Merge pull request #341 from TheSerapher/issue-308

Adding dynamic block value support in PPS

cronjobs/findblock.php

@@ -63,6 +63,7 @@ if (empty($aTransactions['transactions'])) {
         verbose("Failed" . "\n");
       }
     }
+    exit;
   }
 }
 

cronjobs/pps_payout.php

@@ -40,7 +40,16 @@ if ( $bitcoin->can_connect() === true ){
 }
 
 // Value per share calculation
-$pps_value = number_format(round(50 / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+if ($config['reward_type'] != 'block') {
+$pps_value = number_format(round($config['reward'] / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+} else {
+  // Try to find the last block value and use that for future payouts, revert to fixed reward if none found
+  if ($aLastBlock = $block->getLast()) {
+    $pps_value = number_format(round($aLastBlock['amount'] / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+  } else {
+    $pps_value = number_format(round($config['reward'] / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+  }
+}
 
 // Find our last share accounted and last inserted share for PPS calculations
 $iPreviousShareId = $setting->getValue('pps_last_share_id');

public/include/config/global.inc.dist.php

@@ -177,12 +177,33 @@ $config['difficulty'] = 20;
 /**
  * This defines how rewards are paid to users.
  *
+ * Explanation:
+ *
+ *  Proportional Payout System
+ *   When running a pool on fixed mode, each block will be paid
+ *   out as defined in `reward`. If you wish to pass transaction
+ *   fees inside discovered blocks on to user, set this to `block`.
+ *   This is really helpful for altcoins with dynamic block values!
+ *
+ *  PPS Payout System
+ *   If set to `fixed`, all PPS values are based on the `reward` setting.
+ *   If you set it to `block` you will calculate the current round based
+ *   on the previous block value. The idea is to pass the block of the
+ *   last round on to the users. If no previous block is found, PPS value
+ *   will fall back to the fixed value set in `reward`. Ensure you don't
+ *   overpay users in the first round!
+ *
  * Available options:
+ *  reward_type:
  *   fixed : Fixed value according to `reward` setting
  *   block : Dynamic value based on block amount
+ *  reward:
+ *   float value : Any value of your choice but should reflect base block values
  *
  * Default:
- *   fixed
+ *   reward_type  = `fixed`
+ *   reward       = 50
+ *   
  **/
 $config['reward_type'] = 'fixed';
 $config['reward'] = 50;

public/include/smarty_globals.inc.php

@@ -36,7 +36,6 @@ $aGlobal = array(
   'hashrate' => $iCurrentPoolHashrate,
   'nethashrate' => $dNetworkHashrate,
   'sharerate' => $iCurrentPoolShareRate,
-  'ppsvalue' => number_format(round(50 / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12),
   'workers' => $iCurrentActiveWorkers,
   'roundshares' => $aRoundShares,
   'fees' => $config['fees'],
@@ -59,6 +58,18 @@ $aGlobal = array(
   )
 );
 
+// Special calculations for PPS Values based on reward_type setting and/or available blocks
+if ($config['reward_type'] != 'block') {
+  $aGlobal['ppsvalue'] = number_format(round(50 / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+} else {
+  // Try to find the last block value and use that for future payouts, revert to fixed reward if none found
+  if ($aLastBlock = $block->getLast()) {
+    $aGlobal['ppsvalue'] = number_format(round($aLastBlock['amount'] / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+  } else {
+    $aGlobal['ppsvalue'] = number_format(round($config['reward'] / (pow(2,32) * $dDifficulty) * pow(2, $config['difficulty']), 12) ,12);
+  }
+}
+
 // We don't want these session infos cached
 if (@$_SESSION['USERDATA']['id']) {
   $aGlobal['userdata'] = $_SESSION['USERDATA']['id'] ? $user->getUserData($_SESSION['USERDATA']['id']) : array();