fix: expansion slots not being cleared up upon village destruction

#400

GameEngine/Admin/database.php

@@ -364,6 +364,21 @@ class adm_DB {
 			$q = "UPDATE ".TB_PREFIX."wdata SET occupied = 0 where id = $wref";
 			mysqli_query($this->connection, $q);
 
+            // clear expansion slots, if this village is an expansion of any other village
+            $q = "
+                UPDATE
+                    ".TB_PREFIX."vdata
+                SET
+                    exp1 = IF(exp1 = $wref, 0, exp1),
+                    exp2 = IF(exp2 = $wref, 0, exp2),
+                    exp3 = IF(exp3 = $wref, 0, exp3)
+                WHERE
+                    exp1 = $wref OR
+                    exp2 = $wref OR
+                    exp3 = $wref";
+
+            mysqli_query($this->connection, $q);
+
 			$getmovement = $database->getMovement(3,$wref,1);
 			foreach($getmovement as $movedata) {
 				$time = microtime(true);

GameEngine/Automation.php

@@ -3244,6 +3244,20 @@ class Automation {
             $q = "UPDATE ".TB_PREFIX."wdata set occupied = 0 where id = $wref";
             $database->query($q);
 
+            // clear expansion slots, if this village is an expansion of any other village
+            $q = "
+                UPDATE
+                    ".TB_PREFIX."vdata
+                SET
+                    exp1 = IF(exp1 = $wref, 0, exp1),
+                    exp2 = IF(exp2 = $wref, 0, exp2),
+                    exp3 = IF(exp3 = $wref, 0, exp3)
+                WHERE
+                    exp1 = $wref OR
+                    exp2 = $wref OR
+                    exp3 = $wref";
+            $database->query($q);
+
             $getprisoners = $database->getPrisoners($wref);
             foreach($getprisoners as $pris) {
                 $troops = 0;

sql_updates.txt

@@ -1,3 +1,8 @@
+-- 2.12.2017 -> new indexes
+ALTER TABLE `s1_vdata` ADD INDEX(`exp1`);
+ALTER TABLE `s1_vdata` ADD INDEX(`exp2`);
+ALTER TABLE `s1_vdata` ADD INDEX(`exp3`);
+
 -- 17.11.2017 -> query optimizations
 ALTER TABLE `s1_prisoners` DROP INDEX `from`, ADD INDEX `from-t11` (`from`, `t11`);
 ALTER TABLE `s1_enforcement` DROP INDEX `from`, ADD INDEX `from` (`from`, `hero`) USING BTREE;

var/db/struct.sql

@@ -1653,7 +1653,10 @@ KEY `clay` (`clay`),
 KEY `iron` (`iron`),
 KEY `crop` (`crop`),
 KEY `starv` (`starv`),
-KEY `loyalty` (`loyalty`)
+KEY `loyalty` (`loyalty`),
+KEY `exp1` (`exp1`),
+KEY `exp2` (`exp2`),
+KEY `exp3` (`exp3`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
 
 --