origin-byte-tron

.io style multiplayer survival bike racing game. Avoid collision with your and the enemies' trails

Play here

https://onchaintron.z6.web.core.windows.net/

Gameplay video

https://youtu.be/04DjrAhQPLU

Made with Origin Byte Sui Unity SDK

game clients use the Sui blockchain directly as a synchronization backend

	struct ScoreBoardElement has key, store {
		id: UID,
		player: address,
		score: u64
	}

	struct ScoreBoard has key {
		id: UID,
		scores: vector<ScoreBoardElement>
	}

	struct PlayerState has key {
		id: UID,
		position: Vector2,
		velocity: Vector2,
		// used to reject out of order updates
		sequenceNum: u64,
		isExploded: bool,
		createdTimestamp: u64,
		lastUpdateTimestamp: u64
	}

	struct PlayerStateUpdatedEvent has copy, drop {
		position: Vector2,
		velocity: Vector2,
		sequenceNum: u64,
		isExploded : bool,
		createdTimestamp: u64,
		lastUpdateTimestamp: u64
	}

• on publishing the module, a shared Scoreboard object is created, that only players with playerstate can modify
• every player owns a playerstate move object, a new one is minted for every new game sessions (when a player hits Play)
• game clients that have a valid playerstate initialized update their state constantly, using ImmediateReturn type move call transactions
• game clients listen to events emitted from the origin_byte_game::playerstate_module
  • note: Sui has not published a streaming (websocket based) rpc endpoint yet, so it's polling based using sui_getEventsByModule rpc method
  • enemy players are spawned, updated, destroyed based on these events
  • trail colliders are updated based on these events

Gameplay

• player can create / import wallet
• request airdrop if needed
  • note: you may be rate limited, check the official Sui faucet discord channel if it's working https://discord.com/channels/916379725201563759/971488439931392130
• hit play
• players spawn at random positions in the arena
• forward movement is automatic, turn with A/D or Left/Right arrow buttons
• survive as long as you can by avoiding trail colliders

Current issues

• Leaderboard is disabled right now! Writing to the scoreboard stops the event stream from the blockchain for several seconds. Requires further analysis of the move code and Sui transaction locks.
• video: https://youtu.be/FTq3Fjr_dBc

if you encounter issues, please report it with your Sui Address and browser log!