| public DestroyObject ( uint id ) : ScrollingShooter.GameObject | ||
| id | uint | The game object's ID |
| return | ScrollingShooter.GameObject | |
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}
// TODO: Add your update logic here
float elapsedTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
LevelManager.Update(elapsedTime);
GameObjectManager.Update(elapsedTime);
// Process collisions
foreach (CollisionPair pair in GameObjectManager.Collisions)
{
// Player collisions
if (pair.A == Player.ID || pair.B == Player.ID)
{
uint colliderID = (pair.A == Player.ID) ? pair.B : pair.A;
GameObject collider = GameObjectManager.GetObject(colliderID);
// Process powerup collisions
Powerup powerup = collider as Powerup;
if (powerup != null)
{
Player.ApplyPowerup(powerup.Type);
GameObjectManager.DestroyObject(colliderID);
}
//NOTE: Apply to more than the kamikaze enemy?
// Process kamakaze collisions
Enemy enemy = collider as Enemy;
if (enemy != null && enemy.GetType() == typeof(Kamikaze))
{
//Player take damage
GameObjectManager.DestroyObject(colliderID);
GameObjectManager.CreateExplosion(colliderID);
}
}
}
base.Update(gameTime);
}
/// <summary>
/// Helper method for processing gameobject collisions
/// </summary>
void ProcessCollisions()
{
// Process collisions
foreach (CollisionPair pair in GameObjectManager.Collisions)
{
GameObject objectA = GameObjectManager.GetObject(pair.A);
GameObject objectB = GameObjectManager.GetObject(pair.B);
// Player collisions
if (objectA.ObjectType == ObjectType.Player || objectB.ObjectType == ObjectType.Player)
{
PlayerShip player = ((objectA.ObjectType == ObjectType.Player) ? objectA : objectB) as PlayerShip;
GameObject collider = (objectA.ObjectType == ObjectType.Player) ? objectB : objectA;
// Process powerup collisions
switch (collider.ObjectType)
{
case ObjectType.Powerup:
Powerup powerup = collider as Powerup;
player.ApplyPowerup(powerup.Type);
GameObjectManager.DestroyObject(collider.ID);
break;
case ObjectType.Enemy:
Enemy enemy = collider as Enemy;
if (enemy.GetType() == typeof(Kamikaze) || enemy.GetType() == typeof(Mandible) ||
enemy.GetType() == typeof(SuicideBomber) || enemy.GetType() == typeof(Mine))
{
//Player take damage
GameObjectManager.DestroyObject(collider.ID);
GameObjectManager.CreateExplosion(collider.ID);
}
break;
case ObjectType.EnemyProjectile:
Projectile projectile = collider as Projectile;
// Damage player
player.Health -= projectile.Damage;
if (player.Health <= 0)
{
GameObjectManager.DestroyObject(player.ID);
GameObjectManager.CreateExplosion(player.ID);
}
GameObjectManager.DestroyObject(collider.ID);
break;
}
}
// Player Projectile collisions
else if (objectA.ObjectType == ObjectType.PlayerProjectile || objectB.ObjectType == ObjectType.PlayerProjectile)
{
Projectile playerProjectile = ((objectA.ObjectType == ObjectType.PlayerProjectile) ? objectA : objectB) as Projectile;
GameObject collider = (objectA.ObjectType == ObjectType.Player) ? objectB : objectA;
// Process collisions
switch (collider.ObjectType)
{
case ObjectType.Enemy:
Enemy enemy = collider as Enemy;
//Enemy take damage
enemy.Health -= playerProjectile.Damage;
// If health <= 0, kill enemy
if (enemy.Health <= 0)
{
GameObjectManager.DestroyObject(collider.ID);
GameObjectManager.CreateExplosion(collider.ID);
}
// Destroy projectile
// Note, if there are special things for the bullet, add them here
GameObjectManager.DestroyObject(playerProjectile.ID);
break;
case ObjectType.Boss:
Boss boss = collider as Boss;
// Boss take damage
boss.Health -= playerProjectile.Damage;
// If health <= 0, kill boss
if (boss.Health <= 0)
{
GameObjectManager.DestroyObject(collider.ID);
GameObjectManager.CreateExplosion(collider.ID);
}
// Destroy projectile
// Note, if there are special things for the bullet, add them here
GameObjectManager.DestroyObject(playerProjectile.ID);
break;
}
}
}
}