private static void Attack(ContentManager Content, GameTime gameTime, Boss bossDragon, EnemyAttack bossFireBall, List<EnemyAttack> bossFireBalls)
{
// The boss will attack on set intervals
coolDown += (float)gameTime.ElapsedGameTime.TotalSeconds;
// Fireballs are added to a list to allow the boss to shoot more than once
foreach (var fireBall in bossFireBalls)
{
fireBall.Update();
}
if (coolDown > 3)
{
// A new fireball is generated in a position where it matches the boss mouth
bossFireBall = new EnemyAttack(Content.Load<Texture2D>("Images\\Dragonfire"), new Vector2(bossDragon.Position.X - 65, bossDragon.Position.Y + bossDragon.Texture.Height / 2 - 40), 0f, -10f);
bossFireBalls.Clear();
coolDown = 0;
// The fireball is added to the list of fireballs
bossFireBalls.Add(bossFireBall);
// this variable is used as a trigger to change the boss animation
shot = true;
// A sound is played each time the boss fires
bossDragon.PlaySound();
}
}
public static void BossUpdate(ContentManager Content, GameTime gameTime, Boss bossDragon, List<EnemyAttack> bossFireBalls, GameState CurrentGameState, List<PlayerAttack> ninjaAttacks, Health healthRectangle)
{
healthRectangle.Widht = (int)bossDragon.Life;
BossSummon(Content, gameTime, bossDragon, bossFireBall, bossFireBalls);
BossAnimation(gameTime, bossDragon);
BossCollision(bossDragon, CurrentGameState, ninjaAttacks);
}
public static void DrawBoss(SpriteBatch spriteBatch, Boss bossDragon, List<EnemyAttack> bossFireBalls, Health healthRectangle, SpriteFont font)
{
// Draw boss
bossDragon.Draw(spriteBatch);
foreach (var fireBall in bossFireBalls)
{
// Draw fireballs
fireBall.Draw(spriteBatch);
}
// Draw health bar
healthRectangle.Draw(spriteBatch);
// Draw Boss name
spriteBatch.DrawString(font, "Seesh A'rpin Terme Diatee Xam II ", new Vector2(400, 10), Color.Black);
}
private static void BossAnimation(GameTime gameTime, Boss bossDragon)
{
// A variable used as a timer to change the animation
frame += (float)gameTime.ElapsedGameTime.TotalSeconds;
// If the boss has fired a shot recently
if (shot == true)
{
// Set firring textures according to the timer
if (frame > 0.5)
{
bossDragon.Texture = bossDragon.BossAnimation[2];
}
if (frame > 1)
{
bossDragon.Texture = bossDragon.BossAnimation[3];
frame = 0;
// Change the trigger to false
shot = false;
}
}
else // If he hasn't fired recently
{
// Set default textures according to the timer
if (frame > 0.5)
{
bossDragon.Texture = bossDragon.BossAnimation[0];
}
if (frame > 1)
{
bossDragon.Texture = bossDragon.BossAnimation[1];
frame = 0;
}
}
}
private static void BossSummon(ContentManager Content, GameTime gameTime, Boss bossDragon, EnemyAttack bossFireBall, List<EnemyAttack> bossFireBalls)
{
if (shadow != 255)
{
// At the beginig only the shadow of the poss will be visible
// This can be acheive by setting all the colors to zero and
// gradually increasing the alpha channel till he is visible
color = new Color(0, 0, 0, shadow);
shadow += 1;
bossDragon.SetColor = color;
}
else if (appear != 255)
{
// After the boss is visible the colors start appearing
color = new Color(appear, appear, appear, shadow);
appear += 1;
bossDragon.SetColor = color;
}
else
{
// The boss won't be able to attack until he is completely colored and visible
Attack(Content, gameTime, bossDragon, bossFireBall, bossFireBalls);
}
}
// Collision between the player attacks and the boss
private static void BossCollision(Boss bossDragon, GameState CurrentGameState, List<PlayerAttack> ninjaAttacks)
{
if (CurrentGameState == GameState.Boss)
{
for (int index = 0; index < ninjaAttacks.Count; index++)
{
Rectangle wave = new Rectangle((int)ninjaAttacks[index].Position.X - 100, (int)ninjaAttacks[index].Position.Y, ninjaAttacks[index].Texture.Width / 2, ninjaAttacks[index].Texture.Height / 2);
Rectangle boss = new Rectangle((int)bossDragon.Position.X, (int)(bossDragon.Position.Y + 250), bossDragon.Texture.Width / 2, bossDragon.Texture.Height / 2);
if (wave.Intersects(boss))
{
// The bosss life gradually decreases when he is hit
bossDragon.Life -= 1.5f;
ninjaAttacks.RemoveAt(index);
index--;
}
}
}
}