v1 source realm
Package impl is the first rules engine for gno.land/r/g1lnkytfqcjwllws63gvf0mv9yt04aswy4y9amhm/shots.
Package impl is the first rules engine for gno.land/r/g1lnkytfqcjwllws63gvf0mv9yt04aswy4y9amhm/shots.
It owns the game state machine and pot rules; the state itself, and the coins, stay in the shots realm, reached through shots.Store.
Game: open --join--> playing --player wins--> won (pot paid out, closed)
Example
1^ |
2+----player loses-+ (entry fee stays in the pot)
3open --creator cancels, nobody played yet--> cancelled (pot refunded)
Session: each round the player shoots, then keeps. Every move is played out in the transaction that makes it, from 32 bytes derived from that block's timestamp (see entropy).
ENTROPY. The seed is SHA-256 of the block time (unix nanoseconds) and the kick's identity (game, session, kick number), so two kicks in one block still differ. The block time is not known when the player signs, but it is not secret either: the proposer chooses it within consensus bounds, and anything else running in the same transaction can read the result. In particular a transaction that makes a move and then, in a later message, reads the session and fails on a bad outcome reverts the whole kick, so a player can retry until they like the result (for the price of gas). Fine for play money; a commit-reveal or a VRF is needed before real stakes, and an upgraded implementation can switch without touching games or pots.
