XNA 4.0 Game Development by Example Beginner's Guide

Time for action – GamePiece class methods – part 4 – GetSourceRect

1. Add the GetSourceRect() method to the GamePiece class:

     public Rectangle GetSourceRect()
     {
         int x = textureOffsetX;
         int y = textureOffsetY;
           
         if (pieceSuffix.Contains("W"))
             x += PieceWidth + texturePaddingX;
   
         y += (Array.IndexOf(PieceTypes, pieceType) * 
              (PieceHeight + texturePaddingY));
   
   
         return new Rectangle(x, y, PieceWidth, PieceHeight);
     }

What just happened?

Initially, the x and y variables are set to the textureOffsets that are listed in the GamePiece class declaration. This means they will both start with a value of one.

Because the sprite sheet is organized with a single type of pipe on each row, the x coordinate of the Rectangle is the easiest to determine. If the pieceSuffix