Time for action – utilizing Terrain.fx

1. 1. In the Terrain.cs class file, add the following to the Draw() method, right after setting CurrentTechnique for the effect:

   effect.Parameters["terrainTexture1"].SetValue(terrainTexture);

2. 2. In the BuildVertexBuffer() method of the Terrain class, add the following right after the position of the vertex is set inside the loop:

   vertices[x + (z * width)].TextureCoordinate =
       new Vector2((float)x / textureScale, (float)z / textureScale);

3. 3. Execute the program and view the textured terrain, as shown in the following screenshot:

   

What just happened?

We now have a simple grass texture mapped to our terrain. It is still a bit difficult to make out the features of the landscape, but they are certainly more visible than when the whole thing was just a red blob. We will come back to improving the look of our terrain in Chapter 8, Tank Battles – Ending the War.