The code that we created until this point creates a basic scene with our robot and a background. Now, it's time to bring our robot to life using the power of animation.
Animation actually has two components. First, the sprite itself will appear to animate because we will play each frame of the sprite in sequence. If you use the stock files that were made for this book, you will see the robot's eyes and arms move.
The second component is movement across the screen. It is the combination of the robot's horizontal movement and body movements that will make a convincing animation.
As with rendering, we start by adding an Update call to the GameLoop function. Modify the GameLoop function in RoboRacer.cpp:
void GameLoop(const float p_deltatTime)
{
Update(p_deltatTime);
Render();
}We now have two new features:
We added
p_deltaTimeas a parameter. This represents the amount of time that has passed in milliseconds since the last frame. We will see how...