public void spawnPowerup()
{
position.X = (float)rand.NextDouble() * outerLimit * 2 - outerLimit; //In the playing area
position.Y = (float)rand.NextDouble() * outerLimit * 2 - outerLimit;
position.Z = (float)rand.NextDouble() * outerLimit * 2 - outerLimit;
type = (Constants.PowerUpType)rand.Next(0, 3);
isActive = true;
}
private void checkCollisions()
{
//checks to see if the player is touching an aseroid
BoundingSphere playerBoundingSphere = player.model.Meshes[0].BoundingSphere.Transform(Matrix.CreateTranslation(player.position));
foreach (Asteroid a in allAsteroids)
{
if (a.isActive)
{
BoundingSphere aBoundSphere = a.getModel().Meshes[0].BoundingSphere.Transform(a.getWorldMatrix());
if (playerBoundingSphere.Intersects(aBoundSphere))
{
//System.Diagnostics.Debug.Write("MAN DOWN\n");
//DIE!
currentState = GameStates.Dead;
lives--;
}
}
}
//Is the player hitting an item?
foreach (Powerup p in allItems)
{
if (p.isActive)
{
BoundingSphere aBoundSphere = p.getModel().Meshes[0].BoundingSphere.Transform(p.getWorldMatrix());
if (playerBoundingSphere.Intersects(aBoundSphere))
{
//System.Diagnostics.Debug.Write("Got a powerup!\n");
//Find Item type
powerupSound.Play();
Constants.PowerUpType thisType = p.PickUp();
if (thisType == Constants.PowerUpType.Fuel)
{
player.addFuel(25);
}
if (thisType == Constants.PowerUpType.MultiShot)
{
player.multiBullet = true;
}
if (thisType == Constants.PowerUpType.Speed)
{
player.doubleSpeed = true;
}
}
}
}
//checks to see if an asteroid is colliding with another asteroid
foreach (Asteroid a in allAsteroids)
{
foreach (Asteroid b in allAsteroids)
{
if (!a.Equals(b) && a.isActive && b.isActive)
{
CheckForCollision(a, b);
}
}
}
//checks if a bullet is hitting an asteroid
foreach (Bullet b in player.bulletSupply)
{
if (b.isActive)
{
BoundingBox bulletBox = UpdateBoundingBox(bullet, b.getWorldMatrix());
foreach (Asteroid a in allAsteroids)
{
if (a.isActive)
{
BoundingSphere aBoundSphere = a.getModel().Meshes[0].BoundingSphere.Transform(a.getWorldMatrix());
if (bulletBox.Intersects(aBoundSphere))
{
//System.Diagnostics.Debug.Write("Asteroid Shot Down!\n");
//Destroy asteroid!!
if (a.hit())
{
asteroidsLeft--; //destroy the asteroid
}
b.isActive = false; //destory the bullet
//asteroidsLeft--;
//TODO MAKE AN EXPLOSION HERE!
explosionSound.Play();
createExplosion(a.position);
}
}
}
}
}
}
