Time for action – tank animation

In order to animate our tank, we perform the following steps:

1. 1. In the constructor of the Tank class, add the following two lines to the end of the method:

   baseTurretTransform = model.Bones["turret_geo"].Transform;
   baseGunTransform = model.Bones["canon_geo"].Transform;

2. 2. In the Draw() method of the Tank class, add the following before the call to model.CopyAbsoluteBoneTransformsT o():

   model.Bones["turret_geo"].Transform =
       Matrix.CreateRotationY(TurretRotation) * baseTurretTransform;
   
   model.Bones["canon_geo"].Transform =
       Matrix.CreateRotationX(gunElevation) * baseGunTransform;

3. 3. In the Update() method of the TankBattlesGame class, add some temporary code to allow us to animate the tank with the keyboard. Place this code after the existing camera movement code, inside the if block that checks for (this.IsActive) — directly after the current mouse position is stored in previousMo use:

   // Begin temporary code
   KeyboardState ks = Keyboard.GetState();
   if (ks...