private void ShootBullet()
{
Vector2 deltaVector = new Vector2(this.SpriteRectangle.Width / 2 + 10, this.SpriteRectangle.Height / 2- 15);
bool aCreateNew = true;
foreach (Bullet aBullet in bulletSprites)
{
if (aBullet.Visible == false)
{
aCreateNew = false;
aBullet.Fire(this.SpritePosition+deltaVector,BULLET_SPEED, new Vector2(0, -1));
break;
}
}
if (aCreateNew == true)
{
Bullet aBullet = new Bullet();
aBullet.Load(mContentManager,BULLET_TYPE);
aBullet.Fire(this.SpritePosition+deltaVector,BULLET_SPEED, new Vector2(0, -1));
bulletSprites.Add(aBullet);
}
}
public override void Update(GameTime gameTime)
{
int x = RandomGenerator.getNextRandomNumber(0, 2000);
int condition = x % 16;//condition variable to fire immune green bullets
if (this.alienType!=0)
{
//code to fire immune green bullets if player opts to play without
//horizontal movement
float change;
if (curPlayerTime == 0)
{
prevPlayerX = SpaceGame.playerX;
}
curPlayerTime += gameTime.ElapsedRealTime.Milliseconds;
if (curPlayerTime > 1000)
{
change = prevPlayerX - SpaceGame.playerX;
if (change < 0)
change *= -1;
if (change < 50)
fireBullet = true;
else
fireBullet = false;
curPlayerTime = 0;
}
if (fireBullet == true)
condition = x % 2;
}
else
{
condition = 1;
}
//if condition == 0 green bullet is fired
if (condition == 0 && bulletSprite.Visible == false && alienType>=1)
{
bulletSprite = new Bullet();
bulletSprite.Load(mContentManager, IMMUNE_BULLET);
}
else if (bulletSprite.Visible == false)
{
bulletSprite = new Bullet();
bulletSprite.Load(mContentManager, NORMAL_BULLET);
}
UpdateBullet(gameTime);
if (state == AlienState.EXPLODED)
{
if (currentTime == 0)
SoundPlayer.soundBank.PlayCue("explosion1");
currentTime += gameTime.ElapsedGameTime.Milliseconds;
explosionSprite.Update(gameTime);
if (currentTime > 1000)
{
state = AlienState.DIE;
currentTime = 0;
}
}
base.Update(gameTime);
}
