// take an inactive bonus icon from the pool and add it to the screen
public static void AddBonus(GameSprite source)
{
// for each bonus in the pool
for (int i = 0; i < m_Bonuses.Length; i++)
{
// is this bonus inactive?
if (!m_Bonuses[i].IsActive)
{
// set the bonus' location, based on originator
Vector2 pos = Vector2.Zero;
pos.X = source.Location.X + source.TextureRect.Width / 2;
pos.X -= m_Bonuses[i].TextureRect.Width / 2;
pos.Y = source.Location.Y + source.TextureRect.Height / 2;
pos.Y -= m_Bonuses[i].TextureRect.Height / 2;
// add bonus icon to the screen
m_Bonuses[i].Location = pos;
m_Bonuses[i].Init();
m_Bonuses[i].IsActive = true;
// we're done, exit the loop
break;
}
}
}
// take an inactive bullet from the pool and add it to the screen
public static void AddBullet(GameSprite source, bool up)
{
// for each bullet
for (int i = 0; i < m_Bullets.Length; i++)
{
// is this bullet inactive?
if (!m_Bullets[i].IsActive)
{
// set bullet's direction
m_Bullets[i].MoveUp = up;
// set bullet's position, based on originator
Vector2 pos = Vector2.Zero;
pos.X = source.Location.X + source.TextureRect.Width / 2;
pos.X -= m_Bullets[i].TextureRect.Width / 2;
pos.Y = source.Location.Y + source.TextureRect.Height / 2;
pos.Y -= m_Bullets[i].TextureRect.Height / 2;
// add bullet to the screen
m_Bullets[i].Init();
m_Bullets[i].Location = pos;
m_Bullets[i].IsActive = true;
// if this bullet came from a player, remember
// who shot it so that they will get credit if it
// hits an enemy
if (source.GetType() == typeof(Player))
{
m_Bullets[i].Shooter = (Player)source;
}
// we're done, exit the loop
break;
}
}
}
// this method provides a quick and dirty way to tell
// when a game object has left the screen. when it does,
// we can return it to the pool of available game objects
public static void ValidateRoughBounds(GameSprite sprite)
{
if (sprite.Location.X < -32) // too far left
{
sprite.IsActive = false;
}
else if (sprite.Location.X > 640) // too far right
{
sprite.IsActive = false;
}
if (sprite.Location.Y < -32) // too far up
{
sprite.IsActive = false;
}
else if (sprite.Location.Y > 480) // too far down
{
sprite.IsActive = false;
}
}
// take an inactive splat icon from the pool and add it to the screen
public static void AddSplat(GameSprite source)
{
// for each splat icon in the pool
for (int i = 0; i < m_Splats.Length; i++)
{
// is this splat inactive?
if (!m_Splats[i].IsActive)
{
// set the splat's location, based on originator
Vector2 pos = Vector2.Zero;
pos.X = source.Location.X + source.TextureRect.Width / 2;
pos.X -= m_Splats[i].TextureRect.Width / 2;
pos.Y = source.Location.Y + source.TextureRect.Height / 2;
pos.Y -= m_Splats[i].TextureRect.Height / 2;
// add splat icon to the screen
m_Splats[i].Location = pos;
m_Splats[i].Init();
m_Splats[i].IsActive = true;
// return originator to the inactive pool
source.IsActive = false;
// we're done, exit the loop
break;
}
}
}