ore_api/state/
round.rs

1use serde::{Deserialize, Serialize};
2use steel::*;
3
4use crate::state::round_pda;
5
6use super::OreAccount;
7
8#[repr(C)]
9#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable, Serialize, Deserialize)]
10pub struct Round {
11    /// The round number.
12    pub id: u64,
13
14    /// The amount of SOL deployed in each square.
15    pub deployed: [u64; 25],
16
17    /// The hash of the end slot, provided by solana, used for random number generation.
18    pub slot_hash: [u8; 32],
19
20    /// The count of miners on each square.
21    pub count: [u64; 25],
22
23    /// The slot at which claims for this round account end.
24    pub expires_at: u64,
25
26    /// The amount of ORE in the motherlode.
27    pub motherlode: u64,
28
29    /// The account to which rent should be returned when this account is closed.
30    pub rent_payer: Pubkey,
31
32    /// The top miner of the round.
33    pub top_miner: Pubkey,
34
35    /// The amount of ORE to distribute to the top miner.
36    pub top_miner_reward: u64,
37
38    /// The total amount of SOL deployed in the round.
39    pub total_deployed: u64,
40
41    /// The total number of unique miners that played in the round.
42    pub total_miners: u64,
43
44    /// The total amount of SOL put in the ORE vault.
45    pub total_vaulted: u64,
46
47    /// The total amount of SOL won by miners for the round.
48    pub total_winnings: u64,
49}
50
51impl Round {
52    pub fn pda(&self) -> (Pubkey, u8) {
53        round_pda(self.id)
54    }
55
56    pub fn rng(&self) -> Option<u64> {
57        if self.slot_hash == [0; 32] || self.slot_hash == [u8::MAX; 32] {
58            return None;
59        }
60        let r1 = u64::from_le_bytes(self.slot_hash[0..8].try_into().unwrap());
61        let r2 = u64::from_le_bytes(self.slot_hash[8..16].try_into().unwrap());
62        let r3 = u64::from_le_bytes(self.slot_hash[16..24].try_into().unwrap());
63        let r4 = u64::from_le_bytes(self.slot_hash[24..32].try_into().unwrap());
64        let r = r1 ^ r2 ^ r3 ^ r4;
65        Some(r)
66    }
67
68    pub fn winning_square(&self, rng: u64) -> usize {
69        (rng % 25) as usize
70    }
71
72    pub fn top_miner_sample(&self, rng: u64, winning_square: usize) -> u64 {
73        if self.deployed[winning_square] == 0 {
74            return 0;
75        }
76        rng.reverse_bits() % self.deployed[winning_square]
77    }
78
79    pub fn calculate_total_winnings(&self, winning_square: usize) -> u64 {
80        let mut total_winnings = 0;
81        for (i, &deployed) in self.deployed.iter().enumerate() {
82            if i != winning_square {
83                total_winnings += deployed;
84            }
85        }
86        total_winnings
87    }
88
89    pub fn is_split_reward(&self, rng: u64) -> bool {
90        // One out of four rounds get split rewards.
91        let rng = rng.reverse_bits().to_le_bytes();
92        let r1 = u16::from_le_bytes(rng[0..2].try_into().unwrap());
93        let r2 = u16::from_le_bytes(rng[2..4].try_into().unwrap());
94        let r3 = u16::from_le_bytes(rng[4..6].try_into().unwrap());
95        let r4 = u16::from_le_bytes(rng[6..8].try_into().unwrap());
96        let r = r1 ^ r2 ^ r3 ^ r4;
97        r % 2 == 0
98    }
99
100    pub fn did_hit_motherlode(&self, rng: u64) -> bool {
101        rng.reverse_bits() % 625 == 0
102    }
103}
104
105account!(OreAccount, Round);
106
107#[cfg(test)]
108mod tests {
109    use solana_program::rent::Rent;
110
111    use super::*;
112
113    #[test]
114    fn test_rent() {
115        let size_of_round = 8 + std::mem::size_of::<Round>();
116        let required_rent = Rent::default().minimum_balance(size_of_round);
117        println!("required_rent: {}", required_rent);
118        assert!(false);
119    }
120}
ore_api/state/round.rs

ore_api/state/
round.rs
