feat: new Embassy logic for demolitions and alliance quitting

GameEngine/Alliance.php

@@ -376,7 +376,7 @@ class Alliance {
 				$database->deleteAlliance($session->alliance);
 				// log the notice
 				$database->insertAlliNotice($session->alliance, '<a href="spieler.php?uid=' . $UserData['id'] . '">' . addslashes($post['a_user']) . '</a> has quit the alliance.');
-				if($database->isAllianceOwner($UserData['id'])){
+				if($session->alliance && $database->isAllianceOwner($UserData['id']) == $session->alliance){
 				$newowner = $database->getAllMember2($session->alliance);
 				$newleader = $newowner['id'];
 				$q = "UPDATE " . TB_PREFIX . "alidata set leader = ".(int) $newleader." where id = ".(int) $session->alliance."";
@@ -435,15 +435,54 @@ class Alliance {
 			} elseif(!password_verify($post['pw'], $session->userinfo['password'])) {
 				$form->addError("pw2", PW_ERR);
 			} else {
-				$database->updateUserField($session->uid, 'alliance', 0, 1);
+			    // check whether this is not the founder leaving and if he is, see whether
-				if($database->isAllianceOwner($session->uid)){
+			    // his replacement has been selected
-				$newowner = $database->getAllMember2($session->alliance);
+			    if ($session->alliance && $database->isAllianceOwner($session->uid) == $session->alliance) {
-				$newleader = $newowner['id'];
+				    // check that we have a valid new founder
-				$q = "UPDATE " . TB_PREFIX . "alidata set leader = ".(int) $newleader." where id = ".(int) $session->alliance."";
+				    if (!isset($post['new_founder'])) {
-				$database->query($q);
+				        $form->addError("founder", 'founder was not selected');
-				$database->updateAlliPermissions($newleader, 1, 1, 1, 1, 1, 1, 1, 1, 1);
+				        return;
-				$this->updateMax($newleader);
+				    } else {
+				        $post['new_founder'] = (int) $post['new_founder'];
+				    }
+
+    				$members = $database->getAllMember($session->alliance);
+    				$validMemberFound = false;
+
+    				foreach ($members as $member) {
+    				    if ($member['id'] == $post['new_founder']) {
+    				        $validMemberFound = true;
+    				        break;
+    				    }
+    				}
+
+    				if (!$validMemberFound) {
+    				    $form->addError("founder2", 'founder is not valid');
+    				    return;
+    				}
+
+    				$newleader = $post['new_founder'];
+    				$q = "UPDATE " . TB_PREFIX . "alidata set leader = ".(int) $newleader." where id = ".(int) $session->alliance."";
+    				$_SESSION['alliance_user'] = 0;
+    				$database->query($q);
+    				$database->updateAlliPermissions($newleader, 1, 1, 1, 1, 1, 1, 1, 1, 1);
+    				$this->updateMax($newleader);
+    				
+    				// send the new founder an in-game message, notifying them of their election
+    				$database->sendMessage(
+    				    $newleader,
+    				    1,
+    				    'You are now leader of your alliance',
+    				    "Hi!\n\nThis is to inform you that the former leader of your alliance - <a href=\"".rtrim(SERVER, '/')."/spieler.php?uid=".(int) $session->uid."\">".$database->escape($session->username)."</a>, has decided to quit and elected you as his replacement. You now gain full access, administration and responsibilities to your alliance.\n\nGood luck!\n\nYours sincerely,\n<i>Server Robot :)</i>",
+    				    0,
+    				    0,
+    				    0,
+    				    0,
+    				    0,
+    				    true);
 				}
+
+				$database->updateUserField($session->uid, 'alliance', 0, 1);
 				$database->deleteAlliPermissions($session->uid);
 				// log the notice
 				$database->deleteAlliance($session->alliance);

