oil_api/state/
round.rs

1use serde::{Deserialize, Serialize};
2use steel::*;
3
4use crate::state::round_pda;
5
6use super::OilAccount;
7
8#[repr(C)]
9#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable, Serialize, Deserialize, Default)]
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 account to which rent should be returned when this account is closed.
27    pub rent_payer: Pubkey,
28
29    /// The top miner of the round.
30    pub top_miner: Pubkey,
31
32    /// The amount of OIL to distribute to the top miner.
33    pub top_miner_reward: u64,
34
35    /// The total amount of SOL deployed in the round.
36    pub total_deployed: u64,
37
38    /// The total number of unique miners that played in the round.
39    pub total_miners: u64,
40
41    /// The total amount of SOL put in the OIL vault.
42    pub total_vaulted: u64,
43
44    /// The total amount of SOL won by miners for the round.
45    pub total_winnings: u64,
46
47    /// The amount of SOL in the gusher.
48    pub gusher_sol: u64,
49
50    /// The amount of pooled SOL deployed in each square.
51    pub deployed_pooled: [u64; 25],
52
53    /// The total amount of pooled SOL deployed in the round.
54    pub total_pooled: u64,
55
56    /// The SOL rewards allocated to the pool for this round.
57    pub pool_rewards_sol: u64,
58
59    /// The OIL rewards allocated to the pool for this round.
60    pub pool_rewards_oil: u64,
61
62    /// The number of unique miners who deployed as pooled this round.
63    pub pool_members: u64,
64
65    /// The cumulative SOL deployed by solo miners before pool deployed to each square.
66    pub pool_cumulative: [u64; 25],
67}
68
69impl Round {
70    pub fn pda(&self) -> (Pubkey, u8) {
71        round_pda(self.id)
72    }
73
74    pub fn rng(&self) -> Option<u64> {
75        if self.slot_hash == [0; 32] || self.slot_hash == [u8::MAX; 32] {
76            return None;
77        }
78        let r1 = u64::from_le_bytes(self.slot_hash[0..8].try_into().unwrap());
79        let r2 = u64::from_le_bytes(self.slot_hash[8..16].try_into().unwrap());
80        let r3 = u64::from_le_bytes(self.slot_hash[16..24].try_into().unwrap());
81        let r4 = u64::from_le_bytes(self.slot_hash[24..32].try_into().unwrap());
82        let r = r1 ^ r2 ^ r3 ^ r4;
83        Some(r)
84    }
85
86    pub fn winning_square(&self, rng: u64) -> usize {
87        (rng % 25) as usize
88    }
89
90    pub fn top_miner_sample(&self, rng: u64, winning_square: usize) -> u64 {
91        if self.deployed[winning_square] == 0 {
92            return 0;
93        }
94        rng.reverse_bits() % self.deployed[winning_square]
95    }
96
97    pub fn calculate_total_winnings(&self, winning_square: usize) -> u64 {
98        let mut total_winnings = 0;
99        for (i, &deployed) in self.deployed.iter().enumerate() {
100            if i != winning_square {
101                total_winnings += deployed;
102            }
103        }
104        total_winnings
105    }
106
107    pub fn is_split_reward(&self, rng: u64) -> bool {
108        // One out of four rounds get split rewards.
109        let rng = rng.reverse_bits().to_le_bytes();
110        let r1 = u16::from_le_bytes(rng[0..2].try_into().unwrap());
111        let r2 = u16::from_le_bytes(rng[2..4].try_into().unwrap());
112        let r3 = u16::from_le_bytes(rng[4..6].try_into().unwrap());
113        let r4 = u16::from_le_bytes(rng[6..8].try_into().unwrap());
114        let r = r1 ^ r2 ^ r3 ^ r4;
115        r % 2 == 0
116    }
117
118    pub fn did_hit_gusher_sol_only(&self, rng: u64) -> bool {
119        rng.reverse_bits() % 625 == 0
120    }
121}
122
123account!(OilAccount, Round);
124
125#[cfg(test)]
126mod tests {
127    use solana_program::rent::Rent;
128
129    use super::*;
130
131    #[test]
132    fn test_rent() {
133        let size_of_round = 8 + std::mem::size_of::<Round>();
134        let required_rent = Rent::default().minimum_balance(size_of_round);
135        println!("Round account size: {} bytes", size_of_round);
136        println!("Required rent: {} lamports ({} SOL)", required_rent, required_rent as f64 / 1_000_000_000.0);
137        
138        // Verify the account size matches expected size (1008 bytes for v4 with pool_cumulative field)
139        // 8 bytes discriminator + 1000 bytes struct = 1008 bytes total
140        assert_eq!(size_of_round, 1008, "Round account size should be 1008 bytes (v4 with pool_cumulative, no padding)");
141        
142        // Verify rent is reasonable (should be > 0 and < 10 SOL for a 816 byte account)
143        assert!(required_rent > 0, "Required rent should be greater than 0");
144        assert!(required_rent < 10_000_000_000, "Required rent should be less than 10 SOL");
145    }
146}
oil_api/state/round.rs

oil_api/state/
round.rs
