Uploading finished plugin !

plugin.yml

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+---
+# Base generated with ImagicalPlugCreator by Ad5001 (C) 2017 for Ad5001
+# link: https://ad5001.eu
+name: FloatingTexts
+author: Ad5001
+main: Ad5001\FloatingTexts\Main
+version: 1.0
+api: [3.0.0, 3.0.0-ALPHA3]
+commands:
+    createfloat:
+        description: Create a floating text !
+        usage: /createfloat <text...>
+        permission: floatingtexts.cmd
+permissions:
+    floatingtexts.cmd:
+        default: op
+...

src/Ad5001/FloatingTexts/Main.php

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+<?php
+# FloatingTexts
+# A new production from Ad5001 generated using ImagicalPlugCreator by Ad5001 (C) 2017
+
+namespace Ad5001\FloatingTexts;
+
+use pocketmine\Server;
+use pocketmine\Player;
+use pocketmine\plugin\PluginBase;
+use pocketmine\entity\Entity;
+
+
+
+class Main extends PluginBase implements \pocketmine\event\Listener {
+
+		/*
+		Called when the plugin enables
+		*/
+		public function onEnable() {
+			$this->getServer()->getPluginManager()->registerEvents($this, $this);
+			$this->sessions = [];
+		}
+
+		/*
+		Called when the plugin disables
+		*/
+		public function onDisable() {
+		}
+
+		/*
+		Called when one of the defined commands of the plugin has been called
+		@param     $sender        \pocketmine\command\CommandSender
+		@param     $cmd           \pocketmine\command\Command
+		@param     $label         mixed
+		@param     $args          array
+		return bool
+		*/
+		public function onCommand(\pocketmine\command\CommandSender $sender, \pocketmine\command\Command $cmd, $label, array $args): bool {
+			switch($cmd->getName()) {
+				case "createfloat":
+				if($sender instanceof Player) {
+					if(isset($args[0])) {
+						$text = implode(" ", $args);
+						$text = str_ireplace("\\n", "\n", $text);
+						$this->sessions[$sender->getName()] = $text;
+						$sender->sendMessage("Tap an entity !");
+					}
+				}
+				return true;
+				break;
+			}
+		}
+
+		/*
+		WHen a player hits an entity with a session, set his nametag
+		@param     $event    \pocketmine\event\entity\EntityDamageEvent
+		*/
+		public function onEntityDamage(\pocketmine\event\entity\EntityDamageEvent $event) {
+			if($event instanceof \pocketmine\event\entity\EntityDamageByEntityEvent) {
+				if($event->getDamager() instanceof Player &&
+				isset($this->sessions[$event->getDamager()->getName()])) {
+					$event->getEntity()->addEffect(\pocketmine\entity\Effect::getEffectByName("invisibility")->setDuration(99999)->setVisible(false));
+					$event->getEntity()->setNameTag($this->sessions[$event->getDamager()->getName()]);
+                	$event->getEntity()->setNameTagAlwaysVisible(true);
+            		$event->getEntity()->setNameTagVisible(true);
+            		$event->getEntity()->setImmobile(true);
+					$event->getEntity()->namedtag->isUsedToFloat = new \pocketmine\nbt\tag\StringTag("isUsedToFloat", "true");
+					$event->getEntity()->setNameTag($this->sessions[$event->getDamager()->getName()]);
+					$event->setCancelled();
+					unset($this->sessions[$event->getDamager()->getName()]);
+				} elseif(isset($event->getEntity()->namedtag->isUsedToFloat)) {
+					if(!($event->getDamager() instanceof Player && $event->getDamager()->isOp())) $event->setCancelled();
+				}
+			} elseif(isset($event->getEntity()->namedtag->isUsedToFloat)) {
+				$event->setCancelled();
+			}
+		}
+
+
+		/*
+		Checks when a level loads with floats to regive them the flags and effects.
+		@param     $event    \pocketmine\event\level\LevelLoadEvent
+		*/
+		public function onLevelLoad(\pocketmine\event\level\LevelLoadEvent $event) {
+			foreach ($event->getLevel()->getEntities() as $et) {
+				if(isset($event->getEntity()->namedtag->isUsedToFloat)) {
+					$event->getEntity()->addEffect(\pocketmine\entity\Effect::getEffectByName("invisibility")->setDuration(99999)->setVisible(false));
+                	$event->getEntity()->setNameTagAlwaysVisible(true);
+            		$event->getEntity()->setNameTagVisible(true);
+            		$event->getEntity()->setImmobile(true);
+				}
+			}
+		}
+}