Retruino

Retruino is a tiny retro gaming console for the arduino, it's based on the , what enables you to upload multiple retro games once and play them.

Creating your own games

It's very simple to create your own Retruino games.

First you need to download the repository, with that done, open the Retruino.ino file with the Arduino IDE. Now add a new file to the sketch called TestGame.h.

This game will be about moving a rectangle on the display using the joystick.

And here is how it looks like

#ifndef __TESTGAME_H__
#define __TESTGAME_H__

#include "Retruino.h"

class TestGame: public App {

    const uint32_t BLACK = 0x0;
    const uint32_t WHITE = 0xffffff;

    uint8_t position_x;
    uint8_t position_y;
    const uint8_t SIZE = 5;

    String getName() {
      // return name of the game
      return "TestGame";
    }

    void setup() {
      // fill display black
      display.fill(BLACK);
      // set start position at the center of the display
      position_x = display.HALF_WIDTH;
      position_y = display.HALF_HEIGHT;
    }

    void loop() {
      // erase old rectangle
      display.fillRect(position_x, position_y, SIZE, SIZE, BLACK);
      // update position based on joystick position
      position_x += input.readJoystickDirection(input.JOY_X);
      position_y += input.readJoystickDirection(input.JOY_Y);
      // draw rectangle at new position
      display.fillRect(position_x, position_y, SIZE, SIZE, WHITE);
      delay(16);
    }
    
} testGame;

#endif

To finish you need to add your app to the kernel, to do so add #include "TestGame.h" and kernel.addApp(testGame) to the Retruino.ino file.

Congrats! you've just created your first Retruino app.

NOTE: The Retruino needs the Arduios library installed in your Arduino IDE.