/// <summary>
/// Initializes a new instance of the Supply class.
/// </summary>
/// <param name="supplyKind">Specifies whether this supply is double-bullet supply or bomb supply.</param>
/// <param name="startX">X-coordinate of top-left point of the Image to show.</param>
public Supply(SupplyKind supplyKind, int startX)
{
// Get the kind of this supply.
this.SupplyKind = supplyKind;
// Initialize a new Image to show.
this.SupplyImage = new Image();
// Set the coordinate of the image to show.
Canvas.SetLeft(this.SupplyImage, startX);
Canvas.SetTop(this.SupplyImage, Settings.SupplyStartY);
// Configure image source and rectangle collider for this supply.
if (supplyKind == SupplyKind.BulletSupply)
{
this.SupplyImage.Source = BulletSupplyImage;
rectangleCollider = new Rectangle2D(startX + Settings.BulletSupplyRectangleColliderLeftOffset,
Settings.SupplyStartY + Settings.BulletSupplyRectangleColliderTopOffset,
Settings.BulletSupplyRectangleColliderWidth,
Settings.BulletSupplyRectangleColliderHeight);
}
else
{
this.SupplyImage.Source = BombSupplyImage;
rectangleCollider = new Rectangle2D(startX + Settings.BombSupplyRectangleColliderLeftOffset,
Settings.SupplyStartY + Settings.BombSupplyRectangleColliderTopOffset,
Settings.BombSupplyRectangleColliderWidth,
Settings.BombSupplyRectangleColliderHeight);
}
}
/// <summary>
/// Generates next supply.
/// </summary>
private void GenerateSupply()
{
// Determine which kind of supply to generate.
double r = random.NextDouble();
SupplyKind nextSupplyKind = r < 0.5 ? SupplyKind.BulletSupply : SupplyKind.BombSupply;
// Calculate its startX.
int startX = random.Next(Settings.SupplyLeftMin, Settings.SupplyLeftMax);
// Generate the supply.
supply = new Supply(nextSupplyKind, startX);
// Add it to the main scene.
mainScene.Children.Add(supply.SupplyImage);
}
