Implementing the gg_silent_slalom project

In this section, we will examine the gg_silent_slalom project, which is an implementation of the ggez framework of the gg_silent_slalom game presented in the preceding chapter. Here, we will only examine the differences between the gg_ski project and the silent_slalom project.

As we saw in the preceding section, ggez handles input as events. In this project, two other key events are handled—Space and R:

KeyCode::Space => {
    self.input.started = true;
}
KeyCode::R => {
    self.input.started = false;
}

The spacebar is used to command the start of the race, and so it sets the started flag to true. The R key is used to reposition the ski at the beginning of the slope, and so it sets the started flag to false.

This flag is then used in the update method, as in the following code:

match self.mode {
    Mode::Ready => {
        if self.input.started {
            self.mode = Mode::Running;
        }
    }

When in Ready mode, instead of directly...