GameEngine/Automation.php

@@ -4122,7 +4122,7 @@ $wallimg = "<img src=\"".GP_LOCATE."img/g/g3".$targettribe."Icon.gif\" height=\"
 				$pop=$this->getPop($type,$level-1);
 				$database->modifyPop($vil['vref'],$pop[0],1);
 				$this->procClimbers($database->getVillageField($vil['vref'],'owner'));
-				$database->delDemolition($vil['vref']);
+				$database->delDemolition($vil['vref'], true);
 			}
 		}
 		if(file_exists("GameEngine/Prevention/demolition.txt")) {

GameEngine/Database.php

@@ -1696,16 +1696,24 @@ class MYSQLi_DB implements IDbConnection {
 	}
 
 	function isAllianceOwner($id) {
-	    list($id) = $this->escape_input((int) $id);
+	    $id = (int) $id;
 
-		$q = "SELECT * from " . TB_PREFIX . "alidata where leader = ". $id;
+		$q = "SELECT id from " . TB_PREFIX . "alidata where leader = ". $id;
 		$result = mysqli_query($this->dblink,$q);
 		if(mysqli_num_rows($result)) {
-			return true;
+		    $result = mysqli_fetch_assoc($result);
+			return $result['id'];
 		} else {
 			return false;
 		}
 	}
+	
+	function countAllianceMembers($aid) {
+	    $aid = (int) $aid;
+	    $q = "SELECT Count(*) as Total from ".TB_PREFIX."users WHERE alliance = ".$aid;
+	    $membersCount = $this->query_return($q);
+	    return $membersCount[0]['Total'];
+	}
 
 	function aExist($ref, $type) {
         list($ref, $type) = $this->escape_input($ref, $type);
@@ -2131,13 +2139,84 @@ class MYSQLi_DB implements IDbConnection {
 		return $row["f" . $field];
 	}
 
+	function getSingleFieldTypeCount($uid, $field, $lvl = false, $lvlComparisonSign = '=') {
+	    $uid = (int) $uid;
+	    $field = (int) $field;
+	    $lvl = ($lvl === false ? $lvl : (int) $lvl);
+
+	    if (!in_array($lvlComparisonSign, ['=', '<', '>', '>=', '<=', '!='])) {
+	        $lvlComparisonSign = '=';
+	    }
+
+	    $q = "
+            SELECT
+            	Count(*) as Total
+            FROM
+            	".TB_PREFIX."fdata f
+            	LEFT JOIN ".TB_PREFIX."vdata v ON f.vref = v.wref
+                LEFT JOIN ".TB_PREFIX."users u ON v.owner = u.id
+            WHERE
+            	u.id = ".$uid."
+                AND
+                (
+                    (f1t = ".$field.($lvl !== false ? ' AND f1 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f2t = ".$field.($lvl !== false ? ' AND f2 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f3t = ".$field.($lvl !== false ? ' AND f3 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f4t = ".$field.($lvl !== false ? ' AND f4 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f5t = ".$field.($lvl !== false ? ' AND f5 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f6t = ".$field.($lvl !== false ? ' AND f6 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f7t = ".$field.($lvl !== false ? ' AND f7 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f8t = ".$field.($lvl !== false ? ' AND f8 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f9t = ".$field.($lvl !== false ? ' AND f9 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f10t = ".$field.($lvl !== false ? ' AND f10 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f11t = ".$field.($lvl !== false ? ' AND f11 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f12t = ".$field.($lvl !== false ? ' AND f12 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f13t = ".$field.($lvl !== false ? ' AND f13 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f14t = ".$field.($lvl !== false ? ' AND f14 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f15t = ".$field.($lvl !== false ? ' AND f15 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f16t = ".$field.($lvl !== false ? ' AND f16 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f17t = ".$field.($lvl !== false ? ' AND f17 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f18t = ".$field.($lvl !== false ? ' AND f18 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f19t = ".$field.($lvl !== false ? ' AND f19 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f20t = ".$field.($lvl !== false ? ' AND f20 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f21t = ".$field.($lvl !== false ? ' AND f21 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f22t = ".$field.($lvl !== false ? ' AND f22 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f23t = ".$field.($lvl !== false ? ' AND f23 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f24t = ".$field.($lvl !== false ? ' AND f24 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f25t = ".$field.($lvl !== false ? ' AND f25 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f26t = ".$field.($lvl !== false ? ' AND f26 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f27t = ".$field.($lvl !== false ? ' AND f27 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f28t = ".$field.($lvl !== false ? ' AND f28 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f29t = ".$field.($lvl !== false ? ' AND f29 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f30t = ".$field.($lvl !== false ? ' AND f30 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f31t = ".$field.($lvl !== false ? ' AND f31 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f32t = ".$field.($lvl !== false ? ' AND f32 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f33t = ".$field.($lvl !== false ? ' AND f33 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f34t = ".$field.($lvl !== false ? ' AND f34 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f35t = ".$field.($lvl !== false ? ' AND f35 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f36t = ".$field.($lvl !== false ? ' AND f36 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f37t = ".$field.($lvl !== false ? ' AND f37 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f38t = ".$field.($lvl !== false ? ' AND f38 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f39t = ".$field.($lvl !== false ? ' AND f39 '.$lvlComparisonSign.' '.$lvl : '').")
+                    OR (f40t = ".$field.($lvl !== false ? ' AND f40 '.$lvlComparisonSign.' '.$lvl : '').")
+                )";
+
+	    $result = mysqli_query($this->dblink,$q);
+	    $row = mysqli_fetch_array($result);
+	    return $row["Total"];
+	}
+	
 	function getFieldType($vid, $field) {
 	    list($vid, $field) = $this->escape_input((int) $vid, $field);
 
