begin testing new staking mechanism

src/processor/mine.rs

@@ -102,23 +102,23 @@ pub fn process_mine<'a, 'info>(
     sol_log(&format!("Base {}", reward));
 
     // Apply staking multiplier.
-    // The multiplier can range 1x to 2x. To receive the maximum multiplier, the stake balance must be
-    // greater than or equal to two years worth of rewards at the selected difficulty. Miners are only
-    // eligable for a multipler if their last stake deposit was more than one minute ago.
-    if proof
-        .last_stake_at
-        .saturating_add(ONE_MINUTE)
-        .le(&clock.unix_timestamp)
+    // If user has greater than or equal to the max stake on the network, they will receive 2x multiplier.
+    // Any less than this, and they will receive between 1x and 2x. Miners are only eligable for a multipler
+    // if their last stake deposit was more than one minute ago.
+    if config.max_stake.gt(&0)
+        && proof
+            .last_stake_at
+            .saturating_add(ONE_MINUTE)
+            .le(&clock.unix_timestamp)
     {
-        let upper_bound = reward.saturating_mul(ONE_YEAR);
         let staking_reward = proof
             .balance
-            .min(upper_bound)
+            .min(config.max_stake)
             .saturating_mul(reward)
-            .saturating_div(upper_bound);
+            .saturating_div(config.max_stake);
         reward = reward.saturating_add(staking_reward);
         sol_log(&format!("Staking {}", staking_reward));
-    };
+    }
 
     // Apply spam penalty
     let t = clock.unix_timestamp;

src/processor/stake.rs

@@ -4,8 +4,11 @@ use solana_program::{
 };
 
 use crate::{
-    instruction::StakeArgs, loaders::*, state::Proof, utils::AccountDeserialize, MINT_ADDRESS,
-    TREASURY_ADDRESS,
+    instruction::StakeArgs,
+    loaders::*,
+    state::{Config, Proof},
+    utils::AccountDeserialize,
+    MINT_ADDRESS, TREASURY_ADDRESS,
 };
 
 /// Stake deposits Ore into a miner's proof account to earn multiplier. Its responsibilies include:
@@ -26,10 +29,13 @@ pub fn process_stake<'a, 'info>(
     let amount = u64::from_le_bytes(args.amount);
 
     // Load accounts
-    let [signer, proof_info, sender_info, treasury_tokens_info, token_program] = accounts else {
+    let [signer, config_info, proof_info, sender_info, treasury_tokens_info, token_program] =
+        accounts
+    else {
         return Err(ProgramError::NotEnoughAccountKeys);
     };
     load_signer(signer)?;
+    load_config(config_info, true)?;
     load_proof(proof_info, signer.key, true)?;
     load_token_account(sender_info, Some(signer.key), &MINT_ADDRESS, true)?;
     load_token_account(
@@ -49,6 +55,11 @@ pub fn process_stake<'a, 'info>(
     let clock = Clock::get().or(Err(ProgramError::InvalidAccountData))?;
     proof.last_stake_at = clock.unix_timestamp;
 
+    // Update the max stake tracker
+    let mut config_data = config_info.data.borrow_mut();
+    let config = Config::try_from_bytes_mut(&mut config_data)?;
+    config.max_stake = config.max_stake.max(proof.balance);
+
     // Distribute tokens from signer to treasury
     solana_program::program::invoke(
         &spl_token::instruction::transfer(

src/state/bus.rs

@@ -8,7 +8,6 @@ use crate::{
 
 /// Bus accounts are responsible for distributing mining rewards.
 /// There are 8 busses total to minimize write-lock contention and allow for parallel mine operations.
-/// Every epoch, the bus account rewards counters are topped up to 0.25 ORE each (2 ORE split amongst 8 busses).
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, ShankAccount, Zeroable)]
 pub struct Bus {

src/state/config.rs

@@ -17,8 +17,11 @@ pub struct Config {
     /// The base reward rate paid out for a hash of minimum difficulty.
     pub base_reward_rate: u64,
 
-    /// The timestamp of the last reset
+    /// The timestamp of the last reset.
     pub last_reset_at: i64,
+
+    /// The largest stake account on the network.
+    pub max_stake: u64,
 }
 
 impl Discriminator for Config {