//bullets hit shield elements
private bool BulletShieldElementHitTest(Bullet thisBullet, shieldElement thisShieldElement)
{
Rect recBullet = new Rect(Canvas.GetLeft(thisBullet), Canvas.GetTop(thisBullet), thisBullet.ActualWidth, thisBullet.ActualHeight);
Rect recShieldElement = new Rect(Canvas.GetLeft(thisShieldElement), Canvas.GetTop(thisShieldElement), 10, 20);
return recBullet.IntersectsWith(recShieldElement);
}
//when a shield element gets hit it loses 1 of its 3 lives and gets redrawn
private void reDrawShield(shieldElement thisShieldElement)
{
switch (thisShieldElement.intLives)
{
case (3): thisShieldElement.imgShield.Source = bitshielda; break;
case (2): thisShieldElement.imgShield.Source = bitshieldb; break;
case (1): thisShieldElement.imgShield.Source = bitshieldc; break;
}
}
//Bombs Hit shield elements
private bool BombShieldElementHitTest(Bomb thisBomb, shieldElement thisShieldElement)
{
Rect recBomb = new Rect(Canvas.GetLeft(thisBomb), Canvas.GetTop(thisBomb), thisBomb.ActualWidth, thisBomb.ActualHeight);
Rect recShieldElement = new Rect(Canvas.GetLeft(thisShieldElement), Canvas.GetTop(thisShieldElement), 10, 20);
return recBomb.IntersectsWith(recShieldElement);
}
//The draw shields method
private void drawShields()
{
//there are 4 shield 0 to 3
for (int intShieldNo = 0; intShieldNo < 4; intShieldNo++)
{
//each shield has 4 rows 0 to 3
for (int row = 0; row < 4; row++)
{
//each row has 11 shield elements which are user controls
for (int x = 0; x < 11; x++)
{
//provided the element is not in the cut out area at the bottom centre of the shield,
//create the shield element
if (!((row>1)&&(x>2)&&(x<8)))
{
shieldElement thisShieldElement = new shieldElement();
Shields.Add(thisShieldElement);
cnvSpace.Children.Add(thisShieldElement);
//135 offset, shields at 125px interval, each element 7px width.
Canvas.SetLeft(thisShieldElement, 135+intShieldNo*125+x*7);
//475 offset from top of screen 10 height
Canvas.SetTop(thisShieldElement, 475+row*10);
}
}
}
}
}