/// <summary>
/// Called when a collision occurs in other to make a certain event occure.
/// </summary>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <param name="hitter">The hitter.</param>
/// <param name="overseeingGame">The overseeing game.</param>
public override void OnHit(TimeSpan elapsedGameTime, GameObject hitter, MajorLeagueGamingAsteroids overseeingGame)
{
if (hitter.ObjectType == GAME_OBJECT_TYPE.ASTEROID && CanMerge(elapsedGameTime)) //If it's destroyed as a merge
{
if (!((Asteroid)hitter).hasMerged)
{
float direction = (hitter.RotationAngle + rotationAngle) / 2;
Asteroid mergedRoid = new Asteroid(direction, elapsedGameTime, (Size)((int)currentSize + 1));
mergedRoid.Initialize(overseeingGame.GetTexture((MajorLeagueGamingAsteroids.TextureType)((int)currentSize + 1)), position);
overseeingGame.AddGameObject(mergedRoid);
mergedRoid.movementVector = new Vector2((movementVector.X + hitter.MovementVector.X) / 2, (movementVector.Y + hitter.MovementVector.Y) / 2);
hasMerged = true;
}
}
else if (currentSize != Size.SMALL) //If destroyed and should split
{
Vector2 resultingDirectionVector = new Vector2((movementVector.X + hitter.MovementVector.X) / 2, (movementVector.Y + hitter.MovementVector.Y) / 2);
float createdSpeed = (float)Math.Sqrt(resultingDirectionVector.X * resultingDirectionVector.X + resultingDirectionVector.Y * resultingDirectionVector.Y);
float resultingDirection = GetAngleFromVector(resultingDirectionVector);
Asteroid spawnling = new Asteroid(resultingDirection + (float)(Math.PI)/3, elapsedGameTime, (Size)((int)currentSize - 1));
spawnling.Initialize(overseeingGame.GetTexture((MajorLeagueGamingAsteroids.TextureType)((int)currentSize - 1)), position);
overseeingGame.AddGameObject(spawnling);
spawnling.movementVector = new Vector2(0, 0);
spawnling.AccelerateObject(createdSpeed);
spawnling = new Asteroid(resultingDirection - (float)(Math.PI)/3, elapsedGameTime, (Size)((int)currentSize - 1));
spawnling.Initialize(overseeingGame.GetTexture((MajorLeagueGamingAsteroids.TextureType)((int)currentSize - 1)), position);
overseeingGame.AddGameObject(spawnling);
spawnling.movementVector = new Vector2(0, 0);
spawnling.AccelerateObject(createdSpeed);
}
}
/// <summary>
/// Spawns the asteroids.
/// </summary>
/// <param name="nbrAsteroids">The NBR asteroids.</param>
/// <param name="gameTime">The game time.</param>
private void SpawnAsteroids(int nbrAsteroids, TimeSpan gameTime)
{
Vector2 spawnLocation;
for (int i = 0; i < nbrAsteroids; ++i)
{
spawnLocation = GetValidEnemySpawnLocation();
Asteroid roid = new Asteroid(RandomManager.RandomAngleWithVerticalTendency(), gameTime);
roid.Initialize(textures[(int)TextureType.ASTEROID_BIG], spawnLocation);
objectManager.AddObserver(roid);
}
}