fn key_left(&mut self, screen: &mut Screen) {
        if self.is_not_cancelling() {
            self.cancel = Some(true);
            self.render(screen);
        }
    }
/// Should be triggered when LEFT key is pressed.
Should be triggered when LEFT key is pressed.
Should be triggered when LEFT key is pressed .
fn key_left(&mut self, screen: &mut Screen) {
        if self.is_not_cancelling() {
            self.cancel = Some(true);
            self.render(screen);
        }
    }
fn key_left ( & mut self , screen : & mut Screen ) { if self . is_not_cancelling ( ) { self . cancel = Some ( true ) ; self . render ( screen ) ; } }
Should be triggered when LEFT key is pressed.
Should be triggered when LEFT key is pressed .
&mut self
screen
&mut Screen
&mut self
screen
&mut Screen