WIP: More efficient file locking for some player data operations

lib/filesystem.php

@@ -723,7 +723,7 @@ function slackemon_unlock_file( $filename ) {
 
 function slackemon_is_file_owned( $filename ) {
   global $_slackemon_file_locks;
-  return array_key_exists( md5( $filename ), $_slackemon_file_locks );
+  return array_key_exists( md5( $filename ), (array) $_slackemon_file_locks );
 }
 
 function slackemon_remove_file_locks() {

src/catching.php

@@ -238,7 +238,7 @@ function slackemon_get_catch_message( $spawn_ts, $action, $from_battle = false,
 function slackemon_do_catch( $spawn_ts, $catch_attempt_ts, $user_id = USER_ID, $battle_hash = false, $force_battle_result = '' ) {
 
   $spawn_data = slackemon_get_spawn_data( $spawn_ts, slackemon_get_player_region( $user_id ), $user_id );
-  $player_data = slackemon_get_player_data( $user_id );
+  $player_data = slackemon_get_player_data( $user_id, true );
 
   if ( $battle_hash ) {
     $battle_data = slackemon_get_battle_data( $battle_hash );
@@ -281,15 +281,15 @@ function slackemon_do_catch( $spawn_ts, $catch_attempt_ts, $user_id = USER_ID, $
 
     if ( ! $is_caught ) {
 
-      slackemon_add_xp( 25, $user_id ); // Pokemon fled, add 25 XP
+      $player_data->xp = slackemon_add_xp( 25, $player_data ); // Pokemon fled, add 25 XP
 
       foreach ( $player_data->pokedex as $pokedex_entry ) {
         if ( $spawn_data->pokedex == $pokedex_entry->id ) {
           if ( ! isset( $pokedex_entry->fled ) ) {
             $pokedex_entry->fled = 0;
           }
           $pokedex_entry->fled++;
-          slackemon_save_player_data( $player_data, $user_id );
+          slackemon_save_player_data( $player_data, $user_id, true );
         }
       }
 
@@ -302,14 +302,14 @@ function slackemon_do_catch( $spawn_ts, $catch_attempt_ts, $user_id = USER_ID, $
 
   // Does the wild Pokemon's HP / PP need adjusting from their battle?
   if ( $battle_hash ) {
-    $spawn_data->hp = $opponent_pokemon->hp;
+    $spawn_data->hp    = $opponent_pokemon->hp;
     $spawn_data->moves = $opponent_pokemon->moves;
     $spawn_data->battles->last_participated = $opponent_pokemon->battles->last_participated;
   }
 
   // Add entry to player's collection
   $spawn_data->is_battle_team = false;
-  $spawn_data->is_favourite = false;
+  $spawn_data->is_favourite   = false;
   unset( $spawn_data->trigger ); // We don't need this anymore
   unset( $spawn_data->users   ); // We don't need this anymore
   $player_data->pokemon[] = $spawn_data;
@@ -333,16 +333,16 @@ function slackemon_do_catch( $spawn_ts, $catch_attempt_ts, $user_id = USER_ID, $
         $xp_to_add += 50;
       }
 
-      slackemon_add_xp( $xp_to_add, $user_id );
+      $player_data->xp = slackemon_add_xp( $xp_to_add, $player_data );
       $pokedex_entry->caught++;
 
-      return slackemon_save_player_data( $player_data, $user_id );
+      return slackemon_save_player_data( $player_data, $user_id, true );
 
     }
   }
 
   // We should have returned above, but just in case we couldn't find the Pokedex entry for some reason...
-  return slackemon_save_player_data( $player_data, $user_id );
+  return slackemon_save_player_data( $player_data, $user_id, true );
 
 } // Function slackemon_do_catch
 

src/players.php

@@ -144,12 +144,22 @@ function slackemon_get_player_pokemon_data( $spawn_ts, $player_data = null, $use
 
 function slackemon_add_xp( $xp, $user_id = USER_ID ) {
 
-  $player_data = slackemon_get_player_data( $user_id );
-  $player_data->xp += $xp;
+  // Accept player data being sent through instead of a user ID, in which case the modified player data will be returned.
+  // This is useful if XP needs to be added and saved together, at the same time as other changes.
+  if ( is_object( $user_id ) ) {
+    $player_data = $user_id;
+    $return_player_data = true;
+  } else {
+    $player_data = slackemon_get_player_data( $user_id, true );
+    $return_player_data = false;
+  }
 
+  $player_data->xp += $xp;
   $player_data->xp = floor( $player_data->xp );
 
-  if ( slackemon_save_player_data( $player_data, $user_id ) ) {
+  if ( $return_player_data ) {
+    return $player_data;
+  } else if ( slackemon_save_player_data( $player_data, $user_id ) ) {
     return $player_data->xp;
   } else {
     return false;