-		$q = "SELECT f" . $field . "t from " . TB_PREFIX . "fdata where vref = $vid";
+	    if ($field && $vid) {
-		$result = mysqli_query($this->dblink,$q);
+    		$q = "SELECT f" . $field . "t from " . TB_PREFIX . "fdata where vref = $vid";
-		$row = mysqli_fetch_array($result);
+    		$result = mysqli_query($this->dblink,$q);
-		return $row["f" . $field . "t"];
+    		$row = mysqli_fetch_array($result);
+    		return $row["f" . $field . "t"];
+	    } else {
+	        return 0;
+	    }
 	}
 	
 	function getFieldDistance($wid) {
@@ -2678,12 +2757,36 @@ class MYSQLi_DB implements IDbConnection {
 	function addDemolition($wid, $field) {
 	    list($wid, $field) = $this->escape_input((int) $wid, (int) $field);
 
-		global $building, $village;
+		global $building, $village, $session;
+
+		$fLevel = $this->getFieldLevel($wid,$field);
+
+		// check if we're not demolishing an Embassy at level 3
+		if ($fLevel == 3 && $this->getFieldType($wid,$field) == 18) {
+		    // check if this user is the founder of the alliance
+		    if ($session->alliance && $this->isAllianceOwner($session->uid) == $session->alliance) {
+		        // check if we have any other players in this alliance left
+		        $membersCount = $this->countAllianceMembers($session->alliance);
+		        if ($membersCount > 1) {
+		            // check if this player has only 1 last Embassy on level 3
+		            if ($this->getSingleFieldTypeCount($session->uid, 18, 3, '>=') == 1) {
+    		            // cannot demolish Embassy further until the player quits the alliance,
+    		            // as they are founder and there are still other players in the alliance,
+    		            // thus destroying Embassy would evict this player from the alliance
+    		            // and leave a new random leader
+    		            return 18;
+		            }
+		        }
+		    }
+		}
+
 		$q = "DELETE FROM ".TB_PREFIX."bdata WHERE field=$field AND wid=$wid";
 		mysqli_query($this->dblink,$q);
 		$uprequire = $building->resourceRequired($field,$village->resarray['f'.$field.'t'],0);
-		$q = "INSERT INTO ".TB_PREFIX."demolition VALUES (".$wid.",".$field.",".($this->getFieldLevel($wid,$field)-1).",".(time()+floor($uprequire['time']/2)).")";
+		$q = "INSERT INTO ".TB_PREFIX."demolition VALUES (".$wid.",".$field.",".($fLevel-1).",".(time()+floor($uprequire['time']/2)).")";
-		return mysqli_query($this->dblink,$q);
+		mysqli_query($this->dblink,$q);
+		
+		return true;
 	}
 
