Add a code to fly

build.gradle

@@ -19,7 +19,7 @@ repositories {
 }
 
 dependencies {
-    compileOnly("io.papermc.paper:paper-api:1.21.3-R0.1-SNAPSHOT")
+    compileOnly("io.papermc.paper:paper-api:1.21.8-R0.1-SNAPSHOT")
 }
 
 tasks {
@@ -27,7 +27,7 @@ tasks {
         // Configure the Minecraft version for our task.
         // This is the only required configuration besides applying the plugin.
         // Your plugin's jar (or shadowJar if present) will be used automatically.
-        minecraftVersion("1.21.3")
+        minecraftVersion("1.21.8")
     }
 }
 

src/main/java/org/walruslab/fmtm/plugin/ClickListener.java

@@ -5,6 +5,7 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
 import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerSwapHandItemsEvent;
 import org.walruslab.fmtm.core.FmtmCore;
 
 public class ClickListener implements Listener {
@@ -25,9 +26,28 @@ public class ClickListener implements Listener {
             var player = e.getPlayer();
 
             if (player.getScoreboardTags().contains("fmtm") && item.getType() == Material.DIAMOND_SWORD) {
-                core.launch(player);
+                if (player.isSneaking()) {
+                    var curVel = player.getVelocity();
+                    var dir = player.getEyeLocation().getDirection();
+                    var newVel = curVel.length() < 10.0 ? curVel.add(dir.multiply(30.0)) : dir.multiply(curVel.length() * 3.0);
+                    player.setVelocity(newVel);
+                } else {
+                    core.launch(player);
+                }
             }
 
         }
     }
+
+    @EventHandler
+    public void onHandSwap(PlayerSwapHandItemsEvent e) {
+        var item = e.getOffHandItem();
+
+        var player = e.getPlayer();
+
+        if (player.getScoreboardTags().contains("fmtm") && item.getType() == Material.DIAMOND_SWORD) {
+            player.setVelocity(player.getVelocity().setY(0.2));
+            e.setCancelled(true);
+        }
+    }
 }