}
}
}
else if (t.IsSubclassOf(typeof(PowerupActor)))
{
PowerupActor pow = (PowerupActor)actor;
if (pow.picked)
{
continue;
}
Vector2 powPos = pow.GetCenterPosition();
float xDist = playPos.X - powPos.X;
float yDist = playPos.Y - powPos.Y;
if (Math.Sqrt((xDist * xDist + yDist * yDist)) < 32)
{
pow.OnPickup(this, gameTime);
}
}
else
{
continue;
}
}
base.LateUpdate(gameTime);
//Out of bounds correction
if (playPos.X < -GetBounds().Width / 2)
{
position = new Vector2(-GetBounds().Width / 2, position.Y);
}
else if (playPos.X > Game1.mainGame.ViewPort.Width)
{
position = new Vector2(Game1.mainGame.ViewPort.Width - GetBounds().Width / 2, position.Y);
}
if (playPos.Y < -GetBounds().Height / 2)
{
position = new Vector2(position.X, -GetBounds().Height / 2);
}
else if (playPos.Y > Game1.mainGame.ViewPort.Height)
{
position = new Vector2(position.X, Game1.mainGame.ViewPort.Height - GetBounds().Height / 2);
}
}