File content as of revision 23:ecb74e52163d:

/*
ELEC2645 Project
Options.cpp
Class file for Options in Donkey Kong game.
*/

#include "Options.h"

// Constructor - Doesn't require any setup.
Options::Options()
{

}

// Deconstructor - Doesn't require any setup.
Options::~Options()
{

}

// External variables to be used inside and out of the class.
float opt_brightness = 0.5;
float opt_contrast = 0.396;
int opt_volume = 1;

// Runs and controls all the options functions.
void Options::options_run(Gamepad &pad, N5110 &lcd) {
    wait_ms(250);
    while (pad.check_event(Gamepad::BACK_PRESSED) == false) { // Continues to show this screen until BACK button pressed.
        //printf("Options State");
        lcd.clear();
        lcd.printString("Options",21,0);
        options_brightness(pad, lcd); // Calls brightness function within class.
        options_contrast(pad, lcd); // Calls contrast function within class.
        options_volume(pad, lcd); // Calls volume function within class.
        lcd.refresh(); // Reloads screen on every cycle, controlled by fps. Default set to 24.
        wait_ms(1.0f/24);
    }
}

// Toggles the backlight on LCD screen, ON/OFF based on button inputs. 
void Options::options_brightness(Gamepad &pad, N5110 &lcd) {
    if (pad.check_event(Gamepad::B_PRESSED) == true) { // If B is pressed, will turn off backlight.
        opt_brightness = 0;
    }
    if (pad.check_event(Gamepad::A_PRESSED) == true) { // If A is pressed, will turn on backlight.
        opt_brightness = 0.5;
    }
    lcd.setBrightness(opt_brightness);
    lcd.printString("A/B = BackLite",0,2);
}

// Controls the LCD screen contrast based on gamepad potentiometer value.
void Options::options_contrast(Gamepad &pad, N5110 &lcd) {
    opt_contrast = pad.read_pot(); // Gets potentiometer value from gamepad and assigns it to a value.
    lcd.setContrast(opt_contrast); // Uses set value to change actual LCD contrast.
    lcd.printString("Pot = Contrast",0,3);
    printf("Contrast = %f", opt_contrast);
}

// Toggles the volume for the game, ON/OFF based on button inputs.
void Options::options_volume(Gamepad &pad, N5110 &lcd) {
    if (pad.check_event(Gamepad::Y_PRESSED) == true) { // If Y is pressed, will disable volume.
        opt_volume = 0;
    }
    if (pad.check_event(Gamepad::X_PRESSED) == true) { // If X is press, will enable volume.
        opt_volume = 1;
        pad.tone(2400, 0.2); // Plays a set of beeps to confirm the volume is on. 
        wait_ms(200);
        pad.tone(2400, 0.2);
        wait_ms(200);
        pad.tone(2400, 0.2);
    }
    lcd.printString("X/Y = Volume",0,4);
    if (opt_volume == 0) { // Shows on screen the current volume state.
        lcd.printString("Off",36,5);
    } else {
        lcd.printString("On",36,5);
    }
}