 
@@ -2706,13 +2809,86 @@ class MYSQLi_DB implements IDbConnection {
 	function finishDemolition($wid) {
 	    list($wid) = $this->escape_input((int) $wid);
 
-        	$q = "UPDATE " . TB_PREFIX . "demolition SET timetofinish=" . time() . " WHERE vref=" . $wid;
+    	$q = "UPDATE " . TB_PREFIX . "demolition SET timetofinish=" . time() . " WHERE vref=" . $wid;
-        	$result= mysqli_query($this->dblink,$q);
+    	$result= mysqli_query($this->dblink,$q);
-        	return mysqli_affected_rows();
+    	return mysqli_affected_rows();
-    	}  
+	}  
 
-	function delDemolition($wid) {
+	function delDemolition($wid, $checkEmbassy = false) {
-	    list($wid) = $this->escape_input((int) $wid);
+	    $wid = (int) $wid;
+
+	    if ($checkEmbassy) {
+	        // check if we've demolished an Embassy
+	        // and select the user it belonged to as well,
+	        // so we can potentially disconnect them from the alliance
+	        // and remove it - if they don't have any more Embassies
+	        //                 or if the they are founder and they have no more lvl 3+ Embassies
+	        $q = '
+            SELECT
+                u.id, u.alliance, d.buildnumber, d.lvl
+            FROM
+                '.TB_PREFIX.'demolition d
+                LEFT JOIN '.TB_PREFIX.'vdata v ON d.vref = v.wref
+                LEFT JOIN '.TB_PREFIX.'users u ON u.id = v.owner
+            WHERE d.vref = '.$wid;
+
+	        $res = mysqli_fetch_all(mysqli_query($this->dblink, $q), MYSQLI_ASSOC);
+	        foreach ($res as $key) {
+	            // if this building was demolished completely, there is no record of what it was
+	            // therefore, we need to check status of Embassies in case we've just demolished
+	            // an Embassy and should disconnect a player from an alliance
+	            if ($key['lvl'] == 0 && $key['alliance'] > 0 && $this->getSingleFieldTypeCount($key['id'], 18, 1, '>=') == 0) {
+	                // if we have no more Embassies and this player is in an alliance,
+	                // disconnect him from that alliance
+                    mysqli_query($this->dblink, 'UPDATE '.TB_PREFIX.'users SET alliance = 0 WHERE id = '.$key['id']);
+                    $_SESSION['alliance_user'] = 0;
+
+                    // notify them via in-game messaging
+                    $this->sendMessage(
+                        $key['id'],
+                        2,
+                        'You left the alliance',
+                        "Hi!\n\nThis is to inform you that due to a finished demolition of your last Embassy, you have now successfully left your alliance.\n\nYours sincerely,\n<i>Server Robot :)</i>",
+                        0,
+                        0,
+                        0,
+                        0,
+                        0,
+                        true);
+	            } else {
+    	            $fType = $this->getFieldType($wid, $key['buildnumber']);
+    
+    	            // we're actually demolishing an Embassy
+    	            if ($fType == 18) {
+    	                $isOwner = ($key['alliance'] && $this->isAllianceOwner($key['id']) == $key['alliance']);
+    
+    	                // in case the player is an alliance founder,
+    	                // we demolished a lvl 3 Embasy
+    	                // and there are no more lvl 3+ Embassies left for them
+    	                // disconnect them from the alliance and delete it
+    	                // because alliance can only be founded with a lvl 3+ Embassy
+    	                if ($isOwner && $key['lvl'] == 2 && $this->getSingleFieldTypeCount($key['id'], 18, 3, '>=') == 0) {
+    	                    mysqli_query($this->dblink, 'UPDATE '.TB_PREFIX.'users SET alliance = 0 WHERE id = '.$key['id']);
+    	                    $this->deleteAlliance($key['alliance']);
+    	                    $_SESSION['alliance_user'] = 0;
+    	                    
+    	                    // notify them via in-game messaging
+    	                    $this->sendMessage(
+    	                        $key['id'],
+    	                        2,
+    	                        'Your alliance was disbanded',
+    	                        "Hi!\n\nThis is to inform you that due to a finished demolition of your last Embassy at level 3, and the fact that you were the leader of your alliance, this alliance has been disbanded.\n\n\In order to found a new alliance, please build a level 3 Embassy again in one of your villages.\n\nYours sincerely,\n<i>Server Robot :)</i>",
+    	                        0,
+    	                        0,
+    	                        0,
+    	                        0,
+    	                        0,
+    	                        true);
+    	                }
+    	            }
+	            }
+	        }
+	    }
 
