Asobi Arena Demo (Defold)

Top-down arena shooter demo for the Asobi game backend, built with Defold and the asobi-defold SDK.

Quick Start

Prerequisites

• Defold Editor or bob.jar CLI
• An Asobi backend running (local or remote)

Install SDK

Symlink the asobi-defold SDK into the project:

ln -s /path/to/asobi-defold/asobi asobi

Build & Run

java -jar bob.jar --platform x86_64-linux resolve build
chmod +x build/x86_64-linux/dmengine
./build/x86_64-linux/dmengine

Or open the project in the Defold Editor and press F5.

Server Selection

On launch you choose which server to connect to:

• LOCAL — localhost:8085 (for asobi_arena_lua via Docker Compose or a local Erlang node)
• PLAY ONLINE — play.asobi.dev (production server)

Game Flow

1. Server Select — Choose local or online server
2. Login — Register or log in with username and password
3. Lobby — Connect via WebSocket, queue for matchmaking
4. Countdown — 3-2-1 before arena starts
5. Arena — 90-second rounds, shoot enemies, collect kills
6. Boon Pick — Top 3 players choose an upgrade
7. Voting — All players vote on next round's modifier
8. Results — Standings, leaderboard, auto-queue for next match

Controls

Input	Action
W / A / S / D	Move up / left / down / right
Mouse	Aim
Left Click	Shoot
Tab	Switch input field (login)
Enter	Confirm (login)

Architecture

Single collection with a controller script managing game state transitions. GUI screens (server select, login, lobby, countdown, arena, boon pick, voting, results) are toggled via enable/disable. The arena renders ship sprites and cannonball projectiles using textures from the ships atlas.

Server-authoritative: the client sends inputs at 60fps, the server responds with game state at 10Hz. All collision, damage, and kill logic runs server-side.

Key Files

File	Purpose
main/controller.script	State machine, input routing, WebSocket callbacks
main/game_config.lua	Shared config, colors, cross-GUI data
arena/arena.gui_script	Arena rendering (ships, projectiles, HUD)
boon/boon.gui_script	Boon card selection UI
vote/vote.gui_script	Modifier voting with live tallies
server/server.gui_script	Server selection (local/online)
asobi/	SDK (symlinked) — HTTP client, WebSocket, API modules

Assets

File	Description
assets/player.png	Player ship sprite (52x53)
assets/enemy.png	Enemy ship sprite (52x53)
assets/cannonball.png	Projectile sprite (8x8)
assets/ship_player.png	Player sprite sheet (3x4 grid)
assets/ship_enemy.png	Enemy sprite sheet (3x4 grid)
assets/ships.atlas	Defold atlas combining all sprites