feat(pocket-base): start flying on flight portal entry

src/main/java/games/dmg/spigotbase/BaseFlightController.java

@@ -107,7 +107,18 @@ final class BaseFlightController implements Runnable, Listener {
     }
 
     void grantPocketPortalFlight(Player player, UUID ownerId) {
+        if (player.getGameMode() != GameMode.SURVIVAL || pocketBases == null
+                || !pocketBases.ownerForPocketWorld(player.getWorld().getUID())
+                    .filter(ownerId::equals).isPresent()) {
+            return;
+        }
         portalFlight.put(player.getUniqueId(), ownerId);
+        if (applyPocketFlight(player, ownerId)) {
+            player.setFlying(true);
+            player.sendMessage(ChatColor.GREEN + "Pocket dimension flight enabled!");
+        } else {
+            portalFlight.remove(player.getUniqueId());
+        }
     }
 
     @Override
@@ -220,14 +231,14 @@ final class BaseFlightController implements Runnable, Listener {
         }
     }
 
-    private void applyPocketFlight(Player player, UUID ownerId) {
+    private boolean applyPocketFlight(Player player, UUID ownerId) {
         PocketBaseState pocket = pocketBases.state(ownerId);
         boolean ownerFlight = ownerId.equals(player.getUniqueId())
             && pocket.flightUnlocked() && pocket.flightEnabled();
         boolean temporaryFlight = ownerId.equals(portalFlight.get(player.getUniqueId()));
         if ((!ownerFlight && !temporaryFlight) || pocket.level() < 1) {
             removeGrantedFlight(player);
-            return;
+            return false;
         }
         int halfSize = pocketBases.policy().size(pocket.level()) / 2;
         int x = player.getLocation().getBlockX();
@@ -237,7 +248,7 @@ final class BaseFlightController implements Runnable, Listener {
                 || z < -halfSize - POCKET_FLIGHT_BUFFER
                 || z >= halfSize + POCKET_FLIGHT_BUFFER) {
             removeGrantedFlight(player);
-            return;
+            return false;
         }
         if (!player.getAllowFlight()) {
             player.setAllowFlight(true);
@@ -257,6 +268,7 @@ final class BaseFlightController implements Runnable, Listener {
         } else {
             warned.remove(player.getUniqueId());
         }
+        return true;
     }
 
     private void clearPortalFlight(Player player) {

src/main/java/games/dmg/spigotbase/PocketBaseController.java

@@ -246,7 +246,8 @@ final class PocketBaseController implements Listener, Runnable {
                 if (isIntact(portal, Material.GOLD_BLOCK)
                         && PocketPortalGeometry.isInterior(
                             portal, position(destination)
-                        )) {
+                        ) && (event.getFrom() == null
+                            || !PocketPortalGeometry.isInterior(portal, position(event.getFrom())))) {
                     flightController.grantPocketPortalFlight(player, ownerId);
                 }
             }