 		$q = "DELETE FROM " . TB_PREFIX . "demolition WHERE vref=" . $wid;
 		return mysqli_query($this->dblink,$q);

Templates/Alliance/quitalli.tpl

@@ -6,6 +6,12 @@ else {
 $aid = $session->alliance;
 }
 $allianceinfo = $database->getAlliance($aid);
+$isOwner      = ($aid && $database->isAllianceOwner($session->uid) == $aid);
+
+if ($isOwner) {
+	$membersCount = $database->countAllianceMembers($aid);
+}
+
 echo "<h1>".$allianceinfo['tag']." - ".$allianceinfo['name']."</h1>";
 include("alli_menu.tpl"); 
 ?>
@@ -20,9 +26,69 @@ include("alli_menu.tpl");
 <th colspan="2">Quit alliance</th>
 </tr>
 </thead><tbody>
-<tr><td colspan="2" class="info">In order to quit the alliance you have to enter your password again for safety reasons.</td></tr>
+<?php
-<tr><th>password:</th>
+	if ($isOwner && $membersCount > 0) {
-<td><input class="pass text" type="password" name="pw" maxlength="20"></td>
+?>
-</tr></tbody></table>
+<tr>
+	<td colspan="2" class="info">
+		Because you are the alliance founder, you need to select a replacement founder before you leave.
+	</td>
+</tr>
+<tr>
+	<th>
+		new&nbsp;founder:
+		</th>
+	<td>
+		<?php
+			$memberlist = $database->getAllMember($aid);
+		?>
+		<select name="new_founder" class="name dropdown">
+		<?php
+			$canQuit = false;
+           	foreach($memberlist as $member) {
+           		if (($member['id'] != $session->uid) && ($database->getSingleFieldTypeCount($member['id'], 18, 3, '>=') >= 1)) {
+               		echo "<option value=\"".$member['id']."\">".$member['username']."</option>";
+               		$canQuit = true;
+               	}
+            }
+
+            if (!$canQuit) {
+            	echo "<option value=\"-1\">no candidates!</option>";
+            }
+        ?>
+            </select>
+	</td>
+</tr>
+<?php
+	}
+?>
+<tr>
+	<td colspan="2" class="info">
+		<br />In order to quit the alliance you have to enter your password again for safety reasons.
+	</td>
+</tr>
+<tr>
+	<th>
+		password:
+		</th>
+	<td>
+		<input class="pass text" type="password" name="pw" maxlength="20">
+	</td>
+</tr>
+</tbody>
+</table>
+
+<?php
+	if (!$canQuit) {
+?>
+	<span style="color: red">
+		<br />
+		Unfortunately, there are no members of the alliance with Embassy at level 3 or more. In this case, you will not be able 
+		to reassign the founder role. You can still <a href="allianz.php?s=5">kick all members</a> and quit the alliance afterwards,
+		if you wish.
+	</span>
+	<?php
+        }
+    ?>
 
 <p><input type="image" value="ok" name="s1" id="btn_ok" class="dynamic_img" src="img/x.gif" alt="OK" /></form></p>

