Porting 2048 game to Odroid Go

What?

I recently got my hands on an Odroid Go Game Kit.

It's an amazing piece of tech that have these features in its small formfactor & affordable price:

As a quick project I ported the (in)famous 2048 game to it:

Where to Start

1. Setup Arduino for Odroid
2. Hello World Example

Setup Arduino software to support Odroid GO

I used nix-shell -p arduino to download and setup the IDE.

Odroid Go uses the ESP32 chip. To add it to the Arduino software: Nagivate to File > Preferences > Addtional Boards Manager Url.
Add add this url: https://dl.espressif.com/dl/package_esp32_index.json (mirrored here).

Navigate to Tools > Boards > Boards Manager > Search for: ESP32 and install it.

Hello World

Load this example:

#include <odroid_go.h>

void setup() {
    GO.begin();

    GO.lcd.println("Hello, ODROID-GO");
}

void loop() {
}

If everything works as expected you should see a hello message.

Porting 2048 game

The game code is similar to the above code with some fancy additions and multiplications. You can check it here.

At first I faced an issue with screen flickering while updating the state. Turns out I was clearning the screen & redrawing multiple times before updating the state.
Other than this issue, everything else went smoothly.

Note: I had to reflash the board to be able to boot back into the original firmware: esptool.py write_flash 0 odroid-go-firmware-20181001.img

Game Control

• Restart: B
• Undo: A
• Brightness control: Start + Up/Down
• Darkmode switch: Start + left

Excert from the control code: (full code here)

// undo: A
if (GO.BtnA.wasPressed()) {
    d.undo();

    return;
}

// restart: B
if (GO.BtnB.wasPressed()) {
    d.init();

    return;
}

// UP
if (GO.JOY_Y.wasAxisPressed() == 2) {
    d.log("u");

    Move::up();
    d.tick();

    return;
}

Read more

Check the Odroid Go Wiki for more info.