checkpoint

api/src/state/board.rs

@@ -6,7 +6,7 @@ use super::OreAccount;
 
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
-pub struct Game {
+pub struct Board {
     /// The current round number.
     pub round_id: u64,
 
@@ -35,9 +35,18 @@ pub struct Round {
     /// The slot at which claims for this round account end.
     pub expires_at: i64,
 
+    /// The amount of ORE in the motherlode.
+    pub motherlode: u64,
+
+    /// The account to which rent should be returned when this account is closed.
+    pub rent_payer: Pubkey,
+
     /// The top miner of the round.
     pub top_miner: Pubkey,
 
+    /// The amount of ORE to distribute to the top miner.
+    pub top_miner_reward: u64,
+
     /// The total amount of SOL deployed in the round.
     pub total_deployed: u64,
 
@@ -48,23 +57,66 @@ pub struct Round {
     pub total_winnings: u64,
 }
 
-#[repr(C)]
-#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
-pub struct Move {
-    /// The authority of the move.
-    pub authority: Pubkey,
+impl Round {
+    pub fn rng(&self) -> u64 {
+        if self.slot_hash == [0; 32] {
+            return 0;
+        }
+        let r1 = u64::from_le_bytes(self.slot_hash[0..8].try_into().unwrap());
+        let r2 = u64::from_le_bytes(self.slot_hash[8..16].try_into().unwrap());
+        let r3 = u64::from_le_bytes(self.slot_hash[16..24].try_into().unwrap());
+        let r4 = u64::from_le_bytes(self.slot_hash[24..32].try_into().unwrap());
+        let r = r1 ^ r2 ^ r3 ^ r4;
+        r
+    }
 
-    /// The amount of SOL deployed in each square.
-    pub deployed: [u64; 25],
+    pub fn winning_square(&self, rng: u64) -> usize {
+        (rng % 25) as usize
+    }
 
-    /// The round number.
-    pub round_id: u64,
+    pub fn top_miner_sample(&self, rng: u64, winning_square: usize) -> u64 {
+        if self.deployed[winning_square] == 0 {
+            return 0;
+        }
+        rng.reverse_bits() % self.deployed[winning_square]
+    }
+
+    pub fn calculate_total_winnings(&self, winning_square: usize) -> u64 {
+        let mut total_winnings = 0;
+        for (i, &deployed) in self.deployed.iter().enumerate() {
+            if i != winning_square {
+                total_winnings += deployed;
+            }
+        }
+        total_winnings
+    }
+
+    pub fn did_motherlode_hit(&self, rng: u64) -> bool {
+        rng.reverse_bits() % 625 == 0
+    }
 }
 
-// impl Board {
-//     pub fn pda(&self) -> (Pubkey, u8) {
-//         board_pda()
-//     }
-// }
+impl Board {
+    pub fn pda(&self) -> (Pubkey, u8) {
+        board_pda()
+    }
+}
 
-// account!(OreAccount, Board);
+account!(OreAccount, Board);
+
+account!(OreAccount, Round);
+
+#[cfg(test)]
+mod tests {
+    use solana_program::rent::Rent;
+
+    use super::*;
+
+    #[test]
+    fn test_rent() {
+        let size_of_round = 8 + std::mem::size_of::<Round>();
+        let required_rent = Rent::default().minimum_balance(size_of_round);
+        println!("required_rent: {}", required_rent);
+        assert!(false);
+    }
+}