Templates/Build/15_1.tpl

@@ -15,9 +15,13 @@ if(!empty($_REQUEST["demolish"]) && $_REQUEST["c"] == $session->mchecker) {
 if($session->access != BANNED){
     if($_REQUEST["type"] != null) {
         $type = $_REQUEST['type'];
-        $database->addDemolition($village->wid,$type);
+        $demolish_permitted = $database->addDemolition($village->wid,$type);
-        $session->changeChecker();
+        if ($demolish_permitted === true) {
-        header("Location: build.php?gid=15&ty=$type&cancel=0&demolish=0");
+        	$session->changeChecker();
+        	header("Location: build.php?gid=15&ty=$type&cancel=0&demolish=0");
+        } else {
+        	header("Location: build.php?gid=15&ty=$type&nodemolish=".$demolish_permitted);
+        }
 		exit;
     }
 }else{
@@ -46,9 +50,21 @@ if($village->resarray['f'.$id] >= DEMOLISH_LEVEL_REQ) {
 }
 echo "</b>";
 } else {
+		if (isset($_GET['nodemolish'])) {
+			switch ($_GET['nodemolish']) {
+				case 18:
+					echo '<p style="color: #ff0000; text-align: left">
+					Because you are the founder of your alliance, demolition of a lvl 3 Embassy cannot be started.
+					You can still <a href="allianz.php?s=5">quit the alliance</a>, while selecting a new leader
+					in the &quot;quit alliance&quot; form.
+					</p>';
+					break;
+			}
+		}
+
         echo "
 <form action=\"build.php?gid=15&amp;demolish=1&amp;cancel=0&amp;c=".$session->mchecker."\" method=\"POST\" style=\"display:inline\">
-<select name=\"type\" class=\"dropdown\">";
+<select id=\"demolition_type\" name=\"type\" class=\"dropdown\">";
         for ($i=19; $i<=41; $i++) {
             $select=($i==$ty)? " SELECTED":"";
             if ($VillageResourceLevels['f'.$i] >= 1 && !$building->isCurrent($i) && !$building->isLoop($i)) {
@@ -61,7 +77,34 @@ if ($village->natar==1) {
                 echo "<option value=99".$select.">99. ".$building->procResType(40)." (lvl ".$VillageResourceLevels['f99'].")</option>";
             }
 }
-echo "</select><input id=\"btn_demolish\" name=\"demolish\" class=\"dynamic_img\" value=\"Demolish\" type=\"image\" src=\"img/x.gif\" alt=\"Demolish\" title=\"".DEMOLISH."\" /></form>";
+echo "</select><input id=\"btn_demolish\" name=\"demolish\" class=\"dynamic_img\" value=\"Demolish\" type=\"image\" src=\"img/x.gif\" alt=\"Demolish\" title=\"".DEMOLISH."\" onClick=\"javascript:return verify_demolition();\" /></form>";
 }
 }
 ?> 
+
+<script type="text/javascript">
+<!--
+	function verify_demolition() {
+		dType = document.getElementById('demolition_type');
+		if (dType.options[dType.selectedIndex].text.indexOf('Embassy (lvl 3)') > -1) {
+			// check if we really want to demolish a lvl 3 embassy
+			if (!window.confirm('WARNING!\n'
+				+ 'You are about to demolish an Embassy at lvl 3!\n\n'
+				+ 'If you are the founder of your alliance and this is your last Embassy and your alliance has no additional members, the alliance will be deleted.\n\n'
+				+ 'Click OK to confirm or Cancel to stop.')) {
+				return false;
+			}
+		} else if (dType.options[dType.selectedIndex].text.indexOf('Embassy (lvl 1)') > -1) {
+			// check if we really want to demolish a lvl 1 embassy
+			if (!window.confirm('WARNING!\n'
+				+ 'You are about to demolish an Embassy at lvl 1!\n\n'
+				+ 'If you are in an alliance and this is your last Embassy in game, you will automatically quit that alliance when the demolition is complete.\n\n'
+				+ 'Click OK to confirm or Cancel to stop.')) {
+				return false;
+			}
+		}
+		
+		return true;
+	}
+//-->
+</script>