/// <summary>
/// Move slider left on keyboard left. Also handles explicit collision detection because of a bug with slider moving
/// </summary>
/// <param name="x">The value by which slider will move left in a single frame</param>
/// <param name="ball">To detect collision with ball</param>
/// <param name="brickManager">To detect collision with brick</param>
/// <param name="gameFrame">Detect collision with screen edges</param>
/// <param name="lifelost">Boolean variable to store if ball went below slider and a life was lost</param>
/// <param name="hit">Sound when collision occurs</param>
public void MoveLeft(int x, ref Ball ball, ref BricksManager brickManager, ref Rectangle gameFrame, ref bool lifelost, SoundEffectInstance hit)
{
//for every unit movement of the slider to the left
for (int i = 0; i < x; i++)
{
boundingBox.X--;
ball.UpdatePosition(brickManager, gameFrame, this, ref lifelost, hit, x); //note slow down factor, since UpdatePosition is called 'x' times
//this was an explicit bug fix. Slider used to cross over the ball
if (checkCollision(ball.getBoundingBox()))
{
boundingBox.X+=3;
}
}
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
gameState = GameState.TitleScreen;
lives = 3;
lifelost = false;
font = Content.Load<SpriteFont>("SpriteFont");
//sounds/music
fantomenk = Content.Load<SoundEffect>("FantomenK");
backgroundMusic = fantomenk.CreateInstance();
hit = Content.Load<SoundEffect>("hit");
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
//boundingBox for collision detection with screen edges
gameFrame = new Rectangle(0, 0, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height);
//bricks
brickTexture = Content.Load<Texture2D>("brick");
brickManager = new BricksManager(ref spriteBatch,ref brickTexture,ref graphics);
brickManager.generateBricks();
//ball
ballTexture = Content.Load<Texture2D>("ball");
ballPos = new Vector2(
(
graphics.GraphicsDevice.Viewport.Width - ballTexture.Width) / 2, //centre of the screen
graphics.GraphicsDevice.Viewport.Height * 3 / 4 - (ballTexture.Height + 10)
);
ball = new Ball(ref spriteBatch,
ref ballTexture,
ballPos,
new Vector2(0, 0), //velocity vector
timeDivideFactor);
//slider
sliderTexture = Content.Load<Texture2D>("slider");
sliderPos = new Vector2(
(
graphics.GraphicsDevice.Viewport.Width - sliderTexture.Width) / 2, //centre of the screen
graphics.GraphicsDevice.Viewport.Height*3 / 4
);
slider = new Slider(ref sliderTexture,ref spriteBatch, sliderPos);
}
/// <summary>
/// Function to move the ball, while checking for collisions with bricks, slider and screen edges(gameFrame)
/// </summary>
/// <param name="brickManager">BrickManager to check collision with all bricks</param>
/// <param name="gameFrame">BoundingBox of the gamescreen to detect collision with screen edges</param>
/// <param name="slider">Slider to detect collission</param>
/// <param name="lifelost">Boolean variable to see if the ball goes below the slider</param>
/// <param name="hit">SoundEffect when the ball collides</param>
/// <param name="extraTimeDivide">Used ONLY when we need to slow down movement of ball. Used in this game when the function is called by Slider</param>
public void UpdatePosition(BricksManager brickManager, Rectangle gameFrame, Slider slider, ref bool lifelost, SoundEffectInstance hit, int extraTimeDivide = 1)
{
//check for collision with every unit of movement for X, then for Y
for (int i = 0; i < Math.Abs(velocity.get().X); i++)
{
xMoveAheadByUnit(extraTimeDivide);
if (slider.checkCollision(this.boundingBox) || brickManager.DetectCollision(this.boundingBox) || !gameFrame.Contains(this.boundingBox))
{
hit.Play();
collideX(extraTimeDivide);
}
}
for (int i = 0; i < Math.Abs(velocity.get().Y); i++)
{
yMoveAheadByUnit(extraTimeDivide);
if (slider.checkCollision(this.boundingBox) || brickManager.DetectCollision(this.boundingBox) || !gameFrame.Contains(this.boundingBox))
{
hit.Play();
collideY(extraTimeDivide);
}
//when ball goes below the slider
if (gameFrame.Bottom - this.getPosition().Y < 50)
{
lifelost = true;
}
}
}
