Prevents damage to players with Essnetials God Mode on

https://github.com/BentoBoxWorld/AcidIsland/issues/93

src/main/java/world/bentobox/acidisland/listeners/AcidEffect.java

@@ -5,6 +5,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import org.bukkit.Bukkit;
 import org.bukkit.GameMode;
 import org.bukkit.Location;
 import org.bukkit.Material;
@@ -29,6 +30,8 @@ import org.bukkit.potion.PotionEffectType;
 import org.bukkit.scheduler.BukkitRunnable;
 import org.bukkit.util.Vector;
 
+import com.earth2me.essentials.Essentials;
+
 import world.bentobox.acidisland.AcidIsland;
 import world.bentobox.acidisland.events.AcidEvent;
 import world.bentobox.acidisland.events.AcidRainEvent;
@@ -45,6 +48,8 @@ public class AcidEffect implements Listener {
     private final AcidIsland addon;
     private final Map<Player, Long> burningPlayers = new HashMap<>();
     private final Map<Player, Long> wetPlayers = new HashMap<>();
+    private Essentials essentials;
+    private boolean essentialsCheck;
     private static final List<PotionEffectType> EFFECTS = Arrays.asList(
             PotionEffectType.BLINDNESS,
             PotionEffectType.CONFUSION,
@@ -176,7 +181,8 @@ public class AcidEffect implements Listener {
      * @return true if they are safe
      */
     private boolean isSafeFromRain(Player player) {
-        if (player.getWorld().getEnvironment().equals(Environment.NETHER)
+        if (isEssentialsGodMode(player)
+                || player.getWorld().getEnvironment().equals(Environment.NETHER)
                 || player.getWorld().getEnvironment().equals(Environment.THE_END)
                 || (addon.getSettings().isHelmetProtection() && (player.getInventory().getHelmet() != null && player.getInventory().getHelmet().getType().name().contains("HELMET")))
                 || (!addon.getSettings().isAcidDamageSnow() && player.getLocation().getBlock().getTemperature() < 0.1) // snow falls
@@ -200,6 +206,8 @@ public class AcidEffect implements Listener {
      * @return true if player is safe
      */
     private boolean isSafeFromAcid(Player player) {
+        // Check for GodMode
+        if (isEssentialsGodMode(player)) return true;
         // Not in liquid or on snow
         if (!player.getLocation().getBlock().getType().equals(Material.WATER)
                 && !player.getLocation().getBlock().getType().equals(Material.BUBBLE_COLUMN)
@@ -221,6 +229,19 @@ public class AcidEffect implements Listener {
         return player.getActivePotionEffects().stream().map(PotionEffect::getType).anyMatch(IMMUNE_EFFECTS::contains);
     }
 
+    /**
+     * Checks if player has Essentials God Mode enabled.
+     * @param player - player
+     * @return true if God Mode enabled, false if not or if Essentials plug does not exist
+     */
+    private boolean isEssentialsGodMode(Player player) {
+        if (!essentialsCheck && essentials == null) {
+            essentials = (Essentials)Bukkit.getPluginManager().getPlugin("Essentials");
+            essentialsCheck = true;
+        }
+        return essentials != null && essentials.getUser(player).isGodModeEnabled();
+    }
+
     /**
      * Checks what protection armor provides and slightly damages it as a result of the acid
      * @param le - player

src/test/java/world/bentobox/acidisland/listeners/AcidEffectTest.java

@@ -34,6 +34,7 @@ import org.bukkit.inventory.ItemFactory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.plugin.PluginManager;
 import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 import org.bukkit.scheduler.BukkitScheduler;
@@ -44,10 +45,14 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 import org.powermock.api.mockito.PowerMockito;
 import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.modules.junit4.PowerMockRunner;
 
+import com.earth2me.essentials.Essentials;
+import com.earth2me.essentials.User;
+
 import world.bentobox.acidisland.AISettings;
 import world.bentobox.acidisland.AcidIsland;
 import world.bentobox.bentobox.managers.PlayersManager;
@@ -91,6 +96,12 @@ public class AcidEffectTest {
     private PlayerInventory inv;
     @Mock
     private ItemMeta itemMeta;
+    @Mock
+    private PluginManager pim;
+    @Mock
+    private Essentials essentials;
+    @Mock
+    private User essentialsUser;
     
 
     /**
@@ -98,11 +109,16 @@ public class AcidEffectTest {
      */
     @Before
     public void setUp() throws Exception {
-        PowerMockito.mockStatic(Bukkit.class);
+        PowerMockito.mockStatic(Bukkit.class, Mockito.RETURNS_MOCKS);
         when(Bukkit.getScheduler()).thenReturn(scheduler);
         when(addon.getSettings()).thenReturn(settings);
         when(addon.getOverWorld()).thenReturn(world);
         
+        // Essentials
+        when(Bukkit.getPluginManager()).thenReturn(pim);
+        when(pim.getPlugin(eq("Essentials"))).thenReturn(essentials);
+        when(essentials.getUser(any(Player.class))).thenReturn(essentialsUser);
+        
         // Player
         when(player.getGameMode()).thenReturn(GameMode.SURVIVAL);
         when(player.getWorld()).thenReturn(world);
@@ -235,6 +251,17 @@ public class AcidEffectTest {
         verify(settings, times(2)).getAcidDamageDelay();
     }
     
+    /**
+     * Test method for {@link world.bentobox.acidisland.listeners.AcidEffect#onPlayerMove(org.bukkit.event.player.PlayerMoveEvent)}.
+     */
+    @Test
+    public void testOnPlayerMoveGodModeNoAcidAndRainDamage() {
+        when(essentialsUser.isGodModeEnabled()).thenReturn(true);
+        PlayerMoveEvent e = new PlayerMoveEvent(player, from, to);
+        ae.onPlayerMove(e);
+        verify(settings, never()).getAcidDamageDelay();
+    }
+    
     /**
      * Test method for {@link world.bentobox.acidisland.listeners.AcidEffect#onPlayerMove(org.bukkit.event.player.PlayerMoveEvent)}.
      */